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Sample records for bahia blanca estuary

  1. Morphology and dynamics of large subtidal dunes in Bahia Blanca estuary, Argentina

    Science.gov (United States)

    Minor Salvatierra, Marta; Aliotta, Salvador; Ginsberg, Silvia Susana

    2015-10-01

    The purpose of this paper is to carry out a detailed analysis of subtidal dune morphology and temporal variability and to estimate dune migration rate to improve knowledge of this topic, and so enhance the existing data on different marine environments in the world and especially in South America where this information is limited. Two swath bathymetry surveys were conducted across a dune field in the Bahia Blanca Estuary (Argentina). Morphometric parameters and migration rate according to the dune type, were analyzed. The field is composed of large dunes exhibiting two morphological configurations, which are differentiated into sinuous and barchan dunes. The dunes studied are the largest of the estuary, with heights and wavelengths greater than 5 m and 130 m, respectively. The crests of the large dunes are arranged with an orientation perpendicular to the axis of the channel. From geometrical analysis of the parameters, the dunes show a weakly positive correlation between dune height and wavelength as too between dune height and water depth. No clear relationship was observed between maximum height and wavelength parameters with water depth. Across the estuary, the bedforms migrate in the ebb direction, with mean rate of 43 m year- 1. Comparison of our results with previous data shows that during three decades the western boundary of dune field has been displaced 900 m towards the outer estuary, however the dune field configuration and distribution of diverse types of bedform appear to be relatively stable.

  2. The role of the smooth cordgrass Spartina alterniflora and associated sediments in the heavy metal biogeochemical cycle within Bahia Blanca estuary salt marshes

    Energy Technology Data Exchange (ETDEWEB)

    Hempel, M. [Dept. of Environmental Process Engineering, International Graduate School Zittau, Zittau (Germany); Botte, S.E. [Area de Oceanografia Quimica, Inst. Argentino de Oceanografia (IADO), CCT-CONICET, Bahia Blanca (Argentina); Dept. de Biologia, Bioquimica y Farmacia (DBBF), Univ. Nacional del Sur (UNS), Bahia Blanca (Argentina); Negrin, V.L.; Chiarello, M.N. [Area de Oceanografia Quimica, Inst. Argentino de Oceanografia (IADO), CCT-CONICET, Bahia Blanca (Argentina); Marcovecchio, J.E. [Area de Oceanografia Quimica, Inst. Argentino de Oceanografia (IADO), CCT-CONICET, Bahia Blanca (Argentina); Facultad Regional Bahia Blanca (UTN-FRBB), Univ. Tecnologica Nacional, Bahia Blanca (Argentina); Univ. FASTA, Mar del Plata (Argentina)

    2008-10-15

    Background, aim, and scope Bahia Blanca estuary is characterized by the occurrence of large intertidal areas, including both naked tidal flats and salt marshes densely vegetated with Spartina alterniflora. The estuary is strongly affected by human activities, including industrial and municipal discharges, harbor maintenance, cargo vessels and boat navigation, oil storage and processing, etc. Even numerous studies have reported the occurrence and distribution of heavy metals in sediments and biota from this estuary, although the function of the halophyte vegetation on metals distribution was at present not studied. The main objective of the present study was to understand the potential role of the salt marshes as a sink or source of metals to the estuary, considering both the obtained data on metal levels within sediments and plants from the studied areas at naked tidal as well as vegetated flats. Conclusions and recommendations Considering the comments on the previous paragraphs, salt marshes from Bahia Blanca estuary are sources or sinks for metals? It can be sustained that both are the case, even if it is often stated that wetlands serve as sinks for pollutants, reducing contamination of surrounding ecosystems (Weis and Weis, Environ Int 30:685-700, 2004). In the present study case, the sediments (which tend to be anoxic and reduced) act as sinks, while the salt marshes can become a source of metal contaminants. This is very important for this system because the macrophytes have been shown to retain the majority of metals in the underground tissues, and particularly in their associated sediments. This fact agreed well with previous reports, such as that from Leendertse et al., (Environ Pollut 94:19-29, 1996) who found that about 50% of the absorbed metals were retained in salt marshes and 50% was exported. Thus, keeping in mind the large spreading of S. alterniflora salt marshes within Bahia Blanca estuary, it must be carefully considered as a redistributor of

  3. Análisis de fuentes y toxicidad equivalente de sedimentos contaminados con PAHs en el estuario de Bahía Blanca, Argentina Sources analysis and equivalent toxicity assessment of PAHs impacted sediments in Bahia Blanca Estuary, Argentina

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    Andrés H. Arias

    2010-04-01

    Full Text Available Se presenta un estudio exhaustivo de sedimentos del estuario de Bahía Blanca (Argentina para determinar su impacto por Hidrocarburos Aromáticos Policíclicos (PAHs. Los sedimentos fueron procesados siguiendo protocolos de la Environmental Protection Agency (EPA, USA y analizados por Cromatografía Gaseosa-Espectrometría de Masas, hallándose un rango de concentraciones total, desde 103 a más de 2,000 ng.g-1 p.s. (p.s.= peso seco; Total PAHs = sumatoria de 17 PAHs, una concentración media de 527 ± 114 ng.g-1 y una mediana de 507 ng.g-1. Se demostró la existencia de un nivel dinámico de contaminación por PAHs, definido por valores bajos a moderados que incluyeron zonas puntuales con altos niveles. El análisis de origen mediante el uso de índices moleculares determinó un predominio de deposiciones pirolíticas sobre las de origen petrogénico, siendo dominantes las emisiones provenientes de la quema de biomasa durante los meses más cálidos. La calidad ecotoxicológica de los sedimentos se abordó utilizando el enfoque de niveles guía, hallándose para la mayoría de los sitios muestreados una predicción de efectos adversos infrecuentes sobre la biota adyacente, con sitios puntuales para los cuales se predijo la aparición frecuente de efectos. Utilizando el concepto de equivalentes de Benzo-a-pireno se calculó su carga total, la cual se halló en ocasiones por sobre los valores indicados en diversas regulaciones internacionales. Finalmente se evaluó la dosis carcinogénica aportada por los 7 PAHs carcinogénicos y su perfil de concentraciones se contrastó estadísticamente con otros sitios costeros del mundo utilizando análisis de grupos jerarquizados.This paper presents a comprehensive survey of PAHs in coastal sediments of Bahia Blanca, Argentina and provides useful information of their levels of concentration, sources, ecotoxicological assessment and carcinogenic PAHs profile of local emissions. Sediments were analyzed

  4. Dinámica sedimentaria y evolución morfológica de un profundo canal del estuario de Bahía Blanca Sedimentary dynamics and morphological evolution of a deep channel in the Bahia Blanca estuary

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    Salvador Aliotta

    2004-03-01

    Full Text Available Al sur de la provincia de Buenos Aires se ubica la región costera de Bahía Blanca. La misma es un extenso sistema mesomareal, con canales de diversas dimensiones y características. El objetivo de esta investigación es analizar los rasgos morfológicos del canal Tres Brazas y su entorno, definiendo dinámica sedimentaria y tendencias evolutivas asociadas. Ondas de arena de hasta 1,5 m de altura y megaóndulas evidencian la migración de los sedimentos. La arena transportada desde el interior del Tres Brazas resulta la fuente de aporte de una barra tipo espiga, que se desarrolla desde la margen derecha de su desembocadura. En tanto, en el interior de los canales Tres Brazas y Tierra Firme son intensos los procesos erosivos sobre sus veriles. Estos, constituidos por material limo arcillo arenoso, según dataciones 14C corresponden a la regresión marina holocena. Las formas acrecionales más significativas son point bars, genéticamente relacionadas a la sedimentación producida por la corriente de reflujo. En la confluencia del Tres Brazas y Tierra Firme se desarrolla una gran depresión de 26 m de profundidad. Sismoestratigráficamente, se define que ésta se originó durante el último período regresivo marino, cuando condiciones turbulentas producidas en el encuentro de los canales de marea habrían iniciado el socavamiento del fondo, generándose una geoforma enteramente erosiva. En una fase posterior, por una mayor disponibilidad de sedimento arenoso, se produce la acreción del flanco sur y sureste, mientras que la erosión del veril norte y noroeste resulta indicativa de la tendencia evolutiva actual.The Bahía Blanca coastal region is located to the south of Buenos Aires Province. It is an extended mesotidal system, with channels of diverse dimensions and characteristics. The objective of this work is to analyse the morphological features of the Tres Brazas channel and its environment, defining sedimentary dynamics and associated

  5. Sistema interconectado de canales de marea del estuario de Bahía Blanca, Argentina: evaluación de la circulación de sedimento como carga de fondo por métodos acústicos An interconnected system of tidal channels in Bahia Blanca estuary, Argentina: an evaluation of bedload sediment transport through acoustic methods

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    Silvia S Ginsberg

    2009-01-01

    Full Text Available El estuario de Bahía Blanca, ubicado al sur de la provincia de Buenos Aires (Argentina, constituye una costa baja con extensas llanuras de marea, islas y una compleja red de canales de diferentes magnitudes. Estos últimos integran un sistema de canales interconectados. El objetivo de este trabajo es establecer la circulación sedimentaria como carga de fondo en un sistema de canales interconectados (Cabeza de Buey, El Alambre, La Lista y Principal mediante el análisis de los rasgos morfológicos de fondo, utilizando métodos acústicos (ecosonda y sonar lateral. El canal Cabeza de Buey se comunica con el canal La Lista a través del canal El Alambre. Los dos primeros vierten sus aguas en el canal Principal. El canal Cabeza de Buey posee un lecho plano constituido por material pelítico con arena muy fina. En su tramo más interno se presentan dunas medianas compuestas por arena fina, con un perfil asimétrico según el reflujo. Estas formas, continúan su desarrollo ininterrumpidamente hacia el canal El Alambre, donde se originan dunas grandes (altura 1,5 m formadas por arena muy fina. Sus crestas son sinuosas o barjanoides y poseen su talud hacia la corriente de bajante. En el canal La Lista se determinan dunas asimétricas medianas orientadas según el reflujo y grandes linea-ciones sedimentarias (sand ribbons sobre un fondo consolidado. El sedimento movilizado por la corriente corresponde a la fracción limo-arena fina. La distribución y configuración de las geoformas evidencian que el transporte sedimentario como carga de fondo se concentra principalmente en el canal La Lista. Es así como en el sistema de canales estudiado, sólo un canal de marea regula la dispersión de arena, transportando un importante volumen hacia el canal de navegación.Bahia Blanca estuary located in the south of Buenos Aires province, Argentina, is characterized by a low coastal area with large tidal plains, islands, and a complex network of tidal channels of

  6. Relationship of physical factors and salinity with indicator bacteria in Bahía Blanca estuary waters, Argentina.

    Science.gov (United States)

    Cabezali, C B; Baldini, M D; Burgos, M A; Arango, J M

    1994-01-01

    The relationship between the number of Escherichia coli, terrestrial and marine heterotrophic bacteria, with certain physical and chemical parameters in Bahia Blanca estuary waters, were investigated by means of a statistical analysis of multiple linear regression. The samples were taken during a period of 16 months. Although distance from the sewage outlet seems to be the factor having the greatest effect on the number of alien bacteria, the models obtained for E. coli are inappropriate to predict bacterial behaviour in this particular natural habitat, while for heterotrophic bacteria descriptive models were selected. The results of this study suggest that many factors affect bacterial population densities in this estuarine ecosystem. This should be taken into account trying to solve the problem in order to avoid progressive degradation. PMID:7938503

  7. Isotopic and chemical variations of groundwater in the deep aquifer of the Ombucta Formation, Bahia Blanca, Argentina

    International Nuclear Information System (INIS)

    Stable isotopes and 14C data on Bahia Blanca basin, Ombucta Formation are presented. Previous hydrochemical and geological studies led to the conclusion that Ombucta aquifer is recharged by water rising through fractures and diaclases from underlying paleozoic rocks. This up movement occurs along a section coincident with the regional tectonic alignment that crosses Bahia Blanca city in W-E direction. Water penetrating this formation moves northward and southward with different velocities, as inferred from thermal and hydraulic gradients. 14C isochrones agree with isochloride curves and the correlation between water ages and stable isotopes values suggest colder climatic conditions prevailing when water infiltrated. Meteoric origin of groundwater and catchment area location at Sierras Australes are confirmed by these results. (author). 20 refs, 9 figs, 2 tabs

  8. Characterisation of the Bahía Blanca estuary by data analysis and numerical modelling

    Science.gov (United States)

    Campuzano, Francisco Javier; Pierini, Jorge O.; Leitão, Paulo C.; Gómez, Eduardo A.; Neves, Ramiro J.

    2014-01-01

    The Bahía Blanca estuary is a complex system of channels and tidal flats where the most important deep water harbour system of Argentina is located. The main goal of the present work was to obtain a hydrodynamic conceptual model for the Bahía Blanca coastal area. For this reason, a combined analysis of observed data and numerical modelling has been performed for the whole area. The gained knowledge on the system hydrodynamics could aid in the decision support for navigation security, waste water discharges management, sediment dredging and rejection operations among other applications. Due to the Bahía Blanca coastal vast area, hydrodynamic observations are scarce and located near the populated areas. In order to describe the hydrodynamics of such a complex and large system, the analysed tidal and current data from different periods have been completed through numerical modelling. Data analysis served to determine the main processes governing the Bahía Blanca hydrodynamics, to characterise the area using general descriptors, to provide inputs for the numerical model and to aid in evaluating its performance. In addition, a 2-dimensional application was set up using the MOHID water modelling system for the Bahía Blanca estuary. This application aimed to gain a better understanding of the system dynamics, to explain and test the consistency of the observed data and to reproduce the processes taking place. Model results were in good agreement with the analysed data and served to confirm an inconsistency found on the sea level observations. The combination of both methodologies served to further describe the hydrodynamic processes governing this coastal area and also to obtain a conceptual model for the water and property circulation in the Bahía Blanca estuary.

  9. Energy cogeneration for the industrial sector. Exploration of possibilities for Bahia Blanca petrochemical complex; Cogeneracion de energia para el sector industrial. Exploracion de posibilidades para el polo petroquimico de Bahia Blanca

    Energy Technology Data Exchange (ETDEWEB)

    Salzman, Carlos H. [Buenos Aires Univ. (Argentina). Facultad de Ingenieria. Dept. de Electrotecnia; Baraychart, Rogelio [Tecnolatina S.A., Buenos Aires (Argentina)

    1997-12-31

    Many industrial plants have installed gas turbines in connection with total energy schemes. By combining a gas turbine with a steam plant, through an Independent Power Producer (IPP), increasing in overall efficiency can be archived compared to a steam plant alone. The general applications and economic considerations after privatization of Argentine Network, indicates that for power supply, combined cycle with cogeneration, is appropriate for generation, because of improving quality service, lowering capital cost improving and high efficiency. Figures are shown in this paper, for a project at the petrochemical development pole in Bahia Blanca city, located in the south of Buenos Aires Province. (author) 4 refs., 3 figs.; e-mail: gea at delec.fi.uba.ar; tecnolat at ssdnet.com.ar

  10. Seismic Stratigraphy of Pleistocene Deltaic Deposits in Bahía Blanca Estuary, Argentina

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    SALVADOR ALIOTTA

    2014-06-01

    Full Text Available The Bahía Blanca estuary (Argentina has a morphological configuration resulting from hydrological and sedimentary processes related to Late Quaternary sea level changes. This estuarine system occupies a large coastal plain with a dense net of tidal channels, low-altitude islands and large intertidal flats. Little is known about the sedimentary units of the marine subbottom. Therefore, a stratigraphical analysis of the northern coast of Bahía Blanca estuary was carried out using high resolution seismic (3.5 kHz in order to: i define Quaternary sequences, ii describe sedimentary structures, and iii determine the paleoenvironmental conditions of sedimentation. The seismic stratigraphic data collected and their correlation with drilling lithological data show five seismic sequences (S1, S2, S3, S4 and S5, of which S1-S2 were found to be associated with a continental paleoenvironment of Miocene-Pleistocene age. Sequences S3 and S4, whose lithology and seismic facies (paleochannel structures and prograding reflection configurations, were defined on these materials, to evidence the development of an ancient deltaic environment which was part of a large Pleistocene drainage system. The S5 sequence was formed during the Holocene transgressive-regressive process and complete the seismostratigraphic column defined in the present study.

  11. Environmental cadmium and lead concentrations in the Bahía Blanca Estuary (Argentina). Potential toxic effects of Cd and Pb on crab larvae

    OpenAIRE

    Laura Ferrer; Elena Contardi; Santiago J. Andrade; Raúl Asteasuain; Adán E. Pucci; Jorge E Marcovecchio

    2000-01-01

    The Bahía Blanca Estuary includes a large tidal plain with an area close to 1150 km2. Mud is predominant in its sediments, where a significant population of the crab Chasmagnathus granulata lives during the whole year. Moreover, there are important urban and industrial discharges into this environment. Cd and Pb concentrations were determined in samples of water (for both dissolved and suspended particulate matter) and surface sediments (total and 63 µm fractions). Organic matter ...

  12. Circulation and suspended particulate matter transport in a tidally dominated estuary: caravelas estuary, Bahia, Brazil

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    Carlos Augusto França Schettini

    2010-03-01

    Full Text Available The circulation and transport of suspended particulate matter in the Caravelas Estuary are assessed. Nearly-synoptic hourly hydrographic, current (ADCP velocity and volume transport and suspended particulate matter data were collected during a full semidiurnal spring tide, on the two transects Boca do Tomba and Barra Velha and on longitudinal sections at low and high tide. On the first transect the peak ebb currents (-1.5 ms-1 were almost twice as strong as those of the wider and shallow Barra Velha inlet (-0.80 ms-1 and the peak flood currents were 0.75 and 0.60 ms-1, respectively. Due to the strong tidal currents both inlets had weak vertical salinity stratification and were classified with the Stratification-circulation Diagram as Type 2a (partially mixed-weakly stratified and Type 1a (well mixed. Volume transports were very close, ranging from -3,500 to 3,100 m³s-1 at the ebb and flood, respectively, with a residual -630 m³s-1. The concentration of the suspended particulate matter was closely related to the tidal variation and decreased landwards from 50 mg.L-1 at the estuary mouth, to 10 mg.L-1 at distances of 9 and 16 km for the low and high tide experiments, respectively. The total residual SPM transport was out of the estuary at rates of -18 tons per tidal cycle.A circulação e o transporte de material particulado em suspensão no Estuário de Caravelas são pesquisados. Dados quase-sinóticos hidrográficos, de correntes (velocidade e transporte de volume com ADCP e de material particulado em suspensão, foram medidos em intervalos horários durante um ciclo semidiurno de maré de sizígia, em duas seções transversais na Boca do Tomba e na Barra Velha e também em seções longitudinais na baixa-mar e na preamar. Na primeira transversal as correntes máximas de vazante (-1,50 m s-1 foram quase duas vezes mais intensas do que na seção transversal mais larga e rasa Barra Velha, (-0,80 m s-1 e as maiores velocidades das correntes de

  13. Temporal variation in abundance and fecundity of the invading copepod Eurytemora americana in Bahía Blanca Estuary during an unusual year

    Science.gov (United States)

    Berasategui, Anabela A.; Hoffmeyer, Mónica S.; Biancalana, Florencia; Fernandez Severini, Melisa; Menendez, María C.

    2009-10-01

    Eurytemora americana has been only reported as invader in Bahía Blanca Estuary, Argentina within the South Hemisphere. There are a few experimental researches under laboratory conditions done with this species and its reproductive behaviour around the world is very scarce. Consequently, it is still not possible to completely understand its population dynamics. In the present study, E. americana reproductive temporal behaviour and relationships among abundance, female size, egg production and hatching success were examined in the Bahía Blanca Estuary, during 2007 pulse. In order to determine the potential relationships between these variables and the environmental variables, experimental incubations were conducted in the laboratory simulating natural conditions. Spearman's rank correlation was used to analyze the relationships among all variables. Temporal change of biotic and environmental variables was corroborated by a Mann-Whitney/Kruskal-Wallis non-parametric tests, with significant differences ( p ≪ 0.01) in all variables throughout the study. Abundance population results showed very high values in relation to those recorded in recent years in Bahía Blanca Estuary. This response could be due to the unusual combination of environmental factors (polar wave with temperatures ≤6 °C and a drought period with high salinities, 32.7-36.6) recorded during the studied winter period. Significant positive correlations between abundance and salinity ( p success ( p strategy within its annual pulse, it presented two markedly distinct behaviours depending on temporal environmental variability. From July to early september, when the estuary evidenced high salinity, low temperature and high food availability, E. Americana showed large females, large clutch size and high hatching success. When environmental conditions became unfavorable from September to October, small females, small clutch size and very low hatching success were observed. The latter is associated with

  14. Environmental cadmium and lead concentrations in the Bahía Blanca Estuary (Argentina. Potential toxic effects of Cd and Pb on crab larvae

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    Laura Ferrer

    2000-12-01

    Full Text Available The Bahía Blanca Estuary includes a large tidal plain with an area close to 1150 km2. Mud is predominant in its sediments, where a significant population of the crab Chasmagnathus granulata lives during the whole year. Moreover, there are important urban and industrial discharges into this environment. Cd and Pb concentrations were determined in samples of water (for both dissolved and suspended particulate matter and surface sediments (total and 63 µm fractions. Organic matter was analysed in the sediments, while temperature, salinity, pH and dissolved oxygen were measured in the estuarine water. The metal concentrations determined in this study were: 1.47 ± 1.08 µg Cd g–1 and 14.68 ± 4.31 µg Pb g–1 in surface sediments; 2.21 ± 1.33 µg Cd g–1 and 25.70 ± 7.09 µg Pb g–1 in the –1 and below the analytical detection limit of Pb in suspended particulate matter. Furthermore, dissolved Cd and Pb were lower than the norms for marine and estuarine waters (2 µg dm–3 for Cd and 5 µg dm–3 for Pb, E.P.A.. Simultaneously, the effects of Cd and Pb were studied on recently hatched larvae of Ch. granulata, through 96-hour semi-static acute assays. Viability was the criterion assessed in the assays. LC50 (96 h for Cd was 46.43 µg dm–3 (36.92 - 56.34 µg dm–3, whilst that for Pb was 1.00 mg m–3 (0.79 - 1.23 mg dm–3, which demonstrates that Cd is more toxic towards larvae. Finally, both LC50 values determined for Cd and Pb were higher than the corresponding metal concentrations measured in the Bahía Blanca environment.

  15. Feminismo y derechos de las mujeres: representaciones de género en la prensa católica de Bahía Blanca a principios del siglo XX Feminism and women rights: gender representations in the Bahia Blanca's catholic press at the beginning of the XX Century

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    Lucía Bracamonte

    2011-12-01

    Full Text Available A principios del siglo XX, los cuadros católicos de Bahía Bahía se acercan a los fieles de la ciudad y del entorno regional a través de varias publicaciones, mostrando su preocupación por la "cuestión social" y emprendiendo la difusión de los postulados del catolicismo social como paliativo y como barrera ante el avance de fuerzas como el liberalismo, el socialismo, el anarquismo y el feminismo. Precisamente, la propuesta del presente artículo es identificar los contenidos atribuidos a este último, puesto que quienes escriben en los órganos de sensibilidad católica emplean el término al inmiscuirse en los debates sobre la denominada, de acuerdo con los cánones de la época, "cuestión de la mujer". Considerando que el periodismo, en su carácter de medio de comunicación masiva, asume, entre otras, la función de configuración y difusión de representaciones de género, se postula que en los impresos mencionados el empleo del término "feminismo" es polisémico, pudiéndose distinguir distintos significados según se intente definir en sentido católico o se asocie a los movimientos que cuestionan la subalternidad femenina y bregan por el reconocimiento de los derechos de las mujeres.At the beginning of the 20th Century, the catholic groups in Bahia Blanca get closer to the faithful of the city and the general regional area through many publications, showing their preoccupation for the "social question" and starting the dissemination of the social catholic principles like a palliative and to stop the advance of forces like liberalism socialism, anarchism and feminism. The proposal of this article actually consists in identifying the contents of this last one, since those that write in the catholic media use this word when they get into the debate, according to the standards of that time, about the "woman question". Considering that journalism, in its character of a mass communication media, assumes, among others, the configuration

  16. Abundance and species composition of planktonic Ciliophora from the wastewater discharge zone in the Bahía Blanca Estuary, Argentina

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    María Sonia Barría de Cao

    2003-09-01

    Full Text Available The specific composition and abundance variation of the ciliate community from a wastewater discharge zone in the Bahía Blanca estuary, Argentina, were studied all throughout a year, from June 1995 to May 1996. The polluted area exhibited high values of particulate organic matter and nutrients, particularly phosphates. Aloricate ciliates were represented by 15 species belonging to the genera Strombidium Claparède & Lachmann, 1859; Strombidinopsis Kent, 1881; Cyrtostrombidium Lynn & Gilron, 1993; Strobilidium Schewiakoff, 1983; Lohmmanniella Leegaard, 1915 and Tontonia Fauré-Fremiet, 1914. Tintinnids were represented by nine species belonging to the genera Tintinnidium Kent, 1881, Tintinnopsis Stein, 1867 and Codonellopsis Jörgensen, 1924. The total abundance of aloricate ciliates reached a peak of 1,800 ind. 1-1 and the total abundance of tintinnids reached a peak of 9,400 ind. 1-1. Tintinnidium balechi Barría de Cao, 1981 was the most abundant ciliate in the community. Considerations on the presence and abundance of ciliates are made in relation to physicochemical and biochemical parameters.

  17. Cyanophyceae Epipélicas de la Marisma "El Cangrejal" en el estuario de Bahía Blanca (Buenos Aires, Argentina Epipelic Cyanophyceae of the salt marsh «El Cangrejal» in the estuary of Bahía Blanca (Buenos Aires, Argentina

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    Constanza Da Rodda

    2005-12-01

    Full Text Available En la marisma de las planicies de marea limo-arcillosas del estuario de Bahía Blanca (Buenos Aires se ubica "El cangrejal", una asociación de Sarcocornia perennis y Chasmagnathus granulata. En la interfase sedimento-agua se forman matas microbianas constituidas principalmente por cianofíceas y diatomeas. Se estudiaron las Cyanophyceae epipélicas presentes en dichas matas, identificándose veintitres taxa correspondientes a los Órdenes Chroococcales (1 y Hormogonales (22. Las especies halladas son nuevas citas para el área en estudio, a excepción de Microcoleus chthonoplastes y Oscillatoria limosa. Symploca hydnoides f. minor se cita por primera vez para Argentina.«El Cangrejal», an association of Sarcocornia perennis and Chasmagnathus granulata is situated in the salt marsh of slime-clay tide plains of the estuary of Bahía Blanca (Buenos Aires. In the sediment-water interface microbial mats are mainly constituted by cyanophytes and diatoms. This is a study of the epipelics Cyanophyceae presents in these mats, identifying twenty three taxa corresponding to the Orders Chroococcales (1 and Hormogonales (22. The species are new mention for the study area, an exception are Microcoleus chthonoplastes and Oscillatoria limosa. Symploca hydnoides f. minor is a new record for Argentina.

  18. AN INFORMATION SYSTEM TO ANALYZE AND MONITORING COASTAL AREAS FOR PLANNING SUSTAINABLE DEVELOPMENT. APPLICATIONS FOR SANTOS ESTUARY (BRAZIL) AND BAHIA BLANCA (ARGENTINA)

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    ALMEIDA GUERRA, PAOLA BRUNELA

    2007-01-01

    Questa tesi di dottorato è stata realizzata nell'ambito del progetto ECOManage (Jntegrated Ecological Coastal Zone Management System ), un progetto internazionale che ha come obiettivi comprendere e descrivere come gli ecosistemi estuarini rispondano agli impatti antropici, allo scopo di promuovere l'uso sostenibile, la protezione e la gestione della risorsa idrica; e fornire un supporto scientifico agli enti ambientali locali riguardo alle migliori pratiche politiche da attuare. I siti di in...

  19. Impact of a power plant cooling system on copepod and meroplankton survival (Bahía Blanca estuary, Argentina Impacto del sistema de enfriamiento de una central termoeléctrica sobre la supervivencia de copépodos y meroplancton (estuario de Bahía Blanca, Argentina

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    Mónica Susana Hoffmeyer

    2005-09-01

    Full Text Available The impact of a power plant cooling system in the Bahía Blanca estuary (Argentina on the survival of target zooplanktonic organisms (copepods and crustacean larvae and on overall mesozooplankton abundance was evaluated over time. Mortality rates were calculated for juveniles and adults of four key species in the estuary: Acartia tonsa Dana, 1849 and Eurytemora americana Williams, 1906 (native and invading copepods, and larvae of the crab Chasmagnathus granulata Dana, 1851 and the invading cirriped Balanus glandula Darwin, 1854. Mean total mortality values were up to four times higher at the water discharge site than at intake, though for all four species, significant differences were only registered in post-capture mortality. The findings show no evidence of greater larval sensitivity. As expected, the sharpest decrease in overall mesozooplankton abundance was found in areas close to heated water discharge.El impacto del sistema de enfriamiento de una planta termoeléctrica ubicada en el estuario de Bahía Blanca, Argentina, fue evaluado en el tiempo, sobre la supervivencia de especies zooplanctónicas seleccionadas (copépodos y larvas de crustáceos y la abundancia general del meso-zooplancton. Se calcularon tasas de mortalidad de juveniles y adultos de cuatro especies clave en el estuario: Acartia tonsa Dana,1849 y Eurytemora americana Williams,1906 (copépodos nativo e invasor, y larvas del cangrejo Chasmagnathus granulata Dana, 1851 y del cirripedio invasor Balanus glandula Darwin, 1854. Los valores medios hallados de la tasa de mortalidad total, fueron hasta cuatro veces más altos en la descarga que en el agua de entrada al sistema. Sin embargo sólo se registraron diferencias significativas entre estos dos sitios, en los valores de mortalidad post-captura obtenidos para las cuatro especies. Los resultados del estudio no demostraron una mayor sensibilidad larval. Como se esperaba, la disminución más pronunciada en la abundancia general

  20. Hermaphroditism among dioecious Tagelus plebeius (Lightfoot, 1786 (Mollusca, Psammobiidae and Iphigenia brasiliana (Lamarck, 1818 (Mollusca, Donacidae on the Cachoeira River Estuary, Ilhéus, Bahia, Brazil Hermafroditismo nos moluscos dióicos Tagelus plebeius (Lightfoot, 1786 (Mollusca, Psammobiidae e Iphigenia brasiliana (Lamarck, 1818 (Mollusca, Donacidae na região estuarina do Rio Cachoeira, Ilhéus, Bahia, Brasil

    Directory of Open Access Journals (Sweden)

    LO. Ceuta

    2010-02-01

    Full Text Available The samples of Tagelus plebeius and Iphigenia brasiliana were manually collected on the Cachoeira River estuary region (Ilhéus, BA, Brazil between August 2005 and August 2006, with a periodicity of 15 days, with 20 animals collected/sampled, performing 500 samples from each species. The animals were measured, eviscerated and kept in solution of Davidson and after 24-30 hours, they were transferred to ethanol 70%. The material was processed for routine histology, with paraffin embedding, obtaining 7 μm thick slices, stained with Harris hematoxilin and Eosin (HE. By light microscopy analysis, 2 cases of hermaphroditism (0.4% in T. plebeius samples and one case (0.2% in I. brasiliana were registered with predominance of female over male follicles.Os exemplares de Tagelus plebeius e Iphigenia brasiliana foram manualmente coletados na região estuarina do Rio Cachoeira (Ilhéus, Bahia, entre agosto de 2005 e agosto de 2006, com coleta quinzenal de 20 animais, totalizando 500 exemplares/espécie. Os animais foram mensurados, eviscerados e fixados em solução de Davidson por 24-30 horas e depois transferidos para etanol a 70%. O material foi processado por técnica rotineira de histologia, com inclusão em parafina, obtenção de cortes com 7 μm de espessura e coloração por hematoxilina de Harris e Eosina (HE. A análise em microscopia de luz evidenciou 2 casos de hermafroditismo (0,4% em T. plebeius e um caso (0,2% em I. brasiliana (0,2%, com predominância de folículos femininos sobre os masculinos.

  1. Formas de financiamiento municipal : El caso de Bahia Blanca

    OpenAIRE

    Martínez, Cintia Karina

    1999-01-01

    El objetivo del presente trabajo es explorar las diferentes posibilidades de financiación con que cuentan los gobiernos locales en la actualidad, concretamente los ubicados en el territorio de la provincia de Buenos Aires, a la luz de la discusión actual sobre las relaciones fiscales entre los distintos niveles de un estado federal y basándose en el marco institucional existente del que necesariamente se debe partir. Asimismo, se analizan las restricciones de los municipios para la generación...

  2. Ciclo gametogênico e comportamento reprodutivo de Iphigenia brasiliana (Mollusca, Bivalvia, Donacidae no estuário do rio Subaé, Baía de Todos os Santos, Bahia, Brasil Gametogenic cycle and reproductive behavior of Iphigenia brasiliana (Mollusca, Bivalvia, Donacidae in the Subaé river estuary, Todos os Santos Bay, Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Patrícia P. Silva

    2012-12-01

    ém, no mês de outubro de 2002.This study aimed to describe the gametogenic cycle and reproductive behavior of the population of Iphigenia brasiliana (Lamarck, 1818 in the estuary of the Subaé river, Todos os Santos Bay, Bahia. The bivalves were collected from November 2001 to November 2002. A total of 244 specimens was measured (anteroposterior axis, gutted, fixed, dehydrated and embedded in paraffin. The histology of the gonads was performed by 5 mm thick serial sections of gonadal tissue, and stained with HE. The length at the beginning of gonadal maturation (Lpm was estimated from the distribution of the relative frequencies of youth and adults, by length class of individuals. The relative frequencies of the sexes at each stage of development were considered together for the analysis of the reproductive behavior of the population, and, separately, to assess the sexual cycle synchrony between males and females. We observed a variation of sizes between 9.1 and 66.6 mm, with a mean length of 50.2 mm. The study showed no significant difference between the sizes of males and females. There was no evidence of gender differentiation in 2.1% of subjects analyzed. 51.6% of subjects were identified as males (M and 46.3% as females (F, without significant differences among average number of male and female, resulting in the proportion of M:F ratio of 1,1:1. Lpm was estimated at 11.4 mm, but only to achieve average length of 34.4 mm, all subjects were considered adults. We characterized four stages of evolution of gonadal development in females and males. Analysis of different stages allowed the observation of the atresia phenomena and sex reversal in females. The reproductive cycle presents continuous elimination of gametes, with higher reproductive intensities in the months of November 2001 to April 2002 and also in October 2002.

  3. Ciclo gametogênico e comportamento reprodutivo de Iphigenia brasiliana (Mollusca, Bivalvia, Donacidae no estuário do rio Subaé, Baía de Todos os Santos, Bahia, Brasil Gametogenic cycle and reproductive behavior of Iphigenia brasiliana (Mollusca, Bivalvia, Donacidae in the Subaé river estuary, Todos os Santos Bay, Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Patrícia P. Silva

    2012-01-01

    ém, no mês de outubro de 2002.This study aimed to describe the gametogenic cycle and reproductive behavior of the population of Iphigenia brasiliana (Lamarck, 1818 in the estuary of the Subaé river, Todos os Santos Bay, Bahia. The bivalves were collected from November 2001 to November 2002. A total of 244 specimens was measured (anteroposterior axis, gutted, fixed, dehydrated and embedded in paraffin. The histology of the gonads was performed by 5 mm thick serial sections of gonadal tissue, and stained with HE. The length at the beginning of gonadal maturation (Lpm was estimated from the distribution of the relative frequencies of youth and adults, by length class of individuals. The relative frequencies of the sexes at each stage of development were considered together for the analysis of the reproductive behavior of the population, and, separately, to assess the sexual cycle synchrony between males and females. We observed a variation of sizes between 9.1 and 66.6 mm, with a mean length of 50.2 mm. The study showed no significant difference between the sizes of males and females. There was no evidence of gender differentiation in 2.1% of subjects analyzed. 51.6% of subjects were identified as males (M and 46.3% as females (F, without significant differences among average number of male and female, resulting in the proportion of M:F ratio of 1,1:1. Lpm was estimated at 11.4 mm, but only to achieve average length of 34.4 mm, all subjects were considered adults. We characterized four stages of evolution of gonadal development in females and males. Analysis of different stages allowed the observation of the atresia phenomena and sex reversal in females. The reproductive cycle presents continuous elimination of gametes, with higher reproductive intensities in the months of November 2001 to April 2002 and also in October 2002.

  4. Effect of dominant Spartina species on salt marsh detritus production in SW Atlantic estuaries

    Science.gov (United States)

    Montemayor, Diana I.; Addino, Mariana; Fanjul, Eugenia; Escapa, Mauricio; Alvarez, M. Fernanda; Botto, Florencia; Iribarne, Oscar O.

    2011-08-01

    Two cordgrass species of the genus Spartina cohabit in SW Atlantic (southern Brazil 31º48' S to Argentinean Patagonia, 43º20' S) salt marshes. Some salt marshes are dominated by the dense-flowered cordgrass Spartina densiflora (which inhabits the upper intertidal level) and others by the smooth cordgrass Spartina alterniflora (which inhabits the lower intertidal level). We investigated how the different species dominance affects the detritus dynamics in the Bahia Blanca estuary (38º47' S, 62º20' W Argentina). Field measurements of annual detritus production using destructive methods show that both plants are similar. However, detritus of S. alterniflora shows higher decomposition rates than that of S. densiflora. This difference may be due to a larger N content, lower lignocellulose content and lower C/N ratio of S. alternifora when compared with S. densiflora. Moreover, field sampling shows that S. alterniflora has a larger amount of trapped litter that, according to the litterbag method, has higher decomposition rates. Therefore it is highly likely that S. alterniflora salt marshes contribute towards more profitable detritus for estuarine food webs than marshes dominated by S. densiflora. These results illustrate that the composition of the coastal plant community can determine the quality and profitability of the detritus that support estuarine food webs. They also illustrate that salt marshes belonging to a same biogeographic group and even coexisting in great proximity can have very different ecosystemic roles.

  5. Natural Analog Studies at Pena Blanca, Mexico

    International Nuclear Information System (INIS)

    The significance of the Pena Blanca uranium deposits in the State of Chihuahua, Mexico as potential natural analogs for a nuclear waste repository in unsaturated welded tuff was first recognized in the 1980s. In the 1970s, the Pena Blanca region was a major target of uranium exploration and exploitation by the Mexican government. Since then the Nopal I uranium deposit has been studied extensively by researchers in the U.S., Mexico, and Europe. The Nopal I deposit represents an environment similar to that of the proposed high-level radioactive waste repository at Yucca Mountain in many ways. Both are located in semi-arid regions. Both are located in Tertiary rhyolitic tuffs overlying carbonate rocks that have been subjected to basin and range-style tectonic deformation. Both are located in a chemically oxidizing, unsaturated zone 200 m or more above the water table. The alteration of uraninite to secondary minerals at Nopal I may be similar to the alteration of uranium fuel rods in this type of setting. Investigations at Nopal I and in the surrounding Sierra Pena Blanca have included detailed outcrop mapping, hydrologic and isotopic studies of flow and transport, studies of mineral alteration, modeling, and performance assessment

  6. Natural Analog Studies at Pena Blanca, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    A.M. Simmons

    2005-07-11

    The significance of the Pena Blanca uranium deposits in the State of Chihuahua, Mexico as potential natural analogs for a nuclear waste repository in unsaturated welded tuff was first recognized in the 1980s. In the 1970s, the Pena Blanca region was a major target of uranium exploration and exploitation by the Mexican government. Since then the Nopal I uranium deposit has been studied extensively by researchers in the U.S., Mexico, and Europe. The Nopal I deposit represents an environment similar to that of the proposed high-level radioactive waste repository at Yucca Mountain in many ways. Both are located in semi-arid regions. Both are located in Tertiary rhyolitic tuffs overlying carbonate rocks that have been subjected to basin and range-style tectonic deformation. Both are located in a chemically oxidizing, unsaturated zone 200 m or more above the water table. The alteration of uraninite to secondary minerals at Nopal I may be similar to the alteration of uranium fuel rods in this type of setting. Investigations at Nopal I and in the surrounding Sierra Pena Blanca have included detailed outcrop mapping, hydrologic and isotopic studies of flow and transport, studies of mineral alteration, modeling, and performance assessment.

  7. Proceedings of the tenth scientific meeting at Bahia Blanca, 2-6 november 1981

    International Nuclear Information System (INIS)

    Compilation of 64 short papers by different authors, arranged in 5 sections, including the following groups of subjects: experimental reactors; instrumentation and control; nuclear and radiological safety; radioisotopes and radiations; nuclear power plants, and quality assurance. These papers deal with developments carried out at the National Atomic Energy Commission (CNEA) and firms related to Nuclear Programme. (R.J.S.)

  8. Serological relationships between rice Hoja Blanca Virus AND Echinochloa Hoja Blanca Virus

    OpenAIRE

    Jorge Madriz; José Bonilla; de Miranda, Joachim R.; Ana Espinoza

    2016-01-01

    Con el objetivo de determinar si el RHBV (Rice Hoja Blanca Virus) y el EHBV (Echinochloa Hoja Blanca Virus) se hallan relacionados serológicamente, se produjo un antisuero contra la proteína de nucleocápside del EHBV. Se demostró que ambos virus presentan características que los diferencian a este nivel. Al comparar la proteína de nucleocápside en geles SDS-PAGE de alta resolución, se observó que dicha proteína en el EHBV presenta una masa molecular menor que la del RHBV. El antisuero contra ...

  9. Neumopericardio debido a herida por arma blanca

    OpenAIRE

    Samuel I. Merino Barrera; Francisco L. Moreno-Martínez

    2015-01-01

    Hombre de 24 años de edad que ingresó en el hospital debido a una herida por arma blanca penetrante en el hemitórax derecho. La herida, de 3 cm a nivel de la piel, se localizaba a nivel del segundo espacio intercostal derecho y la radiografía de tórax demostró un neumotórax del mismo lado y una colección radiotransparente, por debajo del pericardio parietal, desde el origen de los grandes vasos hasta la porción apical del ventrículo izquierdo.

  10. Neumopericardio debido a herida por arma blanca

    Directory of Open Access Journals (Sweden)

    Samuel I. Merino Barrera

    2015-10-01

    Full Text Available Hombre de 24 años de edad que ingresó en el hospital debido a una herida por arma blanca penetrante en el hemitórax derecho. La herida, de 3 cm a nivel de la piel, se localizaba a nivel del segundo espacio intercostal derecho y la radiografía de tórax demostró un neumotórax del mismo lado y una colección radiotransparente, por debajo del pericardio parietal, desde el origen de los grandes vasos hasta la porción apical del ventrículo izquierdo.

  11. Estuary regime

    International Nuclear Information System (INIS)

    The primary aim of this research into estuary regime is to provide engineers with an improved method of predicting the long term evolutionary effects of major engineering changes in estuaries. Of specific interest to the Department of Trade and Industry's renewable energy R and D programme is the long term impact of tidal energy barrages on estuarine morphology. It is considered that the approach being taken is the most appropriate line to follow in terms of developing an applicable estuary regime predictive capability. As a consequence it is considered that any further regime model development should be complimentary to this approach. In addition to model development there is still an enormous amount of basic research required in examining sediment transport processes within the estuarine environment. Recently developed models for predicting the motion of fluidised mud on inter-tidal and sub-tidal banks, an important process within the estuarine sediment regime, requires specific field data calibration and validation. The impacts of wave action on sediment mobility on estuarine banks is a further area requiring field measurements. It is recommended that the opportunity be taken to obtain a set of measurements at a site following construction of major engineering works to provide data for future verification of a regime model. Possibilities exist, for example, on the Tees Estuary for such measurements. (author)

  12. Slope stability of moraines, Cordillera Blanca, Peru

    Science.gov (United States)

    Klimes, J.; Novotny, J.

    2012-12-01

    Landslides originating from inner slopes of moraine dams are often capable of producing glacial lakes outburst floods (GLOFs). Therefore assessing stability conditions of the moraines is important for predicting this potentially damaging phenomenon. Characteristics of the basic mechanical properties of the material and geophysical investigations were applied to collect necessary information for slope stability assessment of the Palcacocha Lake moraine dam, Peru. The lake is situated in the Cordillera Blanca Mts. at the altitude of about 4,500m asl and produced catastrophic GLOF in 1941. Another minor flood originated in 2003 due to landslide impact into the lake. Detailed investigations of this landslide site included geomorphological mapping, geophysical investigations and characterization of basic mechanical properties of the forming material. Geomorphological mapping identified dormant landslide with scarp up to 2m high which developed on the edge of the inner moraine slope. It is conditioned by set of parallel extension trenches which also affected the origin of 2003 landslide. Within its scarp area, significant water bearing layer was noticed around 10 m bellow the moraine surface. Three profiles were investigated using electric resistivity tomography performed on 4poing light instrument with 24 electrodes and with spacing ranging from 1 to 4m. Results helped to verify geometry of the main shear plane of the mapped landslide as well as the spacing and depth of extension trenches. Significant heterogeneity in the moraine resistivity characteristics was found. The high resistivity regions are explained by rock block accumulation whereas the low resistivity may represent wet layers within the moraine body. Grain size distribution of 33 disturbed soil samples originating from moraine material within the Cordillera Blanca Mts., Peru were determined and classified according to the UCSC classification system. The samples were taken from moraine dams and slopes

  13. Serological relationships between rice Hoja Blanca Virus AND Echinochloa Hoja Blanca Virus

    Directory of Open Access Journals (Sweden)

    Jorge Madriz

    2016-03-01

    Full Text Available Con el objetivo de determinar si el RHBV (Rice Hoja Blanca Virus y el EHBV (Echinochloa Hoja Blanca Virus se hallan relacionados serológicamente, se produjo un antisuero contra la proteína de nucleocápside del EHBV. Se demostró que ambos virus presentan características que los diferencian a este nivel. Al comparar la proteína de nucleocápside en geles SDS-PAGE de alta resolución, se observó que dicha proteína en el EHBV presenta una masa molecular menor que la del RHBV. El antisuero contra la proteína N del RHBV producido por Espinoza et al. (1992 reconoce la del EHBV por Western blot. Lo anterior indica que son similares y sugiere la presencia de epitopos comunes; además confirma que el EHBV presenta una menor masa molecular que el RHBV. Asimismo, el método de inmunodifusión doble de OUCHTERLONY mostró una identidad parcial de las nucleoproteínas de ambos virus, lo que confirma que ambos virus se encuentran serológicamente relacionados.

  14. Tidal effects on short-term mesozooplankton distribution in small channels of a temperate-turbid estuary, Southwestern Atlantic

    OpenAIRE

    Javier Chazarreta; Monica Susana Hoffmeyer; Diana G. Cuadrado; Anabela Anahí Berasategui

    2015-01-01

    Abstract The short-term variability of mesozooplankton distribution and physicochemical variables was examined in two different channels of the Bahía Blanca Estuary, Argentina, during two tidal cycles. All the physicochemical measurements and mesozooplankton sampling were performed at a fixed site during approximately 22-23 h at 3-h intervals. Pumps were used to obtain surface and bottom mesozooplankton samples and the water speed of each stratum was measured with an Acoustic Doppler Current ...

  15. I Chemistry Conference of West Bahia

    Directory of Open Access Journals (Sweden)

    Boaz Oliveira

    2014-11-01

    Full Text Available The I Chemistry Conference of West Bahia [1] aimed the meeting of the academic community of west Bahia state developing research activities at graduate level and postgraduate ones in several chemistry areas, mainly the analytic chemistry, natural products, theoretical chemistry, medicinal chemistry, chemistry teaching, spectroscopy, materials science, photochemistry and catalysis. Through the plenary lectures, short courses and poster presentation, invited researchers from other institutions and mainly students could share experiences as well as plan collaborations from multi and interdisciplinar nature, enabling a greater scientific aggrandizement of the research developed by emergent groups distributed along the inland cities of Brazil.

  16. Space Radar Image of Bahia

    Science.gov (United States)

    1994-01-01

    This is a color composite image of southern Bahia, Brazil, centered at 15.22 degree south latitude and 39.07 degrees west longitude. The image was acquired by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar aboard the space shuttle Endeavour on its 38th orbit of Earth on October 2, 1994. The image covers an area centered over the Una Biological Reserve, one the largest protected areas in northeastern Brazil. The 7,000-hectare reserve is administered by the Brazilian Institute for the Environment and is part of the larger Atlantic coastal forest, a narrow band of rain forest extending along the eastern coast of Brazil. The Atlantic coastal forest of southern Bahia is one of the world's most threatened and diverse ecosystems. Due to widespread settlement, only 2 to 5 percent of the original forest cover remains. Yet the region still contains an astounding variety of plants and animals, including a large number of endemic species. More than half of the region's tree species and 80 percent of its animal species are indigenous and found nowhere else on Earth. The Una Reserve is also the only federally protected habitat for the golden-headed lion tamarin, the yellow-breasted capuchin monkey and many other endangered species. In the past few years, scientists from Brazilian and international conservation organizations have coordinated efforts to study the biological diversity of this region and to develop practical and economically viable options for preserving the remaining primary forests in southern Bahia. The shuttle imaging radar is used in this study to identify various land uses and vegetation types, including remaining patches of primary forest, cabruca forest (cacao planted in the understory of the native forest), secondary forest, pasture and coastal mangrove. Standard remote-sensing technology that relies on light reflected from the forest canopy cannot accurately distinguish between cabruca and undisturbed forest. Optical remote sensing is also

  17. Space Radar Image of Bahia

    Science.gov (United States)

    1994-01-01

    This is a color composite image of southern Bahia, Brazil, centered at 15.22 degree south latitude and 39.07 degrees west longitude. The image was acquired by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar aboard the space shuttle Endeavour on its 38th orbit of Earth on October 2, 1994. The image covers an area centered over the Una Biological Reserve, one the largest protected areas in northeastern Brazil. The 7,000-hectare reserve is administered by the Brazilian Institute for the Environment and is part of the larger Atlantic coastal forest, a narrow band of rain forest extending along the eastern coast of Brazil. The Atlantic coastal forest of southern Bahia is one of the world's most threatened and diverse ecosystems. Due to widespread settlement, only 2 to 5 percent of the original forest cover remains. Yet the region still contains an astounding variety of plants and animals, including a large number of endemic species. More than half of the region's tree species and 80 percent of its animal species are indigenous and found nowhere else on Earth. The Una Reserve is also the only federally protected habitat for the golden-headed lion tamarin, the yellow-breasted capuchin monkey and many other endangered species. In the past few years, scientists from Brazilian and international conservation organizations have coordinated efforts to study the biological diversity of this region and to develop practical and economically viable options for preserving the remaining primary forests in southern Bahia. The shuttle imaging radar is used in this study to identify various land uses and vegetation types, including remaining patches of primary forest, cabruca forest (cacao planted in the understory of the native forest), secondary forest, pasture and coastal mangrove. Standard remote-sensing technology that relies on light reflected from the forest canopy cannot accurately distinguish between cabruca and undisturbed forest. Optical remote sensing is also

  18. THE PENA BLANCA NATURAL ANALOGUE PERFORMANCE ASSESSMENT MODEL

    International Nuclear Information System (INIS)

    The Nopal I uranium mine in the Sierra Pena Blanca, Chihuahua, Mexico serves as a natural analogue to the Yucca Mountain repository. The Pena Blanca Natural Analogue Performance Assessment Model simulates the mobilization and transport of radionuclides that are released from the mine and transported to the saturated zone. the Pena Blanca Natural Analogue Model uses probabilistic simulations of hydrogeologic processes that are analogous to the processes that occur at the Yucca Mountain site. The Nopal I uranium deposit lies in fractured, welded, and altered rhyolitic ash flow tuffs that overlie carbonate rocks, a setting analogous to the geologic formations at the Yucca Mountain site. The Nopal I mine site has the following characteristics as compared to the Yucca Mountain repository site. (1) Analogous source: UO2 uranium ore deposit = spent nuclear fuel in the repository; (2) Analogous geologic setting: fractured, welded, and altered rhyolitic ash flow tuffs overlying carbonate rocks; (3) Analogous climate: Semiarid to arid; (4) Analogous geochemistry: Oxidizing conditions; and (5) Analogous hydrogeology: The ore deposit lies in the unsaturated zone above the water table. The Nopal I deposit is approximately 8 ± 0.5 million years old and has been exposed to oxidizing conditions during the last 3.2 to 3.4 million years. The Pena Blanca Natural Analogue Model considers that the uranium oxide and uranium silicates in the ore deposit were originally analogous to uranium-oxide spent nuclear fuel. The Pena Blanca site has been characterized using field and laboratory investigations of its fault and fracture distribution, mineralogy, fracture fillings, seepage into the mine adits, regional hydrology, and mineralization that shows the extent of radionuclide migration. Three boreholes were drilled at the Nopal I mine site in 2003 and these boreholes have provided samples for lithologic characterization, water-level measurements, and water samples for laboratory analysis

  19. THE PENA BLANCA NATURAL ANALOGUE PERFORMANCE ASSESSMENT MODEL

    Energy Technology Data Exchange (ETDEWEB)

    G.J. Saulnier Jr; W. Statham

    2006-03-10

    The Nopal I uranium mine in the Sierra Pena Blanca, Chihuahua, Mexico serves as a natural analogue to the Yucca Mountain repository. The Pena Blanca Natural Analogue Performance Assessment Model simulates the mobilization and transport of radionuclides that are released from the mine and transported to the saturated zone. the Pena Blanca Natural Analogue Model uses probabilistic simulations of hydrogeologic processes that are analogous to the processes that occur at the Yucca Mountain site. The Nopal I uranium deposit lies in fractured, welded, and altered rhyolitic ash flow tuffs that overlie carbonate rocks, a setting analogous to the geologic formations at the Yucca Mountain site. The Nopal I mine site has the following characteristics as compared to the Yucca Mountain repository site. (1) Analogous source: UO{sub 2} uranium ore deposit = spent nuclear fuel in the repository; (2) Analogous geologic setting: fractured, welded, and altered rhyolitic ash flow tuffs overlying carbonate rocks; (3) Analogous climate: Semiarid to arid; (4) Analogous geochemistry: Oxidizing conditions; and (5) Analogous hydrogeology: The ore deposit lies in the unsaturated zone above the water table. The Nopal I deposit is approximately 8 {+-} 0.5 million years old and has been exposed to oxidizing conditions during the last 3.2 to 3.4 million years. The Pena Blanca Natural Analogue Model considers that the uranium oxide and uranium silicates in the ore deposit were originally analogous to uranium-oxide spent nuclear fuel. The Pena Blanca site has been characterized using field and laboratory investigations of its fault and fracture distribution, mineralogy, fracture fillings, seepage into the mine adits, regional hydrology, and mineralization that shows the extent of radionuclide migration. Three boreholes were drilled at the Nopal I mine site in 2003 and these boreholes have provided samples for lithologic characterization, water-level measurements, and water samples for laboratory

  20. Structure of Sierra Blanca (Alpujarride Complex, west of the Betic Cordillera)

    OpenAIRE

    Andreo, B.; Sanz de Galdeano, C.

    1995-01-01

    Sierra Blanca, situated in the SW of Málaga, forms part of the Blanca unit, belonging to the Alpujarride Complex of the Betic Cordillera. Its lithologic sequences are made up of a group of migmatites, gneisses and schists and an upper formation of marbles (white dolomitic and the bottom and blue calcareous towards the top), linked with a transitional contact. The structure of Sierra Blanca is comprised of folds, generally isoclinal, with reversed limbs and with important tectonic transpo...

  1. [Ants as biological indicators of human impact in mangroves of the southeastern coast of Bahia, Brazil].

    Science.gov (United States)

    Delabie, Jacques H C; Paim, Valéria R L de M; Do Nascimento, Ivan C; Campiolo, Sofia; Mariano, Cléa dos S F

    2006-01-01

    Mangroves are common in estuaries along the Atlantic coast of Brazil. Although plant diversity is low, this ecosystem supports a range of animals, offering some resources for non-aquatic organisms. Many insects live in mangroves and, between them, many ant species that are exclusively arboreous. Mangroves throughout the world suffer from high levels of human impact, and this is particularly true for southeastern Bahia, where land-uses include traditional crab and fish exploitation, urban development, refuse pollution, recreation, and timber extraction. The ants of 13 mangrove sites, representing a range of levels of human use, have been studied along 250 km of the southern Bahia littoral, between Itacaré and Porto Seguro. Ants were sampled both inside and on the periphery of the tidal zone, using entomological rainbow, baiting, collect of hollow branches and pit-fall. A total of 108 species have been collected, with the richest genera being Camponotus and Pseudomyrmex, and the most frequent belonging to the genera Azteca and Crematogaster. The ant community living on the periphery of mangrove areas is rather homogeneous regardless of the degree of environmental perturbation, but varies markedly with the disturbance inside the mangroves themselves. The evolution of richness of the both communities, mangrove and periphery, is negatively related to the human effects, even limited to the periphery. Ant communities therefore have the potential to be useful as biological indicators of ecological impacts of land-use in these mangrove systems. PMID:17144131

  2. THE PENA BLANCA NATURAL ANALOGUE PERFORMANCE ASSESSMENT MODEL

    Energy Technology Data Exchange (ETDEWEB)

    G. Saulnier and W. Statham

    2006-04-16

    The Nopal I uranium mine in the Sierra Pena Blanca, Chihuahua, Mexico serves as a natural analogue to the Yucca Mountain repository. The Pena Blanca Natural Analogue Performance Assessment Model simulates the mobilization and transport of radionuclides that are released from the mine and transported to the saturated zone. The Pena Blanca Natural Analogue Performance Assessment Model uses probabilistic simulations of hydrogeologic processes that are analogous to the processes that occur at the Yucca Mountain site. The Nopal I uranium deposit lies in fractured, welded, and altered rhyolitic ash-flow tuffs that overlie carbonate rocks, a setting analogous to the geologic formations at the Yucca Mountain site. The Nopal I mine site has the following analogous characteristics as compared to the Yucca Mountain repository site: (1) Analogous source--UO{sub 2} uranium ore deposit = spent nuclear fuel in the repository; (2) Analogous geology--(i.e. fractured, welded, and altered rhyolitic ash-flow tuffs); (3) Analogous climate--Semiarid to arid; (4) Analogous setting--Volcanic tuffs overlie carbonate rocks; and (5) Analogous geochemistry--Oxidizing conditions Analogous hydrogeology: The ore deposit lies in the unsaturated zone above the water table.

  3. THE PENA BLANCA NATURAL ANALOGUE PERFORMANCE ASSESSMENT MODEL

    International Nuclear Information System (INIS)

    The Nopal I uranium mine in the Sierra Pena Blanca, Chihuahua, Mexico serves as a natural analogue to the Yucca Mountain repository. The Pena Blanca Natural Analogue Performance Assessment Model simulates the mobilization and transport of radionuclides that are released from the mine and transported to the saturated zone. The Pena Blanca Natural Analogue Performance Assessment Model uses probabilistic simulations of hydrogeologic processes that are analogous to the processes that occur at the Yucca Mountain site. The Nopal I uranium deposit lies in fractured, welded, and altered rhyolitic ash-flow tuffs that overlie carbonate rocks, a setting analogous to the geologic formations at the Yucca Mountain site. The Nopal I mine site has the following analogous characteristics as compared to the Yucca Mountain repository site: (1) Analogous source--UO2 uranium ore deposit = spent nuclear fuel in the repository; (2) Analogous geology--(i.e. fractured, welded, and altered rhyolitic ash-flow tuffs); (3) Analogous climate--Semiarid to arid; (4) Analogous setting--Volcanic tuffs overlie carbonate rocks; and (5) Analogous geochemistry--Oxidizing conditions Analogous hydrogeology: The ore deposit lies in the unsaturated zone above the water table

  4. Estuary Classification Revisited

    OpenAIRE

    Guha, Anirban; Lawrence, Gregory A.

    2012-01-01

    This paper presents the governing equations of a tidally-averaged, width-averaged, rectangular estuary in completely nondimensionalized forms. Subsequently, we discover that the dynamics of an estuary is entirely controlled by only two variables: (i) the Estuarine Froude number, and (ii) a nondimensional number related to the Estuarine Aspect ratio and the Tidal Froude number. Motivated by this new observation, the problem of estuary classification is re-investigated. Our analysis shows that ...

  5. Prediction in Ungauged Estuaries

    OpenAIRE

    J. I. A. Gisen

    2015-01-01

    Estuaries have been used for settlement by humans since 5000-9000 years ago [Day et al., 2012]. The calm environment and nutrient-rich soil encouraged the development of ports and agriculture. Over-development however has put estuaries in unhealthy condition, where the water is polluted (excessive nutrient or salt intrusion problem) and natural morphodynamic equilibrium is disturbed. This implies that the need for effective estuarine management is crucial. Unfortunately, most of the estuaries...

  6. Estuary Classification Revisited

    CERN Document Server

    Guha, Anirban

    2012-01-01

    The governing equations of a tidally averaged, width averaged, rectangular estuary has been investigated. It's theoretically shown that the dynamics of an estuary is entirely controlled by three parameters: (i) the Estuarine Froude number, (ii) the Tidal Froude number and (iii) the Estuarine Aspect ratio. The momentum, salinity and integral salt balance equations can be completely expressed in terms of these control variables. The estuary classification problem has also been reinvestigated. It's found that these three control variables can completely specify the estuary type. Comparison with real estuary data shows very good match. Additionally, we show that the well accepted leading order estuarine integral salt balance equation is inconsitent with the leading order salinity equation in an order of magnitude sense.

  7. Mentiras por omisión en la "raza blanca"

    Directory of Open Access Journals (Sweden)

    Ana Silvia Simesen de Bielke

    2003-01-01

    Full Text Available La razón instrumental blanca es hija legítima de la sociedad capitalista y, como tal, ha diseñado todos los ámbitos de la organización burocrática, el método científico, los distintos dispositivos del cuerpo social y los aparatos jurídicos e ideológicos. El reduccionismo liberticida, por ejemplo, no es un accidente epistemológico, sino que su vocación homogeneizadora ha respondido y responde a una forma particular de organización económica y política: la concepción reduccionista del mundo, la revolución industrial y la economía capitalista son los componentes filosófico, tecnológico y económico de un mismo proceso excluyente. El mismo, a través de sus avances científico-tecnológicos y su mentira civilizatoria, es quien va destruyendo paulatinamente nuestro oikos, nuestra simbiosis originaria con lo natural, nuestra sensibilidad, nuestra diversidad, únicos sustentos para la conservación de toda vida sobre el planeta. Quienes, como intelectuales, han desmontado esta estructura de la Razón Blanca falócrata colonizadora a través de sus dicotomías (humanidad y naturaleza, hombre y mujer, ciudad y pueblo, metrópolis y colonia, trabajo y vida, naturaleza y cultura, deben plantearse el imperativo moral de comprometerse con la denuncia pública acerca de este maridaje entre ciencia y fuerza, ciencia y militarismo, ciencia y patriarcado. Es el momento del desmontaje también de todas las ‘razones’ descendientes de la Razón Blanca: ¿porqué no pensar también en nuestra ‘razón académica’?

  8. El pintor renacentista Jácome de Blancas

    OpenAIRE

    Collar de Cáceres, Fernando

    2010-01-01

    Jácome de Blancas es pintor documentado en Medina del Campo (Valladolid) entre 1543 y 1554 Y activo acaso hasta cerca de 1574. Ninguna de sus obras de que hay memoria, realizadas con artistas como Luis Vélez o Leonardo de Carrión, se han conservado, pero hay razones para asegurar que se trata del maestro Jácome que realizó en 1550 el retablo mayor de Santa María del Castillo en Olmedo (Valladolid), y con él deben relacionarse otras pinturas existentes en las localidades vallisoletanas de Medi...

  9. Estudo retrospectivo de latrodectismo na Bahia, Brasil

    Directory of Open Access Journals (Sweden)

    Rejâne Maria Lira-da-Silva

    1995-09-01

    Full Text Available O trabalho apresenta um estudo retrospectivo de setenta e sete casos de latrodectismo no Estado da Bahia, Brasil, de agosto de 1980 a julho de 1990. Os dados foram levantados nos livros de registro e arquivo de fichas do CIAVE. O agente etiológico em 28% dos acidentes aracnídeos foi a espécie L. curacaviensis e a maior incidência foi registrada no meio urbano (57%, em indivíduos do sexo masculino (70% e faixa etária de 10 a 29 anos (58%. Os principais sinais locais foram dor (56%, pápula eritematosa (21% e edema discreto (17%, e os sistêmicos foram dor em membros inferiores (29%, tremores e contraturas (29%, sudorese (28% parestesia em membros (21% e dor abdominal (17%. O tratamento foi sintomático em 67% dos casos e específico em 21%. O tempo de permanência hospitalar após o uso do soro antilatrodectus foi menor que 24 horas em 64% dos casos.This work is a retrospective study of latrodectism in the State of Bahia, Brazil, from August 1980 to July 1990. The data concerning the accidents were obtained from file cards at the Antivenom Information Center of Bahia (AVICB. Latrodectus curacavienis was the ethiologic agent identified in 28% of the arachnid accidents. The major incidence was registered in urban area (57% affecting men (70% more than women, with 10 to 29year-old age group (58%. Local pain (56%, erythematous papula (29% and light oedema (17% were the principal local symptoms. Pain in the limbs (29%, tremor and rigidities (29%, sweating (28%, limbs and arms paresthesia (21% and abdominal pain (17% were systemic ones. The treatment was mainly symptomatic (67% and antivenin serum was used in 21% of the cases. After serotherapy, 64% of the patients left the hospital within less than 24 hours.

  10. Estudo retrospectivo de latrodectismo na Bahia, Brasil

    OpenAIRE

    Rejâne Maria Lira-da-Silva; Graciela Brige Matos; Roney Orismar Sampaio; Tania Brazil Nunes

    1995-01-01

    O trabalho apresenta um estudo retrospectivo de setenta e sete casos de latrodectismo no Estado da Bahia, Brasil, de agosto de 1980 a julho de 1990. Os dados foram levantados nos livros de registro e arquivo de fichas do CIAVE. O agente etiológico em 28% dos acidentes aracnídeos foi a espécie L. curacaviensis e a maior incidência foi registrada no meio urbano (57%), em indivíduos do sexo masculino (70%) e faixa etária de 10 a 29 anos (58%). Os principais sinais locais foram dor (56%), pápula ...

  11. Penobscot Estuary (Maine) Monitoring

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA's NEFSC collects fisheries data from the Penobscot Estuary using several types of fishing gear. The data is used to determine species presence, relative...

  12. Bibliography on Alaska estuaries

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This bibliography was compiled to assist in working up “profiles” for the estuaries in Alaska. The purpose of the profiles is to list in a narrative form the...

  13. Market study of pipe gas for the Bahia State, Brazil

    International Nuclear Information System (INIS)

    The energy market that will be conquered by the natural gas in Bahia State is identified, allowing measure the potentiality of gas industry and the gas supply, that the State will plead to the Federal Government. (C.G.C.)

  14. Huanglongbing Surveillance Program Actions in the State of Bahia, Brazil

    OpenAIRE

    Silva, S. X.B.; Andrade, E. C.; Nascimento, A. S.; Barbosa, C. J.; Girardi, E. A.; Astúa, J. F.; Laranjeira, F. F.

    2014-01-01

    Huanglongbing (HLB) is found in South/Southeastern states of Brazil, but citrus is grown all over the country. For that reason, surveillance procedures should be carried out frequently and contingency plans developed. This study reports the actions of the State Bureau of Agricultural Defense of Bahia (ADAB), for a commercial orchard in Bom Jesus da Lapa (state of Bahia, Northeastern Brazil) suspected of having HLB symptomatic plants. Besides having a Contingency Plan, a protocol that establis...

  15. Major QTLs control resistance to Rice Hoja Blanca Virus and its vector Tagosodes orizicolus

    OpenAIRE

    Romero, Luz E.; Lozano, Ivan; Garavito, Andrea; Carabali, Silvio J.; Triana, Monica; Villareal, Natalia; Reyes, Luis; Duque, Myriam C.; Martinez, César P.; Calvert, Lee; Lorieux, Mathias

    2014-01-01

    Rice hoja blanca (white leaf) disease can cause severe yield losses in rice in the Americas. The disease is caused by the rice hoja blanca virus (RHBV), which is transmitted by the planthopper vector Tagosodes orizicolus. Because classical breeding schemes for this disease rely on expensive, time-consuming screenings, there is a need for alternatives such as marker-aided selection. The varieties Fedearroz 2000 and Fedearroz 50, which are resistant to RHBV and to the feeding damage caused by T...

  16. Holocene denudation and landscape deformation in the Cordillera Blanca, Peru

    Science.gov (United States)

    Hodson, K. R.; Hall, S. R.; Michalak, M.; Farber, D.; Hourigan, J. K.

    2012-12-01

    Active orogenic systems are subject to a host of processes that influence their topographic and structural evolution. Broadly speaking, these processes can be divided into two general groups: tectonics and climate. Both are capable of inducing profound changes within an orogen, although many specifics regarding their forcings, interactions, and feedbacks remain unclear. Here, we address the evolution of the Cordillera Blanca Mountain Range of northern Peru: an elevated, high-relief, 200km long string of glaciated peaks along the spine of the Andes. The striking Cordillera Blanca Detachment Fault (CBDF) is actively facilitating the production of several kilometers of relief along the western flank of the range, and abundant records of past glaciations span from >440 ka to the present. Thus, tectonics (active faulting) and climate (glacial erosion) are operating in tandem to produce some of the highest topography in the western hemisphere, affording the opportunity to investigate their potential interactions. Through the use of cosmogenic 10Be, low temperature thermochronology and digital terrain analysis we characterize the rates of landscape change as well as the present morphology. Significant variation in range elevation (maximum, mean, modal and minimum), relief (local and within basins) and slope (maximum, mean and minimum) exist along the strike of the range, potentially reflecting variable displacement along the CBDF, varying degrees of glacial erosion along the mountain range, or some combination of the two. The morphology of the adjacent supradetachment basin varies as well, containing zones with distinct styles of faulting and basin growth likely defined by the segmentation history of the CBDF. New thermochronologic data extends the current dataset, which we combine with 10Be basin-averaged erosion rates from basins along the range. These two datasets constrain the exhumational and erosional history of the range-forming Cordillera Blanca Batholith from the

  17. Pena Blanca uranium deposits and ash-flow tuffs relationship

    International Nuclear Information System (INIS)

    The Pena Blanca uranium deposits (Chihuahua, Mexico) are associated with a Tertiary sequence of ash-flow tuffs. Stratigraphic control is dominant and uranium mineralization occurs in stratiform and fracture-controlled deposits within 44 My-old units: Nopal Rhyolite and Escuadra Rhyolite. These units consist of highly vapor-phase crystallized ash-flow tuffs. They contain sanidine, quartz and granophyric phenocrysts, and minor ferromagnesian silicates. Nopal and Escuadra units are high-silica alkali-rich rhyolites that have a primary potassic character. The trace-element chemistry shows high concentrations in U-Th-Rb-Cs and low contents in Ba-Sr-Eu. These chemical properties imply a genetic relationship between deposits and host-units. The petrochemical study show that the Nopal Rhyolite and Escuadra Rhyolite are the source of U and of hydrothermal solutions

  18. NEPmap (National Estuary Program Mapper)

    Data.gov (United States)

    U.S. Environmental Protection Agency — The NEPmap is designed to provide information in context with National Estuary Program Study Areas. There are 28 National Estuary Programs (NEPs) in the U.S.that...

  19. Resting energy expenditure in white and non-white severely obese women Gasto energético en reposo de mujeres obesas severas blancas y no blancas

    Directory of Open Access Journals (Sweden)

    L. Mika Horie

    2009-12-01

    Full Text Available This study aimed to compare the resting energy expenditure (REE of white and non-white severely obese Brazilian women. REE was examined in 83 severely obese Brazilian women (n = 58 white and 25 non-white with mean (± SD age 42.99 ± 11.35 and body mass index 46.88 ± 6.22 kg/m² who were candidates for gastric bypass surgery. Body composition was assessed by air displacement plethysmography (ADP BOD PODÒ body composition system (Life Measurement Instruments, Concord, CA and REE was measured, under established protocol, with an open-circuit calorimeter (Deltatrac II MBM-200, Datex-Ohmeda, Madison, WI, USA. There was no significant difference between the REE of white and non-white severely obese women (1,953 ± 273 and 1,906 ± 271 kcal/d, respectively; p = 0.48. However, when adjusted for fat free mass (MLG, REE was significantly higher in nonwhite severely obese women (difference between groups of 158.4 kcal, p El presente estudio tenía como objetivo comparar el gasto energético en reposo (GER de mujeres brasileñas obesas severas, blancas y no blancas. Se examinó el GER en 83 mujeres brasileñas obesas severas (n = 58 blancas y 25 no blancas con un promedio de edad (± SD de 42,99 ± 11,35 e índice de masa corporal de 46,88 ± 6,22 kg/m², que serían sometidas a cirugía de bypass gástrico. Se evaluó la composición corporal por medio de una pletismografía por desplazamiento de aire (ADP BOD PODÒ sistema de composición corporal (de Life Measurement Instruments, Concord, California, EE.UU. y se evaluó el GER, de acuerdo con el protocolo establecido, con un calorímetro de circuito abierto (fabricado por Deltatrac II MBM-200, Datex-Ohmeda, Madison, Wisconsin, EE.UU.. No se encontraron diferencias significativas entre el GER de mujeres obesas severas blancas y no blancas (1.953 ± 273 y 1.906 ± 271 kcal/d, respectivamente; p = 0,48. Sin embargo, al ajustarse en masa libre de grasa (FFM, por sus siglas en inglés, el GER fue

  20. 33 CFR 165.771 - Safety Zone; Bahia de Ponce, Puerto Rico

    Science.gov (United States)

    2010-07-01

    ..., Puerto Rico 165.771 Section 165.771 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... Zone; Bahia de Ponce, Puerto Rico (a) Location. The following area is established as a safety zone... Bahia de Ponce, on approach to or departure from the Puerto de Ponce waterfront facility in Bahia...

  1. The Cordillera Blanca normal fault and its contribution to the Andean topographic evolution (northern Peru)

    Science.gov (United States)

    Margirier, Audrey; Robert, Xavier; Schwartz, Stéphane; Audin, Laurence

    2015-04-01

    Nature and localization of Quaternary tectonics remains largely unconstrained in Peruvian Andes as well as the mechanism driving rock uplift. The Cordillera Blanca normal fault accommodates extension in a convergent context. The fault system trends parallel to the subduction zone, just above the Peruvian flat-slab, and separate the Cordilleras Blanca and Negra. The Cordillera Blanca batholith (8-5 Ma) is an elongated pluton, emplaced at ~6 km depth in the Jurassic sedimentary country rocks. The Cordillera Blanca range (6768 m) that comprises the highest Peruvian peak built the footwall of the fault. The ~200 km-long fault has showed ~4500 m of vertical displacement since 5 Ma. This normal fault is described as active despite the lack of historical seismicity and constitutes a striking singularity within the prevailing compressional setting of the Andean orogeny. This region is a perfect target to explore the contribution of large normal fault in relief building. Our goals are to determine if the fault was pre-existing before the Cordillera Blanca batholith emplacement, when it has been reactivated and how does it interact with the batholith exhumation. For that purpose, we focus on brittle deformation analysis from a regional scale (faults trends) to outcrop scale (fault planes, striaes and kinematics). We present here new structural data and focal mechanisms indicating a senestral transtensive component on the Cordillera Blanca normal fault and a regional extensional regime in the Cordillera Negra area. We compare the paleotensors obtained from the inversion of the microstructural data and focal mechanisms with the exhumation history deduced from the thermochronological data to constrain the role of the normal fault in relation with relief building. We propose that the Cordillera Blanca normal fault is an inherited tectonic feature reactivated in transtension after the slab flattening at ~8 Ma. The differential exhumation of the Cordillera Blanca with respect to

  2. Characterization of artisanal fishery with camboa net at the Cassurubá Extractive Reserve, Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Matheus Oliveira Freitas

    2013-06-01

    Full Text Available Regarded as relevant nursery areas for fishes, the estuarine systems shelter many commercially important species. From October 2008 to November 2009, we investigated the ichthyofaunal composition and described the routine of artisanal fishing with camboa net in the estuary at the Cassurubá Extractive Reserve, Bahia, Brazil. Samplings were conducted in three rivers, during the new and full moons. A total of 1,074 fishes were caught in 17 fisheries with nets, belonging to 26 species and 17 families, with a total biomass of 378.4 kg. The Gerreidae and Centropomidae families were the most abundant ones, and there was a predominance of catches. Out of the total, 50% of individuals which were at the first gonadal maturation (L50 described in the literature had a size less than the expected one, indicating growth overfishing. We recommends the establishment of management systems shared between the actors involved in this fishing art and the Cassurubá Extractive Reserve managers, in order to reduce the capture of individuals below the first gonadal maturation size.

  3. Structure of Sierra Blanca (Alpujarride Complex, west of the Betic Cordillera

    Directory of Open Access Journals (Sweden)

    Andreo, B.

    1995-04-01

    Full Text Available Sierra Blanca, situated in the SW of Málaga, forms part of the Blanca unit, belonging to the Alpujarride Complex of the Betic Cordillera. Its lithologic sequences are made up of a group of migmatites, gneisses and schists and an upper formation of marbles (white dolomitic and the bottom and blue calcareous towards the top, linked with a transitional contact. The structure of Sierra Blanca is comprised of folds, generally isoclinal, with reversed limbs and with important tectonic transpositions, the direction of which is approximately E-W in the eastern area and N-S and E-W in the West. In both areas the folds present opposing vergences, consistently towards the interior of the sierra. The origin of these structures is explained with a model of westerly movements of the Blanca unit, in relation to the Los Reales unit, with the formation of frontal and lateral folds. In its advancement, the western part of Sierra Blanca underwent an important anti-clockwise rotation responsible for the co-existence of folds in N-S and E-W directions. These structures occurred under ductile conditions, owing to the presence of important overthrusting peridotitic masses of the Los Reales unit. This model of westerly displacement is inserted in the process undergone by the Betic-Rif Internal Zones (with Blanca and Los Reales units included which occurred at the end of the Oligocene-Early Miocene when the Gibraltar arch began to be formed.Sierra Blanca, situada al SW de Málaga, forma parte de la unidad de Blanca que pertenece al complejo Alpujárride de la Cordillera Bética. Su secuencia litológica está compuesta por un conjunto inferior de migmatitas, gneises y esquistos, y por una formación superior de mármoles, blancos dolomíticos en la base y mármoles calizos azules hacia la parte superior, entre los que existe un tránsito gradual. La estructura de Sierra Blanca está formada por pliegues, generalmente isoclinales, con flancos invertidos que muestran

  4. Efecto de dos agentes remineralizantes en lesiones de mancha blanca: Estudio in Vitro

    Directory of Open Access Journals (Sweden)

    Grace Maribel Chicaiza Naranjo

    2016-07-01

    Full Text Available La caries dental continúa siendo la enfermedad con mayor prevalencia en el mundo, es importante diagnosticarla y tratarla desde su estadio inicial de mancha blanca ya que es una lesión reversible. La aparición de nuevos materiales como el fosfopéptido de caseína- estabilizado de fosfato de calcio amorfo (Recaldent para remineralizar las manchas blancas nos brindan más opciones terapéuticas en Odontopediatria. Objetivo: Evaluar in-vitro la remineralización de la mancha blanca a partir de la aplicación de las pastas dentales a base de Recaldent: Mi Paste y Mi Paste Plus en dientes temporales. Materiales y métodos: Fueron utilizados 30 dientes temporales sanos obtenidos por movilidad fisiológica, divididos en Grupo A 15 dientes, Grupo B 15 dientes, en ambos grupos se generó la mancha blanca con un agente desmineralizante, para la remineralización  al grupo A se le aplicó Mi Paste, al grupo B Mi Paste Plus, se evaluó el grado de desmineralización y remineralización mediante un láser, Diagnodent, después de 10 días de la aplicación de las pastas dentales. Resultados: Se demostró que en ambos grupos existió remineralización de la mancha blanca, 14.73 grados de fluorescencia con Mi Paste y 15.67 grados con Mi Paste Plus, siendo mayor el grupo B. Conclusión: Concluyendo que, si existe remineralización de la mancha blanca a partir de la aplicación de pasta dental, Mi Paste y Mi Paste Plus con derivados de la caseína (Recaldent en dientes temporales, estudio in vitro. Logrando mejores resultados al utilizar Mi Paste Plus. 

  5. Ecology of estuaries

    International Nuclear Information System (INIS)

    Ecology of Estuaries: Anthropogenic Effects represents the most definitive and comprehensive source of reference information available on the human impact on estuarine ecosystems. The book discusses both acute and insidious pollution problems plaguing these coastal ecotones. It also provides a detailed examination of the deleterious and pervasive effects of human activities on biotic communities and sensitive habitat areas in estuaries. Specific areas covered include organic loading, oil pollution, polynuclear aromatic hydrocarbons, chlorinated hydrocarbons, heavy metals, dredging and dredge-spoil disposal, radionuclides, as well as other contaminants and processes. The diverse components of these anthropogenic influences are assembled in an organized framework and presented in a clear and concise style that will facilitate their understanding

  6. Envenenamento por Tityus stigmurus (Scorpiones; Buthidae) no Estado da Bahia, Brasil Envenomation by Tityus stigmurus (Scorpiones; Buthidae) in Bahia, Brazil

    OpenAIRE

    Rejâne Maria Lira-da-Silva; Andréa Monteiro de Amorim; Tania Kobler Brazil

    2000-01-01

    A presente investigação é um estudo descritivo dos aspectos clínicos dos acidentes causados pelo escorpião Tityus stigmurus no Estado da Bahia, Brasil. Foram analisados 237 casos confirmados, tratados pelo Centro de Informações Antiveneno da Bahia (CIAVE), no período de 1982-1995. O envenenamento por T. stigmurus caracterizou-se por manifestações locais: dor (94,4%), dormência (30%), edema (17,8%), eritema (17,8%) e parestesia (15,6%) e gerais: cefaléia (14%), vômitos (4,4%) e sudorese (3,3%)...

  7. Eschar-associated Spotted Fever Rickettsiosis, Bahia, Brazil

    OpenAIRE

    Silva, Nanci; Eremeeva, Marina E.; Rozental, Tatiana; Ribeiro, Guilherme S.; Paddock, Christopher D.; Ramos, Eduardo Antonio G.; Favacho, Alexsandra R.M.; Reis, Mitermayer G.; Dasch, Gregory A.; Elba R.S. Lemos; Ko, Albert I.

    2011-01-01

    In Brazil, Brazilian spotted fever was once considered the only tick-borne rickettsial disease. We report eschar-associated rickettsial disease that occurred after a tick bite. The etiologic agent is most related to Rickettsia parkeri, R. africae, and R. sibirica and probably widely distributed from São Paulo to Bahia in the Atlantic Forest.

  8. A new species of Thelypteris (Thelypteridaceae) from southern Bahia, Brazil

    OpenAIRE

    Matos, Fernando B.; Smith, Alan R.; Labiak, Paulo H.

    2010-01-01

    A new species, Thelypteris beckeriana (Thelypteridaceae), is here described. It belongs to subgenus Goniopteris because of the presence of forked and stellate hairs on some parts of its blades. It is a narrow endemic to the Atlantic Rain Forest of southern Bahia, Brazil. A complete description, illustrations, and comparisons with the most similar species are provided.

  9. Glacial lake outburst floods in the area of Huarás, Cordillera Blanca, Peru

    Czech Academy of Sciences Publication Activity Database

    Vilímek, V.; Zapata, M. L.; Klimeš, Jan

    2005-01-01

    Roč. 39, - (2005), s. 115-124. ISSN 0081-6434 Grant ostatní: GA MŠk(CZ) LA 157 Institutional research plan: CEZ:AV0Z30460519 Keywords : GLOFs * Cordillera Blanca * Peru Subject RIV: DC - Siesmology, Volcanology, Earth Structure

  10. STRATIGRAPHY OF THE PB-1 WELL, NOPAL 1 URANIUM DEPOSIT, PENA BLANCA, CHIHUAHUA, MEXICO

    Energy Technology Data Exchange (ETDEWEB)

    P. Dobson

    2005-09-14

    The objectives of this report are: (1) Stratigraphic study part of integrated research project examining migration of radionuclides at Pena Blanca; (2) Immediate objectives of study include: locate stratigraphic contacts in third dimension; measure rock properties (matrix permeability, porosity, mineralogy, cation exchange capacity) of cored section; determine fracture frequency and orientation; (3) Results of study serve as primary inputs to flow and transport models.

  11. STRATIGRAPHY OF THE PB-1 WELL, NOPAL 1 URANIUM DEPOSIT, PENA BLANCA, CHIHUAHUA, MEXICO

    International Nuclear Information System (INIS)

    The objectives of this report are: (1) Stratigraphic study part of integrated research project examining migration of radionuclides at Pena Blanca; (2) Immediate objectives of study include: locate stratigraphic contacts in third dimension; measure rock properties (matrix permeability, porosity, mineralogy, cation exchange capacity) of cored section; determine fracture frequency and orientation; (3) Results of study serve as primary inputs to flow and transport models

  12. Can cosmic ray exposure dating reveal the normal faulting activity of the Cordillera Blanca Fault, Peru?

    Directory of Open Access Journals (Sweden)

    L.L. Siame

    2006-12-01

    Full Text Available The build-up of in situ-produced cosmogenic 10Be within bedrock scarps and escarpments associated to the Cordillera Blanca Normal Fault, Peru, was measured to evaluate, through Cosmic Ray Exposure dating, its normal faulting activity. The highest mountain peaks in Peru belong to the 210 km-long, NW- striking, Cordillera Blanca. Along its western border, the Cordillera Blanca Normal Fault is responsible for a vertical relief over 4.4 km, whose prominent 2 km high escarpment is characterized by ~1 km-high triangular facets corresponding to vertical displacements cumulated during the last 1-2 million years. At a more detailed scale, this fault system exhibits continuous geomorphic evidence of repeated displacements, underlined by 2 to 70 m-high scarps, corresponding to vertical displacements cumulated since Late Pleistocene and Holocene periods. Although microseismicity occurs along the Cordillera Blanca Normal Fault, no major historical or instrumental earthquake has been recorded since the beginning of the Spanish settlement in the 16th century. To evaluate the vertical slip rate along the major 90 km-long central segment of the Cordillera Blanca Normal Fault, the Quaternary fault escarpment (i.e., triangular facet, as well as the bedrock fault scarp, have been sampled for 10Be Cosmic Ray Exposure dating. Even if the uppermost part of the triangular facets have been resurfaced by the Last Glacial Maximum glaciers, our results allow to estimate a vertical slip-rate of 3±1 mm/yr, and suggest at least 2 seismic events during the last 3000 years.

  13. Indian estuaries: Dynamics, ecosystems, and threats

    Digital Repository Service at National Institute of Oceanography (India)

    Shetye, S.R.

    ARTICLE Indian estuaries: Dynamics, ecosystems, and threats Satish R. Shetye National Institute of Oceanography Dona Paula, Goa - 403 004. e-mail: shetye@nio.org Received May 11, 2011 Abstract Indian estuaries have special features that are derived from... the tide pulls the mixed water out of the estuary through its mouth. Different processes within an estuary contribute to mixing of the two waters, the important among these in the Mandovi estuary are: influence of the tide on the advective field within...

  14. Regional Analysis of the Hazard Level of Glacial Lakes in the Cordillera Blanca, Peru

    Science.gov (United States)

    Chisolm, Rachel E.; Jhon Sanchez Leon, Walter; McKinney, Daene C.; Cochachin Rapre, Alejo

    2016-04-01

    The Cordillera Blanca mountain range is the highest in Peru and contains many of the world's tropical glaciers. This region is severely impacted by climate change causing accelerated glacier retreat. Secondary impacts of climate change on glacier retreat include stress on water resources and the risk of glacial lake outburst floods (GLOFs) from the many lakes that are forming and growing at the base of glaciers. A number of GLOFs originating from lakes in the Cordillera Blanca have occurred over the last century, several of which have had catastrophic impacts on cities and communities downstream. Glaciologists and engineers in Peru have been studying the lakes of the Cordillera Blanca for many years and have identified several lakes that are considered dangerous. However, a systematic analysis of all the lakes in the Cordillera Blanca has never before been attempted. Some methodologies for this type of systematic analysis have been proposed (eg. Emmer and Vilimek 2014; Wang, et al. 2011), but as yet they have only been applied to a few select lakes in the Cordillera Blanca. This study uses remotely sensed data to study all of the lakes of the Glacial Lake Inventory published by the Glaciology and Water Resources Unit of Peru's National Water Authority (UGRH 2011). The objective of this study is to assign a level of potential hazard to each glacial lake in the Cordillera Blanca and to ascertain if any of the lakes beyond those that have already been studied might pose a danger to nearby populations. A number of parameters of analysis, both quantitative and qualitative, have been selected to assess the hazard level of each glacial lake in the Cordillera Blanca using digital elevation models, satellite imagery, and glacier outlines. These parameters are then combined to come up with a preliminary assessment of the hazard level of each lake; the equation weighting each parameter draws on previously published methodologies but is tailored to the regional characteristics

  15. Energy balance from Bahia state 2011 - series: 1994-2010

    International Nuclear Information System (INIS)

    The present Energy Balance is constituted of six chapters, as follows: the chapter 1 approaches the profile of the energy system, showing the structure of the Bahia state energy matrix i n the year of 2010, and the modifications occurred during the period of 1994-2010; the chapter 2 analyses the evolution during the period of 1994-2010 of the energy offer with aspects of production, exports, imports and consumption; the chapter 3 comprised the evolution of energy consumption by sources and social-economic sectors; chapter 4 focus the evolution of state energy self-sufficiency, confronting the primary energy production with the energy total demand; the chapter 5 contains the balance of the energy transformation centers of the Bahia state; and the chapter 6 contains the consolidated matrixes expressed in the period of 1980, 1985 and 1990-2010

  16. New species of Cyclodontina from Bahia, Brazil (Gastropoda, Pulmonata, Odontostomidae

    Directory of Open Access Journals (Sweden)

    Rodrigo B. Salvador

    2014-12-01

    Full Text Available A new species of pulmonate snail was recently collected in a small forest fragment in the city of Bom Jesus da Lapa, Bahia state, Brazil. Bahia is known for a high diversity of land snails and Bom Jesus da Lapa is an interesting locality, since it is close to the interface between two major Brazilian biomes: Cerrado and Caatinga. The new species is described as Cyclodontina tapuia sp. nov. and can be easily identified by its brown shell, conical spire, convex whorls, a sculpture comprised of strong ribs, and an aperture with four barriers: a median parietal tooth, a median palatal tooth, a median basal tooth and a strong columellar lamella. This discovery is also a reminder of how little the Brazilian continental molluscan fauna is known and of the urgency in studying and preserving the rich (though usually overlooked fauna of the Caatinga.

  17. [Retrospective study on Latrodectus stings in Bahia, Brazil].

    Science.gov (United States)

    Lira-da-Silva, R M; Matos, G B; Sampaio, R O; Nunes, T B

    1995-01-01

    This work is a retrospective study of latrodectism in the State of Bahia, Brazil, from August 1980 to July 1990. The data concerning the accidents were obtained from file cards at the Antivenom Information Center of Bahia (AVICB). Latrodectus curacavienis was the ethiologic agent identified in 28% of the arachnid accidents. The major incidence was registered in urban area (57%) affecting men (70%) more than women, with 10 to 29 year-old age group (58%). Local pain (56%), erythematous papula (29%) and light oedema (17%) were the principal local symptoms. Pain in the limbs (29%), tremor and rigidities (29%), sweating (28%), limbs and arms paresthesia (21%) and abdominal pain (17%) were systemic ones. The treatment was mainly symptomatic (67%) and antivenin serum was used in 21% of the cases. After serotherapy, 64% of the patients left the hospital within less than 24 hours. PMID:7480914

  18. Clinical tomographic correlations of 220 patients with neurocisticercosis, Bahia, Brazil

    OpenAIRE

    Antônio de Souza Andrade-Filho; Luiz Frederico da Silva Figuerôa; Victor Mascarenhas Andrade-Souza

    2007-01-01

    Neurocysticercosis (NCC) is a common parasitic disease in our region, presenting diversity of neurological symptoms and signs. The present study has as primary objective an evaluation of the NCC's clinical and epidemiological profile within Bahia State, by means of a prospective study of 220 patients diagnosed from March 1988 to March 1999, with a follow-up of six months. Exams, such as Computed Cranial Tomography Scan (CT), Cerebral Spine Fluid (CSF) and Electroencephalogram (EEG), were acco...

  19. MARTHA DANTAS: o ensino da geometria na Bahia

    OpenAIRE

    Maria Célia Leme da Silva; Kátia Cristina Camargo

    2008-01-01

    This article is part of project of research which intends to build up Historical facts of mathematics education in Brazil, in special, concerning teaching of geometry in Bahia, during the Movement of Modern Mathematics MMM. We investigated this research, which proposal of teaching of geometry was contained on books dedicated to elementary school in the project: "Process between exhibition and discovery" PROED. Those books, produced in Salvador in 70's decade, which one of the author the mathe...

  20. Screening for Structural Hemoglobin Variants in Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Wellington Santos Silva

    2016-02-01

    Full Text Available Brazil was the country that received the largest number of Africans during the time of colonization, and Bahia was the Brazilian state that received the largest number of slaves from Africa. The purpose of this study was to evaluate the coverage of the newborn screening program for sickle cell disease in the Recôncavo Baiano region of the state of Bahia, and to show the frequency of the subjects with hemoglobin variants in the 2006–2009 period. Blood samples from neonates in twelve cities in the Recôncavo Baiano region were analyzed by High Performance Liquid Chromatography. A total of 16,402 children were born in this period, 14,773 of which underwent newborn screening. In this period 1416 children were born carrying hemoglobin variants HbS and HbC. Forty-seven patients—20 HbSS genotype and 27 HbSC genotype—were diagnosed in eleven of the twelve cities surveyed. The proportion of children born with sickle cell disease in the Recôncavo Baiano region was 1/314, which was higher than the 1/650 rate for the state of Bahia. The data presented in this study confirm the high frequency of sickle cell disease in Recôncavo Baiano, demonstrating the need to create a referral center for the care of patients with sickle cell diseases in the region.

  1. MARTHA DANTAS: o ensino da geometria na Bahia

    Directory of Open Access Journals (Sweden)

    Maria Célia Leme da Silva

    2008-01-01

    Full Text Available This article is part of project of research which intends to build up Historical facts of mathematics education in Brazil, in special, concerning teaching of geometry in Bahia, during the Movement of Modern Mathematics MMM. We investigated this research, which proposal of teaching of geometry was contained on books dedicated to elementary school in the project: "Process between exhibition and discovery" PROED. Those books, produced in Salvador in 70's decade, which one of the author the mathematics and educator from Bahia, Martha Maria de Souza Dantas. The project of research searchs to understand how was the introduction of modern geometry in Bahia , for this reason we prepared a preliminary description and analysis of original documents of two projects developed in Salvador during 60's and 70's decades between them the project which originated the didactic books , part of our investigation. On this article, we showed an academic analogy of Martha Dantas, because during our preliminary reading concerning documents from Salvador, we realized that those books were strongly harnessed to academic life of this educator.

  2. Geologic studies in the Sierra de Pena Blanca, Chihuahua, Mexico

    Science.gov (United States)

    Reyes-Cortes, Ignacio Alfonso

    The Sierra del Cuervo has been endowed with uranium mineralization, which has attracted many geological studies, and recently the author was part of a team with the goal of selecting a site of a radioactive waste repository. The first part of the work adds to the regional framework of stratigraphy and tectonics of the area. It includes the idea of a pull apart basin development, which justifies the local great thickness of the Cuervo Formation. It includes the regional structural frame work and the composite stratigraphic column of the Chihuahua Trough and the equivalent Cretaceous Mexican Sea. The general geologic features of the NE part of the Sierra del Cuervo are described, which include the folded ignimbrites and limestones in that area; the irregular large thicknesses of the Cuervo Formation; and the western vergence of the main folding within the area. Sanidine phenocrystals gave ages of 54.2 Ma and 51.8 Ma ± 2.3 Ma. This is the first time these dates have been reported in print. This age indicates a time before the folded structures which outcrop in the area, and 44 Ma is a date after the Cuervo Formation was folded. The Hidalgoan orogeny cycle affected the rocks between this lapse of time. Since then the area has been partially affected by three tensional overlapped stages, which resulted in the actual Basin and Range physiography. The jarosite related to the tectonic activity mineralization has been dated by the Ar-Ar method and yields an age of 9.8 Ma. This is the first report of a date of mineralization timing at Pena Blanca Uranium District in the Sierra del Cuervo. These are some of the frame work features that justify the allocation of a radioactive waste repository in the Sierra del Cuervo. An alluvial fan system within the Boquilla Colorada microbasin was selected as the best target for more detailed site assessment. The study also included the measurement of the alluvium thicknesses by geoelectric soundings; studies of petrography and weathered

  3. Estimating the Economic Impact of an Eventual Introduction of Huanglongbing (HLB) in the State of Bahia, Brazil

    OpenAIRE

    Oliveira, J. M.C.; Silva, S. X.B.; Nascimento, A. S.; Miranda, S. H.G.; Barbosa, C. J.; Laranjeira, F. F.

    2014-01-01

    Bahia is the second most important citrus region in Brazil, accounting for 5.5% of Brazilian production. 80% of this production comes from family based farms, which depend on this crop for economic support. Huanglongbing (HLB) was never recorded in Bahia, but is already spreading in three other citrus-producing states of the country, one of which borders the state of Bahia. Thus, this study aimed to estimate the potential economic impact resulting from an eventual introduction of HLB in Bahia...

  4. FLORA OF MOLOCHNYI ESTUARY COASTS

    Directory of Open Access Journals (Sweden)

    Kolomiychuk V.P.

    2013-09-01

    Full Text Available Present-day characteristic of the coastal flora of Molochnyi eastury is given, that is one of the largest estuaries in Ukraine, the shores and waters of which in 2009 became a part of the Pryazov’ya National Nature Park. The analysis of the main parameters of the flora is made. Rare component of the estuary coastal flora is characterized, further steps to conserve the nature of Pryazov’ya are proposed.

  5. Dissolved and particulate metals dynamics in a human impacted estuary from the SW Atlantic

    Science.gov (United States)

    La Colla, Noelia S.; Negrin, Vanesa L.; Marcovecchio, Jorge E.; Botté, Sandra E.

    2015-12-01

    In order to evaluate metal behavior in urban stressed estuaries, the distribution of major elements (Fe and Mn) and trace elements (Cd and Cu) between suspended particulate matter (SPM) and subsuperficial seawater in the Bahía Blanca Estuary, Argentina, was studied. Four different impacted areas were selected to study the spatial and temporal distribution of these metals in an estuary in continuous industrial development and where an environmental law was implemented to supervise industrial discharges in waters. Sampling was performed within intertidal areas. Physicochemical conditions usually influence the partitioning of metals between the dissolved and particulate fraction thus, salinity, pH, turbidity, temperature and dissolved oxygen were also measured. Dissolved metals were analyzed with atomic absorption spectrophotometry (AAS) and the particulate fraction with inductively coupled plasma optical emission spectrometry (ICP OES). Metals concentration ranges, within the dissolved fraction (μg/L), were from below the method detection limit for all the elements to 4.7 in the case of Cd, 6.0 for Cu and 62 for Fe. Minimum and maximum values in the particulate fraction (μg/g, d.w.) were from below the method detection limit to 11 for Cd; from 24 to 220 for Cu and from 630 to 1500 for Mn. For Fe, concentrations ranged from 2.2 to 9.6 (%). The general order of the dissolved/particulate partition coefficients (Log10Kds) for the studied metals, considering mean values, were: Fe (7.0) > Cu (4.2) > Cd (3.3). The metals values as well as the physicochemical parameters showed temporal variations and many correlations were found among them. Log10Kd Fe values were the highest, highlighting its strong affinity for particles. Metals concentrations were sometimes higher than those from other polluted areas as well as from previous studies from the same estuary, which highlights the potential impact of these elements in the study area. The concentrations of particulate metals

  6. REGIONAL HYDROLOGY OF THE NOPAL I SITE, SIERRA DE PENA BLANCA, CHIHUAHUA, MEXICO

    Energy Technology Data Exchange (ETDEWEB)

    J.A. Rodriguez-Pineda; P. Goodell; P.F. Dobson; J. Walton; R. Oliver; De La Garza; S. Harder

    2005-07-11

    The U.S. Department of Energy sponsored the drilling of three wells in 2003 near the Nopal I uranium deposit at the Sierra Pena Blanca, Chihuahua, Mexico. Piezometric information is being collected to understand groundwater flow at local and regional levels as part of an ongoing natural analogue study of radionuclide migration. Water level monitoring reported at these and other wells in the region is combined with archival data to provide a better understanding of the hydrology at Nopal I. Initial results suggest that the local hydrology is dependent on the regional hydrologic setting and that this groundwater system behaves as an unconfined aquifer. The region is dominated by an alternating sequence of highlands and basins that step down from west to east. The Sierra de Pena Blanca was downdropped from the cratonic block to the west during Cenozoic extension. The Nopal I area is near the intersection of two large listric faults, and the questa of ash flow tuffs that hosts the deposit has been subjected to complex structural events. The Pena Blanca Uranium District was originally characterized by 105 airborne radiometric anomalies, indicating widespread uranium mineralization. The Nopal I uranium deposit is located in the Sierra del Pena Blanca between the Encinillas Basin to the west, with a mean elevation of 1560 m, and the El Cuervo Basin to the east, with a mean elevation of 1230 m. The Nopal I + 10 level is at an intermediate elevation of 1463 m, with a corresponding groundwater elevation of approximately 1240 m. The regional potentiometric surface indicates flow from west to east, with the El Cuervo Basin being the discharge zone for the regional flow system. However, it appears that the local groundwater potential beneath the Nopal I site is more in accordance with the water table of the El Cuervo Basin than with that of the Encinillas Basin. This might indicate that there is limited groundwater flow between the Encinillas Basin and the Nopal I area.

  7. REGIONAL HYDROLOGY OF THE NOPAL I SITE, SIERRA DE PENA BLANCA, CHIHUAHUA, MEXICO

    International Nuclear Information System (INIS)

    The U.S. Department of Energy sponsored the drilling of three wells in 2003 near the Nopal I uranium deposit at the Sierra Pena Blanca, Chihuahua, Mexico. Piezometric information is being collected to understand groundwater flow at local and regional levels as part of an ongoing natural analogue study of radionuclide migration. Water level monitoring reported at these and other wells in the region is combined with archival data to provide a better understanding of the hydrology at Nopal I. Initial results suggest that the local hydrology is dependent on the regional hydrologic setting and that this groundwater system behaves as an unconfined aquifer. The region is dominated by an alternating sequence of highlands and basins that step down from west to east. The Sierra de Pena Blanca was downdropped from the cratonic block to the west during Cenozoic extension. The Nopal I area is near the intersection of two large listric faults, and the questa of ash flow tuffs that hosts the deposit has been subjected to complex structural events. The Pena Blanca Uranium District was originally characterized by 105 airborne radiometric anomalies, indicating widespread uranium mineralization. The Nopal I uranium deposit is located in the Sierra del Pena Blanca between the Encinillas Basin to the west, with a mean elevation of 1560 m, and the El Cuervo Basin to the east, with a mean elevation of 1230 m. The Nopal I + 10 level is at an intermediate elevation of 1463 m, with a corresponding groundwater elevation of approximately 1240 m. The regional potentiometric surface indicates flow from west to east, with the El Cuervo Basin being the discharge zone for the regional flow system. However, it appears that the local groundwater potential beneath the Nopal I site is more in accordance with the water table of the El Cuervo Basin than with that of the Encinillas Basin. This might indicate that there is limited groundwater flow between the Encinillas Basin and the Nopal I area

  8. Improved cryopreservation protocol for Blanca-Celtibérica buck semen collected by electroejaculation

    OpenAIRE

    Jiménez Rabadán, Pilar; Ramón, Manuel; García Alvarez, Olga; Maroto Morales, Alejandro; Alvaro García, Pablo J.; Olmo, Enrique del; Pérez Guzmán, María Dolores; Fernández Santos, María del Rocío; Garde López-Brea, José Julián; Soler, Ana Josefa

    2013-01-01

    The collection of sperm samples by electroejaculation (EE) leads to an increase of the production of seminal plasma which could modify the tolerance of spermatozoa to the cryopreservation procedure. This study aims to compare a standard sperm cryopreservation protocol for samples collected by artificial vagina (AV) with the same protocol and modifications to this for samples obtained by EE. Semen from six males of Blanca-Celtibérica goat breed was collected by AV (control) and EE, and three e...

  9. Glacial lake outburst flood in the Chuchún watershed, Cordillera Blanca, Peru

    Czech Academy of Sciences Publication Activity Database

    Klimeš, Jan; Vilímek, V.; Benešová, M.; Bouška, P.; Cochachin, A.

    Vol. 6. Berlin: Springer, 2013 - (Margottini, C.; Canuti, P.; Sassa, K.), s. 107-111 ISBN 978-3-642-31318-9. [World Landslide Forum /2./ - Putting science into practice. Roma (IT), 03.10.2011-09.10.2011] R&D Projects: GA ČR(CZ) GAP209/11/1000 Institutional research plan: CEZ:AV0Z30460519 Keywords : glacial lakes * flood modelling * Cordillera Blanca Subject RIV: DE - Earth Magnetism, Geodesy, Geography

  10. Everyday perceptual system of teenagers from bahía blanca city, argentina

    OpenAIRE

    Rubio Farinelli, María Laura; Santarelli de Serer, Silvia Alicia

    2010-01-01

    This paper intends to offer a useful methodology to plan urban spaces. The purpose of this article is to understand the locally-referenced perceptual system of the teenagers of Bahía Blanca by identifying their socio-spatial practices, as well as the networks they establish with their families, friends and daily spaces. This, as means to define and categorize the places of higher common concurrence, as well as those which, because of their emotional significance become collectively referenced...

  11. Lichenometry in the Cordillera Blanca, Peru : "Little Ice Age" moraine chronology

    OpenAIRE

    O. Solomina; Jomelli, Vincent; Kaser, G.; Ames, A; Berger, B; Pouyaud, Bernard (dir.)

    2007-01-01

    This paper is a comparison and compilation of lichenometric and geomorphic studies performed by two independent teams in the Cordillera Blanca, Peru, in 1996 and 2002 on 66 "Little Ice Age" moraines of 14 glaciers. Using eleven new control points, we recalibrated the initial rapid growth phase of the previously established Rhizocarpon subgenus Rhizocarpon growth curve. This curve was then used to estimate the age of "Little Ice Age" moraines. The time of deposition of the most prominent and n...

  12. Wind Transport of Radionuclide- Bearing Dust, Peña Blanca, Chihuahua, Mexico

    Science.gov (United States)

    Velarde, R.; Goodell, P. C.; Gill, T. E.; Arimoto, R.

    2007-05-01

    This investigation evaluates radionuclide fractionation during wind erosion of high-grade uranium ore storage piles at Peña Blanca (50km north of Chihuahua City), Chihuahua, Mexico. The aridity of the local environment promotes dust resuspension by high winds. Although active operations ceased in 1983, the Peña Blanca mining district is one of Mexico`s most important uranium ore reserves. The study site contains piles of high grade ore, left loose on the surface, and separated by the specific deposits from which they were derived (Margaritas, Nopal I, and Puerto I). Similar locations do not exist in the United States, since uranium mining sites in the USA have been reclaimed. The Peña Blanca site serves as an analog for the Yucca Mountain project. Dust deposition is collected at Peña Blanca with BSNE sediment catchers (Fryrear, 1986) and marble dust traps (Reheis, 1999). These devices capture windblown sediment; subsequently, the sample data will help quantify potentially radioactive short term field sediment loss from the repository surface and determine sediment flux. Aerosols and surface materials will be analyzed and radioactivity levels established utilizing techniques such as gamma spectroscopy. As a result, we will be able to estimate how much radionuclide contaminated dust is being transported or attached geochemically to fine grain soils or minerals (e.g., clays or iron oxides). The high-grade uranium-bearing material is at secular equilibrium, thus the entire decay series is present. Of resulting interest is not only the aeolian transport of uranium, but also of the other daughter products. These studies will improve our understanding of geochemical cycling of radionuclides with respect to sources, transport, and deposition. The results may also have important implications for the geosciences and homeland security, and potential applications to public health. Funding for this project is provided in part via a NSF grant to Arimoto.

  13. Predictive optimal control of sewer networks using CORAL tool: application to Riera Blanca catchment in Barcelona.

    Science.gov (United States)

    Puig, V; Cembrano, G; Romera, J; Quevedo, J; Aznar, B; Ramón, G; Cabot, J

    2009-01-01

    This paper deals with the global control of the Riera Blanca catchment in the Barcelona sewer network using a predictive optimal control approach. This catchment has been modelled using a conceptual modelling approach based on decomposing the catchments in subcatchments and representing them as virtual tanks. This conceptual modelling approach allows real-time model calibration and control of the sewer network. The global control problem of the Riera Blanca catchment is solved using a optimal/predictive control algorithm. To implement the predictive optimal control of the Riera Blanca catchment, a software tool named CORAL is used. The on-line control is simulated by interfacing CORAL with a high fidelity simulator of sewer networks (MOUSE). CORAL interchanges readings from the limnimeters and gate commands with MOUSE as if it was connected with the real SCADA system. Finally, the global control results obtained using the predictive optimal control are presented and compared against the results obtained using current local control system. The results obtained using the global control are very satisfactory compared to those obtained using the local control. PMID:19700825

  14. KNOW YOUR ESTUARY: THE WATER THROUGH TIME

    Science.gov (United States)

    This presentation will focus on historical changes in water quality in the Yaquina Estuary, Oregon, and factors which influence water quality within this estuary. Topics presented will include the importance of ocean conditions on water quality in the estuary; historical changes...

  15. Clinical tomographic correlations of 220 patients with neurocisticercosis, Bahia, Brazil.

    Science.gov (United States)

    Andrade-Filho, Antônio de Souza; Figuerôa, Luiz Frederico da Silva; Andrade-Souza, Victor Mascarenhas

    2007-02-01

    Neurocysticercosis (NCC) is a common parasitic disease in our region, presenting diversity of neurological symptoms and signs. The present study has as primary objective an evaluation of the NCC's clinical and epidemiological profile within Bahia State, by means of a prospective study of 220 patients diagnosed from March 1988 to March 1999, with a follow-up of six months. Exams, such as Computed Cranial Tomography Scan (CT), Cerebral Spine Fluid (CSF) and Electroencephalogram (EEG), were accomplished in three distinct moments of these patients' evolution: at starting or diagnostic point (zero time), at after-intervention period (one month after treatment), and at control period (six months after treatment). PMID:17625739

  16. Clinical tomographic correlations of 220 patients with neurocisticercosis, Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Antônio de Souza Andrade-Filho

    2007-02-01

    Full Text Available Neurocysticercosis (NCC is a common parasitic disease in our region, presenting diversity of neurological symptoms and signs. The present study has as primary objective an evaluation of the NCC's clinical and epidemiological profile within Bahia State, by means of a prospective study of 220 patients diagnosed from March 1988 to March 1999, with a follow-up of six months. Exams, such as Computed Cranial Tomography Scan (CT, Cerebral Spine Fluid (CSF and Electroencephalogram (EEG, were accomplished in three distinct moments of these patients' evolution: at starting or diagnostic point (zero time, at after-intervention period (one month after treatment, and at control period (six months after treatment.

  17. Biogeochemical budgets for Tapi Estuary

    Digital Repository Service at National Institute of Oceanography (India)

    Bapardekar, M.V.; DeSousa, S.N.; Zingde, M.D.

    , is rural with no sewage facilities. The urban population is spread over 37 cities (7 class I cities with population >100,000; 7 class II cities with population between 50,000 and 100,000; and 23 class III cities with population ranging between 20..., chemical and metallurgical. All these industries release their effluents in the adjacent estuary. A considerable amount of sewage generated in and around the Surat city is released to the inner segment of the estuary. The average annual ground water...

  18. Documenting Architectural Heritage in Bahia, Brazil, Using Spherical Photogrammetry

    Science.gov (United States)

    De Amorim, A. L.; Fangi, G.; Malinverni, E. S.

    2013-07-01

    The Cultural Heritage disappears at a rate higher than we are able, not only, to restore but also to document: human and natural factors, negligence or worst, deliberate demolitions put in danger the collective Architectural Heritage (AH). According to CIPA statements, the recording is important and has to follow some guidelines. The Architectural and Urban Heritage data have to be historically related, critically assessed and analyzed, before to be organized according to a thematic structure and become available for further uses. This paper shows the experiences developed by the Laboratory of Computer Graphics applied to Architecture and Design (LCAD), at the Architecture School of the Federal University of Bahia (FAUFBA), Brazil, in cooperation with the Università Politecnica delle Marche (UNIVPM, DICEA Department), Italy, in documenting architectural heritage. The research set up now has been carried out in the historical sites of Bahia, as Pelourinho neighborhood, a World Heritage by UNESCO. Other historical sites are in the plan of this survey, like the cities of Lençóis and Mucugê in Chapada Diamantina region. The aim is to build a technological platform based on low cost digital technologies and open source tools, such as Panoramic Spherical Photogrammetry, Spatial Database, Geographic Information Systems, Three-dimensional Geometric Modeling, CAD technology, for the collection, validation and dissemination of AH.

  19. Energy balance from Bahia state 2013 - series 1996-2012

    International Nuclear Information System (INIS)

    This Energy Balance from Bahia, Brazil, presents six chapters, as follows: the chapter 1 approaches the profile of the energy system, showing the structure of the Bahia state energy matrix in the year of 2012, and the modifications occurred during the period of 1996-2012. Then the consolidated information are presented, from production to final consumption, for the set of primary and secondary sources, as well as comparative tables of states x national production of major energy production; the chapter 2 analyses the development, during the period of 1996-2012, in energy supply according to the Primary and Secondary sources; the chapter 3 comprised the evolution of energy consumption by sources and according the social-economic sectors; chapter 4 focus, within a broader view, the evolution of self-sufficiency energy state, confronting the production of primary energy to the total energy demand; in chapter 5 is given the status of the Energy Transformation Centers of the state, highlighting the balances of the Refinery Landulpho Alves (RLAM) and the Power Plants of Public Service and Self-Producer and the chapter 6 contains the consolidated matrixes expressed in the years of 1980, 1985 and 1990-2012

  20. Health assessment of the oyster Crassostrea rhizophorae on the southern coast of Bahia, northeastern Brazil Avaliação da saúde da ostra Crassostrea rhizophorae no Litoral Sul da Bahia, nordeste do Brasil

    Directory of Open Access Journals (Sweden)

    Rosana Pinho Brandão

    Full Text Available This study investigated the health of natural stocks of the oyster Crassostrea rhizophorae on the southern coast of Bahia in northeastern Brazil, during summer and winter 2010, at three localities (sampling points in the estuaries of the Maraú (Camamu Bay and Graciosa rivers. A total of 180 oysters (30/sampling point/season were examined macroscopically for the presence of pathogens and anatomical changes. The specimens were subsequently fixed in Davidson solution, processed for paraffin embedding, sectioned and stained with Harris' hematoxylin and eosin. Histological analysis revealed the presence of Rickettsia-like organisms (RLOs, Ancistrocoma, Trichodina, Sphenophrya, Nematopsis, Urastoma, Bucephalus in the sporocyst phase, a nonspecific metacercaria, and a metacestode of genus Tylocephalum. The prevalence of infection was low except for parasitism by Nematopsis sp. which also caused histopathological changes. The presence of Bucephalus sp. caused parasitic castration. These two pathogens significantly affect the health of C. rhizophorae.Este estudo investigou a saúde de ostras da espécie Crassostrea rhizophorae de estoques naturais do Litoral Sul do Estado da Bahia, Nordeste do Brasil, durante o verão e o inverno de 2010, em três pontos amostrais distribuídos nos estuários dos rios Maraú (Baía de Camamu e Graciosa. Um total de 180 ostras (30/ponto amostral/período foram examinadas macroscopicamente para a presença de patógenos e alterações anatômicas e posteriormente fixadas em solução de Davidson, processadas para inclusão em parafina, seccionadas e coradas com hematoxilina de Harris e eosina. A análise histológica evidenciou a presença de organismos com características similares a Rickettsia (RLOs, Ancistrocoma, Trichodina, Sphenophrya, Nematopsis, Urastoma, Bucephalus em fase esporocística, metacercária inespecífica e metacestóide de Tylocephalum. As prevalências de infecção foram baixas, com exceção do

  1. Seasonal prevalence of white plague like disease on the endemic Brazilian reef coral Mussismilia braziliensis Prevalencia estacional de la enfermedad de la plaga blanca en el coral endémico de Brasil Mussismilia braziliensis

    Directory of Open Access Journals (Sweden)

    Ronaldo Francini-Filho

    2010-01-01

    Full Text Available The reef coral Mussismilia braziliensis Verril, 1968 is endemic to the eastern Brazilian coast, representing a major reef-building species in the region. This coral is threatened by extinction due to the recent proliferation of a white-plague like (WPL disease. Despite its severe impacts, the environmental factors leading to outbreaks of WPL disease are still poorly understood. This study describes the seasonal prevalence of WPL disease on M. braziliensis in the Abrolhos Bank, on the southern coast of Bahia Brazil. In situ estimates showed that WPL disease was about 4.5 times more prevalent in summer (January 2007, mean sea surface temperature 27.4°C than in winter (July 2007, 25.0°C. This result suggests that the prevalence of WPL disease in M. braziliensis is temperature-dependent, supporting the hypothesis that warmer oceans are facilitating the proliferation of coral diseases worldwide.El coral Mussismilia braziliensis Verril, 1968 es endémico de la costa este de Brasil y representa una de las principales especies constructoras de arrecifes coralinos en dicha region. Este coral se encuentra bajo la amenaza de extincion debido la reciente propagacion de la enfermedad llamada la plaga blanca (PB. Pese los fuertes impactos, los factores ambientales responsables por epidemias de la PB aún son poco conocidos. En este estudio se describe la prevalencia estacional de la PB en M. braziliensis en el Banco de Abrolhos, ubicado en la costa sur de Bahia, Brasil. Estimaciones in situ comprueban que la prevalencia de esta molestia ha sido cerca de 4,5 veces mayor en verano (enero de 2007, temperatura media del agua superficial del mar 27,4°C, que en invierno (julio de 2007; 25,0°C. Este resultado sugiere que la prevalencia de la enfermedad PB en M. braziliensis es dependiente de la temperatura, reforzando la hipótesis de que los océanos mas cálidos estén facilitando la propagacion de enfermedades coralígenas en todo el mundo.

  2. Casa, cuerpo. La poesía de Blanca Varela frente al espejo Casa, cuerpo. La poesía de Blanca Varela frente al espejo

    Directory of Open Access Journals (Sweden)

    Eduardo Lino Salvador

    2012-05-01

    Full Text Available La bibliografía crítica existente sobre Blanca Varela se ve enriquecida con un nuevo libro de Camilo Fernández Cozman que recibe por título  Casa, cuerpo. La poesía de Blanca Varela frente al espejo. Este libro, divido en cuatro capítulos, representa, sin duda, un serio acercamiento a diversos tópicos de la poesía vareliana. En este texto, el Miembro de Número de la Academia Peruana de la Lengua, fiel a su rigor interdisciplinario cuya base radica en la retórica general textual, inicia su investigación con un exhaustivo balance de la recepción crítica sobre la lírica de la poeta peruana. En el capítulo que inicia el libro, examina los artículos y ensayos más representativos destacando las ideas de Octavio Paz, las sugerentes reflexiones de José Miguel Oviedo, los disímiles puntos de vista existentes entre Roberto Paoli y David Sobrevilla que buscaban comprender la propuesta del verso de la poeta de  Ese puerto existe. El crítico destaca, también, los importantes aportes de Rocío Silva-Santisteban y Bethsabé Huamán que, desde la perspectiva de los estudios de género, abren el camino para nuevas claves de lectura. Asimismo, examina la mirada que la historiografía literaria tiene sobre la poeta; así como también los criterios a partir de los cuales se posibilitó su presencia en distintas antologías.

  3. Identificación del agente causal de la pudrición blanca en morelos, méxico

    OpenAIRE

    2013-01-01

    Título en ingles: Identification of the white rot agent in Morelos, Mexico Título corto: Agente causal de la pudrición blanca en Morelos, México Resumen: Cepas aisladas de Trametes versicolor (L.:Fr.) Pilát causando pudrición blanca en especies arbóreas de amate amarillo (Ficus petiolaris), cirián o cuatecomate (Crescentia alata), guayaba (Psidium guajava) y sauce colorado (Salix humboltiana) en los municipios de Ayala, Cuautla, Cuernavaca, Jojutla, Tepalcingo, Tlaltizapán, Tlaquiltenango y Z...

  4. Origen y evolucion de la manufactura en el interior. El caso de Bahía Blanca

    OpenAIRE

    Viego Valentina

    2005-01-01

    Bahía Blanca has been posed as the main Southern city of the country (both in population and economic terms) by various works in the field of economic geography. In particular, it has been emphasized its leading manufacturing sector (historically oriented to exports) and its role as center of supply for most Patagonian towns. This economic function has been spreaded by the slogan “Bahía Blanca, port and door of Argentinian South”, targeted to unify heterogeneous visions about the city role in...

  5. POLÍTICA Y COTIDIANEIDAD: MEMORIAS DEL PASADO RECIENTE EN BAHÍA BLANCA (ARGENTINA)

    OpenAIRE

    Gabriela González

    2015-01-01

    In this article we deal with some of the approximations undertaken as part of the research studies developed within the framework of our doctoral training. Said studies attempt to delve into the reconstruction of memories of the militancy of the Juventud Peronista in the city of Bahía Blanca between 1966 and 1976, taking into account the strong presence of the Armed Forces in said city. In this reconstruction, the native conceptions about politics and the political constitute one of the main ...

  6. Biodegradación de DDT por dos cepas nativas de hongos de la podredumbre blanca

    OpenAIRE

    Osmel Domínguez; Miguel Ramos- Leal; Ana Margarita Manzano; María Isabel Sánchez; Ayixon Sánchez; Giselle Torres; Juan Arguelles; Armando Romeu; Jorge Palacios; Gonzalo Dierksmeier; Gilda Guerra

    2010-01-01

    La biodegradación de DDT por hongos ha recibido relativamente muy poco interés. Investigaciones actuales han confirmado que un gran número de hongos pueden degradar el DDT. Los Hongos de la Podredumbre Blanca (HPB) son un grupo de basidiomicetos degradadores de la lignina que han recibido una considerable atención por su potencial en la biorremediación. Ellos son capaces de degradar la lignina y otras moléculas recalcitrantes debido a que poseen un sistema multienzimático extracelular inespe...

  7. Bahía Blanca en el siglo XXI, de la euforia a la angustia

    OpenAIRE

    Ribas, Diana Itatí

    2005-01-01

    ¿Cómo ha sido imaginada Bahía Blanca en el siglo XXI? Este trabajo pone en relación una proyección ucrónica de Guillermo David recientemente publicada con el viaje imaginario de Nilo María Fabra que, en el siglo XIX, imagina a la ciudad en el 2003 y, por otro lado, con las que, desde lo visual, fueron fantaseadas por distintos dibujantes en ese último año. Si bien se trata de poner en contacto dos formas de representación - la discursiva y la visual - que son irreductibles una a la otra, pres...

  8. Proyecto de ampliación del Puerto de Playa Blanca en la Isla de Lanzarote

    OpenAIRE

    Morales Santana, Zenaida

    2012-01-01

    El objeto de este proyecto es la definición de las obras a realizar para llevar a cabo la ampliación del Puerto de Playa Blanca. Por otro lado, la ampliación tiene por objetivo los siguientes aspectos: - Mejorar su funcionalidad mediante una ampliación y mejora de las actuales instalaciones portuarias. - Apertura de nuevas perspectivas a otros tráficos y actividades (cruceros turísticos, náutica turístico-deportiva). - Establecer una separación física de los ámbitos de op...

  9. El expendio de hierbas medicinales en el partido de Bahía Blanca, Argentina

    OpenAIRE

    Cambi, Viviana; Hermann, Paula

    2001-01-01

    Se ha realizado una encuesta sobre el expendio de plantas medicinales en el partido de Bahía Blanca. En la mayoría de los comercios sólo del 10 al 30% de los clientes adquieren hierbas medicinales. Son más de 70 las especies vendidas: tilo (84,2% de los casos), manzanilla (74,3%), sen (69,3%), boldo (64,4%), cuasia, malva (47%), carqueja, valeriana (30%), cedrón (26,7%), ambay, cola de caballo y fucus (20%) son las más vendidas. En una gran proporción los clientes solicitan asesoramiento. Cas...

  10. Papulosis fibrosa blanca del cuello White Fibrous Papulosis Of The Neck

    OpenAIRE

    JE Restifo; M Tula; E Maronna

    2009-01-01

    Presentamos el caso de una mujer de 55 años afectada por Papulosis Fibrosa Blanca del Cuello, que había sido diagnosticada como Pseudoxantoma Elástico. Son cuadros que pueden confundirse y es menester el diagnóstico diferencial, porque nuestra paciente de buen pronóstico tenía un diagnóstico ominoso.We report the case of a woman 55 years old affected by Fibrous Papulosis of the Neck, that was diagnosed as pseudoxanthoma elasticum. These are entities that may be confused but we emphasize the d...

  11. Sistema perceptivo cotidiano dos adolescentes da cidade de bahía blanca, argentina

    OpenAIRE

    Rubio Farinelli, María Laura; Santarelli de Serer, Silvia Alicia

    2010-01-01

    Neste artigo pretende-se oferecer uma metodologia para planificar os espaços urbanos, através do reconhecimento das imagens percebidas por diferentes atores. O objetivo é compreender o sistema perceptivo de referência local dos adolescentes de Bahía Blanca, a partir de suas práticas sócio-espaciais e dos vínculos que eles mantêm com familiares e amigos, como meios para definir e categorizar os lugares de maior participação habitual que, pelo seu significado emocional, convertem-se em geo-símb...

  12. Sistema perceptivo cotidiano de los adolescentes de la ciudad de Bahía Blanca, Argentina

    OpenAIRE

    Rubio Farinelli María Laura; Santarelli Serer Silvia Alicia

    2009-01-01

    Este artículo pretende ofrecer una metodología para planificar los espacios urbanos, a través del reconocimiento de las imágenes percibidas por diferentes actores. El objetivo es comprender el sistema perceptivo de referencia local de los adolescentes de Bahía Blanca, a partir de sus prácticas socioespaciales y de sus vínculos con familiares y amigos, como medios para definir y categorizar los lugares de mayor concurrencia habitual que, por su significado emocional, se convierten en geosímbol...

  13. Cultivo de cachama blanca en altas densidades y en dos sistemas cerrados

    OpenAIRE

    Germán Poleo; José Vicente Aranbarrio; Lismen Mendoza; Oneida Romero

    2011-01-01

    El objetivo de este trabajo fue evaluar la tolerancia de la cachama blanca, Piaractus brachypomus, a cultivos en altas densidades en sistemas cerrados. Novecientos alevines de 44,3±26 g de peso, se distribuyeron en seis tanques de concreto, con 4,8 m³ de agua. Tres tanques presentaron cero recambio de agua (SCR), y en otros tres, el agua se hizo circular a través de un bioclarificador (SRA). Ambos tratamientos presentaron fuerte aireación para mantener los sólidos en suspensión y suministrar ...

  14. Costa Blanca: Public Space And Perceived Image as Key to Tourism Competitiveness

    OpenAIRE

    Navalón García, Rosario

    2014-01-01

    Los destinos turísticos tradicionales del litoral español se enfrentan a profundas transformaciones debidas a varios factores, entre los que se encuentran cambios notables en el comportamiento de la demanda y un intenso crecimiento de la competencia a todos los niveles, que puede poner en duda la pervivencia del modelo de desarrollo de estas áreas maduras. Lejos de ser una excepción, la situación que se describe para la Costa Blanca es extrapolable a otros destinos turísticos en otras regione...

  15. Marketing Plan of Rental Apartments in Costa Blanca for Scandinavians : Case: Zariko Enterprise SL

    OpenAIRE

    Kirssi, Johanna

    2014-01-01

    This thesis is a marketing plan of rental apartments in Costa Blanca for Swedish, Norwegian and Danish customers. The ordering party is Zariko Enterprise SL, which is a real estate agency operating in Torrevieja, Spain. The company is both selling and renting properties, but this thesis is focused only on the rentals. The objective of the thesis is to create a marketing plan which the company can put into practice. It will support the case company in finding more customers from the target cou...

  16. Fertilidad y prolificidad en cerdas Pelón Mexicano y blancas mejoradas tratadas con gonadotropinas

    OpenAIRE

    Santos Aguilar Torres; Eunice E. Ramírez Acosta; Danilo Méndez Medina; Rafael Olea Pérez; VJM Berruecos; Jorge Lopez; Alejandro Córdova Izquierdo

    2005-01-01

    Para la determinación de la fertilidad y prolificidad se utilizó un grupo de cerdas Pelón Mexicano (CPM) y un grupo de cerdas blancas mejoradas (CBM) estas fueron tratadas con gonadotropinas para valorar el efecto sobre la fertilidad y prolificidad. Se registro: tamaño de camada (TC), peso de la camada (PC), peso individual de los lechones (PIL), lechones nacidos totales vivos (LNTV), lechones nacidos muertos (LNM), lechones nacidos momificados (LNMm) y sexo. Las cerdas fueron inseminadas art...

  17. [Reproductive cycle of the mangrove oyster Crassostrea rhizophorae (Bivalvia: Ostreidae) in Camamu Bay, Bahia, Brasil].

    Science.gov (United States)

    Lenz, Tiago; Boehs, Guisla

    2011-03-01

    The mangrove oyster Crassostrea rhizophorae is important fishery resource along the entire Brasilian coast with excellent potential for marine culture. The purpose of this paper was to examine the reproductive characteristics of the oyster of the Maraú river estuary in Camamu Bay, Bahia, Brasil. The samples were collected monthly, from September 2006 to August 2007, at two points (I and II) in Camamu Bay. At each site 20 oysters were collected for histological analysis, fixed in Davidson's solution, embedded in paraffin, dehydrated in an ethanol series, sectioned (7 microm thick) and stained with Harris hematoxylin and Eosin (HE). Additionally, 30 oysters were sampled, at each point, for a condition index analysis. The water temperature ranged from 23.5 degrees C to 30 degrees C and the salinity from 15 to 25 ups at Point I (Maraú) and from 25 to 35 at Point II (Tanque Island). The oyster's height ranged from 30 to 92 mm at Point I and from 27 to 102 mm at Point II, with an average of 49.0 mm +/- 9.1 (n = 230) and 49.9 mm +/- 9.9 (n = 237), respectively. Among the sampled oysters at Point I, 59.1% were females, 31.3% males, 1.3% hermaphrodites and 8.2% of the oysters of undetermined sex. At Point II, 66.2% were females, 30.4% males, 0.8% hermaphrodites and 2.5% (n = 237) of undetermined sex. The gonadic stage analysis indicated that the reproduction period of the C. rhizophorae in the Maraú Peninsula was continuous all year, without any regressive phase. The condition index (R) ranged from 8.0% to 17.7%. The peak periods of R coincided with the expressive oyster's percentage in the maturation and liberation gametic stages. The results of these findings will contribute information for the oyster spat collection and to the process installation of the oyster culture in Camamu Bay. PMID:21516642

  18. Estuary-wide genetic stock distribution - Columbia River Estuary Tidal Habitats

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The goal of the tidal-fluvial estuary study is to determine the estuary's contribution to the spatial structure and life history diversity of Columbia River salmon...

  19. In-stream PIT detection, estuary wetlands - Columbia River Estuary Tidal Habitats

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The goal of the tidal-fluvial estuary study is to determine the estuary's contribution to the spatial structure and life history diversity of Columbia River salmon...

  20. Salmon habitat use, tidal-fluvial estuary - Columbia River Estuary Tidal Habitats

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The goal of the tidal-fluvial estuary study is to determine the estuary's contribution to the spatial structure and life history diversity of Columbia River salmon...

  1. Tidal effects on short-term mesozooplankton distribution in small channels of a temperate-turbid estuary, Southwestern Atlantic

    Directory of Open Access Journals (Sweden)

    Javier Chazarreta

    2015-06-01

    Full Text Available Abstract The short-term variability of mesozooplankton distribution and physicochemical variables was examined in two different channels of the Bahía Blanca Estuary, Argentina, during two tidal cycles. All the physicochemical measurements and mesozooplankton sampling were performed at a fixed site during approximately 22-23 h at 3-h intervals. Pumps were used to obtain surface and bottom mesozooplankton samples and the water speed of each stratum was measured with an Acoustic Doppler Current Profiler (ADCP. In all, 23 mesozooplanktonic taxa belonging to four phyla (Arthropoda, Annelida, Echinodermata and Chordata were identified. The most abundant taxa during the two tidal cycles were Balanus glandula larvae, Eurytemora americana and Acartia tonsa. A discernible variability in the water conditions and vertical mesozooplankton distribution (VMD different from that known for the estuary's main channel, was found in the other two selected channels. VMD varied during the tidal cycle in both channels in accordance with the channel's geomorphology and water dynamic characteristics of each of them. The variation of the abundance of the different taxa during ebb and flood currents might indicate the existence of a tidal vertical migration of the mesozooplankton as a response to particular dynamic water conditions.

  2. Distribution of Cs137 in soils from Bahia state, Brazil

    International Nuclear Information System (INIS)

    A high-resolution gamma-ray spectrometry method was developed in order to study the distribution of Cs137 in topsoils of State of Bahia (Brazil). The results has shown concentrations varying between 0.6 and 6.0 nCi/m2. Correlation of the Cs137 concentration with environmental and ohysico-chemical parameters has shown a tendency for greatest accumulation in soils with regions of greatest precipitation rates: 2.0 nCi/m2, on the average, for regions with 700mm to 1,000 mm/year and 2.8 nCi/m2, on the average, in regions with 1,700 mm to 2,000 mm/year. On the other hand, an anti-correlation between this radionuclide and both calcium and clay content, for soils of similar type and under similar climatic conditions is seen. (C.D.G.)

  3. Slab flattening, dynamic topography and normal faulting in the Cordillera Blanca region (northern Peru)

    Science.gov (United States)

    Margirier, A.; Robert, X.; Laurence, A.; Gautheron, C.; Bernet, M.; Simon-Labric, T.; Hall, S. R.

    2015-12-01

    Processes driving surface uplift in the Andes are still debated and the role of subduction processes as slab flattening on surface uplift and relief building in the Andes is not well understood. Some of the highest Andean summits, the Cordillera Blanca (6768 m) and the Cordillera Negra (5187 m), are located above a present flat subduction zone (3-15°S), in northern Peru. In this area, both the geometry and timing of the flattening of the slab are well constrained (Gutscher et al., 1999; Rosenbaum et al., 2005). This region is thus a perfect target to explore the effect of slab flattening on the Andean topography and uplift. We obtained new apatite (U-Th)/He and fission-track ages from three vertical profiles located in the Cordillera Blanca and the Cordillera Negra. Time-temperature paths obtained from inverse modeling of the thermochronological data indicates a Middle Miocene cooling for both Cordillera Negra profiles. We interpret it as regional exhumation in the Cordillera Occidental starting in Middle Miocene, synchronous with the onset of the subduction of the Nazca ridge (Rosenbaum et al., 2005). We propose that the Nazca ridge subduction at 15 Ma and onset of slab flattening in northern Peru drove regional positive dynamic topography and thus enhanced exhumation in the Cordillera Occidental. This study provides new evidence of the impact subduction processes and associated dynamic topography on paleogeography and surface uplift in the Andes.

  4. Major QTLs control resistance to rice hoja blanca virus and its vector Tagosodes orizicolus.

    Science.gov (United States)

    Romero, Luz E; Lozano, Ivan; Garavito, Andrea; Carabali, Silvio J; Triana, Monica; Villareal, Natalia; Reyes, Luis; Duque, Myriam C; Martinez, César P; Calvert, Lee; Lorieux, Mathias

    2014-01-01

    Rice hoja blanca (white leaf) disease can cause severe yield losses in rice in the Americas. The disease is caused by the rice hoja blanca virus (RHBV), which is transmitted by the planthopper vector Tagosodes orizicolus. Because classical breeding schemes for this disease rely on expensive, time-consuming screenings, there is a need for alternatives such as marker-aided selection. The varieties Fedearroz 2000 and Fedearroz 50, which are resistant to RHBV and to the feeding damage caused by T. orizicolus, were crossed with the susceptible line WC366 to produce segregating F2:3 populations. The F3 families were scored for their resistance level to RHBV and T. orizicolus. The F2:3 lines of both crosses were genotyped using microsatellite markers. One major QTL on the short arm of chromosome 4 was identified for resistance to RHBV in the two populations. Two major QTL on chromosomes 5 and 7 were identified for resistance to T. orizicolus in the Fd2000 × WC366 and Fd50 × WC366 crosses, respectively. This comparative study using two distinct rice populations allowed for a better understanding of how the resistance to RHBV and its vector are controlled genetically. Simple marker-aided breeding schemes based on QTL information can be designed to improve rice germplasm to reduce losses caused by this important disease. PMID:24240781

  5. Sistema perceptivo cotidiano de los adolescentes de la ciudad de Bahía Blanca, Argentina

    Directory of Open Access Journals (Sweden)

    Rubio Farinelli María Laura

    2009-10-01

    Full Text Available Este artículo pretende ofrecer una metodología para planificar los espacios urbanos, a través del reconocimiento de las imágenes percibidas por diferentes actores. El objetivo es comprender el sistema perceptivo de referencia local de los adolescentes de Bahía Blanca, a partir de sus prácticas socioespaciales y de sus vínculos con familiares y amigos, como medios para definir y categorizar los lugares de mayor concurrencia habitual que, por su significado emocional, se convierten en geosímbolos de referencia colectiva. El método utilizado se fundamenta en datos cuali-cuantitativos para elaborar cartografía de abstracción subjetiva, que posteriormente será utilizada para orientar la intervención urbana bajo conceptos de estética y funcionalidad. Se espera contribuir al reconocimiento de los sectores que más agradan a los jóvenes en aras de la redefinición del diseño de las zonas urbanas de Bahía Blanca.

  6. Envenenamento por Tityus stigmurus (Scorpiones; Buthidae no Estado da Bahia, Brasil Envenomation by Tityus stigmurus (Scorpiones; Buthidae in Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Rejâne Maria Lira-da-Silva

    2000-06-01

    Full Text Available A presente investigação é um estudo descritivo dos aspectos clínicos dos acidentes causados pelo escorpião Tityus stigmurus no Estado da Bahia, Brasil. Foram analisados 237 casos confirmados, tratados pelo Centro de Informações Antiveneno da Bahia (CIAVE, no período de 1982-1995. O envenenamento por T. stigmurus caracterizou-se por manifestações locais: dor (94,4%, dormência (30%, edema (17,8%, eritema (17,8% e parestesia (15,6% e gerais: cefaléia (14%, vômitos (4,4% e sudorese (3,3%. A maioria dos envenenamentos (94% foi leve e todos evoluíram para cura. A ausência de letalidade, com o restabelecimento dos pacientes, inclusive casos graves, sugere a eficácia do tratamento com o antiveneno específico, apesar do veneno desta espécie não estar presente no pool de produção nacional do soro. Há necessidade de revisão dos critérios regionais nos esquemas atuais de soroterapia. Os dados apontam para a semelhança da gravidade do envenenamento por T. serrulatus, com exceção da ocorrência de óbitos e complicações sistêmicas.The present investigation is a descriptive study regarding the clinical aspects of accidents caused by the scorpion Tityus stigmurus in Bahia, Brazil. We analyzed 237 confirmed cases treated by the Antivenom Information Centre (CIAVE from 1982 to 1995. Envenomation by T. stigmurus was mainly characterized by local symptoms: pain (94.4%, dormancy (30.0%, edema (17.8%, erythema (17.8, paresthesia (15.6% and general manifestations such as headache (4.4%, vomiting (4.4% and sudoresis (3.3%. Most of the envenomation cases were mild (94% and all were successfully cured. Although T. stigmurus venom is not in the pool of anti-venom serum (SAE, the absence of lethality and benign nature of the cases suggest the efficiency of SAE. With the exception of deaths and systemic complications, envenoming gravity was similar to those of Tityus serrulatus.

  7. Morphodynamic equilibrium of alluvial estuaries

    Science.gov (United States)

    Tambroni, Nicoletta; Bolla Pittaluga, Michele; Canestrelli, Alberto; Lanzoni, Stefano; Seminara, Giovanni

    2014-05-01

    The evolution of the longitudinal bed profile of an estuary, with given plan-form configuration, subject to given tidal forcing at the mouth and prescribed values of water and sediment supply from the river is investigated numerically. Our main goal is to ascertain whether, starting from some initial condition, the bed evolution tends to reach a unique equilibrium configuration asymptotically in time. Also, we investigate the morphological response of an alluvial estuary to changes in the tidal range and hydrologic forcing (flow and sediment supply). Finally, the solution helps characterizing the transition between the fluvially dominated region and the tidally dominated region of the estuary. All these issues play an important role also in interpreting how the facies changes along the estuary, thus helping to make correct paleo-environmental and sequence-stratigraphic interpretations of sedimentary successions (Dalrymple and Choi, 2007). Results show that the model is able to describe a wide class of settings ranging from tidally dominated estuaries to fluvially dominated estuaries. In the latter case, the solution is found to compare satisfactory with the analytical asymptotic solution recently derived by Seminara et al. (2012), under the hypothesis of fairly 'small' tidal oscillations. Simulations indicate that the system always moves toward an equilibrium configuration in which the net sediment flux in a tidal cycle is constant throughout the estuary and equal to the constant sediment flux discharged from the river. For constant width, the bed equilibrium profile of the estuarine channel is characterized by two distinct regions: a steeper reach seaward, dominated by the tide, and a less steep upstream reach, dominated by the river and characterized by the undisturbed bed slope. Although the latter reach, at equilibrium, is not directly affected by the tidal wave, however starting from an initial uniform stream with the constant 'fluvial' slope, the final

  8. Influence of rapid glacial tongue treat on surface area of the Palcacocha glacial lake in the Cordillera Blanca, Peru

    Czech Academy of Sciences Publication Activity Database

    Vilímek, V.; Klimeš, Jan

    Tokyo : United Nations University, 2007, s. 9-11. [International Symposium on Landslide Risk Analysis and Sustainable Disaster Management )IPL 2007). Tokyo (JP), 21.01.2007-24.01.2007] Institutional research plan: CEZ:AV0Z30460519 Keywords : glacial retreat * Peru * Cordillera Blanca Subject RIV: DB - Geology ; Mineralogy

  9. Landslide and glacial lake outburst flood hazard in the Chucchún river basin, Cordillera Blanca, Peru

    Czech Academy of Sciences Publication Activity Database

    Klimeš, Jan; Vilímek, V.; Benešová, M.

    2015-01-01

    Roč. 50, č. 2 (2015), s. 173-180. ISSN 0300-5402 R&D Projects: GA ČR(CZ) GAP209/11/1000 Institutional support: RVO:67985891 Keywords : landslide hazard * GLOFs * flood hazard * Cordillera Blanca * Peru Subject RIV: DE - Earth Magnetism, Geodesy, Geography

  10. Grain size distribution of soils within the Cordillera Blanca, Peru: An indicator of basic mechanical properties for slope stability evaluation

    Czech Academy of Sciences Publication Activity Database

    Novotný, J.; Klimeš, Jan

    2014-01-01

    Roč. 11, č. 3 (2014), s. 563-577. ISSN 1672-6316 R&D Projects: GA ČR(CZ) GAP209/11/1000 Institutional support: RVO:67985891 Keywords : moraines * grain size distribution * shear strength * hydraulic conductivity * Cordillera Blanca Subject RIV: DE - Earth Magnetism, Geodesy, Geography Impact factor: 0.963, year: 2014

  11. The agricultural sector in Bahia State: economic outlook and energy intensity; O setor agropecuario no estado da Bahia: perspectivas economicas e intensidade energetica

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, Claudio Bezerra de [Faculdade Apoio, Lauro de Freitas, BA (Brazil); Bajay, Sergio Valdir [Universidade Estadual de Campinas (NIPE/UNICAMP), SP (Brazil). Nucleo Interdisciplinar de Planejamento Energetico

    2006-07-01

    The main characteristics of the rural economy in the State of Bahia are presented in this paper, together with the evolution of its main components in the last years and the growth perspectives for the next years. A more detailed analysis is carried out for the rural areas in the state which present higher development potential and for their respective crops . The progression of the state of Bahia' shares in the national rural economy's value added and the energy intensity changes of the main energy carriers employed in this sector are also presented in the paper. (author)

  12. Fitonematóides associados à gravioleira (Annona muricata) no sul da Bahia Phytonematodes associated to soursop tree (Aannona muricata) in the south of Bahia

    OpenAIRE

    Arlete Silveira; Francisca Feitosa Jucá; Patrícia de Araújo Melo; Célio Kersul do Sacramento

    2008-01-01

    Nematóides têm sido reportados, em alguns Estados do Brasil, causando danos à gravioleira (Annona muricata L.). No sul da Bahia, o cultivo da graviola é bastante recente; portanto, há carência de informações sobre os problemas fitossanitários. O presente estudo teve como objetivo o levantamento dos fitonematóides associados a gravioleiras dos municípios de Una e Ilhéus, sul da Bahia (BA). Subamostras de solo e raízes de 10 diferentes plantas foram coletadas, ao acaso, e misturadas para formar...

  13. Carbon dioxide emissions from Indian monsoonal estuaries

    Digital Repository Service at National Institute of Oceanography (India)

    Sarma, V.V.S.S.; Viswanadham, R.; Rao, G.D.; Prasad, V.R.; Kumar, B.S.K.; Naidu, S.A.; Kumar, N.A.; Rao, D.B.; Sridevi, T.; Krishna, M.S.; Reddy, N.P.C.; Sadhuram, Y.; Murty, T.V.R.

    be completely different from those in dry period. Recently Sarma et al. (2011) reported record levels of partial CO 2 pressures (pCO 2 ) of >30,000 μatm in the Godavari estuary during discharge period of 2008 whereas close to atmospheric saturation... was noticed during dry period. Similarly, enhanced pCO 2 levels during discharge period was also noticed in other Indian estuaries, such as Mandovi-Zuari (Sarma et al., 2001), Cochin estuary (Gupta et al., 2009), Chilka estuary (Gupta et al., 2008) whereas...

  14. Estructura de la margen norte del Río Grande, Bardas Blancas, provincia de Mendoza Structure of the northen margin of the Grande river, Bardas Blancas, Mendoza province

    Directory of Open Access Journals (Sweden)

    D.J. Dicarlo

    2007-06-01

    Full Text Available La estructura de Bardas Blancas comprende una región sobreelevada tanto topográfica como estructuralmente, conformada principalmente por estructuras braquianticlinales. Afloran en su núcleo rocas del Grupo Choiyoi y hacia los flancos depósitos sedimentarios jurásicos. El área se encuentra en un frente orogénico no emergente caracterizado por el dominio de zonas de plegamiento, fallas ciegas y el desarrollo de una zona triangular. El estudio de estas estructuras con información de subsuelo y superficie permitió el desarrollo de una sección estructural balanceada basada en el modelo de trishear. La sección se basa en el levantamiento de la estructura a partir del desarrollo de fallas de corrimiento de bajo ángulo con vergencia al este despegadas dentro del basamento. El avance de los bloques de basamento habría transmitido parte del acortamiento a la cubierta sedimentaria formándose la zona triangular de Cerro Doña Juana hacia el este. Dentro de la zona triangular se desarrolla un sistema de duplex de techo pasivo generado a partir de un nivel de despegue inferior y otro superior o retrocorrimiento. El retrocorrimiento y los Grupos Rayoso y Neuquén se encuentran volcados, producto del arrastre originado por un corrimiento de vergencia oriental. Hacia el este del retrocorrimiento las secuencias cretácicas superior y terciarias se encuentran desacopladas estructuralmente del Grupo Mendoza.The Bardas Blancas structure constitutes a topographic height characterized by an important basement anticline. The Choiyoi Group crops out in the middle of the structure and Jurassic sedimentary deposits at both limbs. This structure is the orogenic front at these latitudes and it is characterized by blind thrusts, folding and the development of a triangular zone. The Bardas Blancas structure was studied using surface and sub-surface data and a balanced cross section was constructed using the trishear model. The main structures are explained using

  15. Submarine topography and faulting in Bahia de Banderas, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Alvarez, Roman [Instituto de Investigaciones en Matematicas Aplicadas y en Sistemas, Universidad Nacional Autonoma de Mexico, Mexico D.F (Mexico)

    2007-04-15

    A digital elevation model of Bahia de Banderas and its offshore continuation to the Middle America Trench (MAT) is built from a data set of 6872 bathymetric soundings. Two new, offshore basins and several, previously unknown faults within the bay are also identified. The south flank of Banderas canyon is considerably steeper than the north one. This asymmetry and the seismic activity present lead to propose that Banderas Canyon has a half-graben structure of the fault growth type, and reverse drag geometry, which originates in an extensional basin oriented N-S. The canyon is divided in two sections that trend in different directions. The older section of the canyon, trending E-W, is probably Late Miocene; the associated Banderas Fault is suggested to extend westward, down to the MAT along a section that complements that of the half-graben. The section of Banderas Canyon trending NE and continuing into Banderas Valley is identified as a younger portion of the structure. The older and the younger portions of the canyon appear to be active presently. A group of faults also trending NE seem to be associated with the change in direction of the canyon. These results support the hypothesis that the structure of Banderas Canyon is a half-graben, and they strengthen the idea that it is the limit between the region to the north that underwent extension in the Miocene, and the region to the south that did not experienced it. [Spanish] Un modelo digital de elevacion de Bahia de Banderas y su continuacion costa afuera hasta la Trinchera Mesoamericana se construye con 6872 sondeos batimetricos. Se identifi can dos nuevas cuencas costa afuera y tambien varias fallas, hasta ahora no reportadas, dentro de la bahia. El fl anco sur del Canon de Banderas es considerablemente mas empinado que el flanco norte. Esta asimetria, junto con la actividad sismica presente, lleva a proponer que el Canon de Banderas tiene una estructura de semi-graben del tipo de crecimiento de falla, con

  16. La tematización en la Revista Blanca (1923-1936)

    OpenAIRE

    Asín Ferrer, Clara

    2014-01-01

    Recerca sobre la Revista Blanca, una publicació quinzenal filo-llibertària de divulgació sociològica, cultural i científica durant la seva segona reedició (1923-1936). L'objectiu de l'estudi és establir una classificació genèrica de la temàtica i les seves seccions fixes, així com la identificació d'actors i referents. El mètode de recerca és l'anàlisi de contingut, guiat per l'anàlisi quantitatiu, qualitatiu i l'hermenèutica. El resultat és una selecció i interpretació de continguts represen...

  17. U-Series Transport Studies at the Pena Blanca, Mexico Natural Analog Site

    International Nuclear Information System (INIS)

    Natural analogs provide a line of evidence that supports the understanding of how natural and engineered processes would occur over long time frames and large spatial scales at a potential nuclear waste repository at Yucca Mountain, Nevada. Studies of U-series disequilibria within and around uranium deposits can provide valuable information on the timing of actinide mobility and hence the stability of a potential repository over geologic time scales. The Nopal I uranium deposit at Pena Blanca, Mexico, is situated in unsaturated tuff that is similar in composition to the Topopah Spring Tuff of Yucca Mountain and closely matches other evaluation criteria for suitable natural analogs. By modeling the observed radioactive isotope disequilibria at Nopal I, we can estimate the rates of sorption-desorption and dissolution-precipitation of the radionuclides over time. Such information is vital to the testing or validation of performance assessment models for geologic nuclear waste disposal

  18. U-Series Transport Studies at the Pena Blanca, Mexico Natural Analog Site

    Energy Technology Data Exchange (ETDEWEB)

    A. M. Simmons; M. T. Murrell

    2001-05-31

    Natural analogs provide a line of evidence that supports the understanding of how natural and engineered processes would occur over long time frames and large spatial scales at a potential nuclear waste repository at Yucca Mountain, Nevada. Studies of U-series disequilibria within and around uranium deposits can provide valuable information on the timing of actinide mobility and hence the stability of a potential repository over geologic time scales. The Nopal I uranium deposit at Pena Blanca, Mexico, is situated in unsaturated tuff that is similar in composition to the Topopah Spring Tuff of Yucca Mountain and closely matches other evaluation criteria for suitable natural analogs. By modeling the observed radioactive isotope disequilibria at Nopal I, we can estimate the rates of sorption-desorption and dissolution-precipitation of the radionuclides over time. Such information is vital to the testing or validation of performance assessment models for geologic nuclear waste disposal.

  19. FENOLOGÍA DE LA ALBAHACA BLANCA (Ocimum basilicum L. CULTIVADA EN DIFERENTES FECHAS DE SIEMBRA

    Directory of Open Access Journals (Sweden)

    L. Barroso

    2002-01-01

    Full Text Available El presente trabajo se desarrolló en el Instituto Nacional de Ciencias Agrícolas (INCA, con el objetivo de estudiar la fenología de la albahaca blanca (Ocimum basilicum L. en diferentes fechas de siembra. Para ello las semillas se sembraron en enero y abril en recipientes de seis litros, con un sustrato de suelo Ferralítico Rojo compactado y materia orgánica del tipo cachaza, en una relación 3:1 v/v. Del análisis de las observaciones se obtuvo que, entre las fechas estudiadas, se alcanzan diferencias hasta de 15 días en cuanto a la duración del ciclo del cultivo.

  20. Numerical analysis of a proposed percolation experiment at the Pena Blanca natural analog site

    International Nuclear Information System (INIS)

    A field-scale percolation test is proposed for the Pena Blanca natural analog site near Chihuahua, MX. To aid in design of the field test, the V-TOUGH two-phase flow simulator was applied to model percolation of water through 8 to 10 m of partially saturated fractured tuff. The rock was characterized as a composite medium using measured hydraulic properties for the rock matrix and estimated values for the fractures. Measured matrix permeability varied over four orders of magnitude and fracture apertures were estimated to range from 10 to 1,000 μm. Water arrival times were predicted to vary between one day to 10,000 yr. The utility of the composite model and other representations of flow through fractured porous media can be tested using results from the field scale infiltration test data

  1. Papulosis fibrosa blanca del cuello White Fibrous Papulosis Of The Neck

    Directory of Open Access Journals (Sweden)

    JE Restifo

    2009-12-01

    Full Text Available Presentamos el caso de una mujer de 55 años afectada por Papulosis Fibrosa Blanca del Cuello, que había sido diagnosticada como Pseudoxantoma Elástico. Son cuadros que pueden confundirse y es menester el diagnóstico diferencial, porque nuestra paciente de buen pronóstico tenía un diagnóstico ominoso.We report the case of a woman 55 years old affected by Fibrous Papulosis of the Neck, that was diagnosed as pseudoxanthoma elasticum. These are entities that may be confused but we emphasize the differential diagnosis, since in our case, a patient with good prognosis had an ominous diagnosis.

  2. Pudrición blanca de la cebolla: Una enfermedad difícil de combatir

    Directory of Open Access Journals (Sweden)

    Mar\\u00EDa del Milagro Granados

    2005-01-01

    Full Text Available Se hizo una revisión bibliográfica sobre la pudrición blanca o torbó de la cebolla, enfermedad causada por el hongo Sclerotium cepivorum Berk. Se tomó en cuenta aspectos como la distribución de la enfermedad a escala mundial, la sintomatología típica, el agente causal y los hospederos, así como el ciclo de vida del patógeno y la epidemiología de la enfermedad, además de las principales estrategias de combate. Se menciona brevemente la importancia del cultivo de la cebolla en el país, las zonas de siembra y el impacto de la enfermedad.

  3. Spatial distribution of canine zoonotic enteroparasites in Bahía Blanca, Argentina.

    Science.gov (United States)

    La Sala, Luciano F; Leiboff, Anastasia; Burgos, Julián M; Costamagna, Sixto R

    2015-01-01

    The objectives of this research were: (1) to determine the occurrence of zoonotic enteroparasites in dog feces from Bahía Blanca, Argentina; (2) to characterize the spatial distribution of the parasites found in association with the quality of life index (QLI) in neighborhoods of Bahía Blanca; and (3) to determine if the presence of a particular parasite genus in a stool sample was facilitated or impeded by the presence of other parasite genera. Samples of dog stools (n=475) were collected between December 2012 and December 2013 in areas with varying QLI. The association between QLI values and the presence of parasites was analyzed using logistic regression. Overall enteroparasite occurrence was 36.6%. Parasitic forms found included nematode larvae, cysts of Blastocystis spp., Giardia spp., and oocysts of Cryptosporidium spp., and eggs of Ancylostoma caninum, Toxocara canis, cestodes and Trichuris spp. For certain enteroparasites, we detected significant associations between their occurrence and QLI. Feces collected in areas with medium and low QLI were 2.46 and 5.43 times more likely, respectively, to contain A. caninum than stools from the high-QLI area. Samples from areas with low QLI were 2.36 times more likely to contain Trichuris spp. than those from the high QLI area. Regarding protozoa, feces from areas with low QLI were 2.4 times more likely to be positive than those from areas with high QLI. We demonstrated that canine zoonotic parasites have a wide distribution in the study area, and that occurrence is higher in neighborhoods with lower QLI. PMID:25705047

  4. Cultivo de cachama blanca en altas densidades y en dos sistemas cerrados

    Directory of Open Access Journals (Sweden)

    Germán Poleo

    2011-04-01

    Full Text Available El objetivo de este trabajo fue evaluar la tolerancia de la cachama blanca, Piaractus brachypomus, a cultivos en altas densidades en sistemas cerrados. Novecientos alevines de 44,3±26 g de peso, se distribuyeron en seis tanques de concreto, con 4,8 m³ de agua. Tres tanques presentaron cero recambio de agua (SCR, y en otros tres, el agua se hizo circular a través de un bioclarificador (SRA. Ambos tratamientos presentaron fuerte aireación para mantener los sólidos en suspensión y suministrar aire. Los peces se alimentaron a saciedad con pienso comercial por 192 días. Los parámetros de calidad de agua como: oxígeno disuelto, amonio total, nitritos, nitratos, alcalinidad, dureza, temperatura y pH, se midieron semanalmente. Los peces en el SCR crecieron a una tasa de 2,34±0,05 g por día, y tuvieron conversión alimenticia de 1,5±0,06, densidad final de 12,96±0,53 kg m-3, y peso final de 449,5±99 g. En el SRA, los peces crecieron 2,33±0,03 g por día, con conversión alimenticia de 1,6±0,07, densidad final de 12,13±1,12 kg m-3, y peso final de 446,5±10 g. La cachama blanca puede ser cultivada en sistemas cerrados con cero recambio de agua en altas densidades.

  5. Single layer centrifugation (SLC) improves sperm quality of cryopreserved Blanca-Celtibérica buck semen.

    Science.gov (United States)

    Jiménez-Rabadán, P; Morrell, J M; Johannisson, A; Ramón, M; García-Álvarez, O; Maroto-Morales, A; Alvaro-García, P J; Pérez-Guzmán, M D; Fernández-Santos, M R; Garde, J J; Soler, A J

    2012-12-01

    The aim of the present study was to evaluate the effect of sperm selection by means of single layer centrifugation (SLC) on sperm quality after cryopreservation, either when SLC is used before freezing or after thawing, using Blanca-Celtibérica buck semen collected by electroejaculation (EE). Ejaculates from six bucks were collected by EE and divided into two aliquots. One of them (unselected) was diluted with Biladyl(®) by the two-step method and frozen over nitrogen vapor. The other aliquot was selected by the SLC technique and subsequently frozen in the same way as the unselected samples (SLC before freezing). In a further treatment, two unselected straws were thawed and SLC was carried out (SLC after thawing). At thawing, sperm motility of all samples ((i) unselected; (ii) selected before freezing and (iii) selected after thawing) was evaluated by CASA. In addition, integrity of the plasma membrane, mitochondrial membrane potential, ROS production and DNA fragmentation index were assessed by flow cytometry. Most of the sperm parameters were improved (P≤0.001) in samples selected by SLC after thawing in relation to unselected or selected by SLC before freezing. The percentage of progressive motile spermatozoa was greater (86%) for sperm samples selected after thawing compared with unselected (58%) or selected before freezing (54%). Moreover, percentages of spermatozoa with intact plasma membrane and spermatozoa with high mitochondrial membrane potential (hMMP) were also greater for sperm samples selected after thawing compared to sperm samples unselected or selected before freezing (spermatozoa with intact plasma membrane: 80% vs. 32% vs. 12%; spermatozoa with hMMP: 54% vs. 1% vs. 15%; respectively). Therefore, sperm quality after cryopreservation is improved in Blanca-Celtibérica buck ejaculates collected by EE when a sperm selection technique such as SLC is carried out after thawing. PMID:23084569

  6. Fatty acid composition of muscle and adipose tissues of organic and conventional Blanca Andaluza suckling kids

    Directory of Open Access Journals (Sweden)

    F. De la Vega

    2013-01-01

    Full Text Available Interest in the preservation of autochthonous breeds such as the Blanca Andaluza goat (meat breed, raised under grazing-based management, has recently increased among Spanish farmers. A study of the possibilities of transformation to organic production needs to analyze the quality of their products. The aim of this study was to evaluate the fatty acid (FA composition of muscle and adipose tissues of Blanca Andaluza goat kids under organic and conventional grazing–based management system. Twenty-four twin kids (12 males, 12 females were selected from each system. The FA profile was determined in the longissimus thoracis muscle, kidney and pelvic fat. The percentages of C17:0, C17:1, C20:1, C20:4 n-6, C22:2 and several n-3 FAs were higher in organic meat; C12:0, C18:1 trans-11, CLA and C20:5 n-3 were lower in organic meat. The fat depots from the conventional kids showed lower percentages of C12:0, C14:0, C15:0, C17:0, C17:1, C18:3 n-3 and atherogenicity index, and higher percentage of C18:0. In the pelvic fat, the conventional kids displayed lower percentages of C16:0, C18:2 n-6 cis, PUFA, n-3 and n-6 FAs, and greater percentages of C18:1 n-9 cis and MUFA. The conventional kids displayed a major n6:n3 ratio in the kidney fat. No gender differences were observed. Significant differences were found only in some FA percentages of muscle and adipose tissues of suckling kids raised in organic and conventional livestock production systems, and due to this reason conventional grazing–based management farms could easily be transformed into organic production.

  7. Variabilidade de isolados de Microcyclus ulei no Sudeste da Bahia Variability of Microcyclus ulei isolates from Southeast Bahia

    Directory of Open Access Journals (Sweden)

    Carlos R. R. Mattos

    2003-10-01

    Full Text Available O fungo Microcyclus ulei, causador do mal-das-folhas da seringueira (Hevea brasiliensis, é o maior responsável pelo insucesso da heveicultura nas áreas tradicionais de cultivo no Brasil. Com o objetivo de conhecer melhor a diversidade desse patógeno foram estudados 50 isolados, obtidos nos anos 1997 e 1998, de uma área de 5.000 ha de seringueira da "Plantações Michelin da Bahia", no Sudeste da Bahia, através do tipo de reação de 12 clones de seringueira. As inoculações foram realizadas na face inferior dos folíolos jovens, repetidas três ou mais vezes em plantas diferentes, em câmara úmida com umidade superior a 95% e temperatura variando de 23 a 26 ºC. Após 12 dias efetuaram-se as avaliações, utilizando-se uma escala de notas de 1 a 6, que mede a virulência e a intensidade de esporulação. Foram identificados 36 padrões de virulência entre os 50 isolados testados, sendo que 21 apresentaram virulência a mais de nove clones e nenhum foi virulento a todos os 12 clones diferenciadores. A agressividade dos isolados, avaliada através da intensidade de esporulação, variou bastante com o clone. A exceção dos isolados FTP 11 e FTP 44, que de modo geral apresentaram uma agressividade fraca, um mesmo isolado apresentou-se altamente agressivo a um determinado clone e fracamente agressivo a outro. Alguns isolados, entretanto, mostraram uma alta agressividade aos clones de Hevea benthamiana, e outros aos clones de H. brasiliensis. Quatro isolados pareceram especializados sobre o clone FX 2784.South American Leaf Blight (SALB of Hevea rubber (Hevea brasiliensis tree, a disease caused by the fungus Microcyclus ulei, is the principal reason for the rather poor development of natural rubber production in Brazil. To obtain a more accurate knowledge of the diversity of this pathogen, 50 fungus isolates originated from the "Plantações Michelin da Bahia" were studied in 1997 and 1998, by observing the host's reaction type when

  8. Limitations on Environmental Responsibility in the Western Bahia Agrobusiness

    Directory of Open Access Journals (Sweden)

    Joana Roberta Neiva de Souza Ramos

    2015-04-01

    Full Text Available The present study examined the limitations on the role of associations responsible for the agribusiness segment in Western Bahia as regards issues that affect the region in their social, environmental and economic dimensions. It was a multiple-case, qualitative, descriptive and exploratory study, in which the limitations of responsible performance of each association were analyzed from the contrast between what has been done in the field of actions/projects, raised through interviews with managers of associations and documentary research, and the major issues affecting the region in its dimensions, identified from the questionnaires to social workers and documentary research. The results show that none of these associations have any initiative to address the problems of all dimensions examined, and none of the identified initiatives cater fully to any area of any of these dimensions. It appears also that the set of limitations around the responsible performance of organizations is subject to the form of development that has subsidized expressive performance of the sector and allowed for the proliferation of a range of social and environmental problems that reveal the unsustainability of the region over time.

  9. Hemoglobinopathies in newborns from Salvador, Bahia, Northeast Brazil

    Directory of Open Access Journals (Sweden)

    Adorno Elisângela Vitória

    2005-01-01

    Full Text Available Hemoglobinopathies are hereditary disorders of the hemoglobin molecule with a high prevalence worldwide. Brazil has a prevalence of 0.1 to 0.3% of newborns with sickle cell anemia and 20.0 to 25.0% of heterozygous alpha2 thalassemia among African Brazilians. In the present study, we investigated the presence of variant hemoglobins and alpha2(3.7 Kb and alpha2(4.2 Kb thalassemia in newborns from Salvador, Bahia, Brazil. Samples of umbilical cord blood from a total of 590 newborns were analyzed, of which 57 (9.8% were FAS; 36 (6.5% FAC; one (0.2% SF; and five (0.9% FSC. One hundred fourteen (22.2% newborns had alpha2(3.7 Kb thalassemia, of whom 101 (19.7% were heterozygous and 13 (2.5% homozygous, showing statistical significance for hematological data between newborns with normal alpha genes and alpha2(3.7 Kb thalassemia carriers. The alpha2(4.2 Kb thalassemia was not found. Frequencies found in the present study confirm that hemoglobinopathies are a public health problem in Brazil, emphasizing the need for neonatal screening and genetic counseling programs.

  10. Metamorphism, metasomatism and mineralization at Lagoa Real, Bahia, Brazil

    International Nuclear Information System (INIS)

    Uranium deposits cumulatively in the 100,000 tonne U3 O8 range occur within ductile shear zones transecting Archean basement gneisses of the Sao Francisco Craton, at the Lagoa Real region of south-central Bahia, Brasil. The gneisses, dated at 2.6-3.0Ga, are at amphibolite and granulite facies and overlie to the west, the Proterozoic Espinhaco metasedimentary sequence along a thrust fault. Petrography and mineral chemistry show that in the zones of alteration/mineralization, the original K-feldspar + quartz + albite/oligoclase + hastingsite assemblage, is replaced by albite + aegirine - angite + andradite + hematite assemblages, with or without uraninite. This information along with oxygen isotope, whole rock geochemistry and fluid inclusion studies indicate that the alteration process involves removal of Si, K, Rb, Ba and addition of Na under oxidizing conditions. V, Pb and Sr were introduced along with U via interaction with saline SO2 - rich, isotopically light fluids under varying water/rock ratios and at temperatures of 500 - 5500C. 87Sr/86Sr systematics suggest that it is unlikely that Sr, and by extension uranium, were introduced by fluids originating from the basement gneisses. Geological constraints and the general alteration pattern are consistent with the release of the mineralizing fluids in response to the overloading of the basement rocks onto the Sedimentary Espinhaco via a thrust mechanism. (Author)

  11. Drinking water: problems related to water supply in Bahía Blanca, Argentina Agua potable: problemas en el abastecimiento de la ciudad de Bahía Blanca, Argentina

    OpenAIRE

    Ricardo Echenique; Leda Giannuzzi; Luis Ferrari

    2006-01-01

    In April 2000, alterations in drinking water quality, such as turbidity and odors similar to those of organochloride pesticides, were detected at Bahía Blanca (Argentina). This fact was associated to reports of dermic reactions and respiratory problems in the population. Samples drawn from Paso de las Piedras reservoir, two water treatment plants of at inlet and outlet points and at several particular houses were analyzed. Total phytoplankton in the reservoir varied between 49440 and 84832 ce...

  12. Recent (0-8 Ma) tectonics and exhumation processes in Cordilleras Blanca and Negra, Central Peru: Constraints from (U-Th)/He dating

    Science.gov (United States)

    Margirier, Audrey; Robert, Xavier; Gautheron, Cécile; Audin, Laurence

    2014-05-01

    The Central Andes are a classical example of topography building in front of an oceanic subduction. However, many first order questions are still debated: How do subduction processes and observed tectonic uplift interact along the Andean margin? What is the impact of tectonic, magmatism and climate on exhumation? The Cordilleras Blanca (6768 m) and Negra (5181 m), in north Central Peru, belong to the highest Andean reliefs. Both ranges trend parallel to the subduction zone and are separated by the NW-SE Rio Santa valley. The Cordillera Blanca pluton formed in an active subduction context at 8-5 Ma and renders an abnormal magmatic activity over a planar subduction. In contrast with the Cordillera Blanca, the Cordillera Negra is an older relief, which evolution and exhumation history has never been studied. A remarkable ~200 km-long normal fault system showing ~4500 m of vertical displacement since 5 Ma edges the western flank of the Cordillera Blanca. This region is a perfect target to study the impact of magmatism and subduction processes on exhumation. We perform a morphotectonic study on both cordilleras coupled with low-temperature thermochronology apatite (U-Th)/He dating to quantify these processes. Geomorphic parameters and altitude contrasts between these two ranges indicate a differential uplift. The Cordillera Negra displays a smooth and asymmetric relief from the West to the East whereas the Cordillera Blanca shows higher and sharper relief with North/South and East/West contrasts. We obtain apatite (U-Th)/He ages for twenty samples located along vertical and horizontal profiles at different latitudes of the Cordilleras Blanca and Negra. The (U-Th)/He ages range from 13.4 ± 1.3 to 5.6 ± 0.6 Ma in the Cordillera Negra and range from 11.8 ± 1.2 to 2.0 ± 0.2 Ma in the Cordillera Blanca. We use them as inputs in QTQt tools for time-temperature reconstructions and thus to constrain the exhumation history. Whole ages evidence a more regional exhumation than

  13. Education reform, race, and politics in Bahia, Brazil Reforma escolar, racismo y políticas locales en Bahia, Brasil Reforma educacional, racial e política na Bahia, Brasil

    OpenAIRE

    Bernd Reiter

    2008-01-01

    This article discusses the main findings and conclusions from my field research evaluating education reform in the state of Bahia, Brazil. Data collection was done during two exploratory research trips to Salvador, the state capital, in 2001 and in 2005. The Bahian Education Reform, initiated by the state government in 1999 and funded to a great extent by the World Bank, has achieved some very significant goals, most importantly the expansion of high school education and the broadening of acc...

  14. Remote Sensing Analysis of the Sierra Blanca (Faskin Ranch) Low-Level Radioactive Waste Disposal Site, Hudspeth County, Texas

    Energy Technology Data Exchange (ETDEWEB)

    LeMone, D. V.; Dodge, R.; Xie, H.; Langford, R. P.; Keller, G. R.

    2002-02-26

    Remote sensing images provide useful physical information, revealing such features as geological structure, vegetation, drainage patterns, and variations in consolidated and unconsolidated lithologies. That technology has been applied to the failed Sierra Blanca (Faskin Ranch) shallow burial low-level radioactive waste disposal site selected by the Texas Low-Level Radioactive Waste Disposal Authority. It has been re-examined using data from LANDSAT satellite series. The comparison of the earlier LANDSAT V (5/20/86) (30-m resolution) with the later new, higher resolution ETM imagery (10/23/99) LANDSAT VII data (15-m resolution) clearly shows the superiority of the LANDSAT VII data. The search for surficial indications of evidence of fatal flaws at the Sierra Blanca site utilizing was not successful, as it had been in the case of the earlier remote sensing analysis of the failed Fort Hancock site utilizing LANDSAT V data. The authors conclude that the tectonic activity at the Sierra Blanca site is much less recent and active than in the previously studied Fort Hancock site. The Sierra Blanca site failed primarily on the further needed documentation concerning a subsurface fault underneath the site and environmental justice issues. The presence of this fault was not revealed using the newer LANDSAT VII data. Despite this fact, it must be remembered that remote sensing provides baseline documentation for determining future physical and financial remediation responsibilities. On the basis of the two sites examined by LANDSAT remote sensing imaging, it is concluded that it is an essential, cost-effective tool that should be utilized not only in site examination but also in all nuclear-related facilities.

  15. ÍNDICE TECNOLÓGICO E SAZONALIDADE DO MARACUJÁ NO EXTREMO SUL DA BAHIA

    OpenAIRE

    Araujo, Antonio Carlos; Khan, Ahmad Saeed; Silva, Lucia Maria Ramos; Araujo, Leonardo Ventura

    2008-01-01

    A cultura do maracujá está em fase de crescimento no Extremo Sul da Bahia, o que contribuiu para que o Estado da Bahia tenha alcançado a posição de maior produtor dessa fruteira. Esta alavancagem do maracujá na região se deve às condições edafo-climáticas favoráveis e à necessidade de diversificar a economia em virtude da crise da cacauicultura. A sustentabilidade da cultura do maracujá depende das tecnologias e informações que possam ser disponibilizados aos produtores e que sejam gerados na...

  16. Preferencias de consumo de cuatro forrajes por venado cola blanca (Odocoileus virginianus mantenidos en cautiverio en Yucatan

    Directory of Open Access Journals (Sweden)

    Israel Fernando Castillo-López

    2011-02-01

    Full Text Available El  venado cola blanca  (Odocoileus  virginianus.Zimmermann es uno de los recursos silvestres y cinegéticos más  importantes  en México.  Sin embargo,  los estudios que existen sobre  su crianza en cautiverio son insuficientes para optimizar su producción. El objetivo planteado en este trabajo fue  evaluar  la  preferencia  relativa  de  cuatro forrajes,  comparar  el  consumo  ad  libitum  del forraje nativo preferido contra un pasto de corte, en venados cola blanca mantenidos en cautiverio, y medir  la relación entre el contenido de sustancias antinutricionales de  los alimentos con el consumo.Se utilizaron cuatro venados cola blanca machos adultos  con  peso  promedio  de  45  Kg,  y  tres especies de árboles  forrajeros nativos: Leucaena leucocephala, Guazuma ulmifolia,  Brosimum alicastrum  y  el  pasto  de  corte  Pennisetum purpureum.  Para  medir  la  preferencia  se realizaron dos experimentos, mediante el diseño

  17. Optimizacion de una técnica para la detección de patologías virales en Pleoticus Muelleri (Bate, 1988 en el estuario de Bahía Blanca, Argentina

    Directory of Open Access Journals (Sweden)

    Ana M. Roccamo

    2010-06-01

    determine whether these viruses occur in wild populations of Pleoticus muelleri in Bahía Blanca estuary, Argentina, using biochemical, molecular biology and genetics methods. The results show that the methods used for DNA and RNA extraction and purification from the tissue and hemolymph of these crustaceans, and the techniques for their capture, packaging and transportation to the laboratory have been optimized. Tests were properly validated by negative and positive controls. None of the named diseases were found in the wild populations of Pleoticus muelleri. The methodology followed in the present research not only enables early detection and diagnosis of the three viral pathologies but also ensures an infection-free status with the concomitant health benefits for the region.

  18. National Estuary Program Study Area Boundaries

    Data.gov (United States)

    U.S. Environmental Protection Agency — There are 28 National Estuary Programs (NEPs) in the U.S.that implement habitat protection and restoration projects with their partners. This work takes place...

  19. Carbon isotope geochemistry in the Yalujiang estuary

    Institute of Scientific and Technical Information of China (English)

    吴莹; 张经

    2001-01-01

    The distribution of particulate organic carbon (POC) along the lower reaches is similar between the dry season and the flood season in the Yalujiang Estuary, North China. However, the values of particulate organic carbon of the upperstream in the dry season are one magnitude lower than the concentrations in the flood season. Stable carbon isotope ratios have been used to study the sources of particulate organic carbon in the Yalujiang Estuary. The isotopic composition of POC shows a range from -23.1‰ to -29.4‰ with a little seasonal variation. The isotopic evidence indicates that the POC in the Yalujiang Estuary is predominantly of terrestrial origin rather than a result of in situ plankton. The study of the ratio of POC: Chla shows that the turbidity maximum plays an important role in POC cycle in the Yalujiang Estuary. Organic detritus and soil erosion are the main contributions to POC in the turbidity maximum, especially in the flood season.

  20. Mercury in sediments of Ulhas estuary

    Digital Repository Service at National Institute of Oceanography (India)

    Ram, A.; Rokade, M.A.; Borole, D.V.; Zingde, M.D.

    Hg levels in water, suspended particulate matter and sediment of the Ulhas estuary are under considerable environmental stress due to the indiscriminate release of effluents from a variety of industries including chlor-alkali plants. Concentration...

  1. Microplastic in three urban estuaries, China.

    Science.gov (United States)

    Zhao, Shiye; Zhu, Lixin; Li, Daoji

    2015-11-01

    Estuarine Microplastics (MPs) are limited to know globally. By filtering subsurface water through 330 μm nets, MPs in Jiaojiang, Oujiang Estuaries were quantified, as well as that in Minjiang Estuary responding to Typhoon Soulik. Polymer matrix was analyzed by Raman spectroscopy. MP (plastics. The highest MPs density was found in Minjiang, following Jiaojiang and Oujiang. Fibers and granules were the primary shapes, with no pellets found. Colored MPs were the majority. The concentrations of suspended microplastics determine their bioavailability to low trophic organisms, and then possibly promoting the transfer of microplastic to higher trophic levels. Polypropylene and polyethylene were the prevalent types of MPs analyzed. Economic structures in urban estuaries influenced on MPs contamination levels. Typhoon didn't influence the suspended MP densities significantly. Our results provide basic information for better understanding suspended microplastics within urban estuaries and for managerial actions. PMID:26312741

  2. Critical analysis of the PETROBRAS monopoly end - particularities of the Bahia state, Brazil; Uma analise critica do fim do monopolio da PETROBRAS - particularidades para o Estado da Bahia

    Energy Technology Data Exchange (ETDEWEB)

    Cerqueira, Alexandre B.; Ribeiro, Bradson F. [Bahia Univ., Salvador, BA (Brazil). Dept. de Engenharia Quimica. Curso de Especializacao em Engenharia do Gas Natural; Rocha, Georges S. [Centro Federal de Tecnologia da Bahia, Salvador, BA (Brazil)

    2005-07-01

    The Agencia Nacional de Petroleo - ANP - created in 1997 by the petroleum law has the role of regulating oil and natural gas industry activities in Brazil inciting the power self-sufficiency. The petroleum law states the end of petroleum exploration monopoly in Brazil performed by PETROBRAS. Between 1998 and 2004 ANP carried out six bid rounds in brazilian sedimentary basins offered to national and foreign companies. The exploratory activities in Bahia are resulting in commercial discoveries and positive impact to local economy. The petrochemical industry expects the startup of Manati field operation to supply repressed demand of natural gas as fuel and raw material. This article analyzes the legal and institutional processes and economics performances of these activities in Bahia's state. (author)

  3. Mixing in the Amazon estuary

    Science.gov (United States)

    Bezerra, M. O.

    2010-05-01

    The research area of this work is located at the estuary of the Amazon River (Brazil), near the river mouth. The results of air movement analysis on the surface atmospheric circulation over the Mouth of the Amazonas River, salinity and temperature measures as well as measurements of currents, carried out along a longitudinal section in the navigation canal region of the Northern Bar of the Amazon River (Barra Norte do Rio Amazonas) in June 2006, during the river flood season in the quadrature tide. The dynamics effects affect hydrodynamic,meteorological and hydrographical parameters at the river mouth. The conclusion drawn include that: a) the saline wedge-type stratification can be detected approximately 100km away from the mouth of the Amazon River during the end of the rainy season in the quadrature tide; b) probably, at the Amazon estuary the quadrature entrainment processes are dominant and they are the ones responsible for increased salinity detected in the surface layer, whereas turbulence scattering mixing is not so important. c) The large flow of fresh water from the Amazon River at the end of the rainy season implies the displacement of the saline front position over the internal Amazon continental platform, and d) The tidal wave shows a positive asymmetry in the canal, with floods lasting less than in the ebb tide. This asymmetry decreases towards the ocean, eventually becoming reversed in the presence of a saline wedge. The speeds, however, have a negative asymmetry, with more intense ebb tides, due to the river flow and is more evident by the existence of quadrature tides.

  4. Bar dimensions and bar shapes in estuaries

    Science.gov (United States)

    Leuven, Jasper; Kleinhans, Maarten; Weisscher, Steven; van der Vegt, Maarten

    2016-04-01

    Estuaries cause fascinating patterns of dynamic channels and shoals. Intertidal sandbars are valuable habitats, whilst channels provide access to harbors. We still lack a full explanation and classification scheme for the shapes and dimensions of bar patterns in natural estuaries, in contrast with bars in rivers. Analytical physics-based models suggest that bar length in estuaries increases with flow velocity, tidal excursion length or estuary width, depending on which model. However, these hypotheses were never validated for lack of data and experiments. We present a large dataset and determine the controls on bar shape and dimensions in estuaries, spanning bar lengths from centimeters (experiments) to 10s of kilometers length. First, we visually identified and classified 190 bars, measured their dimensions (width, length, height) and local braiding index. Data on estuarine geometry and tidal characteristics were obtained from governmental databases and literature on case studies. We found that many complex bars can be seen as simple elongated bars partly cut by mutually evasive ebb- and flood-dominated channels. Data analysis shows that bar dimensions scale with estuary dimensions, in particular estuary width. Breaking up the complex bars in simple bars greatly reduced scatter. Analytical bar theory overpredicts bar dimensions by an order of magnitude in case of small estuarine systems. Likewise, braiding index depends on local width-to-depth ratio, as was previously found for river systems. Our results suggest that estuary dimensions determine the order of magnitude of bar dimensions, while tidal characteristics modify this. We will continue to model bars numerically and experimentally. Our dataset on tidal bars enables future studies on the sedimentary architecture of geologically complex tidal deposits and enables studying effects of man-induced perturbations such as dredging and dumping on bar and channel patterns and habitats.

  5. Carbon dioxide and methane emissions from estuaries

    OpenAIRE

    Abril, G.; Borges, Alberto

    2005-01-01

    Carbon dioxide and methane emissions from estuaries are reviewed in relationwith biogeochemical processes and carbon cycling. In estuaries, carbondioxide and methane emissions show a large spatial and temporalvariability, which results from a complex interaction of river carbon inputs,sedimentation and resuspension processes, microbial processes in watersand sediments, tidal exchanges with marshes and flats and gas exchangewith the atmosphere. The net mineralization of land-derived organic ca...

  6. Tidal Heights in Hyper-Synchronous Estuaries

    OpenAIRE

    Ian M. Kidd; Shuhong Chai; Andrew Fischer

    2014-01-01

    Inconsistencies between datasets are examined with reference to flood tidal elevations in the Tamar River estuary, Tasmania Australia. Errors in a 30-year-old commonly cited dataset have been perpetuated in subsequent publications and datasets, and a clarification is herein provided. Elevation of the flood tidal wave as it propagates the estuary is evident in mean tide level and mean sea level, although the analysis is compromised by the temporal differences of the d...

  7. O que é que a bahia representa? O Museu do Estado da Bahia e as disputas em torno da definição da cultura baiana

    OpenAIRE

    Anadelia Romo

    2009-01-01

    This article examines the history of a Bahian institution that has escaped modern scholarly attention but formed the center of a larger debate about the representation of culture in the Vargas Era: the State Museum of Bahia. A close analysis of the museum illuminates not only a critical moment of conflict in Bahian history, but also broader conflicts about representations of Afro-Brazilian culture and popular culture.

  8. U-Pb aging of the sodalite-syenite (Blue-Bahia) mineralization in the Lichfield stock of Itaju do Colonia, southern Bahia, Brazil

    International Nuclear Information System (INIS)

    The Litchfieldite Stock of Itaju do Colonia is one of the intrusions from the Alkaline Province of the South Bahia State, which host the blue coloured sodalite-syenite ore. The U-Pb isotopic results for titanite from the sodalite-syenites of this complex yield an age of 732 ± 8 Ma, which is interpreted as the crystallization age for the blue-sodalite-ore. (author)

  9. Past peak water in Peru's Cordillera Blanca: diagnosing the demise of glacier influence on stream discharge

    Science.gov (United States)

    Baraer, M.; Mark, B. G.; McKenzie, J. M.

    2011-12-01

    In conditions of continuous retreat, glaciers generate a temporary increase in stream runoff as they lose mass. Yet as the extant glacier volume diminishes, the annual runoff reaches a peak and is followed by a persistent decrease. In the present study we explore historical and modern discharge measurements measured between 1952 and 2010 at nine stations across the upper Rio Santa watershed, the basin that drains most of the western Cordillera Blanca, Peru, and situate the regional stream hydrology within this glacier influence change sequence. The relation between glacial retreat and stream discharge is investigated by the use of a simple water balance model that simulates glacier retreat influence on the annual and dry-season discharge, as well as on the annual discharge variability, permitting distinction between four phases of glacier retreat hydrological impact. The link between the modeled synthetic time series and the Cordillera Blanca discharge records is assessed using polynomial regressions and the Mann-Kendall non-parametric statistical test on daily discharge series for three hydrograph parameters: the yearly average, the dry season discharge and the variability coefficient. The glacial retreat for the same period is estimated using existing historical data of glacial coverage from an analysis of composite ASTER imagery that shows accelerating glacier recession in the upper Rio Santa watershed, with the overall glacierized area decreasing annually by 0.81 % between 1990 and 2009. The results provide statistically significant evidence that seven of the nine discharge time series have crossed a critical transition, and now exhibit a decreasing trend related to glacier retreat. La Balsa station measures discharge from the entire upper Rio Santa before entering a major hydro-electrical power plant, and it is undergoing a decline in dry season flow that probably began during the 1970s. Our results predict that if the glaciers completely melt, stream

  10. New geologic slip rates for the Agua Blanca Fault, northern Baja California, Mexico

    Science.gov (United States)

    Gold, P. O.; Behr, W. M.; Fletcher, J. M.; Hinojosa-Corona, A.; Rockwell, T. K.

    2015-12-01

    Within the southern San Andreas transform plate boundary system, relatively little is known regarding active faulting in northern Baja California, Mexico, or offshore along the Inner Continental Borderland. The inner offshore system appears to be fed from the south by the Agua Blanca Fault (ABF), which strikes northwest across the Peninsular Ranges of northern Baja California. Therefore, the geologic slip rate for the ABF also provides a minimum slip rate estimate for the offshore system, which is connected to the north to faults in the Los Angeles region. Previous studies along the ABF determined slip rates of ~4-6 mm/yr (~10% of relative plate motion). However, these rates relied on imprecise age estimates and offset geomorphic features of a type that require these rates to be interpreted as minima, allowing for the possibility that the slip rate for the ABF may be greater. Although seismically quiescent, the surface trace of the ABF clearly reflects Holocene activity, and given its connectivity with the offshore fault system, more quantitative slip rates for the ABF are needed to better understand earthquake hazard for both US and Mexican coastal populations. Using newly acquired airborne LiDAR, we have mapped primary and secondary fault strands along the segmented western 70 km of the ABF. Minimal development has left the geomorphic record of surface slip remarkably well preserved, and we have identified abundant evidence meter to km scale right-lateral displacement, including new Late Quaternary slip rate sites. We verified potential reconstructions at each site during summer 2015 fieldwork, and selected an initial group of three high potential slip rate sites for detailed mapping and geochronologic analyses. Offset landforms, including fluvial terrace risers, alluvial fans, and incised channel fill deposits, record displacements of ~5-80 m, and based on minimal soil development, none appear older than early Holocene. To quantitatively constrain landform ages

  11. Total petroleum hydrocarbons and trace metals in tropical estuary of Todos os Santos Bay, Brazil

    Energy Technology Data Exchange (ETDEWEB)

    Celino, Joil Jose; Oliveira, Olivia Maria Cordeiro de; Queiroz, Antonio Fernando de Souza [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil); Trigueis, Jorge Alberto [Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ (Brazil); Garcia, Karina Santos [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil)

    2008-07-01

    As part of the environmental assessment within Todos os Santos Bay, State of Bahia - Brazil, in summer of 2005, superficial water and sediments samples of the mangrove were collected at five locations to determine the spatial distribution of anthropogenic pollutants in the Dom Joao estuary at the Sao Francisco do Conde Region. Sandy sediments with low organic matter content dominate the studied area. Trace metal levels indicated that sediments were moderately polluted with Cu (overall mean: 21.48 +/- 4.76 {mu}g.g-1 dry sediment), but not with Pb (15 +/- 8), Zn (38 +/- 10), Cr (15 +/- 7), Ni (13 +/- 6) and Cd (0.4 +/- 0.2). Depending on location, total petroleum hydrocarbons ranged from 1.6 to 10.6 {mu}g.g-1. To discriminate pattern differences and similarities among samples, principal component analysis (PCA) was performed using a correlation matrix. PCA revealed the latent relationships among all the stations investigated and confirmed our analytical results. Principal components analysis confirmed two regions according to their environmental quality. The results pointed out that almost all the area presented some substances that can cause adverse biological effects, especially in the outermost region where some metals are above TEL level. (author)

  12. Pitiose em ovinos nos estados de Pernambuco e Bahia Pythiosis in sheep from Pernambuco and Bahia States, Brazil

    Directory of Open Access Journals (Sweden)

    Manuel V. Carrera

    2013-04-01

    Full Text Available A pitiose é uma doença infecciosa causada pelo oomiceto aquático P. insidiosum que acomete animais e o homem, especialmente habitantes de áreas úmidas. A enfermidade apresenta como característica principal a formação de lesões com aspecto granulomatoso nos hospedeiros. Neste trabalho, relatou-se a ocorrência da pitiose em ovinos nos estados de Pernambuco (PE e Bahia (BA, Nordeste do Brasil, bem como foi avaliada a eficácia de um imunoterápico frente a esta enfermidade. Amostras de sangue de 53 ovinos foram coletadas, sendo 49 animais oriundos de propriedades localizadas em PE e quatro animais provenientes da BA. Sete ovinos demonstraram sinais clínicos de pitiose ovina. Um dos animais foi submetido à eutanásia e sua cabeça e linfonodo submandibular foram coletados e enviados para análises laboratoriais. Seis ovinos foram submetidos à imunoterapia, sendo mantidos nas instalações do setor de ovinocultura da Univasf/Petrolina-PE durante o tratamento. As técnicas de ELISA, cultura fúngica e reação em cadeia da polimerase (PCR foram utilizadas como métodos diagnósticos da pitiose ovina, sendo eficientes para confirmação dos casos clínicos no rebanho. Ao exame microscópico do material coletado da cavidade nasal de um animal eutanasiado, observou-se uma área focalmente extensa de necrose com presença de infiltrado difuso de neutrófilos íntegros e degenerados margeando a cartilagem. Somente um animal apresentou cura clínica, indicando uma eficiência no tratamento da pitiose de 16,7% (1/6. O aumento de casos de pitiose tem sido denotado em diversos municípios de PE e da BA. Neste contexto, o emprego do imunoterápico pode ser uma alternativa a ser pesquisada. Portanto, estudos futuros devem ser realizados para investigar o efeito da imunoterapia aplicada à pitiose em ovinos.Pythiosis is a devastating infectious disease caused by an aquatic oomycete, Pythium insidioum, and affects animals and humans that inhabit

  13. Epidemiologia do dengue em Salvador-Bahia,1995-1999 Epidemiology of dengue in Salvador-Bahia, 1995-1999

    Directory of Open Access Journals (Sweden)

    Maria da Glória Teixeira

    2001-06-01

    Full Text Available Desde 1981, o Brasil tem registrado epidemias de dengue de grande magnitude e atualmente circulam simultaneamente dois sorotipos DEN-1 e DEN--2, em mais de 2.700 municípios. Em Salvador - Bahia, situada na Região Nordeste do país, ocorreram duas epidemias nos anos de 1995 e 1996, e posterior endemização da doença. Este estudo analisa a incidência desta virose nesse município, no período de 1995 a 1999, considerando entre outras variáveis, sua distribuição nos Distritos Sanitários e a situação de densidade do Aedes aegypti. Utiliza como fonte de dados registros oficiais de notificação e do programa de combate vetorial da cidade. A taxa de incidência de dengue foi de 691,4 e 393,5 por 100.000 habitantes, respectivamente, em 1995 e 1996, reduziu-se para 65 por 100.000 em 1998. Nos Distritos Sanitários mais carentes, este indicador alcançou valores superiores a 800 por 100.000 habitantes. O Índice de Infestação Predial pelo Aedes chegou a atingir 54,1% em um dos seus bairros. Considerando a importância da reemergência do dengue no mundo os autores discutem os possíveis fatores que condicionaram a introdução do vírus, as suas apresentações epidemiológicas no curso de 4 anos, e a efetividade do programa de combate vetorial.Since 1981, Brazil has registered dengue epidemic and simultaneous circulation of the DEN-1 and DEN-2 serotypes in over 2,700 municipalities. In Salvador- Bahia, located in the Northeastern region of the Country, two epidemic outbreaks occurred in the years of 1995 and 1996, with further endemic spread of the disease. This study analyses the incidence of the virosis within this municipal area, from 1995 to 1999, considering, among other variables, its distribution in the Sanitary Districts and density of Aedes aegypti. Registers of notified cases and the city's Vectorial Control Program were used as data source. The incidence rate of notified cases of dengue in 1995 and 1996, which were 691.4 and 393

  14. Tendência de mortalidade infantil na cidade do Salvador (Bahia Infant mortality trends in Salvador (Bahia

    Directory of Open Access Journals (Sweden)

    Celia Guimarães Netto Dias

    1975-03-01

    Full Text Available Revisão das causas de óbito de crianças com menos de um ano de idade no município de Salvador Bahia (Brasil no período de 1962 a 1971, tendo sido investigada do ponto de vista estatístico, a tendência secular da mortalidade infantil. Para alguns dos dados foi ajustada uma reta pela equação matemática da forma Y = a + bx através do método dos mínimos quadrados, enquanto que para outros ajustou-se uma exponencial modificada do tipo Y = k + ab x. A tendência global da mortalidade infantil no período de 1962 a 1970 é descendente, tendo no entanto se elevado em 1971 atingindo um coeficiente praticamente igual ao alcançado no ano de 1964. Fato semelhante ocorreu com a mortalidade por enterite e outras doenças diarréicas.The death causes of children under one year of age in the city of Salvador, Brazil, between 1962 and 1971, including a statistical investigation of the secular tendency of the infant mortality rate, were reviewed. For some data a straight line was adjusted with a mathematical equation of the type Y = a + bx (method of the least squares. For other a modified exponential curve of the type Y = k + ab x was used. The general tendency of the infant mortality rate was descendent throughout the period 1962 to 1970, arising in 1971 to levels observed in 1964. A similar fact was encountered when neonatal mortality and mortality rates by gastroenteritis and other diarrheal diseases were studied.

  15. Pouzolzia saxophila sp. nov. (Urticaceae tribe Boehmerieae) from Bahia, Brazil

    DEFF Research Database (Denmark)

    Wilmot-Dear, Christine Melanie; Friis, Ib; Monro, Alex K.

    2015-01-01

    xerophytic scrub vegetation on rocky outcrops in the Boa Nova National Park, Bahia, Brazil. The new species is somewhat similar to P. pringlei, a Mexican endemic, and to P. amambaiensis from the Brazil–Paraguay border, but also to the widespread Asiatic P. zeylanica. However, the similarities with these...

  16. Schooling for Some: Local Financial Commitment to Basic Education in Bahia, Brazil.

    Science.gov (United States)

    Plank, David N.; Verhine, Robert E.

    1995-01-01

    Recent literature on Brazilian educational finance has documented low expenditure levels and problems of efficiency, efficacy, and equity. This paper analyzes financial data from Bahia state "municipios" and examines revenue and expenditure trends to explain variations in financial commitment across "municipios." Local interest in education, not…

  17. [The popular zootherapy in Bahia State: registration of new animal species used as medicinal resources].

    Science.gov (United States)

    Neto, Eraldo Medeiros Costa

    2011-01-01

    This article deals with the use of animals as medicinal resources in Bahia State, Northeastern Brazil. The data come from a processional evaluation of academic performance, since it was an exercise requested by the professor of the discipline Ethnobiology (2007.2 semester) to the students of the course Bahia State Teachers' Undergraduation of Feira de Santana State University. They were asked to make a brief survey, in their respective cities, on the use of animals as medicines. Forty-one students, from 21 cities of the country of Bahia State, have participated with data. A total of 95 animals (common names) were recorded, from which 17 are new additions to the list of medicinal animal species already published. The recording of the use of animals as folk medicines in the state of Bahia provides a significant contribution to the phenomenon of zootherapy, because it opens a space to debate about conservation biology, health public policies, sustainable management of natural resources, bioprospection, and patent. It is necessary to carry out more ethnozoological studies both to comprehend the true importance of zootherapy to the traditional communities and to develop some strategies of sustainable management and use of animal species, especially for those under risk of extinction. PMID:21503516

  18. Phosphorus and uranium in fossils of Bahia Inglesa, Chile. Comparison with actual pieces

    International Nuclear Information System (INIS)

    In the phosphoric ore deposit of Bahia Inglesa, Chile, several fossils of selaqueous teeth and cetaceous bones have been recognized. Whales and sharks fossil and their present equivalent parts were submitted to chemical analysis and compared regarding some elements. A discussion about the deposit's origin, is presented. (M.C.K.)

  19. New Occurrence Data of Neotropical Otters Lontra longicaudis (Olfers, 1818, in Bahia State, Northeastern Brazil

    Directory of Open Access Journals (Sweden)

    Souto L.R.A.

    2012-01-01

    Full Text Available Very little is known about the neotropical otter (Lontra longicaudis in the Brazilian state of Bahia. The purpose of this study was to record the number and location of sites where otters have been recorded in this area. Between 1988 and 2009, there were 29 records of otters in Bahia, including the collection of 13 living (9 and dead (4 otters. Of the live otters, 61.53% were adults and 38.46% pups. Five of these were males, five were females and the gender of three individual was not established. The majority (41,37% of otter records were made in northern Bahia, and 31.03% were made in southern Bahia (31.03%. Eight records (27,58% were made in the area around Todos os Santos bay, including seven sites where the species was not previously known to occur. No observations were made in the mid-west region of the state, so future studies are needed in this region.

  20. CARACTERIZACIÓN ANATÓMICA DE LAS HOJAS DE LA ALBAHACA BLANCA (Ocimum basilicum L.

    Directory of Open Access Journals (Sweden)

    Ofelia Sam

    2002-01-01

    Full Text Available La albahaca tiene amplios y variados usos medicinales, debido a sus múltiples propiedades, motivo por el cual se decidió realizar el presente trabajo, con el objetivo de estudiar la anatomía foliar de plantas de albahaca blanca. El experimento se realizó en el Instituto Nacional de Ciencias Agrícolas (INCA con plantas cultivadas en macetas. Las muestras de tejido foliar fueron cortadas a mano alzada y de la epidermis se tomaron impresiones de ambas superficies foliares. Se pudo apreciar que entre los parénquimas clorofílicos en ambas superficies de la hoja, se ven las cavidades que contienen los aceites esenciales de la albahaca. Una de las características importantes de estas cavidades es que se encuentran en ambas superficies. En las hojas analizadas se pudieron observar glándulas en diferentes estadios de crecimiento; esta es una característica muy importante, ya que pudieran variar según las condiciones en que se desarrollan las plantas.

  1. Uranium deposits associated to tertiary acid volcanism of the Pena Blanca Sierra (Chihuahua, Mexico)

    International Nuclear Information System (INIS)

    The uraniferous deposits located in the Sierra de Pena Blanca (Chihuahua, Mexico) are the consequence of successive events that modified acid volcanic rocks. The devitrification of the Nopal Formation, vitroclastic tuffs, is esential in the cooling history because it releases uranium that becomes available. The uranium present in fluids as uranylcarbonate complexes, precipitate along the lamellea of hematite (exsolutions of the ilmenites). The presence of sulfur causes the destabilization of the ilmenites with uranium oxide (pitchblende - titanium oxide - pyrite), the pseudomorph of magnetites (pitchblende - pyrite) and the transformation of hematite into pyrite. The silice coming from the kaolinization of feldspars recristallizes as microcristalline quartz so that the rock appears compact. Fractures cause the uplifting of the lower unit of Nopal formation. It has been altered to montmorillonite. A carbonatation of this tuff has been observed and these two types of alteration occur after kaolinization. The Escuadra formation overlies the Nopal formation. The deposition takes place on an eroded basement where a soil developed. The two formations will together undergo transformations due to the saturation level and the primary ore will be only oxidized or oxidized, transported and reconcentrated. Late and localized thermal activities have been observed and may be the result of tectonic movements occurring after the supergene modification

  2. PHASE ANALYSES OF URANIUM BEARING MINERALS FROM THE HIGH GRADE ORE, NOPAL I, PENA BLANCA, MEXICO

    International Nuclear Information System (INIS)

    The Nopal I uranium deposit is located in the Pena Blanca district, approximately 40 miles north of Chihuahua City, Mexico. The deposit was formed by hydrothermal processes within the fracture zone of welded silicic volcanic tuff. The ages of volcanic formations are between 35 to 44 m.y. and there was secondary silicification of most of the formations. After the formation of at least part of the uranium deposit, the ore body was uplifted above the water table and is presently exposed at the surface. Detailed petrographic characterization, electron microprobe backscatter electron (BSE) imagery, and selected x-ray maps for the samples from Nopal I high-grade ore document different uranium phases in the ore. There are at least two stages of uranium precipitation. A small amount of uraninite is encapsulated in silica. Hexavalent uranium may also have been a primary precipitant. The uranium phases were precipitated along cleavages of feldspars, and along fractures in the tuff. Energy dispersive spectrometer data and x-ray maps suggest that the major uranium phases are uranophane and weeksite. Substitutions of Ca and K occur in both phases, implying that conditions were variable during the mineralization/alteration process, and that compositions of the original minerals have a major influence on later stage alteration. Continued study is needed to fully characterize uranium behavior in these semi-arid to arid conditions

  3. Volcanic stratigraphy and U-Mo mineralization of the Sierra de Pena Blanca district, Chihuahua, Mexico

    International Nuclear Information System (INIS)

    The Sierra de Pena Blanca district encloses three economic deposits: El Nopal 1, Margaritas and Puerto 3; U-Mo mineralization is confined in the Tertiary volcanic sequence. Locally, this volcanic sequence rests on the Pozos conglomerate, which has predominant calcareous pebbles. Where the Pozos conglomerate was not deposited, the volcanic sequence rests on Albian-Cenomanian limestones. The recently updated Tertiary volcanic stratigraphy consists of a sequence of rhyolitic ash-flow tuffs divided into six simple cooling units interbedded with epiclastic conglomerates. Economic mineralization of El Nopal 1, Margaritas and Puerto 3 is confined to the Tertiary volcanic sequence, mainly in ash-flow tuff sheets of the Escuadra and Nopal Formations, and shows predominant stratigraphic control. The updated stratigraphic and structural characteristics of the deposits, the epithermal essence of mineralization and the lack of any identified intrusive rocks related to the ore fluid generation suggest that the source of this mineralization was not magmatic-hydrothermal. It is more likely to be derived from the diagenetic alteration and leaching of the volcanic glass by a geothermal convective groundwater system

  4. Desigualdades sociais e cobertura vacinal na cidade de Salvador, Bahia

    Directory of Open Access Journals (Sweden)

    Rita Barradas Barata

    2013-06-01

    Full Text Available Objetivo: Estimar as coberturas vacinais alcançadas em crianças nascidas na cidade de Salvador, analisando essas coberturas por condições socioeconômicas. Método: Foi realizado um inquérito domiciliar sobre cobertura vacinal, na cidade de Salvador, capital do Estado da Bahia, Nordeste do Brasil, sendo incluídas crianças nascidas em 2005, que no momento do estudo apresentavam 18 a 36 meses de idade. Foi realizada amostragem por conglomerados em múltiplas etapas. Os setores censitários foram estratificados utilizando-se dados do censo demográfico realizado em 2000. Foram coletados dados socioeconômicos dos domicílios. O tamanho da amostra foi definido a partir de metodologia específica para inquéritos de cobertura vacinal. O questionário foi aplicado tomando por base as informações constantes na caderneta de vacinação. Foi estimada a cobertura vacinal nos diversos estratos considerando o plano complexo de amostragem, ponderando as observações segundo a fração amostral, as perdas e o efeito do desenho. Resultados: Observou-se desigualdade socioeconômica nos diversos estratos, com um gradiente diretamente proporcional entre cobertura vacinal e nível socioeconômico. As diferenças mostram-se estatisticamente significantes entre os estratos D e E comparado ao estrato A. Em relação ao esquema completo, as crianças residentes nos estratos D e E apresentam cobertura significantemente menor que aquelas residentes no estrato B. Para vacinas não incluídas no esquema básico, as diferenças são muito acentuadas, sendo inferior a 3% nos estratos D e E. Conclusões: A cobertura vacinal pelo esquema completo ao final dos 18 meses de idade, com doses válidas, foi insatisfatória e foram observadas heterogeneidades entre os estratos socioeconômicos com pior cobertura nos grupos mais pobres.

  5. Ingestión de bebidas alcohólicas en conductores profesionales en la carretera de Vía Blanca (Cuba) Drink driving in professional drivers in the Vía Blanca highway in Cuba

    OpenAIRE

    Humberto Guanche Garcell; Tomás Suárez Enríquez; Francisco Gutiérrez García; Carlos Martínez Quesada; Ramón Mendoza Pérez

    2006-01-01

    Con el objetivo determinar la frecuencia de ingestión de bebidas alcohólicas en conductores profesionales (Vía Blanca, Ciudad de La Habana), realizamos un estudio observacional descriptivo de 832 conductores seleccionados mediante muestreo estratificado polietápico de los que, mediante entrevista estructurada, se registraron las variables de interés y a continuación se les realizó una medición de alcohol en aliento. La frecuencia de ingestión de bebidas alcohólicas fue del 8,18% (intervalo de...

  6. Dinámica e implicancia del aluvión de la laguna 513, Cordillera Blanca, Ancash, Perú Dinamics and implications of the laguna 513 Aluvion, Cordillera Blanca, Ancash Perú

    Directory of Open Access Journals (Sweden)

    Patricio Valderrama

    2012-09-01

    Full Text Available La Cordillera Blanca, al norte de Perú, es la zona con más actividad geodinámica externa en Perú. En ella ocurrieron grandes flujos de detritos de origen glaciar, varios de ellos fueron grandes desastres y cobraron miles de vidas. El 11 de abril del 2010, la laguna 513, ubicada en el centro de la Cordillera Blanca, sufrió un desembalse parcial por la caída de un gran bloque de hielo y rocas del nevado Hualcán (5500 m.s.n.m.. Este evento pese a ser de dimensiones considerables, no generó grandes pérdidas ni afectó alguna ciudad importante. Mediante simulaciones numéricas de flujo se estudió su dinámica, se determinó sus volúmenes y su turbulencia así como también explicamos e papel de la morfología de la zona en la desaceleración del flujo, su encausamiento en un valle fluvial y su posterior comportamiento como crecida de río. Las simulaciones realizadas mediante FLO2D se validan mediante comparaciones con imágenes de satélite post evento y datos de campo.The Cordillera Blanca in northern Peru is the most external geodynamics active areas in Perú. There have been occurred the biggest glacier source debris flow in the Peruvian history, most of them became on major disasters and claimed thousands of lives. On April 11th, 2010, the Laguna 513, located in the center of the Cordillera Blanca, suffered a partial GLOF due a massive rock and ice fall from Nevado Hualcán (5500 masl. This event, despite being of considerable size, did not generate large losses or affect any major city. Using numerical simulations we study the dynamics of the consequent GLOF and debris flow. We determined the volume and turbulence as well as also explained the role of the geomorphology of the area in the flow deceleration process and the river flood subsequent behavior. The FLO 2D simulations are validated with post event satellite image and field data.

  7. Molecular cloning, expression and immunological characterisation of Pas n 1, the major allergen of Bahia grass Paspalum notatum pollen.

    Science.gov (United States)

    Davies, Janet M; Mittag, Diana; Dang, Thanh D; Symons, Karen; Voskamp, Astrid; Rolland, Jennifer M; O'Hehir, Robyn E

    2008-12-01

    Bahia grass, Paspalum notatum, is a clinically important subtropical grass with a prolonged pollination season from spring to autumn. We aimed to clone and characterise the major Bahia grass pollen allergen, Pas n 1. Grass pollen-allergic patients presenting to a tertiary hospital allergy clinic were tested for IgE reactivity with Bahia grass pollen extract by skin prick testing, ImmunoCAP, ELISA and immunoblotting. Using primers deduced from the N-terminal peptide sequence of a group 1 allergen of Bahia grass pollen extract separated by two-dimensional gel electrophoresis, the complete Pas n 1 cDNA was obtained by rapid amplification of cDNA ends and cloned. Biological relevance of recombinant Pas n 1 expressed in Escherichia coli was assessed by serum IgE reactivity and basophil activation. Twenty-nine of 34 (85%) consecutive patients presenting with grass pollen allergy were skin prick test positive to Bahia grass pollen. The Pas n 1 cDNA has sequence homology with the beta-expansin 1 glycoprotein family and is more closely related to the maize pollen group 1 allergen (85% identity) than to ryegrass Lol p 1 or Timothy grass Phl p 1 (64 and 66% identity, respectively). rPas n 1 reacted with serum IgE in 47 of 55 (85%) Bahia grass pollen-allergic patients, activated basophils and inhibited serum IgE reactivity with the 29 kDa band of Bahia grass pollen extract. In conclusion the cDNA for the major group 1 allergen of the subtropical Bahia grass pollen, Pas n 1, was identified and cloned. rPas n 1 is immunologically active and is a valuable reagent for diagnosis and specific immunotherapy of grass pollen allergy. PMID:18817975

  8. Virtual Visit to the ATLAS Control Room by Federal Institute of Bahia in Simões Filho

    CERN Multimedia

    2014-01-01

    The students and teachers of the Federal Institute of Bahia - Campus Simões Filho - will watch a lecture by professor Eduardo Simas of the Fedetal University of Bahia starting at 13:00 of March 31st, 2014. The lecture will be followed by a virtual visit to the ATLAS experiment, at CERN, Switzerland for a short presentation of the detector by professor Denis Damazio followed by a Q&A session.

  9. Slope deformations in high-mountain regions as observed by InSAR: Examples from the Cordillera Blanca, Peru

    Science.gov (United States)

    Frey, Holger; Strozzi, Tazio; Caduff, Rafael; Huggel, Christian; Klimeš, Jan; Vilímek, Vít; Wiesmann, Andreas; Kääb, Andreas; Cochachin, Alejo; Plummer, Stephen

    2016-04-01

    Steep topography, the world's highest concentration of tropical glaciers, numerous glacial lakes and strong seismic activity combined with a densely populated valley bottom in the Rio Santa basin characterize the Cordillera Blanca in Peru. Besides glacier-related processes, a variety of landslide types and processes is present outside the glaciated areas, favoured by the steep terrain, geological conditions, sparse vegetation, intense precipitation, and strong seismicity. This combination of high hazard potentials and vulnerabilities results in a long list of natural disasters. Information on surface displacements is very valuable for early detection of emerging hazard potentials and their assessment. Interferometric processing of SAR data (InSAR) provides the possibility to remotely detect different types of surface displacement processes, also in remote locations where no other monitoring data are available. This contribution, developed under the ESA-funded S:GLA:MO project (sglamo.gamma-rs.ch), shows the potential of InSAR products for hazard assessments and glaciological investigations in high-mountain regions. We present a selection of different surface displacements as observed in the Cordillera Blanca based on InSAR data: a landslide zone near the Rampac Grande village, where in 2009 a landslide caused casualties and property loss; a landslide at the entry of the Santa Cruz Valley, northern Cordillera Blanca, where the displacement history could be reconstructed over five years; surface displacements at the interior moraine slopes surrounding Laguna Palcacocha, a major glacier lake above the city of Huaraz, which are compared to and complemented by geophysical investigations in the field; surface displacements at the moraine damming Laguna Safuna Alta, a glacier lake in the northern part of the Cordillera Blanca; glacier velocities across the entire Cordillera Blanca, revealing ice flow velocities of more than 200 m yr-1 at certain locations at the end of

  10. Origen y evolución de la manufactura en áreas no metropolitanas. El caso de Bahía Blanca en Argentina

    OpenAIRE

    Valentina Viego

    2007-01-01

    RESUMEN Bahía Blanca ha sido caracterizada en varios trabajos sobre geografía económica argentina como la principal ciudad del sur del país, en términos poblacionales y económicos. En particular, se ha destacado la preeminencia de su aparato industrial (históricamente orientado a la exportación) y el rol del tejido productivo como centro de abastecimiento de la mayoría de las localidades patagónicas. Esta función fue difundida en el lema “Bahía Blanca, puerta y puerto del sur argentino”, que...

  11. El fotoperiodo y su relación con la reproduccón del venado cola blanca (Odocoileus virginianus miquihuanensis) en el Altiplano Potosino.

    OpenAIRE

    Arenas Baéz, Pablo

    2011-01-01

    En México el venado cola blanca es la especie más importante en la actividad cinegética por su derrama económica, lo que ha motivado a manipular la reproducción de esta especie para garantizar su conservación y aprovechamiento sustentable en el territorio nacional. Por tal motivo se llevó a cabo la presente investigación con el objetivo de definir la época reproductiva del venado cola blanca (O. v. miquihuanensis) en el Altiplano Potosino, la calidad de semen, la relación del fotoperiodo en l...

  12. Epithermal uranium deposits in a volcanogenic context: the example of Nopal 1 deposit, Sierra de Pena Blanca, Mexico

    Science.gov (United States)

    Calas, G.; Angiboust, S.; Fayek, M.; Camacho, A.; Allard, T.; Agrinier, P.

    2009-12-01

    The Peña Blanca molybdenum-uranium field (Chihuahua, Mexico) exhibits over 100 airborne anomalies hosted in tertiary ignimbritic ash-flow tuffs (44 Ma) overlying the Pozos conglomerate and a sequence of Cretaceous carbonate rocks. Uranium occurrences are associated with breccia zones at the intersection of two or more fault systems. Periodic reactivation of these structures associated with Basin and Range and Rio Grande tectonic events resulted in the mobilization of U and other elements by meteoric fluids heated by geothermal activity. Trace element geochemistry (U, Th, REE) provides evidence for local mobilization of uranium under oxidizing conditions. In addition, O- and H-isotope geochemistry of kaolinite, smectite, opal and calcite suggests that argillic alteration proceeded at shallow depth with meteoric water at 25-75 °C. Focussed along breccia zones, fluids precipitated several generations of pyrite and uraninite together with kaolinite, as in the Nopal 1 mine, indicating that mineralization and hydrothermal alteration of volcanic tuffs are contemporaneous. Low δ34S values (~ -24.5 ‰) of pyrites intimately associated with uraninite suggest that the reducing conditions at the origin of the U-mineralization arise from biological activity. Later, the uplift of Sierra Pena Blanca resulted in oxidation and remobilization of uranium, as confirmed by the spatial distribution of radiation-induced defect centers in kaolinites. These data show that tectonism and biogenic reducing conditions can play a major role in the formation and remobilization of uranium in epithermal deposits. By comparison with the other uranium deposits at Sierra Pena Blanca and nearby Sierra de Gomez, Nopal 1 deposit is one of the few deposits having retained a reduced uranium mineralization.

  13. Constraining Subsurface Structure and Composition Using Seismic Refraction Surveys of Proglacial Valleys in the Cordillera Blanca, Peru

    Science.gov (United States)

    Glas, R. L.; Lautz, L.; McKenzie, J. M.; Mark, B. G.; Baker, E. A.; Aubry-Wake, C.; Somers, L. D.; Wigmore, O.

    2015-12-01

    As tropical glaciers rapidly recede in response to climate change, the storage and discharge of groundwater will play an increasing role in regulating river baseflow, particularly during the dry season, when stream flow is currently sustained predominantly by glacial melt. Little is understood regarding the hydrogeologic processes controlling base flow characteristics of low-gradient proglacial valleys of the Cordillera Blanca in Northwestern Peru, which has the world's highest density of tropical glaciers. To better understand the processes of groundwater storage and discharge in proglacial meadows, we completed seismic refraction surveys in three representative valleys of the Cordillera Blanca range: the Quilcayhuanca, Yanamarey, and Pachacoto valleys. The locations of survey transects were chosen based on locations of previous sediment core sampling, GPR lines, and quantification of groundwater-surface water interaction derived from dye and temperature tracing experiments. The seismic surveys consisted of 48 vertical component geophones with 2.5 m spacing. Across the three representative valleys a total of 15 surveys were conducted, covering a distance of 1800 m in cross, down, and oblique-valley directions. Preliminary interpretation of the seismic refraction data indicates a maximum imaging depth of 16 m below land surface, and a transition from glacio-lacustrine sediments to buried saturated talus at a depth of 6 m in the Quilcayhuanca valley. The organic-rich glacio-lacustrine sediments in the Yanamarey valley have seismic velocities ranging from 300 to 800 m/s and are >16 m in thickness at mid- valley. Weathered metasedimentary bedrock in the Pachacoto valley was imaged at ~5 m below the valley surface, exhibiting a p-wave velocity of 3400 m/s. The knowledge of hydrogeologic structure derived from seismic refraction surveys will provide crucial boundary conditions for future groundwater models of the valleys of the Cordillera Blanca.

  14. La mujer en el subsector del alojamiento: el caso de la Costa Blanca (Alicante, España)

    OpenAIRE

    Sigüenza, María Carmen

    2011-01-01

    El artículo se acerca, desde la perspectiva de género, al mercado laboral general, y al relacionado con el alojamiento en particular, en la Costa Blanca (España). Dentro de la empresa hotelera, se centra en su organigrama y la integración por género de los diferentes departamentos que lo componen; también se analizará la integración horizontal y vertical, teniendo en cuenta la posición de las mujeres en los puestos operativos, intermedios y directivos. Este artículo propone el estudio de una ...

  15. Curva de retención suelo-agua e inicio de monitoreo en Tierra Blanca Joven (TBJ)

    OpenAIRE

    José A. Chávez; Reynaldo López; Lubomir Kopecky; José Landaverde

    2013-01-01

    En El Salvador durante la época de lluvias o cuando ocurren terremotos, las áreas cubiertas por las tefras volcánicas Tierra Blanca Joven (TBJ) sufren movimientos de ladera, licuefacción y erosión provocando pérdidas ambientales, sociales y económicas importantes. Para iniciar la caracterización de estos suelos parcialmente saturados, valores de succión de una unidad de caída de TBJ fueron obtenidos con la olla de presión, centrífuga y papel filtro para construir la Curva de Retención Suelo-A...

  16. Estudio histológico del sistema digestivo en diferentes estadios de desarrollo de la cachama blanca (Piaractus brachypomus)

    OpenAIRE

    Miguel Ángel Mendoza R.; Jair Comas Corredor; Clara Stefany Romero Hurtado

    2013-01-01

    La cachama blanca (Piaractus brachypomus) es la segunda fuente de producción piscícola en Colombia, después de la tilapia roja (Oreochomi ssp.) y antes de la trucha arcoíris (Oncorhynchus mykiss). Se destaca, además, como una de las especies con mayor potencial productivo en el país. Se realizó el estudio histológico del sistema digestivo de la Piaractus brachypomus a fin determinar la morfología normal en diferentes estadios de desarrollo. Para ello se clasificaron los animales según la edad...

  17. Manejo de la pudrición blanca (sclerotium cepivorum berk.) del ajo en Guanajuato, México

    OpenAIRE

    Felipe Delgadillo Sánchez; Emma Zavaleta Mejía; Arturo Aguilar Laguna; Alfredo Arévalo Valenzuela; Irineo Torres Pacheco; Ramón Valdivia Alcalá; José Antonio Garzón Tiznado

    2004-01-01

    Se determinó el efecto de la aplicación separada o combinada del aceite sintético de ajo, la solarización y el uso del fungicida tebuconazole sobre la densidad de poblaciones naturales de esclerocios de Sclerotium cepivorum Berk., para reducir la incidencia de la pudrición blanca e incrementar el rendimiento del ajo (Allium sativum L.) cv. Probajío. La investigación se realizó en tres fases, en Cortazar, Guanajuato, México, durante el período de noviembre de 1995 a mayo de 1997; en la primera...

  18. Evaluación de recursos hídricos de las sierras Blanca y Mijas (Málaga

    Directory of Open Access Journals (Sweden)

    Vadillo, I.

    1997-04-01

    Full Text Available A water balance of Sierras Blanca and Mijas Hydrogeological Unit, the most important aquifer in the Costa del Sol, in the period 1990/91-1993/94, has been made. The recharge is produced by the infiltration of rain water with a total amount of 116.9 hmhm3/year/year: 60.2 hm3/year has been evapotranspirated, 56.7 hm3/year belongs to the useful rain (8 hm3/year as streamflow and 48.7 hm /year as infiltration. The discharge have been measured and gives a total amount of 62.2 hm3/year: 28.2 hm3/year by the springs and 34 hm3/year by the pumpings. The useful rain has been calculated with several methods (Turc, Coutagne, Kessler, chloride method and monthly and daily Thornwaite method -with field capacities of 25 and 50 mm-. The method that fits in a better way with the known volumes of recharge and discharge, for each one of the aquifer system and for the whole Blanca-Mijas Hydrogeological Unit, is the chloride method.Se ha realizado el balance de la Unidad Hidrogeológica Sierra Blanca-Sierra de Mijas, la más importante de la Costa del Sol, para la media del período 1990/911993/ 94. La precipitación media sobre la Unidad es de 116,9 hm3/año: 60,2 hm3/año se evapotranspiran y 56,7 hm3/año constituyen la lluvia útil (8 hm3/año de escorrentía y 48,7 hm3/año de infiltración eficaz. Las salidas controlables ascienden a 62,2 hm3/año: 28,2 hm3/año se descargan por manantiales y 34 hm3/año por bombeos. La lluvia útil se ha calculado mediante varios métodos (Turc, Coutagne, Kessler, balance de cloruros, Thornwhite diario y mensual -con capacidades de campo de 25 y 50 mm-. El método que más se adapta a los volúmenes conocidos de entradas y salidas, para cada uno de los sistemas acuíferos y para la Unidad Hidrogeológica BlancaMijas en su conjunto, es el balance de cloruros.

  19. Re-thinking the use of drawing for documentation and conservation: reflections on the Spanish town of Blanca.

    Directory of Open Access Journals (Sweden)

    Emanuela Chiavoni

    2012-11-01

    Full Text Available To know and to document a city it is necessary  to carry out a careful analysis  of the urban  reality which is a complex phenomenon because it is characterized by the superimposition of architecture and green areas, buildings and empty spaces permeating each other. The drawing of a city including all its important features enables us to really know it. To understand the exterior or interior aspects inside the different architectonic compositions also requires great sensibility. In this paper I’ll illustrate the watercolour  drawings of the city of Blanca in Spain, which were executed  in a Representation Seminar.

  20. DISTRIBUCIÓN DE LA ESCAMA BLANCA DEL MANGO AULACASPIS TUBERCULARIS NEWSTEAD (HEMIPTERA: DIASPIDIDAE) EN NAYARIT, MÉXICO

    OpenAIRE

    Nadia Carolina GARCÍA-ÁLVAREZ; Mario Alfonso URÍAS-LÓPEZ; Luis Martín HERNÁNDEZ-FUENTES; Jesús Ascensión GONZÁLEZ-CARRILLO; María Hilda PÉREZ-BARRAZA; Jorge Alberto OSUNA-GARCÍA

    2014-01-01

    El mango es el frutal más importante que se produce en Nayarit. Es atacado por la escama blanca Aulacaspis tubercularis Newstead (EBM), que puede producir pérdidas de hasta 50% de frutos cuando no se le controla. Debido a que se requiere un conocimiento de la presencia de la plaga para fines de manejo, el objetivo de este trabajo fue determinar la distribución geográfica e intensidad de infestación de la escama en Nayarit, con relación a diferentes alturas sobre el nivel del mar, a las dos pr...

  1. Densidad poblacional del venado cola blanca (Odocoileus virginianus) en sabana inindable de Paz De Ariporo (Casanare), Orinoquia colombiana

    OpenAIRE

    Montenegro Olga Lucía; Pérez Moreno Heidi Yohana

    2006-01-01

    Esta investigación buscó estimar y analizar las diferencias en la densidad poblacional del venado cola blanca
    (Odocoileus virginianus) en dos hatos de la Orinoquia colombiana, con miras a aportar elementos para su manejo
    sostenible en la región. Para la estimación de densidad se realizaron conteos de individuos y grupos en transectos
    lineales de ancho variable acumulando 54,3 km y 48,65 km en los hatos Taparas y Miramar respectivamente.
    Estos recorr...

  2. Stratigraphy of the PB-1 well, Nopal I uranium deposit, Sierra Pena Blanca, Chihuahua, Mexico

    International Nuclear Information System (INIS)

    The Nopal I site in the Pena Blanca uranium district has a number of geologic and hydrologic similarities to the proposed high-level radioactive waste repository at Yucca Mountain, making it a useful analogue to evaluate process models for radionuclide transport. The PB-1 well was drilled in 2003 at the Nopal I uranium deposit as part of a DOE-sponsored natural analogue study to constrain processes affecting radionuclide transport. The well penetrates through the Tertiary volcanic section down to Cretaceous limestone and intersects the regional aquifer system. The well, drilled along the margin of the Nopal I ore body, was continuously cored to a depth of 250 m, thus providing an opportunity to document the local stratigraphy. Detailed observations of these units were afforded through petrographic description and rock-property measurements of the core, together with geophysical logs of the well. The uppermost unit encountered in the PB-1 well is the Nopal Formation, a densely welded, crystal-rich, rhyolitic ash-flow tuff. This cored section is highly altered and devitrified, with kaolinite, quartz, chlorite, and montmorillonite replacing feldspars and much of the groundmass. Breccia zones within the tuff contain fracture fillings of hematite, limonite, goethite, jarosite, and opal. A zone of intense clay alteration encountered in the depth interval 17.45-22.30 m was interpreted to represent the basal vitrophyre of this unit. Underlying the Nopal Formation is the Coloradas Formation, which consists of a welded lithic-rich rhyolitic ash-flow tuff. The cored section of this unit has undergone devitrification and oxidation, and has a similar alteration mineralogy to that observed in the Nopal tuff. A sharp contact between the Coloradas tuff and the underlying Pozos Formation was observed at a depth of 136.38 m. The Pozos Formation consists of poorly sorted conglomerate containing clasts of subangular to subrounded fragments of volcanic rocks, limestone, and chert

  3. Stratigraphy of the PB-1 well, Nopal I uranium deposit, Sierra Pena Blanca, Chihuahua, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Dobson, P.; Fayek, M.; Goodell, P.; Ghezzehei, T.; Melchor, F.; Murrell, M.; Oliver, R.; Reyes-Cortes, I.A.; de la Garza, R.; Simmons, A.

    2008-08-01

    The Nopal I site in the Pena Blanca uranium district has a number of geologic and hydrologic similarities to the proposed high-level radioactive waste repository at Yucca Mountain, making it a useful analogue to evaluate process models for radionuclide transport. The PB-1 well was drilled in 2003 at the Nopal I uranium deposit as part of a DOE-sponsored natural analogue study to constrain processes affecting radionuclide transport. The well penetrates through the Tertiary volcanic section down to Cretaceous limestone and intersects the regional aquifer system. The well, drilled along the margin of the Nopal I ore body, was continuously cored to a depth of 250 m, thus providing an opportunity to document the local stratigraphy. Detailed observations of these units were afforded through petrographic description and rock-property measurements of the core, together with geophysical logs of the well. The uppermost unit encountered in the PB-1 well is the Nopal Formation, a densely welded, crystal-rich, rhyolitic ash-flow tuff. This cored section is highly altered and devitrified, with kaolinite, quartz, chlorite, and montmorillonite replacing feldspars and much of the groundmass. Breccia zones within the tuff contain fracture fillings of hematite, limonite, goethite, jarosite, and opal. A zone of intense clay alteration encountered in the depth interval 17.45-22.30 m was interpreted to represent the basal vitrophyre of this unit. Underlying the Nopal Formation is the Coloradas Formation, which consists of a welded lithic-rich rhyolitic ash-flow tuff. The cored section of this unit has undergone devitrification and oxidation, and has a similar alteration mineralogy to that observed in the Nopal tuff. A sharp contact between the Coloradas tuff and the underlying Pozos Formation was observed at a depth of 136.38 m. The Pozos Formation consists of poorly sorted conglomerate containing clasts of subangular to subrounded fragments of volcanic rocks, limestone, and chert

  4. The Half-Graben Structure of Bahia de Banderas, Mexico

    Science.gov (United States)

    Alvarez, R.

    2007-05-01

    Bahia de Banderas contains important records of the detachment and initial separation of Baja California from mainland Mexico; however, its relief and structure are poorly known. The structure has been identified with a canyon associated with a fault striking E-W, named Banderas fault; it has also been proposed that the canyon may be a graben but no structural model was presented. To help in the description of its relief, a digital elevation model of the bay is constructed with individual soundings, ships soundings from 1970 to date, and satellite- derived depths, which shows an irregular topography of the canyon along the fault. The deepest portion of the bay reaches 1600 m; the south flank of the canyon dips at angles ranging from 15° to 22°, while the north flank ranges from 5° to 9°. This asymmetry between the flanks first suggested that the structure of the canyon might be that of a half-graben. A model is presented based on previous developments for half-graben structures of the fault growth type with reverse drag geometry; the model is based on the lengthening of the fault through seismically induced slip events; a seismic study of the area reported elsewhere complements the model and shows that the region is active. For Banderas canyon the footwall corresponds to the south flank, and the hanging wall corresponds to the north flank, including the shallow platform to the north of the bay. A fault length of 63 km is inferred and pertinent parameters are derived for the model calculations. Theoretical profiles are superposed and compared to actual topographic profiles of the canyon, concluding that the model describes well the central part of the structure, within 14 km of its mid-point in either direction, reproducing with less accuracy the geometries at the ends of the active portion of the fault, which is attributed to the perturbing effects of additional faults acting on those regions. The model allows for calculations of the age of the half

  5. ENSO influence on surface energy and mass balance at Shallap Glacier, Cordillera Blanca, Peru

    Science.gov (United States)

    Maussion, F.; Gurgiser, W.; Großhauser, M.; Kaser, G.; Marzeion, B.

    2015-08-01

    The El Niño/Southern Oscillation (ENSO) is a major driver of climate variability in the tropical Andes, where recent Niño and Niña events left an observable footprint on glacier mass balance. The nature and strength of the relationship between ENSO and glacier mass balance, however, varies between regions and time periods, leaving several unanswered questions about its exact mechanisms. The starting point of this study is a 4-year long time series of distributed surface energy and mass balance (SEB/SMB) calculated using a process-based model driven by observations at Shallap Glacier (Cordillera Blanca, Peru). These data are used to calibrate a regression-based downscaling model that links the local SEB/SMB fluxes to atmospheric reanalysis variables on a monthly basis, allowing an unprecedented quantification of the ENSO influence on the SEB/SMB at climatological time scales (1980-2013, ERA-Interim period). We find a stronger and steadier anti-correlation between Pacific sea-surface temperature (SST) and glacier mass balance than previously reported. This relationship is most pronounced during the wet season (December-May) and at low altitudes where Niño (Niña) events are accompanied with a snowfall deficit (excess) and a higher (lower) radiation energy input. We detect a weaker but significant ENSO anti-correlation with total precipitation (Niño dry signal) and positive correlation with the sensible heat flux, but find no ENSO influence on sublimation. Sensitivity analyses comparing several downscaling methods and reanalysis data sets resulted in stable mass balance correlations with Pacific SST but also revealed large uncertainties in computing the mass balance trend of the last decades. The newly introduced open-source downscaling tool can be applied easily to other glaciers in the tropics, opening new research possibilities on even longer time scales.

  6. Geochronology and Fluid-Rock Interaction Associated with the Nopal I Uranium Deposit, Pena Blanca, Mexico

    International Nuclear Information System (INIS)

    The Nopal I uranium (U) deposit, Pena Blanca District, Mexico, largely consists of secondary U6+ minerals, which occur within a breccia pipe mainly hosted by the 44 Ma Nopal and Colorados volcanic formations. These two units overly the Pozos conglomerate formation and Cretaceous limestone. Three new vertical diamond drill holes (DDHs) were recently drilled at Nopal I. DDH-PB1 with continuous core was drilled through the Nopal I deposit and two additional DDHs were drilled ∼50 m on either side of the cored hole. These DDHs terminate 20 m below the current water table, thus allowing the detection of possible gradients in radionuclide contents resulting from transport from the overlying uranium deposit. Primary uraninite within the main ore body is rare and fine-grained (∼50 micrometers), thus making geochronology of the Nopal I deposit very difficult. Uranium, lead and oxygen isotopes can be used to study fluid-uraninite interaction, provided that the analyses are obtained on the micro-scale. Secondary ionization mass spectrometry (SIMS) permits in situ measurement of isotopic ratios with a spatial resolution on the scale of a few (micro)m. Preliminary U-Pb results show that uraninite from the main ore body gives an age of 32 ± 8 Ma, whereas uraninite from the uraniferous Pozos conglomerate that lies nearly 100 m below the main ore body and 25 meters above the water table, gives a U-Pb age that is 18O = -10.8(perthousand), whereas the uraninite within the Pozos conglomerate has a (delta)18O = +1.5(perthousand). If it is assumed that both uraninites precipitated from meteoric water ((delta)18O = -7(perthousand)), then calculated precipitation temperatures are 55 C for the uraninite from the ore body and 20 C for uraninite hosted by the Pozos conglomerate. These temperatures are consistent with previous studies that calculated precipitation temperatures for clay minerals associated with uraninite

  7. Improved cryopreservation protocol for Blanca-Celtibérica buck semen collected by electroejaculation.

    Science.gov (United States)

    Jiménez-Rabadán, Pilar; Ramón, Manuel; García-Álvarez, Olga; Maroto-Morales, Alejandro; Alvaro-García, Pablo J; Del Olmo, Enrique; Pérez-Guzmán, M Dolores; Fernández-Santos, M Rocio; Julián Garde, J; Soler, Ana J

    2013-12-01

    The collection of sperm samples by electroejaculation (EE) leads to an increase of the production of seminal plasma which could modify the tolerance of spermatozoa to the cryopreservation procedure. This study aims to compare a standard sperm cryopreservation protocol for samples collected by artificial vagina (AV) with the same protocol and modifications to this for samples obtained by EE. Semen from six males of Blanca-Celtibérica goat breed was collected by AV (control) and EE, and three experiments were conducted. In Experiment 1, it was examined the effects of egg yolk concentration contained in freezing extender (0%, 1.5%, 10% and 20% of egg yolk); in Experiment 2, it was evaluated the cooling rate from 30 to 5 °C (fast: 10 min and slow: 90 min) and the temperature of glycerol addition (30 and 5 °C); and in Experiment 3, it was examined the time of equilibration at 5 °C (0, 1, 2 or 3h). A heterologous in vitro fertilization test was carried out in order to compare the fertility of control samples with that resulting from the EE protocol which showed the highest sperm quality. Results showed greater sperm motility parameters after thawing for control samples cryopreserved in standard conditions in the three experiments. For samples collected by EE, extender with 20% egg yolk, a slow cooling rate and a longer equilibration time (3h) provided higher sperm quality, and no differences were observed between temperatures of glycerol addition. Samples collected by EE and cryopreserved with the protocol which yielded the best sperm quality after thawing showed higher fertility compared to AV. PMID:23958413

  8. Infrared Imaging and Modeling of Proglacial Stream Temperature in the Cordillera Blanca, Peru

    Science.gov (United States)

    Baker, E. A.; Lautz, L.; McKenzie, J. M.; Aubry-Wake, C.; Somers, L. D.; Wigmore, O.; Glose, A.; Glas, R. L.; Mark, B. G.

    2015-12-01

    In the tropical Andes, glacial meltwater is an important water resource for downstream communities, especially during the dry season. Due to climate change, glacial retreat is accelerating and straining already limited water resources in the region. It is hypothesized that groundwater storage and discharge will play a critical role in sustaining future river flows. To improve our understanding of the hydrologic fluxes in proglacial valleys of the tropical Andes, we monitored a ~1.2 km reach of the Quilcayhuanca River, in the Cordillera Blanca, Peru, using a high resolution infrared (IR) camera and in-stream temperature sensors. We positioned the IR camera on the southern valley wall, 96 m above the valley floor, and collected >700 IR images at 10 minute intervals over 5 days. We deployed 40 temperature sensors along the stream at ~25 m intervals and 10 sensors at additional control points throughout the surrounding valley, recording temperature at 10 minute intervals. Groundwater temperature was recorded in 6 wells in the study area. The reach had diurnal temperature fluctuations from ~4 to 13°C, but did not exhibit large longitudinal temperature differences. Stream temperature profiles within the water column show stream water is well mixed, improving the ability of the IR camera to accurately observe the stream temperature at this research site. Temperature sensors in 4 reach tributaries recorded warmer temperatures than the main channel. The daily temperatures of one tributary fluctuated within the range of the groundwater temperature (~9 to 11°C), while another tributary exhibited a range of ~18°C. A weather station in the study area recorded climate data (air temperature, humidity, wind speed, solar radiation) at 10 minute intervals. We used this field data as input for a spatial and temporal energy balance model of the reach. Our model demonstrates the utility of IR imagery to monitor stream temperatures and improves our understanding of energy fluxes in

  9. La casa y la mesa de la reina Blanca de Navarra (1433

    Directory of Open Access Journals (Sweden)

    Serrano Larrayoz, Fernando

    2000-06-01

    Full Text Available This study tries to amplify a subject not developed enough, for the moment, in the lines of historical research that are being carried out in Navarre. It is divided in two sections. On one hand, aspects as servants, provision, products and prices, among others, have been studied through the organisation in queen Blanca's Hostel. On the other hand, we have approached the symbolic factor that feeding implies. We have also studied questions relating to crockery, feeding paces, religious aspects and beneficiaries from food. At last, in spite of having few and dispersed data, we have tried to give a view about culinary practises in the navarresse court during the first half of the 15th century.[fr] L'étude envisage l'approfondisement d'un sujet jusqu'au présent peu développé, dans les lignes de recherche historique prioritaires en Navarre. Le travail est divisé en deux sections. D'une part, l'organisation de l'Hôtel de la reine Blanche, dont on a analise les serviteurs, les fourniseurs, les produits et les prix, parmis d'autres aspects de l'institution. De l'autre, on s'est approché à l'élément symbolique que la nourriture implique, en touchant des matières comme les vaisselles, les rythmes alimentaires, les aspects religieux et les bénéficiaires des aliments. Enfin, malgré les rares sources disponibles, on a cherché à donner aussi une vision générale des pratiques culinaires de la Cour navarraise au XVᵉ siècle.

  10. Basic diagnosis of solid waste generated at Agua Blanca State Park to propose waste management strategies.

    Science.gov (United States)

    Laines Canepa, José Ramón; Zequeira Larios, Carolina; Valadez Treviño, Maria Elena Macías; Garduza Sánchez, Diana Ivett

    2012-03-01

    State parks are highly sensitive areas of great natural importance and tourism value. Herein a case study involving a basic survey of solid waste which was carried out in 2006 in Agua Blanca State Park, Macuspana, Tabasco, Mexico with two sampling periods representing the high and low tourist season is presented. The survey had five objectives: to find out the number of visitors in the different seasons, to consider the daily generation of solid waste from tourist activities, to determine bulk density, to select and quantify sub-products; and to suggest a possible treatment. A daily average of 368 people visited the park: 18,862 people in 14 days during the high season holiday (in just one day, Easter Sunday, up to 4425 visitors) and 2092 visitors in 43 days during the low season. The average weight of the generated solid waste was 61.267 kg day(-1) and the generated solid waste average per person was 0.155 kg person(-1 ) day(-1). During the high season, the average increased to 0.188 kg person(-1 ) day(-1) and during the low season, the average decreased to 0.144 kg person(-1 ) day(-1). The bulk density average was 75.014 kg m(-3), the maximum value was 92.472 kg m(-3) and the minimum was 68.274 kg m(-3). The sub-products comprised 54.52% inorganic matter; 32.03% organic matter, 10.60% non-recyclable and 2.85% others. Based on these results, waste management strategies such as reuse/recycling, aerobic and anaerobic digestion, the construction of a manual landfill and the employment of a specialist firm were suggested. PMID:21945990

  11. Estructura de la margen norte del Río Grande, Bardas Blancas, provincia de Mendoza

    Directory of Open Access Journals (Sweden)

    D.J. Dicarlo

    2007-06-01

    Full Text Available La estructura de Bardas Blancas comprende una región sobreelevada tanto topográfica como estructuralmente, conformada principalmente por estructuras braquianticlinales. Afloran en su núcleo rocas del Grupo Choiyoi y hacia los flancos depósitos sedimentarios jurásicos. El área se encuentra en un frente orogénico no emergente caracterizado por el dominio de zonas de plegamiento, fallas ciegas y el desarrollo de una zona triangular. El estudio de estas estructuras con información de subsuelo y superficie permitió el desarrollo de una sección estructural balanceada basada en el modelo de trishear. La sección se basa en el levantamiento de la estructura a partir del desarrollo de fallas de corrimiento de bajo ángulo con vergencia al este despegadas dentro del basamento. El avance de los bloques de basamento habría transmitido parte del acortamiento a la cubierta sedimentaria formándose la zona triangular de Cerro Doña Juana hacia el este. Dentro de la zona triangular se desarrolla un sistema de duplex de techo pasivo generado a partir de un nivel de despegue inferior y otro superior o retrocorrimiento. El retrocorrimiento y los Grupos Rayoso y Neuquén se encuentran volcados, producto del arrastre originado por un corrimiento de vergencia oriental. Hacia el este del retrocorrimiento las secuencias cretácicas superior y terciarias se encuentran desacopladas estructuralmente del Grupo Mendoza.

  12. Estuary wader capacity following severe weather mortality

    International Nuclear Information System (INIS)

    The building of a tidal power barrage across an estuary may lead to substantial changes in its ecology. Many of Britain's estuaries hold internationally important numbers of waders. Careful consideration, therefore, needs to be given to the likely effects of tidal power barrages on wader populations. The opportunity for increased understanding of the mechanisms which govern wader populations was provided by a period of severe winter weather in 1991, which resulted in a substantial mortality of waders in eastern England. Such conditions are known to be stressful to birds and the study objectives were to investigate both the effects of and recovery from severe weather. (author)

  13. Wind power system for Sao Gabriel, Irece region, Bahia-Brazil; Sistema eolico de Sao Gabriel, regiao de Irece-Bahia

    Energy Technology Data Exchange (ETDEWEB)

    Bruni, Carlos D' Alexandria [Centro Federal de Educacao Tecnologica da Bahia (CEFET-BA), Salvador, BA (Brazil)], e-mail: carlosbruni@cefetba.br; Camelier, Luiz Alberto A. [Companhia de Engenharia Rural da Bahia, Salvador, BA (Brazil)], e-mail: lcamelier@ig.com.br

    2004-07-01

    An electric power plant supplied by a wind-generator is the solution for supply drink water on a small community on Sao Gabriel, Irece - Bahia -Brazil. On behalf of the feasibility a wind power system is described in detail concerning it's technical specifications, it's operation, constraints and it's energy demand. Furthermore wind power system supply is described in detail. Simulations is shows how the system is designed to guarantee a reliability in pumping of drinking water powered by wind power system and it's expansion in the future. (author)

  14. Tuberculose na cidade de Salvador, Bahia, Brasil: o perfil na década de 1990 Tuberculosis in Salvador, Bahia, Brazil, in the 1990s

    Directory of Open Access Journals (Sweden)

    Maria Izabel Mota Xavier

    2007-02-01

    Full Text Available Com o objetivo de caracterizar o perfil epidemiológico da tuberculose (incidência e mortalidade no Município de Salvador, Bahia, Brasil, na década de 1990, foram analisadas as características demográficas, clínicas e laboratoriais dos casos e óbitos por esta doença ocorridos no período. Foram calculadas as taxas médias anuais de mortalidade e da incidência por sexo, faixa etária e formas clínicas da doença com base nas informações dos bancos de dados do Sistema de Informações de Tuberculose da Secretaria de Saúde do Estado da Bahia e do Sistema de Informações de Mortalidade do Ministério da Saúde. Analisou-se a distribuição espacial da tuberculose segundo distritos sanitários. Ficou evidente o predomínio dos casos e óbitos no sexo masculino e na faixa etária de 15 a 39 anos. A forma pulmonar apresentou uma maior taxa de incidência e de mortalidade. Sobre a hipótese de que, a co-infecção AIDS/tuberculose possa contribuir para manter elevadas taxas de mortalidade, os dados existentes não corroboram para esta associação. A maior ocorrência de tuberculose em determinados distritos sanitários pode estar associada à densidade populacional e às condições desfavoráveis de vida.The characteristics of tuberculosis (TB cases and deaths were analyzed in order to characterize the epidemiological profile of TB (incidence and mortality in Salvador, Bahia, Brazil, in the 1990s. Annual incidence and mortality rates were calculated by gender, age bracket, and clinical forms of the disease using databases from the Tuberculosis Information System of the Bahia State Health Secretariat and the Mortality Information System of the Brazilian Ministry of Health. TB spatial distribution was analyzed according to health district. Cases and deaths were predominantly in males in the 15 to 39 year group. The pulmonary form showed the highest incidence and mortality. The existing data did not corroborate the hypothesis that AIDS

  15. Fitonematóides associados à gravioleira (Annona muricata no sul da Bahia Phytonematodes associated to soursop tree (Aannona muricata in the south of Bahia

    Directory of Open Access Journals (Sweden)

    Arlete Silveira

    2008-09-01

    Full Text Available Nematóides têm sido reportados, em alguns Estados do Brasil, causando danos à gravioleira (Annona muricata L.. No sul da Bahia, o cultivo da graviola é bastante recente; portanto, há carência de informações sobre os problemas fitossanitários. O presente estudo teve como objetivo o levantamento dos fitonematóides associados a gravioleiras dos municípios de Una e Ilhéus, sul da Bahia (BA. Subamostras de solo e raízes de 10 diferentes plantas foram coletadas, ao acaso, e misturadas para formar uma amostra composta representativa de cada pomar. As análises nematológicas foram realizadas nos Laboratórios de Fitopatologia e Nematologia da Universidade Estadual de Santa Cruz (UESC, Ilhéus-BA, e Universidade Federal de Viçosa (UFV, Viçosa-MG. Os nematóides encontrados associados à gravioleira foram: Aphelenchoides sp., Aphelenchus sp., Helicotylenchus sp., Mesocriconema sp., Rotylenchus sp., Rotylenchulus sp. e Tylenchus sp. Futuramente, serão conduzidos estudos para avaliar a patogenicidade desses nematóides à gravioleira.Nematodes have been reported in some States of Brazil causing damage to soursop (Annona muricata L.. In the South of Bahia, the soursop growing is very recent; therefore there is a lack of information regarding its phytosanitary problems. The present study aimed the survey of plant nematodes associated with soursop in the municipal district of Una and Ilhéus, South of Bahia (BA. Soil and root subsamples from 10 distinct soursop plants were randomly collected and mixed to form a representative composite sample of each orchard. The nematodes analyses were carried out in the Laboratories of Plant Pathology and Nematology of the University of Ilhéus, BA (UESC and Viçosa, MG (UFV. The nematodes found associated with soursop were: Aphelenchoides sp., Aphelenchus sp., Helicotylenchus spp., Mesocriconema spp., Rotylenchus sp., Rotylenchulus sp. and Tylenchus sp. Future studies will be conducted to evaluate the

  16. Estuary fish data - Juvenile salmon in migratory corridors of lower Columbia River estuary

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Sampling juvenile salmon and associated fishes in open waters of the lower Columbia River estuary. Field work includes bi-weekly sampling during the spring...

  17. PECONIC ESTUARY: AN ASSESSMENT OF SHELLFISH RESOURCES IN THE TRIBUTARIES AND EMBAYMENTS OF THE PECONIC ESTUARY

    Science.gov (United States)

    Executive Summary Historically, the Peconic Estuary's shellfish resources have supported significant fisheries for a number of species including hard clams, oysters and bay scallops. However, distribution and abundance data for the tributaries and embayments within the Peconic Es...

  18. The occurrence of Callinectes arcuatus ordway, 1863 (Crustacea, Decapoda, Portunidae in Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Edilson Pires de Gouvêa

    1987-01-01

    Full Text Available During the study of the Carcinofauna of the Bahian Coast, some Brachyura Portunidae were found. Some of these animals were Callinectes arcuatus Ordway, 1863 which has its distribution restricted to the Pacific Ocean, from California to Peru and the Galapagos Islands. This is the first occurrence of this species reported from the Atlantic Ocean and the Brazilian Coast (Bahia, 38º50'Wand 12º50'S.Durante o estudo da carcinofauna do litoral baiano, muitos Braquiuros Portunidae foram encontrados. Alguns destes animais foram Callinectes arcuatus Ordway, 1863 que possuia sua distribuição restrita da Califórnia ao Peru e Ilhas Galápagos, no Oceano Pacífico. Esta é a primeira ocorrência desta espécie no Oceano Atlântico e na Costa Brasileira. (Bahia, 12º50'S e 38º50'W.

  19. Industrial radiography in the State of Bahia, Brazil The health protection of workers

    CERN Document Server

    Andrade, A E O D

    1997-01-01

    This study aimed to identify the Regulatory and Inspection Authority for actions developed by industrial radiography enterprises in the State of Bahia, Brazil, concerning health protection of workers exposed to ionizing radiation in industry. Institutions which legislate about this matter at international, national and State level were identified. These legislations were analysed according to recommendations by the Basic Safety Standards from the Atomic Energy International Agency. Medical Supervision is proposed as a factor to warrant protection to worker's health. This is a service evaluation study, encompassing results, processes and structural components. Emphasis is given to the process component which investigated the adequacy of which is performed by employees and workers. Five enterprises which provide industrial radiography services in the State of Bahia were identified, employing forty workers on a temporary basis. This study also observed: intense workforce, a complete process of contracting out in...

  20. Geophysical studies of ilmenite and monazite placers in Itaparica island - Bahia State

    International Nuclear Information System (INIS)

    A ground scintillometric survey along the southern shores of the island of Itaparica, Bahia, Brazil, discovered numerous anomalies. Detailed geophysical and sedimentological studies proved that the major anomaly is due to an ilmenite placer deposit. A comparison of the field geophysical measurements (ground scintillometry, magnetics and induced polarization) with the laboratory samples suggests the following: i) Ground scintillometry is suitable for locating and delineating such placer deposits. ii) Induced polarization is useful to investigate the deposit at depth. iii) Magnetic surveys were not particularly useful in spite of the high ilmenite concentration, thus they do not appear to be a helpful survey tool in this case. A more extensive prospecting program in the Brazilian coastal areas particularly in the State of Bahia are also proposed. (author)

  1. Cerambycidae (Coleoptera from Lagoa do Tamburí farm, Aracatu – Bahia, with new records

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    ANDRÉ DA SILVA FERREIRA

    2015-01-01

    Full Text Available ABSTRACTSpecies of Cerambycidae were inventoried in an area of Caatinga (dryland vegetation in the municipality of Aracatu, Bahia State, Brazil, between August/2012 and July/2013. The insects were collected using light traps, active searches, and white cloth trapping. A total of 716 specimens of Cerambycidae were collected; 665 of them were identified as belonging to 107 species, 84 genera, 30 tribes, and 3 subfamilies. The speciesPhaedinus carbonelli Monné, 1999,Lepturges (Lepturges fasciculatoides Gilmour, 1962,Hoplistonychus bondari Melzer, 1930,Ataxia arenaria Martins & Galileo, 2013 were new records for Bahia;Nesozineus obscurus Hoffmann, 1984 is new record for Brazil. The subfamily Cerambycinae demonstrated the greatest richness, with 56 species. These results contribute to our knowledge of the Cerambycidae fauna of Brazil.

  2. Geochemical evaluation of marginal basins in the south of Bahia state, Brazil

    International Nuclear Information System (INIS)

    Geochemical analyses were performed on more than 700 rock samples and 4 oil samples, from Mucuri, Cumuruxatiba and Jequitinhonha basins, offshore Bahia state, Brazil. The methods employed in this study includes the evaluation of organic carbon contents, Rock-Eval pyrolysis, vitrinite reflectance, carbon isotopes, assessment of oils and extrats by liquid and gas chromatography and gas chromatography - spectrometry. Three main source rock systems have been identified in offshore Bahia: the Mucuri shales from Rio da Serra and Aratu Stages lower Neocomian related to a lacustrine fresh water environment; the Jiquia shales (Upper Neocomian) deposited in a lacustrine saline water environment, and the Alagoas Shales related to an evaporitic environment of Aptian age. (author)

  3. Butterflies (Lepidoptera: Papilionoidea and Hesperioidea from Serra da Jibóia, Bahia State, Brazil

    Directory of Open Access Journals (Sweden)

    Thamara Zacca

    2011-12-01

    Resumo. Uma lista das espécies de borboletas da Serra da Jibóia, um maciço montanhoso no Recôncavo baiano, é apresentada com base no exame da coleção entomológica Prof. Johann Becker do Museu de Zoologia da Universidade Estadual de Feira de Santana (MZUEFS, visando contribuir para o conhecimento da fauna de borboletas do estado da Bahia. A lista inclui 140 espécies, das quais 86 espécies são novos registros para o estado da Bahia e uma nova espécie do gênero of Perophthalma Westwood (Riodinidae. Nymphalidae foi a família de maior riqueza com 60 espécies. A maioria das espécies listadas possui ampla distribuição geográfica no Brasil e ocorre em áreas abertas.

  4. [Social wasps (Hymenoptera: Vespidae) diversity in a cerrado vegetation in Bahia State, Brazil].

    Science.gov (United States)

    de M Santos, Gilberto M; da Cruz, Jucelho D; Marques, Oton M; Gobbi, Nivar

    2009-01-01

    This study aimed to analyze the social wasps species diversity in a cerrado vegetation at the west region of the State of Bahia. Nineteen species of social wasps were found, with Chartergus globiventris de Saussure, Chartergellus communis Richards and Metapolybia cingulata (Fabricius) being recorded for the first time for the State of Bahia. The arboreous cerrado showed a higher species richness (S=19) and diversity (H'=2.33) than the agroecossistems (farms) (S=8; H'=1,84). However, nest abundance was higher at the agroecossystems (N=107 nests) than at the arboreous cerrado (N=87 nests). The physiognomy of 'cerrado campo sujo' showed the lowest abundance of social wasps colonies (N=61 nests) and intermediate values of species richness (S=13) and diversity (H'=2.20). PMID:19618045

  5. Evaluation of Forest Fire Danger Indexes for Eucalypt Plantations in Bahia, Brazil

    OpenAIRE

    Larissa Alves Secundo White; Benjamin Leonardo Alves White; Genésio Tâmara Ribeiro

    2015-01-01

    A Forest Fire Danger Index is a valuable tool in forest fire prevention and firefight because it grades fire occurrence possibility on a daily basis. Six Fire Danger Indexes were tested for accuracy based on forest fire occurrence in eucalyptus plantations of the north coast of Bahia, Brazil. They are Angstron, Nesterov, Telicyn Logarithmic Index, Monte Alegre, Rodríguez and Moretti, and Modified Monte Alegre. The results were analyzed using two parameters of the Heidke Skill Score test: Skil...

  6. Production of marigolds planted on Bahia grass as a function of organic fertilization

    Directory of Open Access Journals (Sweden)

    Samuel Vasconcelos Valadares

    2010-09-01

    Full Text Available The objective of this work was to evaluate the effect of different organic fertilization levels on the production of marigolds (Calendula officinalis L. planted on living perennial mulch of Bahia grass (Paspalum notatum. The experiment was carried out in Montes Claros, on a Cambisol, in an experimental design of randomized blocks with four treatments (0, 3, 6 and 9kg of organic fertilizer m-2 and six replications. The addition of organic fertilizer increased the capitula dry matter mass linearly.

  7. Religion and Architecture: Designing a temple of Candomble in Salvador Bahia, Brazil

    OpenAIRE

    Robles, Joaquin G.

    2007-01-01

    My thesis aims to create a place of worship for the people of the neighborhood of Plataforma, located in Salvador Bahia, Brazil. Candomble was introduced to Brazil during times of slavery and is the root of Afro-Brazilian culture. In the chaotic world of favelas (Portuguese for slums) the religion of Candomble brings people together and gives order to the community. The neighborhood's current temple also functions as the local priest's home. As an area of low socioeconomic status, Plataf...

  8. [Polyplacophoran communities (Mollusca: Polyplacophora) at Bahia de La Paz, Baja California Sur, México].

    Science.gov (United States)

    García Ríos, Cedar I; Alvarez Ruiz, Migdalia

    2007-03-01

    Eight species of polyplacophorans have been reported from La Bahia de la Paz, Baja California Sur, Mexico. We add Lepidochitona beanii, Chaetopleura lurida, Stenoplax limaciformis, S. mariposa, Lepidozona clathrata, L. serrata and Acanthochitona arragonites, increasing the known number of species to 15. Ordination analysis of five chiton communities at the site suggests a correlation of wave exposure to species composition and diversity: communities with intermediate wave exposure have more species (richness) and higher diversity (Shannon's index). PMID:18457125

  9. Validation of a food frequency questionnaire designed for adolescents in Salvador, Bahia, Brazil

    OpenAIRE

    Jean Márcia Oliveira MASCARENHAS; Rita de Cássia Ribeiro SILVA; Maria Ester Pereira Conceição MACHADO; SANTOS, Carlos Antonio de Souza Teles; Marchioni, Dirce Maria Lobo; Barreto, Maurício Lima

    2016-01-01

    Objective: This study assessed the validity of a Food Frequency Questionnaire used to assess food intake in adolescents in Salvador, Bahia, Brazil. Methods: Seventy adolescents enrolled in public schools aged 11 to 17 years participated in this study. The dietary intake of the adolescents was assessed using the Food Frequency Questionnaire and the mean value of three-day food record, used as the reference method. The mean (and standard deviation) energy and nutrient intakes estimated from th...

  10. A preliminary evaluation of shallow-water rhodolith beds in Bahia Magdalena, Mexico

    OpenAIRE

    Enrique Ávila; Rafael Riosmena-Rodriguez

    2011-01-01

    The aim of the present study was to describe the structure of shallow-water rhodolith beds from Bahia Magdalena, one of the most productive estuarine systems of the Mexican Pacific coasts. From September 2008 to May 2009 four rhodolith beds were found (between 1 and 3 m depth) and population descriptors such as rhodolith density, size classes, branch density, volume and weight were determined. The dominant rhodolith forming species was Lithophyllum margaritae. The size of beds ranged from 7,6...

  11. COMMUNITY STRUCTURE OF THE TINTINNIDS (CILIOPHORA: SPIROTRICHEA) IN THE REGION OF ABROLHOS (BAHIA, BRAZIL)

    OpenAIRE

    Alejandro Esteweson Santos Faustino da Costa; Sigrid Neumann-Leitão; Fabiano Lopes Thompson; Pedro Augusto Mendes de Castro Melo; Jana Ribeiro de Santana

    2015-01-01

    The tintinnid community in the region of Abrolhos (Bahia, Brazil) was studied during February 2012. We hypothesized that the tintinnid community structure varies significantly over a short temporal scale (photoperiod), as well as spatially over a short scale (on and away from the reefs), and a broad scale (distance of the reef area from the coast). Three areas in Abrolhos were studied. Two sampling points were delimited in each area, where the tintinnids were collected by horizontal subsurfac...

  12. Amphibians of Serra Bonita, southern Bahia: a new hotpoint within Brazil’s Atlantic Forest hotspot

    OpenAIRE

    Iuri Dias; Tadeu Medeiros; Marcos Vila Nova; Mirco Solé

    2014-01-01

    Abstract We studied the amphibian community of the Private Reserve of Natural Heritage (RPPN) Serra Bonita, an area of 20 km2 with steep altitudinal gradients (200–950 m a.s.l.) located in the municipalities of Camacan and Pau-Brasil, southern Bahia State, Brazil. Data were obtained at 38 sampling sites (including ponds and transects within the forest and in streams), through active and visual and acoustic searches, pitfall traps, and opportunistic encounters. We recorded 80 amphibian species...

  13. Amphibians of Serra Bonita, southern Bahia: a new hotpoint within Brazil’s Atlantic Forest hotspot

    OpenAIRE

    Dias,Iuri; Medeiros,Tadeu; Vila Nova,Marcos; Solé, Mirco

    2014-01-01

    We studied the amphibian community of the Private Reserve of Natural Heritage (RPPN) Serra Bonita, an area of 20 km2 with steep altitudinal gradients (200–950 m a.s.l.) located in the municipalities of Camacan and Pau-Brasil, southern Bahia State, Brazil. Data were obtained at 38 sampling sites (including ponds and transects within the forest and in streams), through active and visual and acoustic searches, pitfall traps, and opportunistic encounters. We recorded 80 amphibian species distribu...

  14. Megafauna do Quaternário tardio de Baixa Grande, Bahia, Brasil.

    Directory of Open Access Journals (Sweden)

    Ricardo da Costa Ribeiro

    2009-10-01

    Full Text Available It is presented the first occurrence of the late Pleistocene - Holocene mammals fossils in a gnamma-like deposit in the Baixa Grande municipality, Bahia State. The identified taxa were Eremotherium laurillardi (Pilosa – Megatheriidae, Panochthus greslebini (Cingulata - Glyptodontidae, Toxodontinae (Notoungulata - Toxodontidae and Stegomastodon waringi (Proboscidea - Gomphoteriidae. The inferred ecology for this fauna is related to a savanna/forest habitat, in a more wet climate than the present-day semi-arid climate.

  15. Ethnotaxonomy of birds by the inhabitants of Pedra Branca Village, Santa Teresinha municipality, Bahia state, Brazil

    OpenAIRE

    Galvagne Loss, Ana Teresa; Costa Neto, Eraldo Medeiros; Machado, Caio Graco; Flores, Fernando Moreira

    2014-01-01

    Background Studies on popular names of birds help to understand the relationship between human beings and birds and it also contributes to the field of ornithology. Methods This study aims to register the ethnotaxonomy of birds in the village of Pedra Branca, Santa Teresinha municipality, Bahia State, Brazil, by cataloguing and identifying their popular names, besides understanding the ethnoclassification system of local bird species. The ethno-ornithological data were obtained by means of se...

  16. Recent trends in annual snowline variations in the northern wet outer tropics: case studies from southern Cordillera Blanca, Peru

    Science.gov (United States)

    Veettil, Bijeesh Kozhikkodan; Wang, Shanshan; Bremer, Ulisses Franz; de Souza, Sergio Florêncio; Simões, Jefferson Cardia

    2016-03-01

    This paper describes the changes in the annual maximum snowlines of a selected set of mountain glaciers at the southern end of the Cordillera Blanca between 1984 and 2015 using satellite images. Furthermore, we analysed the existing glacier records in the Cordillera Blanca since the last glacial maximum to understand the evolution of glaciers in this region over a few centuries. There was a rise in the snowline altitude of glaciers in this region since the late 1990s with a few small glacier advances. Historical to the present El Niño-Southern Oscillation (ENSO) and Pacific Decadal Oscillation (PDO) records were also analysed to understand whether there was a teleconnection between the glacier fluctuations in the region and the phase changes of ENSO and PDO. We also assessed the variations in three important climatic parameters that influence the glacier retreat—temperature, precipitation, and relative humidity—over a few decades. We calculated the anomalies as well as the seasonal changes in these variables since the mid-twentieth century. There was an increase in temperature during this period, and the decrease in precipitation was not so prominent compared with the temperature rise. There was an exceptionally higher increase in relative humidity since the early 2000s, which is relatively higher than that expected due to the observed rate of warming, and this increase in humidity is believed to be the reason behind the unprecedented rise in the snowline altitudes since the beginning of the twenty-first century.

  17. Spatial study of homicide rates in the state of Bahia, Brazil, 1996-2010

    Directory of Open Access Journals (Sweden)

    Tiago Oliveira de Souza

    2014-06-01

    Full Text Available OBJECTIVE To analyze the spatial distribution of homicide mortality in the state of Bahia, Northeastern Brazil. METHODS Ecological study of the 15 to 39-year old male population in the state of Bahia in the period 1996-2010. Data from the Mortality Information System, relating to homicide (X85-Y09 and population estimates from the Brazilian Institute of Geography and Statistics were used. The existence of spatial correlation, the presence of clusters and critical areas of the event studied were analyzed using Moran’s I Global and Local indices. RESULTS A non-random spatial pattern was observed in the distribution of rates, as was the presence of three clusters, the first in the north health district, the second in the eastern region, and the third cluster included townships in the south and the far south of Bahia. CONCLUSIONS The homicide mortality in the three different critical areas requires further studies that consider the socioeconomic, cultural and environmental characteristics in order to guide specific preventive and interventionist practices.

  18. Features at some significant estuaries of India

    Digital Repository Service at National Institute of Oceanography (India)

    Bhattathiri, P.M.A.

    in the second and 162 in the third. Most of the studies on various aspects have been confined to very few of these, and that too, mostly to minor ones. Very little work has been carried out from many of the estuaries of the major rivers. An overview...

  19. Radiological assessment of the Esk Estuary

    International Nuclear Information System (INIS)

    An assessment has been carried out of the radiological impact of artificial radionuclides in the Esk estuary in Cumbria, UK. Measurements were made of the distributions of 137Cs, 239+240Pu, and 241Am in water, surface bed sediments and core profiles. The highest measured concentrations in surface sediments were 2.8 Bq g-1 of 137Cs, 3.1 Bq g-1 of 239+240Pu and 4.7 Bq g-1 of 241Am. These values represent significant decreases from similar measurements made in 1970-1980. The measured behaviour of the actinides in low salinity water at the head of the estuary supports previous observations of actinide remobilisation from the bed. A model has been developed which simulates the long-term behaviour of radioactivity in the estuary. The model incorporates representations of tidal mixing, sediment transport, seasonal and long-term sediment accretion. The model also represents long-term build-up in salt marsh regions. The model gives good agreement with measured distributions of 137Cs, but tends to underestimate actinide concentrations by factors of 2-3. Dose calculations show the importance of radionuclide uptake through livestock grazing sea-washed pasture alongside the estuary. 137Cs and 241Am are identified as the most important radionuclides considered in the assessment. (Author)

  20. Bacterioplankton dynamics in the Mondego estuary (Portugal)

    Science.gov (United States)

    Bacelar-Nicolau, P.; Nicolau, L. B.; Marques, J. C.; Morgado, F.; Pastorinho, R.; Azeiteiro, U. M.

    2003-05-01

    In this work, the density of bacterioplankton and environmental parameters were monitored over a 11 month period (July 1999-June 2000), and also during one tidal cycle (15 June 2000), at two sampling stations, in the estuary of River Mondego. These data were treated by multivariate analyses methods in order to identify the key factors that control the dynamics of the bacterioplankton in the estuary. Bacterial dynamics were dominated by temporal gradients (annual seasons and tide-related) and less by the spatial structure of the estuary. Three main metabolic groups of bacterioplankton—aerobic heterotrophic bacteria, sulphate-reducing bacteria (SRB) and nitrate-reducing bacteria (NRB)—involved in the cycling of organic matter, were present in the water column of the estuary. Their relative abundance depended on the particular physical, chemical and biological environment. The abundance of aerobic heterotrophic bacteria, during the 11 month study, was modelled as a function of nitrate (the most important variable, with a negative effect), temperature, salinity and pH (with positive effects). SRB appeared to be limited to the water-sediment interface, where concentrations of sulphate and POM were greater. A competition between SRB and NRB for carbon has also been suggested.

  1. Reversing circulation patterns in a tropical estuary

    Science.gov (United States)

    Valle-Levinson, Arnoldo; Bosley, Kathryn T.

    2003-10-01

    A combination of current velocity and water density measurements was used to characterize the basic patterns of water exchange in the Gulf of Fonseca, a tropical estuary on the Pacific Ocean side of Central America. The measurements were obtained during spring and neap tides in March (dry season) and June (wet season) of 2001 and consisted of profiles of current velocity and density along four transects. From mid-March to mid-April a time series of hourly surface current velocity maps was also obtained with a high-frequency radar system of two antennas. The sampling transects and the radar coverage concentrated in the portion of the estuary that has open communication with the ocean. During the dry season, water exchange at the entrance to the gulf suggested an inverse estuarine circulation that was more robust, and its dynamics were closer to geostrophy during neap than during spring tides. It is likely that salinity increased toward the tributaries of the system and then decreased within those tributaries because of the persistent influence of fresh water. In contrast, during the wet season, salinity decreased into the estuary, and the circulation resembled that of a typical estuary. In this season the fortnightly modulation of exchange flows was masked by wind effects, which also played a relevant role in the dynamics. The net volume inflows measured in both seasons suggested that the residence time of the Gulf of Fonseca varies from 2 weeks to 1 month.

  2. BCG Approaches for Improved Management of Estuaries

    Science.gov (United States)

    Estuaries and other complex aquatic systems are exposed to a variety of stressors that act at several scales, but are managed piecemeal - - often resulting in a “death by 1000 cuts” caused by cumulative impacts to these valued resources. To address this, managers need tools that...

  3. Distribution of foraminifera in the Cochin estuary

    Digital Repository Service at National Institute of Oceanography (India)

    Rao, K.K.; Balasubramanian, T.

    of the channel by dredging. It is also predicted that total number of species present in the estuary will likely increase further as more nearshore foraminiferids migrate into it in the coming years, with more deepening of the channel as it will enhance speed...

  4. Nutrient elements in large Chinese estuaries

    Science.gov (United States)

    Zhang, Jing

    1996-07-01

    Based on comprehensive observations since 1983, this study summarizes major features of nutrient elements (nitrogen, phosphorus and silicon) in large Chinese river/estuary systems. Elevated nutrient element levels were observed in Chinese rivers, when compared to large and less disturbed aquatic systems (e.g. the Amazon, Zaire and Orinoco). Data from this study are similar to those obtained from the polluted and/or eutrophic rivers in Europe and North America (e.g. the Rhóne and Loire). Nutrient elements may have either conservative or active distributions, or both, in the mixing zone, depending on the element and the estuary. For example, non-conservative behaviors were observed in the upper estuary, where nutrient elements may be remobilized due to the strong desorption and variations of the fresh water end-member, but conservative distributions were found afterwards in the lower estuary. Outside the riverine effluent plumes, nutrient elements may be depleted in surface waters relative to elevated bioproduction, whereas the regeneration with respect to decomposition of organic material and/or nitrification/denitrification offshore, may sustain high levels of nutrient elements in near-bottom waters. Laboratory experiment data generally compares well with field observations. The high fluxes and area] yields of nutrient elements from large Chinese rivers, indicate the extensive use of chemical fertilizers and domestic waste drainage over watersheds in China.

  5. Toxicidad aguda del sulfato de cobre (CuSO4) en alevinos de cachama blanca (Piaractus brachypomus) bajo condiciones de aguas blandas

    DEFF Research Database (Denmark)

    Velasco-Santamaría, Yohana M.; Gómez-Manrique, Wilson; Calderón-Bernal, Juan M.

    2006-01-01

    To preliminarily determine acute CuSO4 toxicity in cachama blanca (Piaractus brachypomus) fingerlings, 110 individuals were exposed to seven different concentrations: 0 (control), 0.25, 0.50, 1.00, 1.50, 2.00 and 4.00 ppm using semi-static system aquariums. Water hardness in reference to CaCO3 wa...

  6. Education reform, race, and politics in Bahia, Brazil Reforma escolar, racismo y políticas locales en Bahia, Brasil Reforma educacional, racial e política na Bahia, Brasil

    Directory of Open Access Journals (Sweden)

    Bernd Reiter

    2008-03-01

    Full Text Available This article discusses the main findings and conclusions from my field research evaluating education reform in the state of Bahia, Brazil. Data collection was done during two exploratory research trips to Salvador, the state capital, in 2001 and in 2005. The Bahian Education Reform, initiated by the state government in 1999 and funded to a great extent by the World Bank, has achieved some very significant goals, most importantly the expansion of high school education and the broadening of access to primary education in areas where access was far from universal. My research nevertheless points to some sever shortcomings, namely with regard to the situation of Afro-Brazilians. Structural racism provides one of the strongest explanations for this shortcoming. Structural racism in Bahia lowers teachers' and principals' expectations about the potential for academic achievement of poor Afro-Brazilians; structural racism widens the gap between students and principals, contributing to a mutual alienation of this two groups and jeopardizing the creation of strategic alliances and synergies inside schools; and it alienates schools from neighborhoods, impeding meaningful community and parental involvement in school management. Finally, the low recognition that public teachers receive from society as a whole, reflected by low salaries, and a general lack of institutional incentive structures that reward outstanding performance and sanction under-average performance have transformed Bahian public education into a desperado system, where the motivations of teachers and students are systematically grinded and their hopes frustrated.Este artículo discute las conclusiones principales de mi investigación en la que evalúo la reforma escolar en el estado de Bahia, Brasil. La recolección de datos fue realizada durante dos viajes exploratorios de investigación a Salvador, la capital del estado, en 2001 y en 2005. La Reforma Educacional en Bahia iniciada por el

  7. Supply chain management of the castor biodiesel in the Bahia state, Brazil; Gestao da cadeia de suprimentos do biodiesel de mamona no estado da Bahia

    Energy Technology Data Exchange (ETDEWEB)

    Freires, Francisco G.M.; Goncalo, Thomas E.E.; Oliveira, Danillo R.S.B. [Universidade Federal do Vale do Sao Francisco (UNIVASF), Juazeiro, BA (Brazil)], E-mail: francisco.gaudencio@univasf.edu.br

    2009-07-01

    In front of the global trend for developing new ways of energy that pollute less and are renewable, Brazil emerges as a major actor in the development and use of technology for the production of biofuels. In the context of the potential of semi-arid to produce some oil used in production, the Brazilian government is enabling the production of Northeastern region. The State of Bahia is the largest producer of castor oil from Brazil, with an estimated production of 102.8 thousand tonnes of grain in the season 2008/2009 (CONAB, 2009). The development of the sector depends on appropriate government actions to support their competitive sustainability, and encouraging the improvement of management techniques in all involved. In that scenario, the logistics contributes to the development of this sector through the supply chain management. One conclusion is that the competitiveness and sustainability of the supply chain of castor in the Semi-arid of Bahia practices depends on the adoption of integrated logistics, without which the current failures prevent the consolidation of governmental objectives defined. (author)

  8. Spittlebug Cephisus siccifolius damaging eucalypt plants in the State of Bahia, Brazil Cigarrinha-de-espuma Cephisus siccifolius em plantio de eucalipto clonal no Estado da Bahia, Brasil

    Directory of Open Access Journals (Sweden)

    Genésio Tâmara Ribeiro

    2005-07-01

    Full Text Available Most common pests of eucalyptus plants in Brazil are leaf cutting ants and defoliating caterpillars. Other groups, eventually, feeding on eucalyptus include Heteroptera and cicadas. The objectives of this work were to identify and to describe attack symptoms of Cephisus siccifolius (Walker 1851 (Hemiptera: Aphrophoridae on eucalyptus trees in a stand of 25.77 hectares in the State of Bahia, Brazil, where 99.3% of them were attacked by this spittlebug. Damage was more severe on branches and leaves. Tree death was, relatively, low while those cut showed 4.7 colonies of this spittlebug with 21.9 nymphs per colony. Cultural control with the removal of trees attacked was recommended.Os insetos-praga mais comuns em plantios de eucalipto no Brasil são formigas cortadeiras e lagartas desfolhadoras. Eventualmente, outros insetos como percevejos e cigarrinhas podem danificar essas plantas. O objetivo deste trabalho foi identificar e descrever os sintomas de ataque, em um plantio de eucalipto de 25,77 hectares, no Estado da Bahia, onde 99,3% das árvores tinham sido atacadas pela cigarrinha-de-espuma Cephisus siccifolius (Walker 1851 (Hemiptera: Aphrophoridae. Os danos foram maiores em galhos e folhas. A mortalidade de árvores foi baixa, apesar de se observar 4,7 colônias de cigarrinhas por árvore, com 21,9 ninfas por colônia. O corte das árvores infestadas foi recomendado como controle.

  9. Nutrient budgets for large Chinese estuaries

    Directory of Open Access Journals (Sweden)

    S. M. Liu

    2009-10-01

    Full Text Available Chinese rivers deliver about 5–10% of global freshwater input and 15–20% of the global continental sediment to the world ocean. We report the riverine fluxes and concentrations of major nutrients (nitrogen, phosphorus, and silicon in the rivers of the contiguous landmass of China and Korea in the northeast Asia. The rivers are generally enriched with dissolved inorganic nitrogen (DIN and depleted in dissolved inorganic phosphate (PO43− with very high DIN: PO43− concentration ratios. DIN, phosphorus, and silicon levels and loads in rivers are mainly affected by agriculture activities and urbanization, anthropogenic activities and adsorption on particulates, and rock types, climate and physical denudation intensity, respectively. Nutrient transports by rivers in the summer are 3–4 times higher than those in the winter with the exception of NH4+. The flux of NH4+ is rather constant throughout the year due to the anthropogenic sources such as the sewer discharge. As nutrient composition has changed in the rivers, ecosystems in estuaries and coastal sea have also changed in recent decades. Among the changes, a shift of limiting nutrients from phosphorus to nitrogen for phytoplankton production with urbanization is noticeable and in some areas silicon becomes the limiting nutrient for diatom productivity. A simple steady-state mass-balance box model was employed to assess nutrient budgets in the estuaries. The major Chinese estuaries export <15% of nitrogen, <6% of phosphorus required for phytoplankton production and ~4% of silicon required for diatom growth in the Chinese Seas (Bohai, Yellow Sea, East China Sea, South China Sea. This suggests that land-derived nutrients are largely confined to the immediate estuaries, and ecosystem in the coastal sea beyond the estuaries is mainly supported by other nutrient sources such as regeneration, open ocean and

  10. Application of the environmental isotopes to the hydrogeological study of the coastal sector in the Buenos Aires province, between Cabo San Antonio and Bahia Blanca. Final report for the period December 1984 - December 1989

    International Nuclear Information System (INIS)

    Results and conclusions obtained under the framework of the 3995/RB research contract between the IAEA and the INGEIS with participation of the Dirreccion de Geologia, Mineria y Aguas Subterraneas (DGMAS) and the Centro Federal de Inversiones (C.F.I.) are presented. From the results the suitability of the isotope techniques for tracing hydrodynamic processes could be confirmed. Recharge condition also have been defined. The exceptional event of flood in the Buenos Aires province that begin in 1986 in connection with abnormal high precipitations targed infiltrating waters with the isotopical signal of the evaporation. This signal was found out in many of the sampled wells and allowed to recognize the recharge, even to significant depths. In the Pinamar and Villa Gesell towns, it was possible to establish the dynamic of wells under seasonal exploitation. In the most of cases water withdrawn in summer was recharged in the immediate precedent pluvious period. Refs, figs and tabs

  11. Olodum da Bahia, a History of Cultural Inclusion Olodum de Bahai une inclusion historique culturelle Olodum da Bahia, une inclusión histórico cultural

    Directory of Open Access Journals (Sweden)

    Ruy José Braga Duarte

    2012-03-01

    Full Text Available This article focuses on the treatment of the Grupo Cultural Olodum with young adolescents Maciel Pelourinho, Salvador - Bahia - Brazil, in the 70 and 80 living in situations of profound social vulnerability and the opportunities were few. The Pelourinho, Salvador Historical Center, this time was inhabited by people who were unable to decent housing, since the site had no basic infrastructure, dominated the robberies, crime, prostitution and drug trafficking.Within this panorama was created Bloco Afro Olodum, the intention to create opportunities for the population of blacks and Maciel Pelourinho Bahia able to play the carnival on a block that had its identity.Cet article relate l’accord passé entre le Groupe Culturel Olodum et de jeunes adolescents de Maciel Pelourinho, Salvador – Bahia – Brésil, qui, dans les années 70 et 80, vivaient dans une situation de profonde vulnérabilité sociale offrant peu d’opportunités. Le Pelourinho, Centre Historique de Salvador, était habité à cette époque par des personnes qui n’avaient pas de conditions de logement dignes, puisque le lieu ne possédait pas d’infrastructures basiques ; les vols, la délinquance, la prostitution et le trafic de drogues prédominaient alors.C’est dans ce contexte que fut crée le Bloc Afro Olodum, afin de permettre à la population de Maciel Pelourinho et à celle des Noirs de Bahia de participer au carnaval dans un bloc à leur image.Este artículo se centra en el trato del Grupo Cultural Olodum con los jóvenes adolescentes de Maciel Pelourinho, Salvador - Bahía - Brasil, que en los años 1970s y 1980s vivían en situaciones de profunda vulnerabilidad social y gozaban de pocas oportunidades. En aquel entonces, el Pelourinho, centro histórico de Salvador, estaba habitado por personas que no podían acceder a viviendas decentes, ya que la zona no tenía infraestructuras básicas, y predominaban robos, crimen, prostitución y tráfico de drogas. En este

  12. U-Series Disequilibria in Soils, Pena Blanca Natural Analog, Chihuahua, Mexico

    International Nuclear Information System (INIS)

    The Nopal I uranium deposit located in the Sierra Pena Blanca, Mexico. The deposit was mined in the early 1980s, and ore was stockpiled close by. This stockpile area was cleared and is now referred to as the Prior High Grade Stockpile (PHGS). Some of the high-grade boulders from the site rolled downhill when it was cleared in the 1990s. For this study soil samples were collected from the alluvium surrounding and underlying one of these boulders. A bulk sample of the boulder was also collected. Because the Prior High Grade Stockpile had no ore prior to the 1980s a maximum residence time for the boulder is about 25 years, this also means that the soil was at background as well. The purpose of this study is to characterize the transport of uranium series radionuclides from ore to the soil. Transport is characterized by determining the activities of individual radionuclides and daughter to parent ratios. Isotopes of the uranium series decay chain detected include 210Pb, 234U, 230Th, 226Ra, 214Pb, and 214Bi. Peak areas for each isotope are determined using gamma-ray spectroscopy with a Canberra Ge (Li) detector and GENIE 2000 software. The boulder sample is close to secular equilibrium when compared to the standard BL-5 (Beaver Lodge Uraninite from Canada). Results for the soils, however, indicate that some daughter/parent pairs are in secular disequilibrium. These daughter/parent (D/P) ratios include 230Th/234U, which is greater than unity, 226Ra/230Th, which is also greater than unity, and 210Pb/214Bi, which is less than unity. The gamma-ray spectrum for organic material lacks 230Th peaks, but contains 234U and 226Ra, indicating that plants preferentially incorporate 226Ra. Our results, combined with previous studies require multistage history of mobilization of the uranium series radionuclides. Earlier studies at the ore zone could limit the time span for mobilization only to a few thousand years. The contribution of this study is that the short residence time of the

  13. Geochronology and Fluid-Rock Interaction Associated with the Nopal I Uranium Deposit, Pena Blanca, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    M. Fayek; P. Goodell; M. Ren; A. Simmons

    2005-07-11

    The Nopal I uranium (U) deposit, Pena Blanca District, Mexico, largely consists of secondary U{sup 6+} minerals, which occur within a breccia pipe mainly hosted by the 44 Ma Nopal and Colorados volcanic formations. These two units overly the Pozos conglomerate formation and Cretaceous limestone. Three new vertical diamond drill holes (DDHs) were recently drilled at Nopal I. DDH-PB1 with continuous core was drilled through the Nopal I deposit and two additional DDHs were drilled {approx}50 m on either side of the cored hole. These DDHs terminate 20 m below the current water table, thus allowing the detection of possible gradients in radionuclide contents resulting from transport from the overlying uranium deposit. Primary uraninite within the main ore body is rare and fine-grained ({approx}50 micrometers), thus making geochronology of the Nopal I deposit very difficult. Uranium, lead and oxygen isotopes can be used to study fluid-uraninite interaction, provided that the analyses are obtained on the micro-scale. Secondary ionization mass spectrometry (SIMS) permits in situ measurement of isotopic ratios with a spatial resolution on the scale of a few {micro}m. Preliminary U-Pb results show that uraninite from the main ore body gives an age of 32 {+-} 8 Ma, whereas uraninite from the uraniferous Pozos conglomerate that lies nearly 100 m below the main ore body and 25 meters above the water table, gives a U-Pb age that is <1 Ma. Oxygen isotopic analyses show that uraninite from the ore body has a {delta}{sup 18}O = -10.8{per_thousand}, whereas the uraninite within the Pozos conglomerate has a {delta}{sup 18}O = +1.5{per_thousand}. If it is assumed that both uraninites precipitated from meteoric water ({delta}{sup 18}O = -7{per_thousand}), then calculated precipitation temperatures are 55 C for the uraninite from the ore body and 20 C for uraninite hosted by the Pozos conglomerate. These temperatures are consistent with previous studies that calculated precipitation

  14. U-Sries Disequilibra in Soils, Pena Blanca Natural Analog, Chihuahua, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    D. French; E. Anthony; P. Goodell

    2006-03-16

    The Nopal I uranium deposit located in the Sierra Pena Blanca, Mexico. The deposit was mined in the early 1980s, and ore was stockpiled close by. This stockpile area was cleared and is now referred to as the Prior High Grade Stockpile (PHGS). Some of the high-grade boulders from the site rolled downhill when it was cleared in the 1990s. For this study soil samples were collected from the alluvium surrounding and underlying one of these boulders. A bulk sample of the boulder was also collected. Because the Prior High Grade Stockpile had no ore prior to the 1980s a maximum residence time for the boulder is about 25 years, this also means that the soil was at background as well. The purpose of this study is to characterize the transport of uranium series radionuclides from ore to the soil. Transport is characterized by determining the activities of individual radionuclides and daughter to parent ratios. Isotopes of the uranium series decay chain detected include {sup 210}Pb, {sup 234}U, {sup 230}Th, {sup 226}Ra, {sup 214}Pb, and {sup 214}Bi. Peak areas for each isotope are determined using gamma-ray spectroscopy with a Canberra Ge (Li) detector and GENIE 2000 software. The boulder sample is close to secular equilibrium when compared to the standard BL-5 (Beaver Lodge Uraninite from Canada). Results for the soils, however, indicate that some daughter/parent pairs are in secular disequilibrium. These daughter/parent (D/P) ratios include {sup 230}Th/{sup 234}U, which is greater than unity, {sup 226}Ra/{sup 230}Th, which is also greater than unity, and {sup 210}Pb/{sup 214}Bi, which is less than unity. The gamma-ray spectrum for organic material lacks {sup 230}Th peaks, but contains {sup 234}U and {sup 226}Ra, indicating that plants preferentially incorporate {sup 226}Ra. Our results, combined with previous studies require multistage history of mobilization of the uranium series radionuclides. Earlier studies at the ore zone could limit the time span for mobilization only

  15. Mesozooplankton affinities in a recovering freshwater estuary

    Science.gov (United States)

    Chambord, Sophie; Maris, Tom; Colas, Fanny; Van Engeland, Tom; Sossou, Akoko-C.; Azémar, Frédéric; Le Coz, Maïwen; Cox, Tom; Buisson, Laetitia; Souissi, Sami; Meire, Patrick; Tackx, Michèle

    2016-08-01

    Water quality of the Scheldt estuary (Belgium/The Netherlands) has considerably improved in recent years, especially in the upstream, freshwater reaches. Within the zooplankton community, the copepod Eurytemora affinis, typically abundant in brackish water and quasi-absent from freshwater before 2007, has since substantially developed in the latter, where it now represents 90% of the crustacean mesozooplankton community. Simultaneously, cyclopoid copepod abundance has greatly decreased, while cladoceran abundance did not change. The study aim was: 1) to verify if the zooplankton community described for the period 2007-2009 by Mialet et al. (2011) has stabilized until present, and 2) to look for the environmental conditions favouring E. affinis development and causing changes in the upstream freshwater zooplankton community. The 2002-2012 temporal evolution of the zooplankton distribution at three stations in the upstream freshwater Scheldt estuary was analyzed. Water quality remained better after 2007 than before, and some factors revealed continuous improvement in annual mean concentrations (e.g. increase in O2, decrease in BOD5 and NH4sbnd N concentration). The increase in oxygen and the decrease in NH4sbnd N concentration, together with low discharge during summer were the main environmental factors explaining the development and timing of E. affinis in the upstream freshwater reach. In this reach, E. affinis maximal abundance is shifted to higher temperatures (summer) compared to its typical maximum spring abundance peak in the brackish zone of the Scheldt estuary and in most temperate estuaries. The changes in zooplankton community followed a temporal and spatial gradient induced by the spatio-temporal evolution of water quality improvement. The most downstream station (3) allowed E. affinis development (oxygen concentration > 4 mg L-1; NH4sbnd N concentration oxygen, etc.), there is no clear cause for their decline. Water quality improvement in the freshwater

  16. Glacier Changes in the Cordillera Blanca, Peru, Derived From SPOT5 Imagery, GIS and Field- Based Measurements

    Science.gov (United States)

    Racoviteanu, A.; Arnaud, Y.; Williams, M. W.; Singh Khalsa, S.

    2007-12-01

    There is urgency in deriving an extensive dataset for deriving glacier changes within the Cordillera Blanca, Peru, in a cost-effective and timely manner. Rapid glacial retreat during the last decades in this area poses a threat for water resources, hydroelectric power and local traditions. While there is some information on decadal changes in glacier extents, there still remains a paucity of mass balance measurements and glacier parameters such as hypsometry, size distribution and termini elevations. Here we investigate decadal changes in glacier parameters for Cordillera Blanca of Peru using data from Système Probatoire d'Observation de la Terre (SPOT) sensor, an old glacier inventory from 1970 aerial photography, field-based mass balance measurements and meteorological observations. Here we focus on: constructing a geospatial glacier inventory from 2003 SPOT scenes; mass balance estimations using remote sensing and field data; frequency distribution of glacier area; changes in termini elevations; hypsometry changes over time; glacier topography (slope, aspect, length/width ratio); AAR vs. mass balance for Artesonraju and Yanamarey benchmark glaciers; precipitation and temperature trends in the region. Over the last 25 years, mean temperatures increases of 0.09 deg.C/yr were greater at lower elevation than the 0.01 deg.C/yr at higher elevations, with little change in precipitation. Comparison of the new SPOT-based glacier inventory with the 1970 inventory shows that glaciers in Cordillera Blanca retreated at a rate of 0.6% per year over the last three decades, with no significant differences in the rate of area loss between E and W side. At lower elevations there is an upward shift of glacier termini along with a decrease in glacier area. Small glaciers are losing more area than large glaciers. Based on the relationship between specific mass balance (bn) and accumulation area ratio (AAR) for the two benchmark glaciers, we predicted a steady-state equilibrium line

  17. Geologic Mapping in Nogal Peak Quadrangle: Geochemistry, Intrusive Relations and Mineralization in the Sierra Blanca Igneous Complex, New Mexico

    Science.gov (United States)

    Goff, F.; Kelley, S. A.; Lawrence, J. R.; Cikowski, C. T.; Krier, D. J.; Goff, C. J.; McLemore, V. T.

    2011-12-01

    Nogal Peak quadrangle is located in the northern Sierra Blanca Igneous Complex (SBIC) and contains most of the White Mountain Wilderness (geologic map is available at http://geoinfo.nmt.edu/publications/maps/geologic/ofgm/details.cfml?Volume=134). The geology of the quad consists of a late Eocene to Oligocene volcanic pile (Sierra Blanca Volcanics, mostly alkali basalt to trachyte) intruded by a multitude of dikes, plugs and three stocks: Rialto, 31.4 Ma (mostly syenite), Three Rivers, ca. 29 to 27 Ma (quartz syenite intruded by subordinate alkali granite), and Bonito Lake, 26.6 Ma (mostly monzonite). Three Rivers stock is partially surrounded by alkali rhyolites that geochemically resemble the alkali granites. The circular shape of the stock and surrounding rhyolites suggests they form the root of a probable caldera. SBIC rocks have compositions typical of those found within the Rocky Mountain alkaline belt and those associated with continental rift zone magmatism. Because the volcanic host rocks are deeply eroded, intrusive relations with the stocks are well exposed. Most contacts at stock margins are near vertical. Roof pendants are common near some contacts and stoped blocks up to 700 m long are found within the Three Rivers stock. Contacts, pendants and stoped blocks generally display some combination of hornfelsing, brecciation, fracturing, faulting and mineralization. Sierra Blanca Volcanics display hydrothermal alteration increasing from argillic in the NW sector of the quad to high-temperature porpylitic near stock margins. Retrograde phyllic alteration occurs within breccia pipes and portions of the stocks. Mineral deposits consist of four types: Placer Au, fissure veins (mostly Ag-Pb-Zn±Au), breccia pipes (Au-Mo-Cu), and porphyry Mo-Cu. A singular pipe on the SW margin of Bonito Lake stock contains sapphire-lazulite-alunite. Although Au has been intermittently mined in the quad since 1865, best production of Au originated around the turn of the last

  18. Seasonal stratification and property distributions in a tropical estuary (Cochin estuary, west coast, India)

    Science.gov (United States)

    Shivaprasad, A.; Vinita, J.; Revichandran, C.; Reny, P. D.; Deepak, M. P.; Muraleedharan, K. R.; Naveen Kumar, K. R.

    2013-01-01

    The intratidal, spring-neap and seasonal variations in stratification were examined in the Cochin estuary. The observations established a strong connection with the distribution of chemical and biological properties. The influence of tides and river discharge forcing in water column stability was quantified using potential energy anomaly (PEA) and stratification parameter. Partially mixed (neap) and well-mixed (spring) conditions during low river discharge (dry) period were altered in monsoon by the salt wedge intrusions. The ecological impact of salt wedge propagation on high tides bringing upwelled water to the system was evident from the bottom hypoxic, high chlorophyll a and nutrient-rich conditions. Phosphate and nitrite concentrations were higher at the bottom saline conditions but silicate and nitrate were clearly supplied by river water. However, during ebb tide this front was driven out of the estuary. The periodic advance and retreat of the salt wedge was inevitable in making the system immune from extended hypoxia/anoxia and maintaining the health of the Cochin estuary. For the seasonally varying river flow in the estuary, salt intrusion receded with increasing river flow in monsoon and rebounded with decreasing river flow in dry season. During monsoon, the intense flushing and reduction in salinity field expansion seemed to be responsible for the limited chlorophyll a levels along the surface of the Cochin estuary.

  19. Seasonal stratification and property distributions in a tropical estuary (Cochin estuary, west coast, India

    Directory of Open Access Journals (Sweden)

    A. Shivaprasad

    2012-07-01

    Full Text Available The intratidal, spring-neap and seasonal variations in stratification were examined in Cochin estuary. The observations established a strong connection with the distribution of chemical and biological properties. The influence of tides and river discharge forcing in water column stability was quantified using potential energy anomaly (PEA and stratification parameter. Partially mixed (neap and well-mixed (spring conditions during low river discharge (dry period were altered in monsoon by the salt wedge intrusions. The ecological impact of salt wedge propagation on high tides bringing upwelled water to the system was evident from the bottom hypoxic, high chlorophyll a and nutrient-rich conditions. Phosphate and nitrite concentrations were higher at the bottom saline conditions but silicate and nitrate were clearly supplied by river water. However, during ebb tide this front was driven out of the estuary. The periodic advance and retreat of the salt wedge was inevitable in making the system immune from extended hypoxia/anoxia and maintaining the health of Cochin estuary. For the seasonally varying river flow in the estuary, salt intrusion receded with increasing river flow in monsoon and rebounded with decreasing river flow in dry season. During monsoon, the intense flushing and reduction in salinity field expansion seemed to be responsible for the limited chlorophyll a levels along the surface of Cochin estuary.

  20. A predictive model for salt intrusion in estuaries applied to the Yangtze estuary

    Science.gov (United States)

    Cai, Huayang; Savenije, Hubert H. G.; Zuo, Shuhua; Jiang, Chenjuan; Chua, Vivien P.

    2015-10-01

    Understanding the way salinity distribution in an estuary reacts to external drivers (e.g., tide, fresh water discharge, dredging, etc.) is important for both water quality and water resources management in estuaries. The salinity distribution depends strongly on the geometry of an estuary, but also on the fresh water discharge that counteracts the salt intrusion. In estuaries it is notoriously hard to estimate this discharge and subsequently to predict the parameters that determine the mixing behaviour depending on it. Recently a method has been developed to predict the fresh water discharge on the basis of water level observations. In addition, predictive equations for tidal mixing have been updated and revised. In this paper, these two predictive methods are combined and subsequently applied to the Yangtze estuary under a wide variation of fresh water discharge. The predicted salt distribution appears to be in good agreement with observations. To provide insight into the optimum use of water resources (e.g., to determine the amount of fresh water discharge required to maintain a specific salt intrusion length), we further study the salt intrusion pattern under different tide and fresh water discharge conditions.

  1. The ecological condition of estuaries in the Gulf of Mexico

    OpenAIRE

    1999-01-01

    This document is intended for use by scientists and other citizens concerned with the ecological condition of estuaries, as well as by managers and lawmakers interested in the sustained use of estuaries for commercial and recreational purposes. It also addresses public concerns about the aesthetic quality of coastal areas vital to tourism and recreation. By producing this report on the ecological condition of estuaries in the Gulf of Mexico, we have taken one step in assessing the health of t...

  2. O problema administrativo na política de assentamentos do Brasil: o caso da fazenda Cascata na Bahia

    Directory of Open Access Journals (Sweden)

    Reginaldo Souza Santos

    2011-02-01

    Full Text Available O presente artigo é resultado de um estudo que toma como objeto de observação o estado da Bahia e tendo como objetivo contribuir para o aprimoramento da política de reforma agrária no Brasil. Para essa análise foi selecionado o assentamento de Cascata, localizado no município de Aurelino Leal, na região do extremo sul da Bahia. Esse recorte regional revelou-se interessante por dois motivos principais: por representar as primeiras experiências dos programas de assentamentos no estado da Bahia; e por refletir experiências de desenvolvimento socioeconômico sustentável, em forma de cooperativas, envolvendo a maioria dos assentamentos da região estudada.

  3. Three new species of the genus Paraleucilla Dendy, 1892 (Porifera, Calcarea) from the coast of Bahia State, Northeastern Brazil.

    Science.gov (United States)

    Cavalcanti, Fernanda F; Menegola, Carla; Lanna, Emilio

    2014-01-01

    Three new species of calcareous sponges from the coast of Bahia State, NE Brazil are described. All of them belong to the genus Paraleucilla (Calcaronea, Leucosolenida, Amphoriscidae): P. solangeae sp. nov., P. oca sp. nov., and P. incomposita sp. nov. The number of species recorded from the Bahia coast has thus increased from 10 to 13. Including these new species, there are now 50 calcareous sponge species known from the entire Brazilian coast. Paraleucilla is now composed of 11 species, six of them occurring along the southwestern Atlantic Ocean. The remaining species occur mainly in the Indian Ocean, and also in the Pacific Ocean, Red Sea and Mediterranean Sea. An identification key for all Paraleucilla species is provided. This paper is dedicated to the memory of Professor Solange Peixinho, to acknowledge her contribution to our understanding of the biodiversity of Calcarea from the Bahia coast in Brazil. PMID:24870655

  4. A zooterapia popular no Estado da Bahia: registro de novas espécies animais utilizadas como recursos medicinais The popular zootherapy in Bahia state: registration of new animal species used as medicinal resources

    OpenAIRE

    Eraldo Medeiros Costa Neto

    2011-01-01

    Este artigo discute o uso de animais como recursos medicinais no Estado da Bahia, nordeste brasileiro. Os dados resultam de uma avaliação processual de desempenho acadêmico, uma vez que se tratou de um exercício requerido pelo professor da disciplina Etnobiologia (semestre 2007.2) aos estudantes do curso de Formação de Professores do Estado da Bahia da Universidade Estadual de Feira de Santana, quando lhes foi solicitado que fizessem um breve registro, em suas respectivas cidades, sobre o uso...

  5. Residências terapêuticas: experiência dos residentes de saúde mental do programa da universidade do estado da Bahia (Therapeutic residency: the experience of mental health residents at the state university of Bahia)

    OpenAIRE

    Josenaide Engrácia dos Santos; Noêmia Aragão Casais; Miriam Santos Alves

    2009-01-01

    Resumo: O presente artigo é produto da experiência dos residentes do Núcleo de Saúde Mental da Residência Multiprofi ssional em Saúde da Universidade do Estado da Bahia (UNEB), na Residência Terapêutica (RT) do distrito sanitário de Itapagipe, localizado em Salvador-Bahia. Essa experiência teve inicio com a inserção dos residentes no Centro de Atenção Psicossocial - CAPS II do referido distrito, que, no planejamento das ações desenvolvidas no território, priorizou a residência terapêutica com...

  6. Aspectos clínicos da fenilcetonúria em serviço de referência em triagem neonatal da Bahia Clinical aspects of phenylketonuria in a reference service for neonatal screening in Bahia

    OpenAIRE

    Tatiana Amorim; Sara P.P. Gatto; Ney Boa-Sorte; Maria Efigênia Q. Leite; Maria Inês M. M. Fontes; Junaura Barretto; Angelina X. Acosta

    2005-01-01

    OBJETIVOS: descrever as características clínicas dos pacientes com hiperfenilalaninemia acompanhados no Serviço de Referência em Triagem Neonatal (SRTN) do estado da Bahia. MÉTODOS: estudo descritivo transversal, tendo como amostra todos os pacientes com diagnóstico conhecido de Hiperfenilalaninemia residentes no estado da Bahia e acompanhados no SRTN até setembro de 2005. Tal população é composta de 46 famílias, num total de 51 pacientes. A análise dos dados foi descritiva, incluindo medidas...

  7. Prevalência de TB ativa e TB latente em internos de um hospital penal na Bahia Prevalence of active and latent TB among inmates in a prison hospital in Bahia, Brazil

    OpenAIRE

    Antônio Carlos Moreira Lemos; Eliana Dias Matos; Carolina Nunes Bittencourt

    2009-01-01

    OBJETIVO: Estimar as prevalências de TB latente e TB ativa entre custodiados de um hospital penal na Bahia. MÉTODOS: Foram avaliados através de estudo de corte transversal com coleta prospectiva de dados 237 internos no Hospital Penal da Bahia entre julho de 2003 e abril de 2004. Um questionário padronizado foi preenchido por estudantes de medicina. Os indivíduos foram sistematicamente submetidos aos seguintes exames: teste tuberculínico, radiografia de tórax em incidência póstero-anterior, b...

  8. Marine geology of the St. Lawrence Estuary

    Energy Technology Data Exchange (ETDEWEB)

    St-Onge, Guillaume [Canada Research Chair in Marine Geology, Institut des sciences de la mer de Rimouski (ISMER) and GEOTOP Research Center, 310 allee des Ursulines, Rimouski, Quebec, G5L 3A1 (Canada); Duchesne, Mathieu J [Geological Survey of Canada, Quebec Division, 490 de la Couronne, Quebec City, Quebec, G1K 9A9 (Canada); Lajeunesse, Patrick, E-mail: guillaume_st-onge@uqar.qc.ca [Departement de geographie and Centre d' etudes nordiques, Universite Laval, Quebec City, Quebec, G1V 0A6 (Canada)

    2011-05-15

    The St. Lawrence Estuary, Eastern Canada, contains a very thick (>450 m) Quaternary sedimentary sequence. The results from recently conducted geophysical surveys in conjunction with piston coring indicate that these sediments were deposited under very high sedimentation rates, sometimes as high as {approx}30 m/ka during the last deglaciation. Results also reveal evidence of large submarine landslides during the Holocene, changes in sedimentation rates and the significant role of submarine canyons and channels to transfer sediments from the coast to the deeper marine environment. Finally, this paper highlights the presence of more than 1900 pockmarks on the seafloor of the St. Lawrence Estuary and discusses their possible origins: active hydrocarbon seeps in the Laurentian Channel and biogenic gas seepage on the northwestern shoulder of the Laurentian Channel.

  9. Time-dependence of salinity in monsoonal estuaries

    Digital Repository Service at National Institute of Oceanography (India)

    Vijith, V.; Sundar, D.; Shetye, S.R.

    ) Based on data during 1970- 1979 Ria of Ferrol, Spain (north-east coast) 250 14.5 6.0 de Castro et al. (2004) Based on data during 1970- 1982 Hudson River estuary, U.S.A. (east coast) 1925* 877.3 376.7 Ralston et al. (2008), Moran and Limburg (1986.... We refer to such estuaries as “monsoonal estuaries” following earlier usage (see, for example, 3 Khadkikar, 2008). To make a case for essential unsteadiness of the salinity field in a monsoonal estuary, we use the Mandovi estuary on the west...

  10. Phosphorous dynamics in a temperate intertidal estuary

    OpenAIRE

    Lillebø, A. I.; Neto, J. M.; Flindt, M. R.; Marques, J C; Pardal, M.A.

    2004-01-01

    Conservation and management of aquatic systems require detailed information of the processes that affect their functioning and development. The objectives of the present work were to describe the phosphorus dynamics during a complete tidal cycle and to quantify the relative contribution of the most common estuarine areas (e.g. seagrass beds, salt marshes, mud- and sand-flats without vegetation) to phosphorus net internal loading in a temperate intertidal estuary.

  11. Impact of climate change on Gironde estuary

    International Nuclear Information System (INIS)

    Within the THESEUS European project, a simplified mathematical model for storm surge levels in the Bay of Biscay was adjusted on 10 events at Le Verdon using wind and pressure fields from CLM/SGA, so that the water levels at Le Verdon have the same statistic quantiles as observed tide records for the period [1960-2000]. A numerical model of the Gironde Estuary was used to evaluate future water levels at 6 locations of the estuary from Le Verdon to Bordeaux and to assess the changes in the quantiles of water levels during the 21. century using ONERC's pessimistic scenario for sea level rise (60 cm). The analysis of future storm surge levels shows a decrease in their quantiles at Le Verdon,, whereas there is an increase of the quantiles of total water levels. This increase is smaller than the sea level rise and gets even smaller as one enters farther upstream in the estuary. A series of flood maps for different return periods between 2 and 100 years and for four time periods ([1960-1999], [2010-2039], [2040-2069] and [2070-2099]) have been built for the region of Bordeaux. Quantiles of water levels in the flood plain have also been calculated. The impact of climate change on the evolution of flooded areas in the Gironde Estuary and on quantiles of water levels in the flood plain mainly depends on the sea level rise. Areas which are not currently flooded for low return periods will be inundated in 2100. The influence of river discharges and dike breaching should also be taken into account for more accurate results. (authors)

  12. Columbia River Estuary Ecosystem Classification Cultural Features

    Science.gov (United States)

    Cannon, Charles M.; Ramirez, Mary F.; Burke, Jennifer L.; Simenstad, Charles A.; O'Connor, Jim E.; Marcoe, Keith

    2012-01-01

    Estuarine ecosystems are controlled by a variety of processes that operate at multiple spatial and temporal scales. Understanding the hierarchical nature of these processes will aid in prioritization of restoration efforts. This hierarchical Columbia River Estuary Ecosystem Classification (henceforth "Classification") of the Columbia River estuary is a spatial database of the tidally-influenced reaches of the lower Columbia River, the tidally affected parts of its tributaries, and the landforms that make up their floodplains for the 230 kilometers between the Pacific Ocean and Bonneville Dam. This work is a collaborative effort between University of Washington School of Aquatic and Fishery Sciences (henceforth "UW"), U.S. Geological Survey (henceforth "USGS"), and the Lower Columbia Estuary Partnership (henceforth "EP"). Consideration of geomorphologic processes will improve the understanding of controlling physical factors that drive ecosystem evolution along the tidal Columbia River. The mapping extent is the interpreted Holocene geologic floodplain of the tidal Columbia River and its tributaries to the estimated head of tide. Cultural features within the Holocene floodplain were mapped by visual interpretation of Light Detection and Ranging (LiDAR) topography supplemented with aerial photographs and U.S. Geological Survey topographic maps. Mapped cultural features are classified as to their purpose when constructed. Because features were drawn based on LiDAR topography, only features with a significant topographic expression are mapped.

  13. Inspection of non-piggable pipelines at PETROBRAS-UN Bahia; Inspecao de dutos nao-pigaveis na PETROBRAS-UN Bahia

    Energy Technology Data Exchange (ETDEWEB)

    Alves, Luis F.C.; Lopes, Paulo R. [PETROBRAS, Salvador, BA (Brazil). Unidade de Negocios da Bahia

    2005-07-01

    PETROBRAS has made a huge effort to inspect and rehabilitate its pipeline net, mainly over the past 10 years. Currently, E and P inspection teams are being challenged to find feasible solutions for the inspection of non-piggable pipelines, so named because they have unsuitable geometry and/or operating conditions for usual in-line inspections. Inside this pipeline category, flow lines, injection and distribution lines and even non-metallic pipelines may be highlighted. This paper presents the results of tests and developments of new inspection tools for the inspection of non piggable pipelines, future tests to be performed in PETROBRAS/E and P Bahia (UN-BA) and some inspection cases in which the operating conditions hinder the run of smart pigs. (author)

  14. Aptidão agroclimática da cultura da videira no Estado da Bahia, Brasil Agroclimatic aptitude of vine crop in Bahia State, Brazil

    Directory of Open Access Journals (Sweden)

    Antônio H. de C. Teixeira

    2002-04-01

    Full Text Available Para delimitação das áreas com diferentes aptidões agroclimáticas para o cultivo da videira (Vitis vinifera L. no Estado da Bahia, Brasil, foram utilizados índices baseados no balanço hídrico climático e nas temperaturas médias do ar. Inicialmente calcularam-se os balanços hídricos pelo método de "Thornthwaite & Mather-1955", utilizando-se 120 mm de retenção de água no solo, com dados climatológicos das regiões de dispersão natural e de cultivo comercial da espécie. Com os dados desses balanços, determinou-se o índice hídrico anual de Thornthwaite (Ih, caracterizando-se o grau de umidade ideal do clima para a cultura. Posteriormente, utilizando-se os valores de temperatura do ar e de precipitação pluvial mensais de 408 localidades do Estado, calcularam-se os balanços hídricos para a mesma capacidade de armazenamento de água no solo e se constatou que não há limitação térmica para o cultivo da espécie na Bahia, sendo os maiores teores de açúcar obtidos nos locais com temperaturas mais elevadas. Portanto, as zonas com aptidão plena foram subdivididas de acordo com os valores de temperatura média do mês mais quente (Tq de cada local considerado. A sobreposição das isolinhas de Tq e Ih, no Estado resultou em quatro classes de aptidão agroclimática.The use of agroclimatic indexes based on water balance and air temperature means, allowed the characterization of areas with different aptitude for grape (Vitis vinifera L. crop growth in Bahia State, Brazil. Thornthwaite and Mather (1955 water balance for 120 mm soil moisture capacity, of the regions of natural dispersion and of areas of commercial crop production was used to determine the annual hydric index of Thornthwaite (Ih in the characterization of ideal hydric conditions of climate for the crop growth. Monthly climatic values of temperature and rainfall were used to obtain the water balance for the same soil moisture capacity for 408 locations of Bahia

  15. Recalibration of the yellow Rhizocarpon growth curve in the Cordillera Blanca (Peru) and implications for LIA chronology

    Science.gov (United States)

    Jomelli, V.; Grancher, D.; Brunstein, D.; Solomina, O.

    2008-01-01

    A new lichen dating method and new moraine observations enabled us to improve the chronology of glacier advances in the Cordillera Blanca (Peru) during the Little Ice Age (LIA). Our results reveal that an early LIA glacial advance occurred around AD 1330 ± 29. However, a second major glacial advance at the beginning of the 17th century overlapped the earlier stage for most glaciers. Hence, this second glacial stage, dated from AD 1630 ± 27, is considered as the LIA maximum glacial advance in the Cordillera Blanca. During the 17th-18th centuries, at least three glacial advances were recorded synchronously for the different glaciers (AD 1670 ± 24, 1730 ± 21, and 1760 ± 19). The moraines corresponding to the two first stages are close to the one in 1630 suggesting a slow recession of about 18% in the total length of the glacier. From the LIA maximum extent to the beginning of the 20th century, the 24 glaciers have retreated a distance of about 1000 m, corresponding to a reduction of 30% in their length. This rate is comparable to that observed during the 20th century. Estimates of palaeo-Equilibrium Line Altitudes show an increase in altitude of about 100 m from the LIA maximum glacial extension at the beginning of the 17th century to the beginning of the 20th century. Because long time series are not available for precipitation and temperature, this glacial retreat is difficult to explain by past climate changes. However, there is a fair correspondence between changes in glacier length and the δ18O recorded in the Quelccaya ice core at a century timescale. Our current knowledge of tropical glaciers and isotope variations leads us to suggest that this common tropical signal reflects a change from a wet LIA to the drier conditions of today. Finally, a remarkable synchronicity is observed with glacial variations in Bolivia, suggesting a common regional climatic pattern during the LIA.

  16. Modeling of U-series Radionuclide Transport Through Soil at Pena Blanca, Chihuahua, Mexico

    Science.gov (United States)

    Pekar, K. E.; Goodell, P. C.; Walton, J. C.; Anthony, E. Y.; Ren, M.

    2007-05-01

    The Nopal I uranium deposit is located at Pena Blanca in Chihuahua, Mexico. Mining of high-grade uranium ore occurred in the early 1980s, with the ore stockpiled nearby. The stockpile was mostly cleared in the 1990s; however, some of the high-grade boulders have remained there, creating localized sources of radioactivity for a period of 25-30 years. This provides a unique opportunity to study radionuclide transport, because the study area did not have any uranium contamination predating the stockpile in the 1980s. One high-grade boulder was selected for study based upon its shape, location, and high activity. The presumed drip-line off of the boulder was marked, samples from the boulder surface were taken, and then the boulder was moved several feet away. Soil samples were taken from directly beneath the boulder, around the drip-line, and down slope. Eight of these samples were collected in a vertical profile directly beneath the boulder. Visible flakes of boulder material were removed from the surficial soil samples, because they would have higher concentrations of U-series radionuclides and cause the activities in the soil samples to be excessively high. The vertical sampling profile used 2-inch thicknesses for each sample. The soil samples were packaged into thin plastic containers to minimize the attenuation and to standardize sample geometry, and then they were analyzed by gamma-ray spectroscopy with a Ge(Li) detector for Th-234, Pa-234, U-234, Th-230, Ra-226, Pb-214, Bi-214, and Pb-210. The raw counts were corrected for self-attenuation and normalized using BL-5, a uranium standard from Beaverlodge, Saskatchewan. BL-5 allowed the counts obtained on the Ge(Li) to be referenced to a known concentration or activity, which was then applied to the soil unknowns for a reliable calculation of their concentrations. Gamma ray spectra of five soil samples from the vertical profile exhibit decreasing activities with increasing depth for the selected radionuclides

  17. Current Characterization at the Amazon estuary

    Science.gov (United States)

    Bezerra, M. O.

    2009-04-01

    At the estuary there are several mechanisms that cause turbulence: influence of solid contours (estuary bottom and shores), speed vertical shearing (fluid inside), wind shearing stress (free surface) and surface and internal gravity waves. Turbulence intensity controls vertical distribution of estuary water mass property concentration. As flow into the estuary takes place during the transition or turbulent regimen, produced by small space and time scale movements, entrainment, turbulent scattering and advection are the processes responsible for fresh water mixing up with the sea and for local salinity variation, as well as for concentration of natural properties and man-made ones. According to this focus, we shall describe general circulation, conveyance and mixing characteristics of the Amazon low estuary waters. Amazon estuary shows unusual characteristics: it is of vast length and enormous outflow. It is extremely wide - 150 Km - and its discharge into the Atlantic amounts to 180,000 m3s-1 (Otman, 1968, Figueiredo et al, 1991), which means 18% of all water discharged by rivers into oceans; this is the largest punctual source of fresh water for oceans (Milliman and Meade, 1983). Maximum outflow is 2.5 x 105 m3s-1, and it happens at the end of May. Minimum outflow is 1.2 x 105 m3 s-1, and it takes place in November. At Amazon River, the Mixing Zone occurs where the Coastal Zone usually is. The reason for that is the extension of fresh water plume moves Northeast for over 1000 Km (Gibbs, 1970; Muller-Karger et al 1988). This is the most extensive estuarine plume ever found in the ocean. During low fluvial discharge (June-November) plume reaches 300 Km; however, on high discharge (November-May) plume reaches 500 Km. Plume already is 3 to 10 m thick and 80 to 300 Km wide (Lentz and Limeburner, 1995). From June to January plume moves towards Africa, from whence 70% of it goes east carried by North Brazil Current retroflection and 30% goes towards the Caribbean. From

  18. Profile of the dentistry course student from Southwestern Bahia State University

    OpenAIRE

    Janaína Viana Alves; Fernando José Neves Batista; Eduardo da Silva Souza; Danillo Lyrio de Oliveira; Sérgio Donha Yarid

    2013-01-01

    The undergraduate course in dentistry at the State University of Southwest Bahia - UESB was created on October 8, 2003, campus of Jequié-BA. The main objective of this research was to draw the profile of Dentistry student at UESB. 140 questionnaires were applied. The results obtained showed that the majority of students are women (71.25%), single with an average age of 22, desiring to take a graduate course after completing their undergraduate degree. They intend to start their career in the ...

  19. Oral Cancer situation in the state of Bahia: estimates and action perspectives

    OpenAIRE

    Suélem Maria Santana Pinheiro; Fábio Ornellas Prado

    2009-01-01

    Cancer is actually a challenge to Brazilian Public Health, once the number of new cases is growing in last decades. Some studies show that cancer was responsible for 12% of causa mortis in the World, achieving six millions of deaths per year. The aim of this study was to compare oral cancer estimates for Brasil and Bahia state in the years 2006/2007 and 2008/2009, to see the possible evolution of this pathology in the periods and, at same time, find perspectives of action for disease control....

  20. Clinical and radiological analysis of children and adolescents with tuberculosis in Bahia, Brazil

    OpenAIRE

    Rosana Franco; Maria Angélica Santana; Eliana Matos; Virgínia Sousa; Antônio Carlos M. Lemos

    2003-01-01

    We reviewed the clinical and radiological characteristics of tuberculosis (TB) in children and adolescents at the Hospital Especializado Octávio Mangabeira, (HEOM) in Salvador, Bahia. This study included 275 TB patients aged 1 to 15 years seen between January 1990 and November 2001. Standardized forms were filled out on the basis of a review of patient records and x-rays. Through a retrospective and descriptive analysis, it was found that 51.6% were male, 35.3% were aged 1 to 5 years, 28% wer...

  1. FARDA & "COR": UM ESTUDO RACIAL NAS PATENTES DA POLÍCIA MILITAR DA BAHIA

    Directory of Open Access Journals (Sweden)

    Jaime P. Ramalho Neto

    2012-01-01

    Full Text Available This paper examines the relationship between color and social ascension among the military police of Bahia, taking into consideration the life history of individual members of the police force, their trajectories in the police academy and their perceptions of racism dating back to their days as a cadet. It also presents data on the racial classification of officials holding the rank of colonel or higher. The data were obtained via questionnaires, yielding a "racial map of Bahian officials" over the period 1970-2005.

  2. Proyecto Vidas Paralelas Indígena: revelando el pueblo Pataxó de Bahia, Brasil

    OpenAIRE

    Santos, Cristina; Uelzo ALVES; Maria da Graça Luderitz HOEFEL; Edgar Merchán HAMANN; Denise Osório SEVERO; Silvéria Maria dos SANTOS

    2012-01-01

    Este relato de experiencia se refiere al grupo étnico Pataxó, que habita la Costa del Descubrimiento, en el sur del Estado de Bahia, Brasil, y en algunos lugares de Minas Gerais. Más especificamente se refiere a las aldeas de Barra Velha (Aldeia Madre) y Coroa Vermelha, con 6.695 y 5.200 habitantes, Saúde Indígena Tempus - Actas de Saúde Coletiva Revista Tempus Actas de Saúde Coletiva 72 respectivamente. Este pueblo fue uno de los primeros a tener contacto con lo...

  3. Condições atuais da esquistossomose no "Dique do Tororó" em Salvador, Bahia

    Directory of Open Access Journals (Sweden)

    Ruth B. Amorim

    1976-06-01

    Full Text Available Os Autores apresentam os resultados de observações realizadas entre os anos de 1971 a 1974 sobre a incidência humana da esquistosomose no Dique do Tororó, em Salvador, Bahia, após alí terem sido realizadas melhorias pela engenhària sanitária e medidas de combate biológico ao caramujo vetor pelo uso de peixes predadores. Comparando com os resultados obtidos por outros Autores em 1960, concluem que o Dique do Tororó não mais representa uma importante fonte de propagação da esquistosomose.

  4. A nonbreeding concentration of Roseate and Common Terns in Bahia, Brazil

    Science.gov (United States)

    Hays, H.; Lima, P.; Monteiro, L.; DiConstanzo, J.; Cormons, G.; Nisbet, I.C.T.; Saliva, J.E.; Spendelow, J.A.; Burger, J.; Pierce, J.; Gochfeld, M.

    1999-01-01

    We report recoveries of banded Roseate (Sterna dougallii) and Common (S. hirundo) Terns netted at Mangue Seco, Bahia, Brazil (11? 27'S, 37? 21'W). Mangue Seco is the first reported South American location where large numbers of Roseate Terns concentrate December-March, and where members of both the North American and Caribbean populations occur together during these months. A Roseate Tern recovered at Mangue Seco sets an age record of 25.6 years for the species. Recoveries at Mangue Seco of Common Terns banded in the Azores (37? -38?N, 25? -29?W) suggest there is a regular transatlantic movement by Common Terns between the two locations.

  5. Aspectos clínicos e demográficos da fenilcetonúria no Estado da Bahia Aspectos clínicos y demográficos de la fenilcetonuria en la provincia de Bahia - Brasil Clinical and demographic aspects of phenylketonuria in Bahia State, Brazil

    OpenAIRE

    Tatiana Amorim; Ney Boa-Sorte; Maria Efigênia Q. Leite; Angelina Xavier Acosta

    2011-01-01

    OBJETIVO: Descrever as características clínicas e demográficas dos pacientes com diagnóstico de hiperfenilalaninemia acompanhados no Serviço de Referência em Triagem Neonatal da Bahia. MÉTODOS: Estudo transversal de 99 famílias (111 afetados) com fenótipo bioquímico de hiperfenilalaninemia, com coleta de dados em prontuários e em banco de dados laboratorial, incluindo aspectos demográficos e clínicos. RESULTADOS: A incidência de hiperfenilalaninemia na Bahia foi de um caso a cada 16.334 nasci...

  6. Perspectives for distributed generation of electricity in the States of Sao Paulo, Bahia and Mato Grosso; Perspectivas da geracao distribuida de eletricidade nos estados de Sao Paulo, Bahia e Mato Grosso

    Energy Technology Data Exchange (ETDEWEB)

    Bajay, Sergio Valdir; Leite, Alvaro Afonso Furtado [Universidade Estadual de Campinas (NIPE/UNICAMP), SP (Brazil). Nucleo Interdisciplinar de Planejamento Energetico], Email: bajay@fem.unicamp.br; Carvalho, Claudio Bezerra de [Universidade do Estado da Bahia (UNEB), Alagoinhas, BA (Brazil); Dorileo, Ivo Leandro [Universidade Federal do Mato Grosso (UFMT), Cuiaba, MT (Brazil). Nucleo Interdisciplinar de Estudos em Planejamento Energetico

    2006-07-01

    This paper addresses the concept of distributed generation of electricity and the current support policies for such kind of generation in the country. Their diffusion perspectives in the States of Sao Paulo, Bahia and Mato Grosso are discussed. The more promising technologies and new policies for them are pointed out. (author)

  7. Nitrogen Source and Loading Data for EPA Estuary Data Mapper

    Science.gov (United States)

    Nitrogen source and loading data have been compiled and aggregated at the scale of estuaries and associated watersheds of the conterminous United States, using the spatial framework in EPA's Estuary Data Mapper (EDM) to provide system boundaries. Original sources of data include...

  8. A note on salt intrusion in funnel-shaped estuaries: Application to the Incomati estuary, Mozambique

    Science.gov (United States)

    Brockway, Rachel; Bowers, David; Hoguane, Antonio; Dove, Veronica; Vassele, Valentina

    2006-01-01

    Salt intrusion in estuaries is important for ecological reasons as well as water extraction purposes. The distance salt intrudes upstream depends on a number of factors, including river discharge, tidal and wind mixing and gravitational circulation. In this paper, an analytical solution is presented for the salt intrusion in a well mixed, funnel-shaped estuary whose cross sectional area decreases exponentially (with decay coefficient β) with distance, x, inland, and in which longitudinal mixing is constant along the length of the estuary. The solution predicts that a graph of the logarithm of salinity against exp ( βx) should be a straight line, with slope proportional to the mixing coefficient K x. The solution is tested against observations from 15 surveys over a four-year period in the Incomati estuary. Good straight line fits, as predicted, are observed on all surveys, with a mean R2 = 0.97. The average value of K x for all surveys is 38 m 2 s -1. The solution is used to make predictions about the minimum river flow required to prevent salt intruding to an extent where it causes a detrimental effect on water extraction. The minimum recommended river flow required to prevent this is 35 m 3 s -1. In recent years, flow has fallen below this level for several months each year.

  9. Contribution of groundwater to the outflow from ungauged glacierized catchments : a multi-site study in the tropical Cordillera Blanca, Peru

    OpenAIRE

    M. Baraer; McKenzie, J.; B. G. Mark; Gordon, R.; Bury, J.; Condom, Thomas; J. Gomez; S. Knox; S. K. Fortner

    2015-01-01

    The rapid retreat of the glaciers of the Cordillera Blanca is having a noticeable impact on the downstream hydrology. Although groundwater is a critical hydrologic component that sustains stream flows during the dry season, its characteristics and its contribution to downstream hydrology remain poorly understood. In this study, we analyse the hydrochemical and isotopic properties of potential hydrologic sources mixing in surface streams to characterize the proglacial hydrology in four glacial...

  10. Digital aeromagnetic data and derivative products from a helicopter survey over the town of Blanca and surrounding areas, Alamosa and Costilla counties, Colorado

    Science.gov (United States)

    Bankey, Viki; Grauch, V.J.S.; Fugro Airborne Surveys Corporation

    2004-01-01

    This CD-ROM contains digital data, image files, and text files describing data formats and survey procedures for aeromagnetic data collected during a helicopter geophysical survey in southern Colorado during October 2003. The survey covers the town of Blanca and surrounding communities in Alamosa and Costilla Counties. Several derivative products from these data are also presented, including reduced-to-pole, horizontal gradient magnitude, and downward continued grids and images.

  11. GAMMA-RAY CHARACTERIZATION OF THE U-SERIES INTERMEDIATE DAUGHTERS FROM SOIL SAMPLES AT THE PENA BLANCA NATURAL ANALOG, CHIHUAHUA, MEXICO

    Energy Technology Data Exchange (ETDEWEB)

    D.C. French; E.Y. Anthony; P.C. Goodell

    2005-07-18

    The Pena Blanca natural analog is located in the Sierra Pena Blanca, approximately 50 miles north of Chihuahua City, Mexico. The Sierra Pena Blanca is composed mainly of ash-flow tuffs, and the uranium in the region is contained in the brecciated zones of these tuffs. The Pena Blanca site is considered a natural analog to the proposed Yucca Mountain Nuclear Waste Repository because they share similar characteristics of structure, volcanic lithology, tectonic activity, and hydrologic regime. One of the mineralized zones, the Nopal I deposit, was mined in the early 1980s and the ore was stockpiled close to the mine. This stockpile area has subsequently been cleared and is referred to as the prior high-grade stockpile (PHGS) site. Soil surrounding boulders of high-grade ore associated with the PHGS site have been sampled. The purpose of this study is to characterize the transport of uranium series radioisotopes from the boulder to the soil during the past 25 years. Transport is characterized by determining the activities of individual radionuclides and daughter to parent ratios. The daughter to parent ratios are used to establish whether the samples are in secular equilibrium. Activities are determined using gamma-ray spectroscopy. Isotopes of the uranium series decay chain detected by gamma-ray spectroscopy include {sup 210}Pb, {sup 234}U, {sup 234}Th, {sup 230}Th, {sup 226}Ra, {sup 214}Pb, {sup 214}Bi, and {sup 234}Pa. Preliminary results indicate that some daughter to parent pairs appear to be in secular disequilibrium. Thorium is in excess relative to uranium, and radium is in excess relative to thorium. A deficiency appears to exist for {sup 210}Pb relative to {sup 214}Bi and {sup 214}Pb. If these results are borne out by further analysis, they would suggest transport of nuclides from the high-grade boulder into its surroundings, followed by continued leaching of uranium and lead from the environment.

  12. Effect of semen collection method (artificial vagina vs. electroejaculation), extender and centrifugation on post-thaw sperm quality of Blanca-Celtibérica buck ejaculates

    OpenAIRE

    Jiménez Rabadán, Pilar; Ramón, Manuel; García Alvarez, Olga; Maroto Morales, Alejandro; Olmo, Enrique del; Pérez Guzmán, María Dolores; Bisbal, A.; Fernández Santos, María del Rocío; Garde López-Brea, José Julián; Soler, Ana Josefa

    2012-01-01

    The aim of this study was to evaluate the effect of semen collection method (artificial vagina compared to electroejaculation), season in which the semen was collected (breeding season compared to non-breeding season), freezing extender (Biladyl®, Andromed® and skim milk based extender) and pre-treatment procedure (washing compared to non-washing) on post-thaw semen quality in buck. Ejaculates from seven bucks of the Blanca-Celtibérica breed were collected by artificial vagina ...

  13. Conditions for tidal bore formation in convergent alluvial estuaries

    Science.gov (United States)

    Bonneton, Philippe; Filippini, Andrea Gilberto; Arpaia, Luca; Bonneton, Natalie; Ricchiuto, Mario

    2016-04-01

    Over the last decade there has been an increasing interest in tidal bore dynamics. However most studies have been focused on small-scale bore processes. The present paper describes the first quantitative study, at the estuary scale, of the conditions for tidal bore formation in convergent alluvial estuaries. When freshwater discharge and large-scale spatial variations of the estuary water depth can be neglected, tide propagation in such estuaries is controlled by three main dimensionless parameters: the nonlinearity parameter ε0 , the convergence ratio δ0 and the friction parameter ϕ0. In this paper we explore this dimensionless parameter space, in terms of tidal bore occurrence, from a database of 21 estuaries (8 tidal-bore estuaries and 13 non tidal-bore estuaries). The field data point out that tidal bores occur for convergence ratios close to the critical convergence δc. A new proposed definition of the friction parameter highlights a clear separation on the parameter plane (ϕ0,ε0) between tidal-bore estuaries and non tidal-bore estuaries. More specifically, we have established that tidal bores occur in convergent estuaries when the nonlinearity parameter is greater than a critical value, εc , which is an increasing function of the friction parameter ϕ0. This result has been confirmed by numerical simulations of the two-dimensional Saint Venant equations. The real-estuary observations and the numerical simulations also show that, contrary to what is generally assumed, tide amplification is not a necessary condition for tidal bore formation. The effect of freshwater discharge on tidal bore occurrence has been analyzed from the database acquired during three long-term campaigns carried out on the Gironde/Garonne estuary. We have shown that in the upper estuary the tidal bore intensity is mainly governed by the local dimensionless tide amplitude ε. The bore intensity is an increasing function of ε and this relationship does not depend on freshwater

  14. Greenhouse gas (N2O emission from Portuguese estuaries

    Directory of Open Access Journals (Sweden)

    Célia Gonçalves

    2014-07-01

    Tagus, Minho and Lima estuaries are source of N2O to the atmosphere. Particularly, in Lima estuary anthropogenic N input seems to play an important role on N2O emission. However, in a global perspective N2O attained emissions represent a reduced fraction (2O yr-1, Barnes and Upstill-Goddard, 2011. Values are comparable with those registered in some Portuguese estuaries and other European less eutrophic estuaries. However, it is known that higher N2O emissions in estuaries may occur during winter and spring (Sun et al., 2014. Thus, these systems may represent on an annual basis a larger source of N2O, which can only be clarified in future studies. Only a full comprehension of the global estuarine nitrogen cycle will provide an efficient basis of scientific knowledge for sustainably management of such ecosystems and ultimately reduce N2O emissions.

  15. Pedro Ferreira, um escultor baiano desconhecido Pedro Ferreira, an unknown sculptor from Bahia

    Directory of Open Access Journals (Sweden)

    Maria Helena Ochi Flexor

    2008-12-01

    Full Text Available Este trabalho é o resultado do início de um estudo sobre o escultor Pedro Ferreira. Embora seja autor de obras importantes, passa quase desapercebido na historiografia da arte baiana. Trata-se de artista que pertence ao tempo em que o neoclassicismo se impunha à cultura Ocidental, porém, ainda restavam, na Bahia, as práticas do período barroco, em especial a cópia dos grandes mestres renascentistas. Pedro Ferreira foi um desses artistas e teve como principal inspirador Murillo, da escola espanhola.This work is the result of a beginning study about a sculptor Pedro Ferreira. Although he was author of important workmanships, he passes almost unknown in the bahian history of art. He was an artist who lives belongs a time when the neoclassicismo was imposed to the Occidental culture, but, still remained in Bahia, the practical ones of the baroque period, in special the copy of the great Renaissance masters. Pedro Ferreira was one of these artists and has inspired, as main artist, Murillo, of the Spanish school.

  16. Determinants of homicides in the state of Bahia, Brazil, in 2009

    Directory of Open Access Journals (Sweden)

    Carlos Augusto Moreira de Sousa

    2014-03-01

    Full Text Available PURPOSE: To carry out a study of association between socioeconomic and demographic factors and homicides in general population, in the state of Bahia, in 2009. METHODS: This is an ecological study. The data were collected from the database of the Information System about Mortality of the Ministry of Health, from the Brazilian Institute of Geography and Statistics and the Institute of Applied Economic Research. The Global Moran index was calculated for the detection of spatial autocorrelation, and the Local Moran index was calculated for the detection of spatial Clusters. The transformation in the variable answer (homicides rates was performed and it was shaped using the Conditional Autoregressive Model. RESULTS: The data showed spatial autocorrelation. Two clusters of municipalities with high rates of homicides were identified, one located predominantly in the Greater Metropolitan Region of Salvador and the other in the South Region of Bahia, especially Eunápolis and Lauro de Freitas, which had the highest rates. The Average Residents Variables, local GDP and the Percentage of Illiteracy presented an inverse association with homicide rates, and the variables Firjan's municipal development index of work and income. Enrolment in high school and the Average of Bolsa Família were directly associated. CONCLUSIONS: The urbanization process, in most cases, not controlled by the State, in most cases, made the cities bigger and with better socioeconomic conditions, attraction centers for people with different socioeconomic levels, increasing the social inequality among the residents of these regions, with parallel increase in homicide rates.

  17. Spatial analysis of migrating Apis mellifera colonies in Salvador, Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Renato L. Jr. Sandes

    2009-11-01

    Full Text Available Beekeeping in Brazil is growing but also associated with an increase in the number of human and animal accidents involved. In particular, bees of the Apis mellifera species (Africanized bees are known for their aggressive behaviour and frequent swarming activity due to their poor adaptation to the human environment. This study analyzed the spatial distribution of occurrences of migratory swarms of A. mellifera and recorded apicultural accidents in the city of Salvador, Bahia, Brazil. The association of demographic and climatic variations on places where the swarms occurred was also evaluated. The study is based on data collected within the frame of the “SOS Bees”, a project initiated for the protection of the environment and enforced by a special unit of the military police in Bahia. In the 3-year period from 2000 to 2003, 590 swarms were registered in 75 of the 98 zones of information of Salvador. Three cluster areas, representing 25.4% of all events, were identified. In that period, 316 apicultural accidents were registered involving humans and one involving dogs. The seasonal rise of the monthly average temperature showed an association with the increase of the number of swarming events.

  18. Ecological interactions of visceral leishmaniasis in the state of Bahia, Brazil

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    Italo A Sherlock

    1996-12-01

    Full Text Available The laboratory and field observations summarized in this paper on visceral leishmaniasis ecology in the State of Bahia, Brazil are based on the author's observations over the past 35 years in a number of state's foci, public health records and literature citations. The disease is endemic with epidemic outbreaks occurring every ten years and its geographical distribution is expanding rapidly in the last years. Leishmania chagasi is the main ethiologic agent of the visceral leishmaniasis but Le. amazonensis s. lato was the only leishmania isolated by other authors from some visceral leishmaniasis human cases in the state. Lutzomyia longipalpis (with one or two spots on tergites III and IV and two sized different populations was epidemiologically incriminated as the main vector. It was found naturally infected with promastigotes, and it was infected with four species of leishmanias in the laboratory. Although the experimental transmission of Le. amazonensis by the bite of Lu. longipalpis to hamsters was performed, the author was not successful in transmitting Le. chagasi in the same way. The dog is the most important domestic source for infection of the vector, however it is not a primary reservoir. The opossum Didelphis albiventris was found naturally infected with Le. chagasi but its role as reservoir is unknown. Foxes and rodents were not found infected with leishmanias in Bahia.

  19. Cerambycidae (Coleoptera do Museu de Zoologia da Universidade Estadual de Feira de Santana, Bahia

    Directory of Open Access Journals (Sweden)

    Ubirajara R. Martins

    2013-09-01

    Full Text Available Novas espécies em Cerambycinae são descritas do Brasil, Piauí: Compsibidion paragraphycum sp. nov. (Neoibidionini. Em Lamiinae, - do Piauí: Trichohippopsis vestita sp. nov. (Agapanthiini; Oncioderes piauiensis sp. nov. (Onciderini; Cotycicuiara caracolensis sp. nov. (Desmiphorini; Xenofrea peculiaris sp. nov. (Xenofreini; Mariliana bellula sp. nov. (Hemilophini; - da Paraíba: Ataxia arenaria sp. nov. (Pteropliini; Dadoychus atrus sp. nov. (Hemilophini. Novos registros em Cerambycinae para o Piauí: Methia longipennis Martins, 1997 (Methiini; Tropidion sipolisi (Gounelle, 1909, Compsibidion decoratum (Gounelle, 1909, Cycnidolon obliquum Martins, 1969 (Neoibidionini; - para o Ceará: Paranyssicus conspicillatus (Erichson, 1847 (Elaphidiini; Aglaoschema collorata (Napp, 1993 (Compsocerini; - para a Bahia: Stizocera phtisica Gounelle, 1909 (Elaphidiini. Novos registros em Lamiinae para o Piauí: Dolichosybra tubericollis Breuning, 1942 (Apomecynini; Ceiupaba lineata Martins & Galileo, 1998, Cicuiara striata (Bates, 1866, Desmiphora pallida Bates, 1874 (Desmiphorini; Nesozineus apharus Galileo & Martins, 1996, Psapharochrus nigrovittatus (Zajciw, 1969 (Acanthoderini; - para o Ceará: Trichohippopsis rufula Breuning, 1958 (Agapanthiini; Ataxia parva Galileo & Martins, 2011 (Pteropliini; Desmiphora cirrosa Erichson, 1847 (Desmiphorini; - para a Paraíba: Eudesmus rubefactus Bates, 1865 (Onciderini; Laraesima ochreoapicalis Breuning, 1973 (Compsosomatini; Psapharochrus itatiayensis (Melzer, 1935 (Acanthoderini; - para a Bahia: Brasiliosoma tibialis (Breuning, 1948 (Compsosomatini; Adesmus hemispilus (Germar, 1821 (Hemilophini.

  20. Early signals of environmental and health impacts caused by uranium mining in Caetite, Bahia, Brazil

    Energy Technology Data Exchange (ETDEWEB)

    Brito, Adelson S. de; Rego, Rita de Cassia Franco [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil). Dept. de Medicina Preventiva. Programa de Pos-Graduacao em Saude, Ambiente e Trabalho; Zucchi, Maria do Rosario [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil). Dept. de Fisica da Terra. Lab. de Fisica Nuclear Aplicada; Navarro, Marcus V. Teixeira, E-mail: mvtn@ifba.edu.b [Instituto Federal da Bahia (LAFIR/NTS/IFBA) Salvador, BA (Brazil). Nucleo de Tecnologia em Saude. Lab. de Fisica Radiologica

    2011-07-01

    Uranium mining and processing at Lagoa Real (Bahia, Brazil) in the southwest of Bahia state started in the year 2000.The processing of uranium ore for obtaining U3O8 (yellowcake) is done today in the processing unit of the Brazilian Nuclear Industries INB located in the area of the same municipality above mentioned. The production capacity is 400 tons / year of U3O8, and the reserves in this region are estimated at 100.000 tons of uranium without any other associated minerals, enough to supply the demand for nuclear power plants Angra I and II for over 100 years. Since the granting of AOP (Permanent Operation Authorization) by CNEN (National Commission on Nuclear Energy) in the year 2009, there were some incidents at the facility, such as: solvents and liquid containing uranium overflow; pipes rupture, causing indiscriminate dispersion of toxic acids and other chemical agents; collapse of parts of the slope of the open pit. CNEN admitted in an official press release on April 1, 2011 that 'INB has no capacity to produce annual reports on environmental monitoring (unable to perform radiometric measurements, etc.). The last time a report was released happened in the year 2008. These reports are vital to the environmental impact assessment of the facility'. Another potential source of environmental and health negative impacts on the local population could be linked to radon emission. What are the levels of this important pollutant in the affected areas? (author)

  1. Amphibians of Serra Bonita, southern Bahia: a new hotpoint within Brazil's Atlantic Forest hotspot.

    Science.gov (United States)

    Dias, Iuri Ribeiro; Medeiros, Tadeu Teixeira; Vila Nova, Marcos Ferreira; Solé, Mirco

    2014-01-01

    We studied the amphibian community of the Private Reserve of Natural Heritage (RPPN) Serra Bonita, an area of 20 km(2) with steep altitudinal gradients (200-950 m a.s.l.) located in the municipalities of Camacan and Pau-Brasil, southern Bahia State, Brazil. Data were obtained at 38 sampling sites (including ponds and transects within the forest and in streams), through active and visual and acoustic searches, pitfall traps, and opportunistic encounters. We recorded 80 amphibian species distributed in 15 families: Aromobatidae (1), Brachycephalidae (3), Bufonidae (4), Centrolenidae (2), Ceratophryidae (1), Craugastoridae (7), Eleutherodactylidae (2), Hemiphractidae (2), Hylidae (42), Hylodidae (1), Leptodactylidae (7), Microhylidae (3), Siphonopidae (1), Odontophrynidae (3) and Pipidae (1). Species richness was positively correlated with monthly rainfall. Near 36% of the species were found in strictly forest environments, 15% are endemic to Bahia State and 77.2% are endemic to the Atlantic Forest biome. The large species diversity of this small area, the high degree of endemism and the taxonomic and biogeographic significance turn the Serra Bonita mountain into a hotpoint for amphibians within Brazil's Atlantic Forest hotspot. PMID:25408616

  2. Amphibians of Serra Bonita, southern Bahia: a new hotpoint within Brazil’s Atlantic Forest hotspot

    Directory of Open Access Journals (Sweden)

    Iuri Dias

    2014-10-01

    Full Text Available We studied the amphibian community of the Private Reserve of Natural Heritage (RPPN Serra Bonita, an area of 20 km2 with steep altitudinal gradients (200–950 m a.s.l. located in the municipalities of Camacan and Pau-Brasil, southern Bahia State, Brazil. Data were obtained at 38 sampling sites (including ponds and transects within the forest and in streams, through active and visual and acoustic searches, pitfall traps, and opportunistic encounters. We recorded 80 amphibian species distributed in 15 families: Aromobatidae (1, Brachycephalidae (3, Bufonidae (4, Centrolenidae (2, Ceratophryidae (1, Craugastoridae (7, Eleutherodactylidae (2, Hemiphractidae (2, Hylidae (42, Hylodidae (1, Leptodactylidae (7, Microhylidae (3, Siphonopidae (1, Odontophrynidae (3 and Pipidae (1. Species richness was positively correlated with monthly rainfall. Near 36% of the species were found in strictly forest environments, 15% are endemic to Bahia State and 77.2% are endemic to the Atlantic Forest biome. The large species diversity of this small area, the high degree of endemism and the taxonomic and biogeographic significance turn the Serra Bonita mountain into a hotpoint for amphibians within Brazil’s Atlantic Forest hotspot.

  3. Industrial radiography in the State of Bahia, Brazil: The health protection of workers

    International Nuclear Information System (INIS)

    This study aimed to identify the Regulatory and Inspection Authority for actions developed by industrial radiography enterprises in the State of Bahia, Brazil, concerning health protection of workers exposed to ionizing radiation in industry. Institutions which legislate about this matter at international, national and State level were identified. These legislations were analysed according to recommendations by the Basic Safety Standards from the Atomic Energy International Agency. Medical Supervision is proposed as a factor to warrant protection to worker's health. This is a service evaluation study, encompassing results, processes and structural components. Emphasis is given to the process component which investigated the adequacy of which is performed by employees and workers. Five enterprises which provide industrial radiography services in the State of Bahia were identified, employing forty workers on a temporary basis. This study also observed: intense workforce, a complete process of contracting out in the sector; inadequate conditions of work organization (long work journey, night work, lack of days-off schedule); inefficiency of medical services responsible by worker's protection concerning radiation specific risks as well as other occupational risks, unrelated to main activity. There is a legal basis for Authorities actions, although it has not been completely implemented. These findings embased the elaboration of a proposal of a Surveillance Program for the Worker Exposed to Industrial Radiation, which includes the setting of safety standards and monitoring of workers exposed to ionization radiation in the occupational environment, accident prevention in this activity and the specialized health care to those affected by radio accidents. (author)

  4. Occupational accidents with exposure to biological material: Description of cases in Bahia

    Directory of Open Access Journals (Sweden)

    Técia Maria Santos Carneiro e Cordeiro

    2016-04-01

    Full Text Available Background and Objective: This study is included in the field of public health in Brazil, in particular occupational health, by the occupational accidents with exposure to biological material consists of a preventable injury. Thus, the objective was to describe risk factors the of occupational accidents with exposure to biological material and the conduct postexposure adopted notified of cases in Notifiable Diseases Information System (SINAN in the State of Bahia in 2012. Methods: This is a descriptive epidemiological study realized with data from the injuries of notifications SINAN in February 2013, the analysis was realized using descriptive statistics in absolute frequencies and relative. Results: The results indicate a higher occurrence of occupational accidents involving exposure to biological materials in Bahia in the female population (78.1% and aged between 30-49 years (51.5%; the blood was fluid larger contact in accidents 75.2% by percutaneous (71.5%; post-exposure procedures were adopted in accordance recommended by the Ministry of Health; divers information were not fulfilled in the notifications and only 23.8% of Occupational Accidents Comunication (CAT were issued. Conclusion: It is considered necessary to draw up strategies on occupational health and safety, consciousness of workers about the relevance of the measures adopted after occupational accidents with exposure to biological material and the training of professionals for case notification and research to fill all the fields of the notification form and also the issuance of CAT.

  5. The Declining Cocoa Economy and the Atlantic Forest of Southern Bahia, Brazil: Conservation Attitudes of Cocoa Planters.

    Science.gov (United States)

    Alger, Keith; Caldas, Marcellus

    1994-01-01

    Causes of the degradation of Brazilian Atlantic Forest in the southeastern cocoa region of the State of Bahia are investigated by means of a survey on cocoa planter's forest conservation attitudes. Policies encouraging private forest conservation, and development of forest-conserving agricultural alternatives for landless poor are recommended. (LZ)

  6. Study on Brazil law type twinning in amethyst from Bahia (Brazil) by the X-ray topography and polarized light

    International Nuclear Information System (INIS)

    Brazil law type twinning is very common in quartz. Generally is not observed in normal petrographic thin section but it is possible to study this kind of twinning under polarized light in thicker sections. X-ray topography will be another powerfull method to study and it was applied for the amethytst of the Mina Cabeluda of the state of Bahia. (author)

  7. Novas espécies de Trichomyia (Diptera, Psychodidae) da Mata Atlântica da Bahia, nordeste do Brasil

    OpenAIRE

    Bravo Freddy

    2002-01-01

    Six new species of Trichomyia from Atlantic rain forest of Bahia, northeastern Brazil, are described: T. itabunensis, T. onorei, T. queirozi, T. silvatica, T. sulbaianensis and T. teimosensis. The first two have palpi with four segments, similar to the other Neotropical species. The other four species have palpi with three segments, similar to other species with wide world distribution.

  8. Novas espécies de Trichomyia (Diptera, Psychodidae da Mata Atlântica da Bahia, nordeste do Brasil

    Directory of Open Access Journals (Sweden)

    Bravo Freddy

    2002-01-01

    Full Text Available Six new species of Trichomyia from Atlantic rain forest of Bahia, northeastern Brazil, are described: T. itabunensis, T. onorei, T. queirozi, T. silvatica, T. sulbaianensis and T. teimosensis. The first two have palpi with four segments, similar to the other Neotropical species. The other four species have palpi with three segments, similar to other species with wide world distribution.

  9. Algae and water pollution in Mahi Estuary

    OpenAIRE

    Jiyalal Ram, M.

    1991-01-01

    Distribution of phytoplankton, chlorophyll A and phaeophytin was studied at different locations in the Mahi Estuary, Gujarat, India during 1982. The water quality at the discharge point was poor while the region away from it was relatively unpolluted. The results indicated a wide range of variation in phytoplankton population (7.68-5010, 96 x 10 super(4) cells/l, chl. a 2.22-58.22 mg/m super(3) and phaeophytin [0.20-10.21 mg/m super(3)]. The ratio of chl. a/phaeophytin were remarkably low at ...

  10. Avaliação do Programa de Triagem Neonatal na Bahia no ano de 2003 Assessment of Bahia Neonatal Screening Program in 2003

    Directory of Open Access Journals (Sweden)

    Alessandro de M. Almeida

    2006-03-01

    Full Text Available OBJETIVOS: descrever e avaliar o perfil do Programa de Triagem Neonatal baiano em 2003. MÉTODOS: estudo descritivo baseado no banco de dados do Serviço de Referência de Triagem Neonatal baiano com todos os recém-nascidos que realizaram a triagem na rede de coleta do Estado em 2003. RESULTADOS: observou-se implantação do programa em 94,5% dos municípios. A média mensal de testados foi de 13.991 (72,51% dos recém-nascidos registrados. Na coleta, 63,9% das crianças estavam com idade entre oito dias e um mês, 14,5% com até sete dias e 21,6% com mais de um mês. A incidência observada foi de 1:22.000 para fenilcetonúria, 1:4.000 para o hipotireoidismo congênito e 1:650 para as hemoglobinopatias. CONCLUSÕES: o Programa de Triagem Neonatal baiano mostrou, em 2003, dificuldades quanto a cobertura preconizada em 100%; a faixa etária ideal para realização da coleta; ao tempo entre a coleta e a chegada das amostras ao Serviço de Referência em Triagem Neonatal; ao tempo de entrega dos resultados à família; e ao tempo de reconvocação dos casos positivos. Assim, são necessárias algumas melhorias para agilizar esses processos.OBJECTIVES: describe and assess the Neonatal Screening Program of Bahia in 2003. METHODS: descriptive study based on the databank of the Neonatal Screening Reference Service of Bahia in all newborns previously screened in the data collecting network of 2003. RESULTS: the program was implemented in 94.5% of the municipalities. The monthly average of newborns assessed was of 13.991 (72.51% of the registered newborns. During data collection, 63.9% of the children were between eight days and one month old, 14.5% seven days old and 21.6% over one month old. The incidence determined was 1:22,000 for phenylketonuria, 1:4,000 for congenital hypothyroidism and 1:650 for sickle cell disease. CONCULSIONS: the Neonatal Screening Program of Bahia in 2003 fell short to the expected coverage of 100%, failed in selecting the

  11. Etiologia do declínio de mangostanzeiros no sul da Bahia Etiology of the decline of mangosteen in the southern Bahia

    Directory of Open Access Journals (Sweden)

    Eduardo César Araújo Paim

    2012-12-01

    Full Text Available O declínio do mangostanzeiro (Garcinia mangostana L. no litoral sul do Estado da Bahia é hoje o principal problema da cultura, sendo caracterizado por sintomas de murcha, amarelecimento, seca e queda de folhas. Este trabalho teve como objetivo acompanhar a evolução da sintomatologia da doença, isolar e identificar os potenciais patógenos causadores do declínio do mangostanzeiro. A doença começa com a necrose das radículas, a qual atinge as raízes secundárias, primárias e progride até à base do tronco que desenvolve lesões necróticas extensas. Os sintomas secundários são clorose, murcha e queda das folhas. Das amostras de tecidos lesionados de plantas doentes levadas ao laboratório, foram isolados e identificados os seguintes fungos: Lasiodiplodia theobromae, Lasiodiplodia parva, Mycoleptodiscus sp., Rhizopus sp., Stilbella sp., Trichoderma spp. e Aspergillus sp. Apenas L. theobromae e L. parva foram patogênicas a fragmentos de raízes e caules de mangostanzeiros in vitro e a mudas de mangostanzeiros em casa de vegetação, sendo o isolado da primeira espécie o mais virulento. A taxonomia do gênero Lasiodiplodia e algumas condições que influenciam no desenvolvimento da doença no campo foram analisadas.The decline of mangosteen (Garcinia mangostana L. in the southern coast of the state of Bahia is today the main problem of the culture, being characterized by symptoms of wilting, yellowing, blight and defoliation. This study was aimed to follow the evolution of the symptoms of the disease, isolate and identify the possible pathogen of mangosteen decline. The disease begins in the roots and progresses toward the canopy, leading to plant death. Samples of infected tissue from diseased plants were taken to laboratory where the following fungal species were isolated and identified: Lasiodiplodia theobromae, L. parva, Mycoleptodiscus sp., Rhizopus sp., Stilbella sp., Aspergillus sp. and Trichoderma spp. Only Lasiodiplodia

  12. Polinização do dendezeiro por besouros no sul da Bahia Pollination of oil palm by weevils in southern Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    José Inácio Lacerda Moura

    2008-03-01

    Full Text Available O objetivo deste trabalho foi determinar a taxa de fecundação de dendezeiros, após introdução de Elaeidobius kamerunicus, no Sul da Bahia, e a flutuação populacional, distribuição espacial e a influência de fatores meteorológicos sobre E. kamerunicus e E. subvittatus. Análises físicas de 12 mil espiguetas de dendezeiros foram realizadas em 2004-2006. Na avaliação da relação entre a temperatura média mensal e o total mensal de indivíduos de E. kamerunicus e E. subvittatus, utilizou-se a correlação de Pearson. A taxa de fecundação foi de 79,4%, um incremento de 19% quando comparado aos dendezeiros polinizados apenas por E. subvittatus. Plantios comerciais de dendezeiros em Ituberá e Nazaré, BA, apresentaram taxas médias de fecundações de 76%. E. kamerunicus foi dominante nos plantios de dendezeiro de Una, BA. Populações de E. kamerunicus sobrepujaram as de E. subvittatus, em todos os municípios onde existem grandes maciços de dendezeiros subespontâneos. No entanto, em Itapebi, BA, as populações de E. subvittatus superaram as de E. kamerunicus. A temperatura e a precipitação pluvial afetam a atividade de vôo e densidade populacional de E. subvittatus.The objective of this work was to determine the fertilization rate of oil palm trees, after the introduction of Elaeidobius kamerunicus in Southern Bahia, Brazil, and the population fluctuation, spatial distribution and the influence of meteorological factors on E. kamerunicus and E. subvittatus. Physical analyses of 12 thousand oil palm spikelets were accomplished during 2004-2006. Pearson correlation was used to evaluate the relation between monthly average temperatures and monthly totals of E. kamerunicus and E. subvittatus individuals. The fertilization rate was 79.4%, an increase of 19% when compared to palm trees pollinated only by E. subvittatus. Commercial plantations of oil palm, in Ituberá and Nazaré, BA, presented 76% mean rates of fertilization. E

  13. Mercury distribution in Douro estuary (Portugal)

    International Nuclear Information System (INIS)

    Determinations of dissolved reactive and total dissolved mercury, particulate and sedimentary mercury, dissolved organic carbon (DOC), particulate organic carbon (POC) and suspended particulate matter (SPM) have been made in the estuary of river Douro, in northern Portugal. The estuary was stratified by salinity along most of its length, it had low concentrations of SPM, typically -3, and concentrations of DOC in the range -3. The surface waters had a maximum dissolved concentration of reactive mercury of about 10 ng dm-3, whereas for the more saline bottom waters it was about 65 ng dm-3. The surface waters had maximum concentrations of total suspended particulate mercury of ∼7 μg g-1 and the bottom waters were always -1. Concentrations of mercury in sediments was low and in the range from 0.06 to 0.18 μg g-1. The transport of mercury in surface waters was mainly associated with organic-rich particulate matter, while in bottom waters the dissolved phase transport of mercury is more important. Lower particulate organic matter, formation of chlorocomplexes in more saline waters and eventually the presence of colloids appear to explain the difference of mercury partitioning in Douro estuarine waters

  14. Study of Bed Friction Factor for the Wu River Estuary

    Institute of Scientific and Technical Information of China (English)

    Chin-Wu LAN; Cyuan-Chen LEE

    2006-01-01

    In this research the bed friction effect is estimated of a river estuary by use of hydrodynamic analysis. The on-site sampled data of the Wu River estuary is applied to the analysis. There are many dynamic factors that affect the flow characteristics in the estuary. The effect of tide on the generation of tidal current, bottom friction and geometry effect is the focus of this paper. The Wu River estuary is about 15 km in length, with a small bottom slope and no physical obstruction; thus the incident wave at the estuary is considered a progressive wave with damping effect. The amplitude reduction and phase shift of the incident wave are analyzed. By the analysis of celerity reduction factor of the estuary, the estimated value of mean resistance coefficient M(μ,κ), damping modulus μ, and wave number κ for the sections at observation stations can be determined. Furthermore, data gathered from on-site observations are applied for validation. Finally, Manning's coefficient for each section of the observation stations can be determined. It is found that the value of Manning's coefficient is small downstream and increases towards upstream, and that the bed friction effect of an estuary varies largely. The estimated results of the paper are compared with the empirical formulas and the modified solution for practical application is discussed.

  15. Temporal Variability of Nutrient Budgets in a Tropical River Estuary

    Directory of Open Access Journals (Sweden)

    Thanomsak Boonphakdee

    2008-01-01

    Full Text Available Water, salt, dissolved inorganic nitrogen (DIN, and dissolved inorganic phosphorus (DIP budgets in the Bangpakong Estuary were conducted by repeated observations and multiple box modeling. Water samples for inorganic nutrient analyses were collected monthly from June 2000 to May 2001. Flushing time at the estuary depicts high variations ranging from 1.4 (October 2000 to 80 days (February 2001 with an annual mean of 15.2 days. Seasonal variation in salinity gradients and estuarine Richardson numbers show the Bangpakong Estuary was partially stratified during the wet season and a well-mixed estuary in the dry season. Riverine nutrient inputs and distributions of nutrient concentrations within the river estuary varied in space and time. Temporal variations in fluxes were strong within inter-seasonal scales owing to water fluxes and system concentrations. The increase of DIN and DIP fluxes in the estuary may be the results of degradation of particulate organic matter. The Bangpakong Estuary appears to be a heterotrophic system where respiration exceeds photosynthesis (p-r < 0 and a denitrifying system. Seasonal variations in biogeochemical rates were attributable to differences in magnitude of freshwater inputs.

  16. PLANT STIMULANT EFFECT ON BRASIL-BAHIA TOBACCO GROWTH AND PRODUCTION EFEITO DE ESTIMULANTE VEGETAL NO CRESCIMENTO E PRODUÇÃO DE FUMO BRASIL-BAHIA

    Directory of Open Access Journals (Sweden)

    Adriana Queiroz de Almeida

    2010-10-01

    Full Text Available

    The purpose of the study was to evaluate the effect of the Stimulate® plant stimulant, applied to leaves by spraying, on tobacco (Nicotiana tabacum L. growth and production. The Brasil-Bahia tobacco and Stimulate®, at the doses of 0.0 mL L-1 (control - water; 1.0 mL L-1; 3.0 mL L-1; 5.0 mL L-1; and 11.0 mL L-1, in watery solution, were used. On the fifteenth day after sowing (DAS, the treatments were applied. A total of six sprayings were made, once a day, each five days. After forty-three DAS, the number of leaves; stem and root length; stem, roots, and leaves dry matter; and leaf area were evaluated, under nursery conditions. In the field, the plants remained for 64 days (107 DAS and the number of leaves; number of viable leaves; plant height; stem and leaves dry matter; and leaf area were evaluated. Stimulate®, under nursery conditions, decreased stem, root and leaf dry matter and leaf area for tobacco. Stimulate® was also efficient to increase the number of leaves and stem length, under nursery conditions, for the Brasil-Bahia tobacco. Under field conditions, Stimulate®, applied during the vegetative stage, was not efficient to increase leaf production, however, it increased stem height and dry matter.

    KEY-WORDS: Nicotiana tabacum L.; leaf pulverization; plant regulator;

  17. Inventário da fauna de Euglossinae (Hymenoptera, Apidae do baixo sul da Bahia, Brasil Inventory of the Euglossinae (Hymenoptera, Apidae fauna of southern Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Edinaldo Luz das Neves

    1997-12-01

    Full Text Available This paper reports the results concerning collection of Euglossinae bees in a mangrove ecosystem in Valença(13º22'08"S and 39º04'20"W, Bahia. These samples were made twice a month, for a year. The chemical baits Citronella, Eucalyptol, Eugenol, Metyl Salicylate and Vanillin attracted 1,144 specimens distributed among twelve species and two genera: Eulaema (Lepeletier, 1841 and Euglossa (Latreille, 1802. The predominam bee species was Eulaema nigrita (Lepeletier, 1841 consisting of 49.4% of the collected specimens, followed by Euglossa cordata (Linnaeus, 1758 with 44.88%, Euglossa imperialis (Cockerell, 1922 with 2.4% and Eulaema meriana flavescens (Friese, 1899 with 1.6%. Theothers species, considering sporadic visitors, Euglossa securigera (Dressler, 1982, Euglossa chalybeata (Friese, 1925, Euglossa liopoda (Dressler, 1982, Euglossa gaianii (Dressler, 1982, Euglossa townsendi (Cockerell, 1904, Euglossa truncata (Rebelo & Moure, 1995, Euglossa melanotricha (Moure, 1967 and Euglossa sapphirina (Moure, 1968 represented together only 1.8% of the total sample. The Euglossinae were more active from October to May. Eucalyptol was the most attractive bait, attracting 1,120 specimens. Methyl Salicylate attracted 17 specimens, followed by Eugenol, which attracted 04 specimens and Vanillin, which attracted 03 specimens. Citronella was not an attractive chemical.

  18. The holocene sequence of the central continental shelf of the State of Bahia, Brazil; A sequencia holocenica da plataforma continental central do Estado da Bahia

    Energy Technology Data Exchange (ETDEWEB)

    Freire, Antonio Fernando Menezes; Dominguez, Jose Maria Landim [PETROBRAS S.A., BA (Brazil). Unidade de Negocios de Exploracao e Producao da Bahia. Ativo de Exploracao Avaliacao e Acompanhamento Geologico]. E-mail: fernandofreire@petrobras.com.br

    2006-05-15

    Fifty cores were recovered from the sea bottom in the central portion of the continental shelf of the State of Bahia, between the Marau Peninsula and the city of Olivenca. Thirty six of these cores were collected by divers at up to 40 m deep waters. Fourteen cores were collected by piston cores in areas ranging from the continental shelf to the upper slope. All cores were described, photographed and sampled for grain size and bio stratigraphic analysis. These data were used to prepare textural and facies maps of the continental shelf. The piston cores were run parallel to sub-bottom profiling surveys. Results show that there is a strong reflector located 3 - 4 m below the sediment- water interface, which limited the penetration of the piston cores. This reflector represents a sequence boundary separating the holocene from the pleistocene sequences. A transgressive system tract has been deposited on the top of this surface along with the early stages of the high stand system tract, particularly on the inner shelf. Because of the starved character of this shelf, notably on its external portion, a detailed application of sequence stratigraphy concepts has not been possible. Only at the inner shelf/shore face there is evident pro gradation of siliciclastics over carbonates. Several submarine valleys dissect the outer shelf/upper slope, thus acting as channels that transport continental shelf sediments to the deeper portions of the basin. (author)

  19. Mass and salt transfers and halocline depths in an estuary

    OpenAIRE

    LONG, ROBERT R.

    2011-01-01

    The paper considers fluxes of brackish and ocean water out of and into an estuary as well as the depth of the halocline in the estuary. The discussion ignores the details of the mass distribution and circulations in the main body of the estuary (except for the halocline depth) and concentrates on determining the flow conditions and interface depths in the vicinity of the mouth. The flow there is considered to be frictionless and the pressure hydrostatic, and the first part of the analysis, wh...

  20. Oysters return to the Tagus estuary through an ecological model

    OpenAIRE

    Bento, Vânia Sofia de Oliveira

    2008-01-01

    Aquaculture is an activity that has been increasing along the last years. Until the 1970’s Portugal and more specifically the Tagus estuary, was the major exporter of oysters in Europe. Factors like TBT and oysters gill disease had made that the shellfish aquaculture has never been again practised in Tagus estuary. According to that, this work intends to concept and to implement an ecological model that develops the oysters growth in order to them return to the estuary. To begin with, the ...

  1. Waterfowl migration and distribution in North West estuaries. V. 1

    International Nuclear Information System (INIS)

    Waterfowl populations may be affected by proposed tidal barrage across the Mersey. This study had three objectives:-(1) to evaluate the patterns of usage of the intertidal flats of the Mersey estuary by waders and wildfowl and to establish which are the preferred areas; (2) to identify the places of origin and movement patterns of the populations of waders and wildfowl that visit the Mersey Estuary; and (3) to evaluate evidence regarding the capacity of British estuaries to absorb waders and wildfowl populations which might be displaced by a Mersey Barrage. The text and tables and results only are presented in Volume 1. (author)

  2. Glacial landform assemblages in the catchment area of the upper Quitarasca valley (Cordillera Blanca, Perú)

    Science.gov (United States)

    Iturrizaga, L.

    2012-04-01

    The research project focuses on the glacial landform sequences in the upper Quitarasca valley (8°51´S/77°36´W) with particular consideration of the Pucahirca glacier. The study area is located at the eastern side of the Cordillera Blanca, about almost 40 km valley upstream of the confluence with the Rio Santa valley. The highest catchment area is the Pucahirca Massif (6020 m a.s.l.). The present glacier tongue terminates at an elevation of 4500 m a.s.l.. The investigations analyzed the extent of the glaciations from the Last Glacial Maximum to modern times in regard to the transition of the moraine types during the course of deglaciation. The distinct moraine stages were correlated with existent glacial chronologies of adjacent valleys. Due to the hazard potential of the Laguna Safuna Alta, which developed in the late 1940s at the terminus of the Pucahirca glacier, detailed studies have been carried out by various research groups in regard to the composition of the historical / Neoglacial moraine composition providing at the same time valuable material for multi-temporal comparison of the recent development of the glacier tongue. The investigations presented here are part of a project on the glacial geomorphology in the Tropical Andes, financed by the Alexander von Humboldt Foundation.

  3. Curva de retención suelo-agua e inicio de monitoreo en Tierra Blanca Joven (TBJ

    Directory of Open Access Journals (Sweden)

    José A. Chávez

    2013-12-01

    Full Text Available En El Salvador durante la época de lluvias o cuando ocurren terremotos, las áreas cubiertas por las tefras volcánicas Tierra Blanca Joven (TBJ sufren movimientos de ladera, licuefacción y erosión provocando pérdidas ambientales, sociales y económicas importantes. Para iniciar la caracterización de estos suelos parcialmente saturados, valores de succión de una unidad de caída de TBJ fueron obtenidos con la olla de presión, centrífuga y papel filtro para construir la Curva de Retención Suelo-Agua. El uso de esta curva en programas de elementos finitos ayuda a conocer los esfuerzos cortantes y la permeabilidad. El papel filtro probó ser un método práctico pero es necesario usar la olla de presión al ir saturándose. Pruebas de campo con tensiómetro (succión y TMS3 (humedad se llevan a cabo para proponer metodología de campo para un sistema de alerta temprana para las laderas, que puede ayudar a la planificación urbana y estudios de riesgo.

  4. Estudio histológico del sistema digestivo en diferentes estadios de desarrollo de la cachama blanca (Piaractus brachypomus

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    Miguel Ángel Mendoza R.

    2013-06-01

    Full Text Available La cachama blanca (Piaractus brachypomus es la segunda fuente de producción piscícola en Colombia, después de la tilapia roja (Oreochomi ssp. y antes de la trucha arcoíris (Oncorhynchus mykiss. Se destaca, además, como una de las especies con mayor potencial productivo en el país. Se realizó el estudio histológico del sistema digestivo de la Piaractus brachypomus a fin determinar la morfología normal en diferentes estadios de desarrollo. Para ello se clasificaron los animales según la edad, el tamaño y el peso en ovas embrionadas, larvas con saco vitelino, alevinos después de reabsorción de saco vitelino, juveniles (3-5 cm, 5-7 cm, 10 cm, 15 cm y adultos (300 g. La fijación de los tejidos se realizó en formaldehído al 3,7 % y se describió microscópicamente cavidad bucal, faringe, esófago, estómago, ciegos pilóricos, intestinos y las glándulas anexas, hígado y páncreas. Por último, se describió macroscópicamente la organización anatómica de este sistema.

  5. PHASE ANALYSES OF URANIUM-BEARING MINERALS FROM THE HIGH GRADE ORE, NOPAL I, PENA BLANCA, MEXICO

    Energy Technology Data Exchange (ETDEWEB)

    M. Ren; P. Goodell; A. Kelts; E.Y. Anthony; M. Fayek; C. Fan; C. Beshears

    2005-07-11

    The Nopal I uranium deposit is located in the Pena Blanca district, approximately 40 miles north of Chihuahua City, Mexico. The deposit was formed by hydrothermal processes within the fracture zone of welded silicic volcanic tuff. The ages of volcanic formations are between 35 to 44 m.y. and there was secondary silicification of most of the formations. After the formation of at least part of the uranium deposit, the ore body was uplifted above the water table and is presently exposed at the surface. Detailed petrographic characterization, electron microprobe backscatter electron (BSE) imagery, and selected x-ray maps for the samples from Nopal I high-grade ore document different uranium phases in the ore. There are at least two stages of uranium precipitation. A small amount of uraninite is encapsulated in silica. Hexavalent uranium may also have been a primary precipitant. The uranium phases were precipitated along cleavages of feldspars, and along fractures in the tuff. Energy dispersive spectrometer data and x-ray maps suggest that the major uranium phases are uranophane and weeksite. Substitutions of Ca and K occur in both phases, implying that conditions were variable during the mineralization/alteration process, and that compositions of the original minerals have a major influence on later stage alteration. Continued study is needed to fully characterize uranium behavior in these semi-arid to arid conditions.

  6. A geologic and geophysic study of the Sierra de Pena Blanca, in the state of Chihuahua, Mexico

    International Nuclear Information System (INIS)

    Within the sistematic aerial exploration program realized by the Instituto Nacional de Energia Nuclear, an aeroradiometric study was carried out in the zone which includes Sierra de Pena Blanca. This study took into consideration the former and present geological investigations and compromised the sierra together with the bordering valleys. The main objective consists in the localization of areas presenting favorable conditions for the existence of uranium isotopes minerlization, in order to determine a mineralized body or ore deposit. For that purpose the area was explored with an airplane to which a differential gamma rays spectrometer was adapted, this spectrometer will show us clearly the integration of the number of radiations which fall into the detectors obtaining this way a valuable information about the radiometric anomalous sites of the studied zone and also about the existence of bismuth, thallium and the abundant potassium of the igneous rocks. These anomalies are under the stage of ground verification, this stage includes a superficial study and the study of the underlying rocks through drilling, radiometric logs and chemical analysis of the samples. In fact, through this method we can obtain very truthful data. (author)

  7. [Identification of schistosomiasis risk areas using spatial analysis in Lauro de Freitas, Bahia State, Brazil].

    Science.gov (United States)

    Cardim, Luciana Lobato; Ferraudo, Antonio Sergio; Pacheco, Selma Turrioni Azevedo; Reis, Renato Barbosa; Silva, Marta Mariana Nascimento; Carneiro, Deborah Daniela M Trabuco; Bavia, Maria Emilia

    2011-05-01

    The spread of schistosomiasis mansoni defies efforts by Brazil's Unified National Health System, thus demonstrating the need to reassess endemic control programs in the country. The aim of this study was to demarcate geographic areas at risk of schistosomiasis in Lauro de Freitas, Bahia State, Brazil, and to establish the epidemiological and socioeconomic profile of the disease in this municipality (county). Kernel density estimator exploratory analysis was used for visual identification of areas at risk. Kulldorff & Nagarwalla's spatial analysis was used to obtain statistically significant clusters and to measure risk. These technologies identified four risk areas for schistosomiasis. Clusters identified within the risk areas were characterized by lower socioeconomic conditions. Multiple correspondence analyses showed a distinct profile for positive patients in the primary cluster. The techniques employed here represent an important methodological acquisition for tracking and controlling schistosomiasis in Lauro de Freitas. PMID:21655841

  8. [Managing comprehensive care: a case study in a health district in Bahia State, Brazil].

    Science.gov (United States)

    Santos, Adriano Maia Dos; Giovanella, Ligia

    2016-01-01

    This study analyzed management of comprehensive care in a health district in Bahia State, Brazil, at the political, institutional, organizational, and healthcare practice levels and the challenges for establishing coordinated care between municipalities. The information sources were semi-structured interviews with administrators, focal groups with healthcare professionals and users, institutional documents, and observations. A comprehensive and critical analysis was produced with dialectical hermeneutics as the reference. The results show that the Inter-Administrators Regional Commission was the main regional governance strategy. There is a fragmentation between various points and lack of communications linkage in the network. Private interests and partisan political interference overlook the formally agreed-upon flows and create parallel circuits, turning the right to health into currency for trading favors. Such issues hinder coordination of comprehensive care in the inter-municipal network. PMID:27027458

  9. [Professional practices in public dental healthcare: case study of two municipal districts, Bahia State, Brazil].

    Science.gov (United States)

    Chaves, Sônia Cristina Lima; da Silva, Lígia Maria Vieira

    2007-01-01

    This paper examines the working facilities and processes of dentists in the primary healthcare systems of two towns in Bahia State, Brazil, striving to analyze the extent to which factors related to dental care, training, placement and professional profiles influence their practices. Semi-structured interviews were conducted with nine dentists in both towns, with work process organization patterns in Municipality C being closer to the structuring principles of Brazil's National Health System than in Municipality E. This seems to be related to management characteristics, with networking links among individual, collective, and preventive clinical activities and planning noted in Municipality C. Despite these differences, the practitioners presented similarities in terms of dual militancy and perceptions of the public and private healthcare fields. The hegemony of the private sector seems to be influencing the professional practices of dentists in the public health system. PMID:18813506

  10. Evaluation of umbu-caja germplasm in the state of Bahia, Brazil

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    Rogério Ritzinger

    2008-01-01

    Full Text Available The umbu-caja is a tree native to the Northeastern region of Brazil, with promising perspectives of economicuse. Aiming to detect variability in the species, 43 umbu-caja genotypes were identified in 14 counties of the state of Bahia,Brazil. Fruits of these genotypes were collected for physical, chemical and physico-chemical analysis. The range of variationof all analyzed traits was large. Among genotypes, there was, however, predominance of pear-shaped to slightly pear-shapedfruits, fruit weight ranging from 15 g to 27 g, pulp/seed index around 2.0, total titratable acidity between 1.5 and 2.6%, totalsoluble solids between 9.0º and 14.0º Brix, and vitamin C content ranging from 3.6 to 16.4 mg ascorbic acid 100g pulp-1. Thepresence of seeds in genotypes ranged from 5 to 100 % of fruits without seeds.

  11. Characterization of organic matter in a sediment Core near the Mataripe refinery, Bahia-Brazil.

    Science.gov (United States)

    Costa, Alexandre Barreto; de Souza, José Roberto Bispo; Zucchi, Maria do Rosário; de Azevedo, Antonio Expedito Gomes; de Argollo, Roberto Max

    2016-04-15

    A sediment core was taken from the Todos os Santos Bay, near the Mataripe Bahia-Brazil refinery. The results of dating, (210)Pb and (137)Cs methods, combined with organic indicators, Polycyclic aromatic hydrocarbons (PAHs), n-alkanes and total organic carbon (TOC), showed significant change with the start of production of the oil fields of Aratu, Itaparica and Dom João (1939-1947) and the construction of the Mataripe refinery (1949-1950). This event was marked by a series of significant changes, including an abrupt increase in TOC and the growth of PAH concentrations and the presence Unresolved/Resolved ratio (UR/R)>4 in n-alkanes fraction, which indicated that the contamination was of petrogenic origin. The δ(13)C of specific n-alkanes compounds showed gradual deplete with the depth. PMID:26920428

  12. Ecological interactions of sea sponges (Animalia, Porifera according to artisanal fishermen from Camamu Bay, Bahia, Brazil

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    Loyana Docio

    2010-09-01

    Full Text Available This article represents the first ethnospongiological study in Brazil, and it aimed at recording artisanal fishermen’s knowledge about sea sponges and their ecological interactions. The study was carried out in the Ilha do Contrato community at Camamu Bay, Bahia State, Brazil. The data were obtained by means of open-ended interviews and projective tests, and followed the usual techniques of ethnographic surveys. The interviewees had knowledge regarding ecological interactions among fish, sea sponges and sponge endofaunal composition. According to the results, there is some congruence between folk wisdom and scientific knowledge. The importance of integrating local knowledge into management and conservation plans designed for the Camamu Bay region, as well as the set of data on ecology of reef communities, should be considered.

  13. Epidemiological profile of assaults in firearms and white gun inside of bahia

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    Felipe Santos Abreu

    2014-10-01

    Full Text Available The present study aimed to trace the epidemiological profile of firearm assaults and melee weapon, no period of 2009 to 2011, in a General Hospital not interior of Bahia. The analysis was performed using descriptive statistics and data presented as absolute and relative frequencies. From the results, 299 hospitalizations were due to aggression by firearms or bladed weapon, with the highest percentage of victims, young men, aged 20-29 years (39.5%. It is necessary the elaboration and implementation of public policies involving the various segments of civil society and organized to deal with this public health issue with a view to adoption of strategies for the prevention and reduction of morbidity and mortality rates.

  14. Thermoluminescence study of quartzite in a gold and uranium mineralized zone (Canavieiras, Jacobina-Bahia)

    International Nuclear Information System (INIS)

    The quartzite of Canavieiras gold mine (Jacobina-Bahia, Brazil) shows in its natural glow curve, a high temperature. The study of the reproductibility of this peak resulted in the standartization of measurement for grain sizes between 80 and 100 mesh. ''In Situ'' total gamma-ray profiles were made using a scintillation detector for the study the distribution of radioactive elements near the pirite, uranium and gold strike. In the interpretation of the profiles it was possible to shown a positive correlation between thermoluminescence and uranium yields. The thermoluminescence peak is sufficiently high temperature peak to let thermoluminescence accumulate at ambient temperatures. It was used in attempt to estimate the time and the event that enitiated the accumulation of thermoluminescence. The result obtained, (7 -+ 4).106 years, may correspond to the last heating of the rocks at relatively recent time. (C.D.G.)

  15. A new species of Leiostracus from Bahia, Brazil (Gastropoda, Pulmonata, Orthalicidae

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    Rodrigo B. Salvador

    2014-03-01

    Full Text Available A remarkable new species of pulmonate snail was recently collected in a small Atlantic Rainforest fragment near the city of Canavieiras, state of Bahia, Brazil, an area known for a high diversity of land snails. It is described herein as Leiostracus fetidus sp. nov. and can be easily identified by its color pattern of irregular brown to black axial stripes on a white to yellow background, a reddish axial band "separating" the white peristome from the rest of the shell and a broad brown spiral band surrounding the umbilical region. Other diagnostic features include a relatively small size, a proto columellar fold and two very weak folds delimiting the basal region of the aperture. This discovery is a reminder of how little this fauna is known and also an alarm for proper conservation of these forest fragments.

  16. A quality assessment of crude palm oil marketed in Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    de Almeida, D. T.

    2013-09-01

    Full Text Available The characteristics of the quality of crude palm oil (CPO and crude palm olein (CPOL produced in the states of Bahia and Pará were investigated. Twelve oil samples were analyzed; 2 (CPO were from Pará (produced industrially, while the other 10 were from Bahia (3 CPOs and 3 CPOLs produced industrially, while 1 CPOL and 3 CPOs were traditionally processed. The chemical analyses included the determination of fatty acid methyl esters (FAME, free fatty acids (FFA%, peroxide value (PV, induction time (IT, total carotenoids (TC and total polar compounds (TPC. The major saturated fatty acids in these samples were palmitic (34.79-42.89 g 100 g–1 and stearic (4.49-5.84 g 100 g–1 acid, and the main unsaturated fatty acids were oleic (37.31-43.69 g 100 g–1 and linoleic (9.04- 12.74 g100 g–1 acid. All samples produced in Bahia exhibited higher FFA (6.77-13.49% and TPC (13.71-19.50% levels than permitted in the international quality standards, unlike the samples produced in Pará. TC, PV and IT ranged from 422.1 to 584.2 mg g–1, 1.32 to 3.7 meq O2 kg–1 oil and 1.72 to 4.66 h, respectively. PV, FFA and TPC were inversely correlated with TC and IT. The use of inappropriate oil extraction processes in Bahia is clearly becoming a food safety problem.Las características de calidad del aceite de palma crudo (CPO y oleína de palma cruda (CPOL producidos en los estados de Bahía y Pará fueron investigados. Se analizaron doce muestras de aceites; 2 (CPO eran de Pará (producido industrialmente, mientras que las otras 10 procedían de Bahía (3 CPOs y 3 CPOLs producidos industrialmente, mientras que 1 CPOL y 3 CPOs fueron procesadas tradicionalmente. El análisis químico incluyó la determinación de ésteres metílicos de ácidos grasos (FAME, ácidos grasos libres (FFA%, índice de peróxido (PV, el tiempo de inducción (TI, los carotenoides totales (TC y el total de compuestos polares (TPC. Los principales ácidos grasos saturados en estas muestras

  17. [Poisonous sting by Tityus stigmurus (Scorpiones; Buthidae) in the state of Bahia, Brazil].

    Science.gov (United States)

    Lira-da-Silva, R M; Amorim, A M; Brazil, T K

    2000-01-01

    The present investigation is a descriptive study regarding the clinical aspects of accidents caused by the scorpion Tityus stigmurus in Bahia, Brazil. We analyzed 237 confirmed cases treated by the Antivenom Information Centre (CIAVE) from 1982 to 1995. Envenomation by T. stigmurus was mainly characterized by local symptoms: pain (94.4%), dormancy (30.0%), edema (17.8%), erythema (17.8), paresthesia (15.6%) and general manifestations such as headache (4.4%), vomiting (4.4%) and sudoresis (3.3%). Most of the envenomation cases were mild (94%) and all were successfully cured. Although T. stigmurus venom is not in the pool of anti-venom serum (SAE), the absence of lethality and benign nature of the cases suggest the efficiency of SAE. With the exception of deaths and systemic complications, envenoming gravity was similar to those of Tityus serrulatus. PMID:10967591

  18. Petrology and geochemistry of the marbles and calcosilicated rocks from Ipira, Bahia - Brazil

    International Nuclear Information System (INIS)

    This work explains a study of marbles and diopsitites from Serra das Panelas, Ipira, Bahia, Brazil. Petrographic analysis, chemistry some elements, trace elements and rare earths, isotopic analysis of Strontium, carbon and oxigen, and geochronological determinations were done. The ages founded correspond to Transamazonic Orogenetic cicle, with Archean age, confirmed by the 18O values found, which give to marble, ages about 2.500 my. The mineralogy and the texture give to marble an invulgar aspect, making a confusion with carbonate. The petrochemical data and the geochemistry of 13C and 18O isotopes showed that the marble and diopsitites was formed from the old marine carbonates. The geochemistry of rare earth suggests a strong correlation with carbonitic and alkaline rocks. An hybrid origem to this rocks is proposed. (C.D.G.)

  19. Ants interacting with fruits of Melocactus conoideus Buining & Brederoo (Cactaceae in southwestern Bahia, Brazil

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    Katielle Silva Brito-Kateivas

    2012-09-01

    Full Text Available The aim of this study was to determine which ant species interact with the fruits of Melocactus conoideus and if there is removal. The study was carried out at Parque Municipal Serra do Periperi, in the town of Vitoria da Conquista, Bahia, Brazil, an area where the species occur. Fruits from 30 individuals were marked and observed during day for identification of the ants behavior. Seven species from five ant subfamilies were observed interacting with the fruits and the genera mostly involved in interactions were Camponotus and Pheidole. Three removal events were observed, performed by Pheidole sp. 2. Although M. conoideus is not a myrmecochorous species, ants were registered as opportunistic dispersing agents, an activity which may have important consequences for the population dynamics of the species.

  20. Back pain in adults living in quilombola territories of Bahia, Northeastern Brazil

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    Luis Rogério Cosme Silva Santos

    2014-10-01

    Full Text Available OBJECTIVE To analyze the factors associated with back pain in adults who live in quilombola territories. METHODS A population-based survey was performed on quilombola communities of Vitória da Conquista, state of Bahia, Northeastern Brazil. The sample (n = 750 was established via a raffle of residences. Semi-structured interviews were conducted to investigate sociodemographics and employment characteristics, lifestyle, and health conditions. The outcome was analyzed as a dichotomous variable (Poisson regression. RESULTS The prevalence of back pain was of 39.3%. Age ≥ 30 years and being a smoker were associated with the outcome. The employment status was not related to back pain. CONCLUSIONS The survey identified a high prevalence of back pain in adults. It is suggested to support the restructuring of the local public service in order to outline programs and access to healthy practices, assistance, diagnosis, and treatment of spine problems.

  1. Aplication of uranium isotopes as tracers in ground water studies (Bambui - Bahia, Brazil)

    International Nuclear Information System (INIS)

    Analyses of 234U/238U activity ratios and the uranium concentration in 42 underground water samples have provided better in formation about the recharge area and the flow direction in the Bambui limestone, Bahia (Brazil). In the main recharge area, the activity ratios were found to range from 3 to 6 and the uranium concentration averaged 1 μg/l. The activity ratio increases northward with the highest values close to 10. The 234U excess from a basic of ratio of activity (fundamental leaching ratio) also increases northward in agreement with the age of the water, an observation confirmed by C-14. This 234U excess is attributed to the alpha-recoil process. The system was calibrated and the age of the waters in the calcareous region was determined. (Author)

  2. Imperfections study of the smoky quartz from Bahia by X-ray diffraction

    International Nuclear Information System (INIS)

    X-ray diffraction techniques were used to study the type of point defects in Smoky quartz from Itambe and Vitoria da Conquista in Bahia. The power method, using the Seemann Bohlin camara (back refletion), was utilized in the analysis of the policrystals, while the monocrystals were studied by means of the precession camara. The positions occupied by the defects in the crystal net were calculated. The results show that while the defects of substitutional impurities predominate in the quartz from Itambe, in the quartz from Vitoria da Conquista the substitutional defects exist in comparable proportions that the interstital ones. Isochronous annealing curves, for both type of smoky quartz indicate an increase in the net parameter to temperature values above the annealing temperatures. Was formulated the hypothesis that providing a thermal energy greater than that of annealing is used, new interstitial defects would be created as a result of a thermic diffusion mechanism. (C.D.G.)

  3. Ethnoentomological studies in the state of Bahia: an homanage to the 50

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    Eraldo Medeiros Costa Neto

    2004-05-01

    Full Text Available This paper discusses the importance of research in ethnoentomology by examining the works which have been carried out in different social and cultural contexts within Bahia State, northeastern Brazil. Such works range from studies in ethnotaxonomy to the use of insects both as food and medicinal resources, as well as their use in the art of philately and advertising. Studies on ethnoentomology can stimulate new ideas to be researched by science, especially those stressing both the therapeutic and protein potential of the insects, thus representing a valuable contribution to the question of biodiversity and opening up possibilities for the economic valorization of species which are normally regarded as harmful or useless.

  4. First records of Zygnematales (Zygnematophyceae, Streptophyta for the state of Bahia, Brazil

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    Ivania Batista de Oliveira

    2013-12-01

    Full Text Available This study presents the first taxonomic inventory of the order Zygnematales in the Litoral Norte Environmentally Protected Area, in the state of Bahia, Brazil. Fifty samples of planktonic and periphytic material were collected, from lotic and lentic environments, during the summer (January-March and winter (June-August of 2009. We identified 18 taxa distributed among five genera (Cylindrocystis, Mougeotia, Netrium, Spirogyra, and Spirotaenia. Of those 18 taxa, eight were new additions to the Brazilian desmid flora: Mougeotia calcarea; Mougeotia elegantula; Spirogyra gracilis; Cylindrocystis crassa var. elliptica; Cylindrocystis brebissonii var. minor; Cylindrocystis brebissonii var. turgida; Netrium digitus var. parvum; and Netrium oblongum var. oblongum. The geographical distributions of ten taxa were extended to include northeastern Brazil.

  5. Areas of natural occurrence of Melipona scutellaris Latreille, 1811 (Hymenoptera: Apidae in the state of Bahia, Brazil

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    Rogério M.O. Alves

    2012-09-01

    Full Text Available The bee Melipona scutellaris is considered the reared meliponine species with the largest distribution in the North and Northeast regions of Brazil, with records from the state of Rio Grande do Norte down to the state of Bahia. Considering the importance of this species in the generation of income for family agriculture and in the preservation of areas with natural vegetation, this study aimed at providing knowledge on the distribution of natural colonies of M. scutellaris in the state of Bahia. Literature information, interviews with stinglessbee beekeepers, and expeditions were conducted to confirm the natural occurrence of the species. A total of 102 municipalities showed records for M. scutellaris, whose occurrence was observed in areas ranging from sea level up to 1,200-meter height. The occurrence of this species in the state of Bahia is considered to be restricted to municipalities on the coastal area and the Chapada Diamantina with its rainforests. Geographic coordinates, elevation, climate and vegetation data were obtained, which allowed a map to be prepared for the area of occurrence in order to support conservation and management policies for the species.A abelha Melipona scutellaris é considerada a espécie criada de meliponíneo com maior distribuição no norte e nordeste do Brasil, com ocorrência registradas desde o Estado do Grande do Norte até o Estado da Bahia. Considerando a importância desta espécie na geração de renda para agricultura familiar e na manutenção de áreas com vegetação natural, este trabalho teve como objetivo conhecer a distribuição de colônias naturais de M. scutellaris no Estado da Bahia. Informações de literatura, entrevistas com meliponicultores e expedições foram realizadas para confirmar a ocorrência natural da espécie. Um total de 102 municípios apresentou registro de M. scutellaris, cuja ocorrência foi observada em áreas desde o nível do mar até 1.200 metros de altitude. A

  6. β-globin haplotypes in normal and hemoglobinopathic individuals from Reconcavo Baiano, State of Bahia, Brazil

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    Wellington dos Santos Silva

    2010-01-01

    Full Text Available Five restriction site polymorphisms in the β-globin gene cluster (HincII-5'ε, HindIII-Gγ, HindIII-ªγ, HincII-'ψβ1 and HincII-3''ψβ1 were analyzed in three populations (n = 114 from Reconcavo Baiano, State of Bahia, Brazil. The groups included two urban populations from the towns of Cachoeira and Maragojipe and one rural Afro-descendant population, known as the "quilombo community", from Cachoeira municipality. The number of haplotypes found in the populations ranged from 10 to 13, which indicated higher diversity than in the parental populations. The haplotypes 2 (+----,3(----+,4(-+--+and6(-++-+onthe βA chromosomes were the most common, and two haplotypes, 9 (-++++and 14 (++--+, were found exclusively in the Maragojipe population. The other haplotypes (1, 5, 9, 11, 12, 13, 14 and 16 had lower frequencies. Restriction site analysis and the derived haplotypes indicated homogeneity among the populations. Thirty-two individuals with hemoglobinopathies (17 sickle cell disease, 12 HbSC disease and 3 HbCC disease were also analyzed. The haplotype frequencies of these patients differed significantly from those of the general population. In the sickle cell disease subgroup, the predominant haplotypes were BEN (Benin and CAR (Central African Republic, with frequencies of 52.9% and 32.4%, respectively. The high frequency of the BEN haplotype agreed with the historical origin of the afro-descendant population in the state of Bahia. However, this frequency differed from that of Salvador, the state capital, where the CAR and BEN haplotypes have similar frequencies, probably as a consequence of domestic slave trade and subsequent internal migrations to other regions of Brazil.

  7. Oral Cancer situation in the state of Bahia: estimates and action perspectives

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    Suélem Maria Santana Pinheiro

    2009-01-01

    Full Text Available Cancer is actually a challenge to Brazilian Public Health, once the number of new cases is growing in last decades. Some studies show that cancer was responsible for 12% of causa mortis in the World, achieving six millions of deaths per year. The aim of this study was to compare oral cancer estimates for Brasil and Bahia state in the years 2006/2007 and 2008/2009, to see the possible evolution of this pathology in the periods and, at same time, find perspectives of action for disease control. For this objective, it was searched the Instituto Nacional do Cancer database for oral cancer incidence estimates for the cited years, observing segregation for sex variable. This way, it was possible to compare both estimates. It was observed in Brasil an increase in the estimated crude incidence rates per 100.000 individuals, with a value of 3,58 in 2006/2007 going to 3,8 in 2008/2009 for females and 10,91 to 11,00 in males. In the state of Bahia, the estimated crude incidence rates increased 2,86 to 3,25 among females and 7,15 to 7,28 among males. However, specifically for the city of Salvador it was noted a decrease in incidence estimates, once the estimated crude incidence rate was 16,00 in 2006/2007 and 14,20 in 2008/2009 for males and 5,72 to 5,21 in females. Educative actions involving health professionals such as physicians, dentists, nurses, health agents and media campaigns that make possible early diagnosis and adoption of preventive measures, consequently improving survival rates and life quality in affected population

  8. Physico-chemical characterization and biometry of fruits of ‘pequi’ in Western Bahia

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    Roxana S. M. Nascimento

    2015-08-01

    Full Text Available ABSTRACTIn Cerrado, there are numerous native fruit species with potential for use in traditional systems of agricultural production. In this context, the ‘pequi’ stands out in this biome by its great economic value in Central Brazil. Therefore, this work aimed to study the physical and physico-chemical characterization of Pequi fruits in the Western Region of Bahia. Three hundred fruits were sampled from ten matrices which were collected in an area of the municipality of Angical, BA and conducted to the Seed Laboratory of the State University of Bahia - UNEB. For physical evaluations, the fruit weight; longitudinal and transversal diameters of the fruit; total weight of seeds per fruit; pulp weight, peel weight and pulp yield were considered. As for the physico-chemical evaluations, the fruit pulp was subjected to the determinations of pH, the soluble solids (SS, titratable acidity (TA and the relation between soluble solids and titratable acidity. For the variables, longitudinal and transversal diameters, the pulp weight, peel weight, seed weight, fruit weight and pulp yield, the mean were, respectively, 63.49 and 61.29 mm, 12.51, 101.91, 27.48, 114.41 g and 11.17%. However, with regard to pH, SS, AT and SS/AT, means were 5.32, 11.95 °Brix, 1.76 and 11.53. The results indicated that there are statistically significant differences between all the physical and physico-chemical variables evaluated.

  9. Cacau "Jaca" resistente a Ceratocystis fimbriata na região cacaueira da Bahia, Brasil Resistance of cacao "Jaca" to Ceratocystis fimbriata in the cacao growing region of Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Stela Dalva V. M. Silva

    2004-10-01

    Full Text Available Cento quarenta e quatro genótipos de cacaueiros (Theobroma cacao testados "in vitro", apresentaram-se suscetíveis a altamente suscetíveis ao isolado 2591 de Ceratocystis fimbriata na Bahia. A variedade conhecida como cacau "Jaca" foi o material genético que apresentou maior resistência ao patógeno entre todos os materias testados.One hundred and forty four cacao (Theobroma cacao genotypes testified "in vitro", showed susceptibility to high susceptibility to the isolate 2591 of Ceratocystis fimbriata in Bahia. The variety known, as cacao "Jaca" was the more genetic material that showed resistance to the pathogen among all the materials tested.

  10. Fauna Triatominae do Estado de Bahia, Brasil.V - Microtriatoma pratai sp. n. Hemiptera, Reduviidae, Triatominae, Bolboderini Triatomidae fauna of the State of Bahia, Brazil. V - Microtriatoma pratai sp. n. - Hemiptera,Reduviidae, Triatominae, Bolderini

    Directory of Open Access Journals (Sweden)

    Ítalo A. Sherlock

    1982-06-01

    Full Text Available Microtriatoma pratai sp. n. de Hemíptera, Reduviidae, Triatominae, Bolboderini, é descrita no presente trabalho com base em um exemplar coletado em domicílio da cidade do Salvador, Estado da Bahia, Brasil. A espécie se distingue facilmente das outras conhecidas do gênero, principalmente por apresentar asas sem manchas e conexivo com largas manchas claras e escuras alternadas.Microtriatoma pratai n. sp. (Hemíptera, reduviidae, Triatominae, Bolboderini is described from a single specimen collected inside a house in the city of Salvador, State of Bahia, Brazil. This species is easily distinguished from the others belonging to the genus principally by the existence of alternating broad light and dark coloured spots on the connexivum and the absence of spots on the hemelytra.

  11. Ocorrência de Platynosomum illiciens em felinos selvagens mantidos em cativeiro no estado da Bahia, Brasil Occurrence of Platynosomum illiciens in enclosured wild cats in the state of Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Letícia S. de Castro

    2008-12-01

    Full Text Available O presente trabalho relata a ocorrência de ovos de Platynosomum illiciens nas fezes de três espécies de felídeos silvestres Herpailurus yagouaroundi, Panthera onca e Leopardus tigrinus coletados nos recintos do Parque Zoobotânico Getúlio Vargas em Salvador, Bahia, Brasil. Sendo o primeiro registro deste parasito em P. onca e F. tigrinus.This paper reports the occurrence of eggs of Platynosomum illiciens, found in the feces of three species of wild cats Herpailurus yagouaroundi, Puma concolor and Leopardus tigrinus from material collected at the enclosures of the Park Zoobotânico Getúlio Vargas in Salvador, Bahia, Brazil. It is the first record of this parasite in P. onca and L. tigrinus.

  12. Fluxes of nitrogen in Chaliyar River Estuary, India

    Digital Repository Service at National Institute of Oceanography (India)

    Xavier, J.K.; Joseph, T.; Paimpillii, J.S.

    contribution of external nutrient supply, nutrient budget, geo-chemical and biochemical pathways . The major source of nitrogen in the estuary is the river discharge. During pre-monsoon period, the percentage of inorganic nitrogen to total nitrogen pool...

  13. Toxicity of sediments and pore water from Brunswick Estuary, GA

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — A chlor-alkali plant in Brunswick, Ga, discharged >2 kg mercury/day into a tributary of the Turtle River-Brunswick Estuary from 1966 to 1971. Mercury...

  14. The application of Yangtze Estuary Tidal Wetlands Geographic Information System

    Institute of Scientific and Technical Information of China (English)

    WANGJun; CHENZhenlou; XUShiyuan; WANGDongqi; LIUJie

    2005-01-01

    Yangtze Estuary Tidal Wetlands Geographic Information System (YETWGIS) is a comprehensive software system for environmental management and decision of Yangtze estuary tidal wetlands. Based on MapObjects components technology, Data Mining technology, mathematical modeling method and Visual Basic language, this software system has many functions such as displaying, editing, querying and searching, spatial statistics and analysis, thematic map compiling, and environmental quality evaluation. This paper firstly outlined the system structure, key techniques, and achieving methods of YETWGIS, and then, described the core modules (the thematic map compiling module and environmental quality evaluation model module) in detail. In addition, based on information entropy model, it thoroughly discussed the methods of environmental quality evaluation and indicators' weight calculation. Finally, by using YETWGIS, this paper analyzed the spatial distribution characteristics of Heavy Metal and Persistent Organic Pollutants (POPs) of the Yangtze estuary tidal wetlands in 2002, and evaluated the environmental quality of the Yangtze estuary tidal wetlands in 2003.

  15. The larvae of decapods and fishes of Amba estuary, Maharashtra

    Digital Repository Service at National Institute of Oceanography (India)

    Paulinose, V.T.; Devi, C.B.L.; Govindan, K.; Gajbhiye, S.N.; Nair, V.R.

    Larvae of fishes and decapods found in zooplankton collections from two stations (Mankule and Patalganga) in Amba estuary adjoining Mumbai harbour were studied during 1989-90 covering three seasons. The percentage contributions of decapods and fish...

  16. St. Louis River Estuary 2011 - 2013 Faucet snail location data

    Data.gov (United States)

    U.S. Environmental Protection Agency — The dataset consists of GPS coordinates for benthic invertebrate collections made in the St. Louis River Estuary in 2011 through 2013, and information on whether...

  17. MODIS water quality algorithms for northwest Florida estuaries

    Science.gov (United States)

    Synoptic and frequent monitoring of water quality parameters from satellite is useful for determining the health of aquatic ecosystems and development of effective management strategies. Northwest Florida estuaries are classified as optically-complex, or waters influenced by chlo...

  18. Primary productivity in Mandovi-Zuari estuaries in Goa

    Digital Repository Service at National Institute of Oceanography (India)

    KrishnaKumari, L.; Bhattathiri, P.M.A.; Matondkar, S.G.P.; John

    -1 Primary productivity in Mandovi-Zuari estuaries in Goa L. Krishna Kumari, P. M. A. Bhattathiri, S.G.P. Matondkar and Julie John National Institute of Oceanography, Dona Paula, Goa - 403 004, India Abstract Measurement on primary production...

  19. Seasonal shift in net ecosystem production in a tropical estuary

    Digital Repository Service at National Institute of Oceanography (India)

    Ram, A.S.P.; Nair, S.; Chandramohan, D.

    phosphorous to the ocean and dissolved inorganic carbon to the atmosphere (Smith and Hollibaugh 1993; Sarma et al. 2001). Our studies suggest that the persistence of net auto- trophy during the nonmonsoon in estuaries could have re- sulted in production...

  20. Evaluating Causes of Ecological Impairments in the Estuaries of Ukraine

    Science.gov (United States)

    Ukrainian estuaries have not undergone a systematic evaluation of the causes of ecological impairments caused by anthropogenic contamination. The objective of this evaluation is to use recently developed diagnostic tools to determine the causes of benthic ecological impairments. ...

  1. Habitat Scale Mapping of Fisheries Ecosystem Service Values in Estuaries

    Directory of Open Access Journals (Sweden)

    Steve J. Jordan

    2010-12-01

    Full Text Available Little is known about the variability of ecosystem service values at spatial scales most relevant to local decision makers. Competing definitions of ecosystem services, the paucity of ecological and economic information, and the lack of standardization in methodology are major obstacles to applying the ecosystem-services approach at the estuary scale. We present a standardized method that combines habitat maps and habitat–faunal associations to estimate ecosystem service values for recreational and commercial fisheries in estuaries. Three case studies in estuaries on the U.S. west coast (Yaquina Bay, Oregon, east coast (Lagoon Pond, Massachusetts, and the Gulf of Mexico (Weeks Bay, Alabama are presented to illustrate our method’s rigor and limitations using available data. The resulting spatially explicit maps of fisheries ecosystem service values show within and between estuary variations in the value of estuarine habitat types that can be used to make better informed resource-management decisions.

  2. Heavy metal accumulation in a flow restricted, tropical estuary

    Digital Repository Service at National Institute of Oceanography (India)

    Balachandran, K.K.; Laluraj, C.M.; Nair, M.; Joseph, T.; Sheeba, P.; Venugopal, P.

    the region among the impacted estuaries in the world. Accumulation of metals in this estuarine system is aggravated by the weak flushing. These pressures are deemed inevitable with growth initiated in the harbour and associated with mega city development...

  3. Sedimentation Dynamics in Bahia de Banderas Nayarit, from Ameca River to Bucerias

    Science.gov (United States)

    Pedroza Ruciles, S.; Cupul Magaña, A.; Escudero Ayala, C.

    2013-05-01

    At last years different actions had made it on the coast in Banderas Bay modifying its dynamics, sand process extractions in Ameca River, deforestation in the zone of estuary and extensions in urban zone affects the beach and coastal dunes. Keeping a lot of sand in circulation which has made changes in erosion process and triggering retrocession in coastline as hazard because an increment of sea level affects edifications near to the beach and estuaries. We present analysis of sedimentation dynamics in an extension approximately, 10 km from the north of the end in Ameca River until Bucerias, Nayarit. For that reason we have made topographic and bathymetric studies with total station and GPS in four zones using technics at the edge of the beach every 109.3613 yards and transversals transect and longitudinal, every 3 months starting in august 2012 and ending in march 2013;

  4. História linguística do sul da Bahia: levantando hipóteses e iluminando caminhos História linguística do sul da Bahia: levantando hipóteses e iluminando caminhos

    Directory of Open Access Journals (Sweden)

    Wagner Carvalho de Argolo NOBRE

    2012-06-01

    Full Text Available The following article has as its goal creating the basis for the working up of a Linguistic history of the South of Bahia. In order to do it, it is used as its theoretical references the principles from sociolinguistic theory – concerning to its conception of language – and from creolistics – concerning to changes induced by the contact of languages. The obtained results are presented in a proposal of periodization of the linguistic history of the South of Bahia, in a survey of its language and speakers’ synoptic chart, observed in the region throughout its history, and in the trial to explain how took place the changing from a multilingual context, at the colonial period, into a unilingual context, nowadays.O trabalho em questão tem como objetivo lançar as bases para a elaboração de uma História linguística do sul da Bahia. Para tanto, utilizam-se como referenciais teóricos os pressupostos da teoria sociolinguística – no que se refere à sua concepção de língua – e da crioulística – no que se refere a mudanças induzidas pelo contato entre línguas. Os resultados obtidos são apresentados em uma proposta de periodização da história linguística do sul da Bahia, em um levantamento do seu quadro de línguas e do perfil de seus falantes, observados na região ao longo de sua história, e na tentativa de explicação de como se deu a mudança de um contexto multilíngue, no período colonial, para um contexto unilíngue, nos dias atuais.

  5. Geophysical exploration with transient electromagnetic soundings in three geothermal zones of Baja California, Mexico: Tres Virgenes, Puertecitos and Bahia Concepcion; Exploracion geofisica con sondeos electromagneticos transitorios en tres zonas geotermicas de Baja California, Mexico: Tres Virgenes, Puertecitos y Bahia Concepcion

    Energy Technology Data Exchange (ETDEWEB)

    Flores, Carlos; Vazquez, Rogelio; Gonzalez, Carlos A; Romo, Jose M; Velasco, Nector; Lopez, Addier [CICESE, Ensenada, B.C. (Mexico)

    1999-04-01

    The results obtained from transient electromagnetic soundings (TDEM) applied to three geothermal zones are briefly commented, emphasizing instead the out of contract work done by the Centro de Investigacion Cientifica y de Educacion Superior de Ensenada (CICESE), both in the application of other geophysical techniques and the subsequent data analysis. This work includes several VLF (very low frequency) electromagnetic profiles in Bahia Concepcion and a magnetotelluric profile in Puertecitos. Regarding the data analysis, an algorithm to assess stratified models was constructed and applied to several Bahia Concepcion soundings and to the TDEM and Schlumberger data from Tres Virgenes in order to compare the resolving powers of these methods. Finally an imaging procedure based on smoothness constraints is being applied nowadays to characterize the geometry of the electric conductors under the Tres Virgenes hot springs. [Spanish] Se comentan los resultados de la aplicacion del modo de sondeo electromagnetico transitorio (TDEM) en tres zonas geotermicas, dando enfasis al trabajo realizado fuera de contrato por el Centro de Investigacion Cientifica y de Educacion Superior de Ensenada (CICESE), tanto en la aplicacion de otras tecnicas geofisicas como en el analisis posterior de los datos. Estos trabajos comprenden el levantamiento de perfiles electromagneticos con el metodo VLF (very low frequency) en Bahia Concepcion y de un perfil magnetotelurico en Puertecitos. En relacion con analisis de los datos, se implemento un algoritmo de evaluacion de modelos estratificados, usandose en sondeos de Bahia Concepcion. Esta tecnica se aplico a los datos TDEM y Schlumberger de Tres Virgenes para comparar sus poderes de resolucion. Finalmente, un procedimiento de construccion de imagenes de resistividad, basado en condiciones de suavidad, se esta aplicando actualmente a los datos de Tres Virgenes para caracterizar la geometria de los conductores electricos bajo las manifestaciones

  6. Reduced river discharge intensifies phytoplankton bloom in Godavari estuary, India

    Digital Repository Service at National Institute of Oceanography (India)

    Acharyya, T.; Sarma, V.V.S.S.; Sridevi, B.; Venkataramana, V.; Bharathi, M.D.; Naidu, S.A.; Kumar, B.S.K.; Prasad, V.R.; Bandyopadhyay, D.; Reddy, N.P.C.; DileepKumar, M.

    . Biogeochemical aspects of Indian estuaries have been mostly studied concerning nutrient dynamics (Mukhopadhyay et al., 2006; Sarma et al., 2010), inorganic and organic carbon biogeochemistry and trace gases(Bouillon et al., 2003; Bouillon et al., 2000; Sarma... of nutrients in Godavari estuary by Sarma et al.(2010).They observed that significant amount of nutrients (>80 µM of dissolved inorganic nitrogen (DIN) and >12 µM of dissolved inorganic phosphate (DIP)) were associated with peak discharge. However, during...

  7. Biota and abiotic environment in the Westerschelde estuary

    OpenAIRE

    Heip, C. H. R.

    1988-01-01

    An estuary such as the Westerschelde is a highly dynamic environment, both on an ecological time scale where climatic and hydrodynamic forces, mainly the tides, shape a very variable environment and on a geological, evolutionary time scale, since estuaries are young and very unstable habitats. Low species diversity and high adaptability of the resident animal and plant populations are characteristic of estuarine habitats where large fluctuations in submersion, salinity, temperature etc. occur...

  8. Functional diversity of fish in estuaries at a global extent

    OpenAIRE

    Rita P. Vasconcelos; Sébastien Villéger; François Guilhaumon

    2015-01-01

    Biodiversity is currently viewed as a framework encompassing multiple facets of the variety of life, including taxonomic and functional aspects. Species richness and composition of fish assemblages in estuaries is defined by global to local processes acting on community colonization. The present study further investigates how biodiversity of fish assemblages varies among estuaries globally, by simultaneously analysing taxonomic and functional richness and diversity of assemblages. A comprehen...

  9. Biological effects of anthropogenic contaminants in the San Francisco Estuary

    Science.gov (United States)

    Thompson, B.; Adelsbach, T.; Brown, C.; Hunt, J.; Kuwabara, J.; Neale, J.; Ohlendorf, H.; Schwarzbach, S.; Spies, R.; Taberski, K.

    2007-01-01

    Concentrations of many anthropogenic contaminants in the San Francisco Estuary exist at levels that have been associated with biological effects elsewhere, so there is a potential for them to cause biological effects in the Estuary. The purpose of this paper is to summarize information about biological effects on the Estuary's plankton, benthos, fish, birds, and mammals, gathered since the early 1990s, focusing on key accomplishments. These studies have been conducted at all levels of biological organization (sub-cellular through communities), but have included only a small fraction of the organisms and contaminants of concern in the region. The studies summarized provide a body of evidence that some contaminants are causing biological impacts in some biological resources in the Estuary. However, no general patterns of effects were apparent in space and time, and no single contaminant was consistently related to effects among the biota considered. These conclusions reflect the difficulty in demonstrating biological effects due specifically to contamination because there is a wide range of sensitivity to contaminants among the Estuary's many organisms. Additionally, the spatial and temporal distribution of contamination in the Estuary is highly variable, and levels of contamination covary with other environmental factors, such as freshwater inflow or sediment-type. Federal and State regulatory agencies desire to develop biological criteria to protect the Estuary's biological resources. Future studies of biological effects in San Francisco Estuary should focus on the development of meaningful indicators of biological effects, and on key organism and contaminants of concern in long-term, multifaceted studies that include laboratory and field experiments to determine cause and effect to adequately inform management and regulatory decisions. ?? 2006 Elsevier Inc. All rights reserved.

  10. Salt intrusion study in Cochin estuary - Using empirical models

    Digital Repository Service at National Institute of Oceanography (India)

    Jacob, B.; Revichandran, C.; NaveenKumar, K.R.

    IN COCHIN ESTUARY 309 as well as the calculated results of Van der Burge models show great correlation between river discharge and salinity intrusion length (Table 1). Two counteracting effects determine the effect of tidal amplitude. Large tidal... since salinity incursion was not strong enough to completely mask the effect of fresh water flow. During the pre-monsoon, the river discharge is minimum and seawater influence is maximum upstream, the estuary is well-mixed and homogeneity exists...

  11. Contamination and restoration of an estuary affected by phosphogypsum releases

    International Nuclear Information System (INIS)

    The Huelva Estuary in Huelva, Spain, has been one of the most studied environmental compartments in the past years from the point of view of naturally occurring radioactive material (NORM) releases. It has been historically affected by waste releases, enriched in radionuclides from the U-decay series, from factories located in the area devoted to the production of phosphoric acid and phosphate fertilizers. Nevertheless, changes in national regulations forced a new waste management practice in 1998, prohibiting releases of phosphogypsum into the rivers. The input of natural radionuclides from phosphate factories to rivers was drastically reduced. Because of this there was a unique opportunity for the study of the response of a contaminated environmental compartment, specifically an estuary affected by tidal influences, after the cessation of the contaminant releases to, in this case, the Huelva Estuary (henceforth referred to as the Estuary). To investigate the environmental response to this new discharge regime, the specific activities of radionuclides 226Ra and 210Pb in water and sediment samples collected in four campaigns (from 1999 to 2005) were determined and compared with pre-1998 values. From this study it is possible to infer the most effective mechanisms of decontamination for the Estuary. Decontamination rates of 210Pb and 226Ra in the sediments and water have been calculated using exponential fittings and corresponding half-lives have been deduced from them. The cleaning half-life in the whole area of the Estuary is about 6 and 3.5 years for 226Ra and 210Pb respectively. The observed trend clearly shows that contamination of the Estuary by natural radionuclides is now decreasing and radioactive levels in waters and sediments are approaching the natural background references. This work attempts to evaluate whether it can be expected that the decontamination of the enhanced levels of natural radioactivity in the Estuary can be performed via natural

  12. Contamination and restoration of an estuary affected by phosphogypsum releases

    Energy Technology Data Exchange (ETDEWEB)

    Villa, M., E-mail: mvilla@us.es [Centro de Investigacion, Tecnologia e Innovacion, Universidad de Sevilla CITIUS, Av. Reina Mercedes 4B, E41012-Sevilla (Spain); Mosqueda, F. [Dpto. de Fisica Aplicada, Facultad de Ciencias Experimentales, Universidad de Huelva, Campus de El Carmen, 21007-Huelva (Spain); Hurtado, S. [Centro de Investigacion, Tecnologia e Innovacion, Universidad de Sevilla CITIUS, Av. Reina Mercedes 4B, E41012-Sevilla (Spain); Mantero, J.; Manjon, G. [E. T. S. Arquitectura, Universidad de Sevilla, Departamento de Fisica Aplicada II, Av. Reina Mercedes, 2. 41012-Sevilla (Spain); Perianez, R. [E.U.I.T.A., Universidad de Sevilla, Departamento de Fisica Aplicada III, Carretera de Utrera, Km. 1, 41013 Sevilla (Spain); Vaca, F. [Dpto. de Fisica Aplicada, Facultad de Ciencias Experimentales, Universidad de Huelva, Campus de El Carmen, 21007-Huelva (Spain); Garcia-Tenorio, R. [E. T. S. Arquitectura, Universidad de Sevilla, Departamento de Fisica Aplicada II, Av. Reina Mercedes, 2. 41012-Sevilla (Spain)

    2009-12-15

    The Huelva Estuary in Huelva, Spain, has been one of the most studied environmental compartments in the past years from the point of view of naturally occurring radioactive material (NORM) releases. It has been historically affected by waste releases, enriched in radionuclides from the U-decay series, from factories located in the area devoted to the production of phosphoric acid and phosphate fertilizers. Nevertheless, changes in national regulations forced a new waste management practice in 1998, prohibiting releases of phosphogypsum into the rivers. The input of natural radionuclides from phosphate factories to rivers was drastically reduced. Because of this there was a unique opportunity for the study of the response of a contaminated environmental compartment, specifically an estuary affected by tidal influences, after the cessation of the contaminant releases to, in this case, the Huelva Estuary (henceforth referred to as the Estuary). To investigate the environmental response to this new discharge regime, the specific activities of radionuclides {sup 226}Ra and {sup 210}Pb in water and sediment samples collected in four campaigns (from 1999 to 2005) were determined and compared with pre-1998 values. From this study it is possible to infer the most effective mechanisms of decontamination for the Estuary. Decontamination rates of {sup 210}Pb and {sup 226}Ra in the sediments and water have been calculated using exponential fittings and corresponding half-lives have been deduced from them. The cleaning half-life in the whole area of the Estuary is about 6 and 3.5 years for {sup 226}Ra and {sup 210}Pb respectively. The observed trend clearly shows that contamination of the Estuary by natural radionuclides is now decreasing and radioactive levels in waters and sediments are approaching the natural background references. This work attempts to evaluate whether it can be expected that the decontamination of the enhanced levels of natural radioactivity in the Estuary

  13. Geology of the area of Bahía Blanca, Darwin's view and the presentknowledge: a story of 10 million years Geología del área de Bahía Blanca, los comentarios de Darwin y elconocimiento actual: una historia de 10millones de años

    OpenAIRE

    Mirta E. Quattrocchio; Cecilia M. Deschamps; Carlos A. Zavala; Silvia C. Grill; Ana M. Borrome

    2009-01-01

    Theaim of this paper is to give an updated outlook of the scenery described byCharles Darwin when he visited Bahía Blanca and surrounding areas, following the itinerary during hisvoyage on board HMS Beagle. Such an outlook is a state of the art of thecurrent understanding of the Late Miocene-Holocene history in the southwestern Pampas (Argentina). Multidisciplinaryresults were integrated in a chronosequence chart synthesizing the suggestedspace-time correlation of the recognized events. Some ...

  14. Conservation of Thane Creek and Ulhas River Estuary, India.

    Science.gov (United States)

    Nikam, Vinay S; Kumar, Arun; Lalla, Kamal; Gupta, Kapil

    2009-07-01

    There has been a steady decrease in the area occupied by wetlands in creeks and estuaries adjacent urban areas due to unprecedented urban growth in coastal cities, for example, Thane Creek and Ulhas River Estuary near Mumbai, India. Urban cities serve as centres of employment and attract a large number of migrants from other places. In case of coastal cities, due to inadequate infrastructure, wastewater and solid waste are disposed of into wetlands and estuary. Discharge of sediments and solid waste into the creeks from drains and construction activities has resulted in decreased flow depth in the coastal waters of Thane Creek and Ulhas River Estuary. Various researchers have studied individual elements of Thane Creek and Ulhas River Estuary at micro level. However, a holistic approach for restoration and conservation of the creek and estuary is required. This paper presents the details of an integrated approach incorporating different conservation measures such as sewerage and sewage treatment, urban drainage management, solid waste management, mangrove plantation and dredging. PMID:21117428

  15. Sources, Ages, and Alteration of Organic Matter in Estuaries

    Science.gov (United States)

    Canuel, Elizabeth A.; Hardison, Amber K.

    2016-01-01

    Understanding the processes influencing the sources and fate of organic matter (OM) in estuaries is important for quantifying the contributions of carbon from land and rivers to the global carbon budget of the coastal ocean. Estuaries are sites of high OM production and processing, and understanding biogeochemical processes within these regions is key to quantifying organic carbon (Corg) budgets at the land-ocean margin. These regions provide vital ecological services, including nutrient filtration and protection from floods and storm surge, and provide habitat and nursery areas for numerous commercially important species. Human activities have modified estuarine systems over time, resulting in changes in the production, respiration, burial, and export of Corg. Corg in estuaries is derived from aquatic, terrigenous, and anthropogenic sources, with each source exhibiting a spectrum of ages and lability. The complex source and age characteristics of Corg in estuaries complicate our ability to trace OM along the river-estuary-coastal ocean continuum. This review focuses on the application of organic biomarkers and compound-specific isotope analyses to estuarine environments and on how these tools have enhanced our ability to discern natural sources of OM, trace their incorporation into food webs, and enhance understanding of the fate of Corg within estuaries and their adjacent waters.

  16. Drinking water: problems related to water supply in Bahía Blanca, Argentina Agua potable: problemas en el abastecimiento de la ciudad de Bahía Blanca, Argentina

    Directory of Open Access Journals (Sweden)

    Ricardo Echenique

    2006-12-01

    Full Text Available In April 2000, alterations in drinking water quality, such as turbidity and odors similar to those of organochloride pesticides, were detected at Bahía Blanca (Argentina. This fact was associated to reports of dermic reactions and respiratory problems in the population. Samples drawn from Paso de las Piedras reservoir, two water treatment plants of at inlet and outlet points and at several particular houses were analyzed. Total phytoplankton in the reservoir varied between 49440 and 84832 cells.ml-1, while dominant species was, Anabaena circinalis. Efficiency to remove microorganisms (ER by the treatment plants considering cell number of total phytoplankton was analyzed. Bacteriological analysis, qualitative and quantitative studies of phytoplankton, pesticides, THM (trihalomethanes and BTEX (benzene, toluene, ethylbenzene and xylene analysis were carried out in samples of domestic supply and in the treatment plants. Even though samples were bacteriological potable, Anabaena circinalis and Microcystis aeruginosa algae were found at high concentrations in some cases. No pesticides were detected. THM and BTEX were below guideline values into recommendations for drinking water. Geosmin was responsible for detected odors. Besides, Copaene, another volatile metabolite, which on account in its structure could be considered a Geosmin precursor, was also detected. In Argentina, this was the first report of Cyanobacteria presence in drinking water.En abril de 2000, en Bahía Blanca (Argentina, se detectaron alteraciones en el agua de bebida, turbidez y olor semejante a "Gamexane". Esto coincidió con la aparición de problemas dérmicos y respiratorios en la población. Para determinar el origen del problema, se analizaron muestras, tomadas en el embalse Paso de las Piedras, en las plantas potabilizadoras y en varios domicilios particulares. En el embalse, la densidad celular del fitoplancton, fluctuó entre 49440 y 84832 cél/ml-1, muy por encima de

  17. Utilization of geophysical nuclear methods on apatite mines from Gaviao and gold from Jacobina mountain - Bahia, Brazil

    International Nuclear Information System (INIS)

    This thesis is part of the sub-project Analysis of Rocks and Minerals by Gamma-Spectrometry of the Program of Research and Postgraduation in Geophysics of the Federal University of Bahia. It presents: 1) the results of preliminary radio-geological surveying in Cenozoic, Mesozoic and Pre-Cambrian lands between the cities of Salvador and Miguel Calmon; detailed radiogeological works in two radioactive anomalous areas: Gaviao at Riachao de Jacuipe town, and Canavieiras mine and vicinities at Jacobina town, state of Bahia. The combined results of field gamma-ray survey, gamma-spectrometry accomplished at laboratory from samples, petrographical and mineralogical studies led to the correlation between apatita mineralization with thorium, and Gold with uranium in the Comglomerates of Serra do Corrego formation giving the possibilities in both cases of making the prospection and exploration by the cintilometry. (author)

  18. Comportamento do mamoeiro Sekati nas condições do oeste da Bahia Behavior of Sekati papaya under conditions of the Western Bahia

    Directory of Open Access Journals (Sweden)

    Osvaldo Kiyoshi Yamanishi

    2006-04-01

    Full Text Available Avaliaram-se as características fenotípicas das plantas e físicas e químicas dos frutos da variedade Sekati e do híbrido Tainung 01 produzidos no oeste da Bahia na primavera e no verão. Nas plantas analisadas na primavera, houve diferença significativa entre a variedade Sekati e o híbrido Tainung 01 para as características: altura de planta, diâmetro do caule, n° de frutos, teor de clorofila e incidência de mancha fisiológica nos frutos, sendo obtidos maiores valores no híbrido Tainung 01. No verão, o comprimento da nervura central e o teor de clorofila não variaram entre as cultivares. A variedade Sekati não apresentou sintomas de mancha fisiológica nos frutos, nas épocas estudadas. Os frutos de 'Sekati' colhidos na primavera apresentaram maiores médias de peso (1.525g, firmeza (3,10kg/cm² e espessura de polpa (31,8cm, pH (5,65 e AT (0,124% ácido cítrico. A vida útil pós-colheita dos frutos das duas cultivares colhidos na primavera e mantidos sob temperatura ambiente foi menor que a dos frutos colhidos no verão; já nos frutos mantidos sob refrigeração, a vida útil foi maior na primavera. A variedade Sekati, apesar de ter apresentado menor quantidade de frutos, destacou-se por apresentar menor altura de planta, maior tolerância à mancha fisiológica dos frutos e valores médios próximos aos do híbrido Tainung 01 para a maioria das características físicas e químicas analisadas.The phenotypic characteristics of the plants and physical and chemical characteristics of fruits of Sekati variety and Tainung 01 hybrid grown under condition of the western Bahia during spring and summer, were evaluated. In the spring, Tainung 01 plants showed significant higher values compared to Sekati in the following characteristics: plant height, stem diameter, fruit number, chlorophyll content and incidence of skin freckles. In the summer, the length of leaf central vein and chlorophyll content did not differ among the genotypes

  19. Perfil antropométrico e consumo alimentar de adolescentes de Teixeira de Freitas - Bahia Anthropometric profile and food intake of adolescents in Teixeira de Freitas - Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Jailda Silva Santos

    2005-10-01

    Full Text Available OBJETIVO: Descrever o perfil antropométrico e o consumo alimentar de adolescentes das escolas públicas de um município do Estado da Bahia. MÉTODOS: Estudo de corte transversal realizado com amostra aleatória por conglomerado de 354 alunos, dos 1.678 adolescentes de dezessete a dezenove anos matriculados nas 23 escolas elegíveis do município. Foram coletados dados sobre freqüência de consumo alimentar qualitativo e indicadores antropométricos, como o índice de massa corporal; pregas cutâneas triciptal e subescapular e o indicador altura/idade, segundo a Organização Mundial da Saúde. Realizou-se análise bivariada e estratificada, sendo a significância estatística verificada pelo qui-quadrado e teste exato de Fischer, com nível crítico de 5%. RESULTADOS: A análise antropométrica evidenciou maior prevalência de sobrepeso e obesidade (5,1% no sexo feminino e de magreza no masculino (6,4%; o déficit de crescimento foi observado em 25,0% dos adolescentes, sendo 15,0% de leve a moderado e 10,0% grave. Evidenciou-se também consumo habitual de arroz, feijão, farinha de mandioca, pão francês, manteiga, margarina, açúcar e café, sendo baixo o consumo de produtos lácteos, frutas, legumes e hortaliças; 96,6% dos adolescentes realizavam mais de três refeições diárias e mais de 80,0% alimentavam-se no domicílio. CONCLUSÃO: Os resultados apontam a necessidade de implementação de estratégias de prevenção dos problemas nutricionais por meio de uma alimentação e um estilo de vida saudáveis, assim como de estudos sobre os possíveis fatores comprometedores do crescimento dos adolescentes.OBJECTIVE: The objective was to describe the anthropometric profile and food intake in adolescents from public schools in a municipality of Bahia, Brazil. METHODS: A cross-sectional experimental design was employed with a random conglomerate sample of 354 adolescents, 17 to 19 years old, from a total of 1.678 students enrolled in 23

  20. Surto de leishmaniose tegumentar americana em Canoa, Santo Amaro, Bahia, Brasil An outbreak of American cutaneous leishmaniasis in Canoa, Santo Amaro, Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Ivonise Follador

    1999-10-01

    Full Text Available Em 1993, um surto leishmaniose tegumentar americana (LTA foi detectado no povoado rural de Canoa, município de Santo Amaro, Bahia. Um estudo observacional prospectivo delineou-se, com objetivo de determinar as taxas de freqüência e caracterizar clinicamente a doença. Foram acompanhados 555 indivíduos, registrando-se 29 casos de LTA, 11 casos sugestivos de LTA pregressa e 529 sadios. Desses 529 sadios, 65 apresentaram reação de Montenegro positiva sem qualquer evidência presente ou passada de doença. A prevalência de LTA no período de estudo foi de 5,2% (29/555. A leishmania envolvida foi caracterizada como Leishmania braziliensis e o vetor, Lutzomyia intermedia. Foram detectados cães e equídeos infectados por leishmania O acometimento de crianças menores de 10 anos, o acometimento igual entre os sexos e um componente de agregação familiar sugerem um padrão de transmissão peri ou intradomiciliar.An outbreak of American cutaneous leishmaniasis (ACL was detected in the village of Canoa in 1993. A prospective observational study was outlined to determine the frequency rates and to clinically characterize the disease. A total of 555 people were followed up. There were 29 cases of ACL, 11 cases of probably previous ACL (scars and 529 healthy individuals. Of these 529 individuals, 65 had a positive Montenegro reaction without any present or past evidence of leishmaniasis. The prevalence of ACL during the two years was 5.2% (29/555. The leishmania involved was Leishmania braziliensis and the vector, Lutzomyia intermedia. Evidence of infection was detected in dogs and horses. The high frequency of the disease among children under ten years, the similar sex distribution of cases and a component of familial aggregation suggest a peri- or intra-domiciliary transmission.

  1. Uma nota sobre ilusionismos e alegorias na pintura barroca de Salvador da Bahia A Note on Illusionism and Allegory in the Baroque Painting of Salvador, Bahia

    Directory of Open Access Journals (Sweden)

    Luís de Moura Sobral

    2008-12-01

    Full Text Available As principais tendências da pintura no Brasil colonial podem ser estudadas na Catedral de Salvador, a igreja do antigo Colégio da Companhia de Jesus. Datando dos finais do século XVII, várias séries de quadros de qualidade diversa, compõem com as esculturas dos altares um soberbo e complexo bel composto de propaganda inaciana. Para decorar o forro da Biblioteca, por cima da sacristia, os Jesuítas encomendaram cerca de 1735-1736 uma monumental quadratura ao pintor português António Simões Ribeiro (?-1755. A pintura é estudada em função da tradição de decoração das bibliotecas durante a época moderna. Para além da quadratura, Simões Ribeiro introduziu na arte brasileira as figuras alegóricas, tornando-se assim o primeiro pintor brasileiro verdadeiramente barroco e o criador da chamada Escola Bahiana.The main trends of the painting in colonial Brazil can be studied in the Cathedral of Salvador, Bahia, the church of the former Jesuit College. Dating from the late 17th Century, several cycles of paintings on the walls and the ceiling of the sacristy, of varying quality, accomplish particular symbolic functions; in conjunction with the sculpture of the altars, they compose a complex bel composto of Jesuit propaganda. To decorate the ceiling of their Library, above the sacristy, the Jesuits commissioned around 1735-1736 a huge quadratura from the Portuguese born painter António Simões Ribeiro (?-1755. This painting is discussed within the tradition of Library decoration in the Modern period. Besides the quadratura, Simões Ribeiro introduced in the Brazilian art the allegorical figures and became the first full-Baroque painter in Brazil and the initiator of the so-called Bahian School.

  2. Evaluation of exploitation alternatives of iron - titanium - vanadium ore from Campo Alegre de Lourdes (Bahia-Brazil)

    International Nuclear Information System (INIS)

    An evaluation of experiences carried out in order to develop an economic process for vanadium, is presented. The attempts which are being developed in the Metallurgical Engineering Program at COPPE/UFRJ, are described, and the other technical and economical possibilities of existing technologies, are analysed. The advantages and disadvantages of integrated steel making process to recover iron, titanium and vanadium contained in the ore from Campo Alegre de Lourdes deposit, in Bahia-Brazil are considered. (Author)

  3. “Shark is the man!”: ethnoknowledge of Brazil’s South Bahia fishermen regarding shark behaviors

    OpenAIRE

    Barbosa-Filho, Márcio Luiz Vargas; Schiavetti, Alexandre; Alarcon, Daniela Trigueirinho; Costa-Neto, Eraldo Medeiros

    2014-01-01

    Background Fishermen’s knowledge is a source of indispensable information in decision-making processes related to efforts to stimulate the management and conservation of fishing resources, especially in developing countries. This study analyzed the knowledge of fishermen from three municipal areas of Bahia in northeast Brazil regarding the behavior repertoire of sharks and the possible influence that these perceptions may have on the inclination to preserve these animals. This is a pioneering...

  4. Analysis of Cookiecutter shark Isistius spp. (Squaliformes; Dalatiidae) bites in cetaceans (Mammalia; Cetacea) on the Bahia coast, northeastern Brazil

    OpenAIRE

    Cláudio L. S. Sampaio; Rodrigo Maia-Nogueira; José de Anchieta Cintra da Costa Nunes; Janete Gomes Abrão Oliveira; Luciano Raimundo Alardo Souto

    2007-01-01

    Few studies have registered signs of mutilation on cetaceans in Brazil, especially from shark attacks. This work describes interactions between cookiecutter sharks Isistius spp. and cetaceans through the analysis of bite records for cetacean carcasses washed ashore on the Bahia coast between 1996 and 2005. Twenty bite records were analyzed in 13 cetacean species, of which the Delphinidae family was the most frequent. After the analysis, Isistius plutodus was identified as the aggressor specie...

  5. “Smart fish that can see at a distance”: Traditional ichthyological knowledge in the Chapada Diamantina region, Bahia

    OpenAIRE

    Eliane Maria de Souza Nogueira; José Geraldo Wanderley Marques; Flávia de Barros Prado Moura

    2008-01-01

    This paper examines the traditional ichthyological knowledge of a community of fishermen that live in the Marimbus-Iraquara environmental protection area (Bahia, Brazil). Data were collected using open and semi-structured interviews and field observation. Also, zoological materials were collected. Knowledge about the behavior of 21 fish species is reported. The ethological phenomena perceived by the fishermen were divided into 17 ethological categories related to reproduction, flight behavior...

  6. Briófitas de uma área de cerrado no município de Alagoinhas, Bahia, Brasil

    OpenAIRE

    Bôas-Bastos, Silvana B. Vilas; Bastos, Cid José Passos

    1998-01-01

    In a taxonomic survey carried out in cerrado vegetation from Alagoinhas county, State of Bahia, 15 species of Bryophyta, were identified distributed into 12 genera and 9 families, and 12 species of Hepatophyta distributed in 7 genera and 2 families. Cheilolejeunea rigidula (Mont. ) Schust., Diplasiolejeunea cobrensis Gott. ex Steph., Diplasiolejeunea rudolphiana Steph., Frullanoides corticalis (Lehm. & Lindenb.) van Slag., Frullania neesii Lindenb., Lejeunea glaucescens Gott. and Leucolejeune...

  7. Potential of heavy minerals in the Valenca-Itacare, Bahia (Brazil) region - Sampling characterization and ore processing

    International Nuclear Information System (INIS)

    Important heavy minerals deposits were discovered by CBPM in the townships of Nilo Pecanha and Marau, state of Bahia. Ore dressing tests were conducted at CETEC and the results indicate a good potential. Tests were carried out with the Humphreys spiral, with magnetic and electro-static separators were yielding concentrates of ilmenite with 56.0% TiO2 and Zircon with 65.0% ZrO2. (author)

  8. INFESTAÇÃO DO MOLEQUE DA BANANEIRA EM VARIEDADES DE BANANEIRA, NA REGIÃO DE INHAMBUPE - BAHIA

    Directory of Open Access Journals (Sweden)

    Genésio Tâmara Ribeiro

    2009-01-01

    Full Text Available It was evaluated banana weevil infestation in six varieties of banana, in the region of Inhambupe - Bahia, using itself of traps of the type "cheese". The biggest level of infestation occurred in the variety Great Naine, that was statistical significant, with 972 captured insects, average of 7,59 insects/traps. The other varieties presented low index of infestation. With exception of Tap Maeo.

  9. Expanding the primary health care workforce through contracting with nongovernmental entities: the cases of Bahia and Rio de Janeiro

    OpenAIRE

    Ireland, Megan; Cavalini, Luciana; Girardi, Sabado; Araujo, Edson C.; Lindelow, Magnus

    2016-01-01

    Background Brazil has experienced difficulties in attracting health professionals (especially doctors and nurses) to practice at the primary health care (PHC) level and in rural and remote areas. This study presents two case studies, each a current initiative in contracting for primary health services in Brazil: one for the state of Bahia and the other for the city of Rio de Janeiro. The two models differ considerably in context, needs, modalities, and outcomes. This article does not attempt ...

  10. Abundance of the brown sea cucumber Isostichopus fuscus at the National Park Bahia de Loreto, México

    OpenAIRE

    Reyes-Bonilla, H.; M.D. Herrero-Pérezrul; S. González-Romero; A. González-Peralta; Y. Ramírez-Hernández

    2008-01-01

    The Natural Protected Area Parque Nacional Bahia de Loreto, including five adjacent islands, was created in 1996. The park presents rocky and sandy shores, mangrove areas and small patches of reef corals, which have been used for fishing and ecotourism activities. The fishery of the brown sea cucumber Isostichopus fuscus is one of the most peculiar in the Gulf of California since early nineties and in the Park the fishery takes place since 2000 under special permits known as UMAS (units for w...

  11. Plants used in the treatment of leishmanial ulcers due to Leishmania (Viannia) braziliensis in an endemic area of Bahia, Brazil

    OpenAIRE

    Flávio França; Ednaldo L. Lago; Philip D. Marsden

    1996-01-01

    This paper records the plants used in the treatment of cutaneous leishmaniasis due to Leishmania (Viannia) braziliensis (L(V)b) among the rural population of a cocoa- producing coastal area of Bahia state, Brazil. An enquiry conducted among a hundred patients identified 49 plant species used to treat skin ulceration caused by this Leishmania species. The principal plants used are caju-branco (Anacardium occidentale - Anacardiaceae), used by 65% of the population, folha-fogo (Clidemia hirta - ...

  12. Frequency of antibodies against Sarcocystis neurona and Neospora caninum in domestic cats in the state of Bahia, Brazil

    OpenAIRE

    Iris Daniela Santos de Meneses; Müller Ribeiro Andrade; Rosângela Soares Uzêda; Marta Vasconcelos Bittencourt; David Scott Lindsay; Luís Fernando Pita Gondim

    2014-01-01

    Sarcocystis neurona is the major agent of equine protozoal myeloencephalitis. It infects several mammalian species in the Americas, where the definitive hosts, marsupials of the genus Didelphis (D. virginiana and D. albiventris) are found. Domestic cats are one of the confirmed intermediate hosts of the parasite; however, antibodies against S. neurona had never before been demonstrated in Brazilian cats. The aim of this study was to determine whether cats in Bahia, Brazil, are exposed to the ...

  13. Seismic refraction technique aplications in the geotechnical characterization of the Cachoeira deposit massif, Caetite, State of Bahia, Brazil

    International Nuclear Information System (INIS)

    Geophysical surveys throught the Cachoeira Uranium deposit massif were carried out with the purpose of assisting in the geotechnical characterization for the implantation of the Mining-Industrial Complex projects on the Lagoa Real uranium deposits, Caetite municipality, state of Bahia, Brazil. This study discusses the methodology utilized in the geophysical surveys and their results as well as their applications to the geotechnical characterization as a whole. (D.J.M.)

  14. INOCULATION AND ISOLATION OF PLANT GROWTH-PROMOTING BACTERIA IN MAIZE GROWN IN VITÓRIA DA CONQUISTA, BAHIA, BRAZIL

    OpenAIRE

    Joelma da Silva Santos; Tarciana de Oliveira Viana; Cristina Meira de Jesus; Vera Lúcia Divan Baldani; Joilson Silva Ferreira

    2015-01-01

    Maize is among the most important crops in the world. This plant species can be colonized by diazotrophic bacteria able to convert atmospheric N into ammonium under natural conditions. This study aimed to investigate the effect of inoculation of the diazotrophic bacterium Herbaspirillum seropedicae (ZAE94) and isolate new strains of plant growth-promoting bacteria in maize grown in Vitória da Conquista, Bahia, Brazil. The study was conducted in a greenhouse at the Experimental Area of the Uni...

  15. Business location: strategic factor for the development of regions? One approach on industrial location policy of Bahia

    OpenAIRE

    Spinola, Noelio; Spinola, Carolina; Pereira, Aliger

    2015-01-01

    In this paper we present a critical analysis of industrial location policy of the state of Bahia, in the period covered in between 1960s and 2000s, from the perspective of spatial economy. The paper reviews the formulation of the theory of location, through the contributions of its principal authors, evidencing the changes occurring in its epistemological basis with the advent of new transports and communication technologies. Through documentary research were analyzed localization strategy of...

  16. Situação epidemiológica da brucelose bovina no Estado da Bahia Epidemiological situation of bovine brucellosis in the State of Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    A.J.S. Alves

    2009-11-01

    Full Text Available O trabalho consistiu em estratificar o Estado da Bahia em quatro regiões com características homogêneas (circuitos produtores para que fossem amostradas aleatoriamente, em cada uma delas, 300 propriedades. Em cada propriedade foram escolhidas, de forma aleatória, 10 a 15 fêmeas bovinas adultas, das quais foi obtida uma amostra de sangue. No total, foram amostrados 10.816 animais, provenientes de 1.413 propriedades. O protocolo de testes utilizado foi o da triagem com o teste do antígeno acidificado tamponado (Rosa Bengala e a confirmação dos positivos com o teste do 2-mercaptoetanol. O rebanho foi considerado positivo se pelo menos um animal reagiu às duas provas sorológicas. As prevalências de focos e a de fêmeas adultas soropositivas do Estado foram de 4,2% [3,1-5,3%] e 0,66% [0,41-0,93%], respectivamente. Para os circuitos produtores foram: circuito 1, 5,8% [3,6-8,7%] e 0,86% [0,41-1,3%]; circuito 2, 3,1% [1,5-5,6%] e 1,2% [0,25-2,1%]; circuito 3, 6,3% [4,0-9,3%] e 1,7% [0,66-2,7%]; e circuito 4, 0,60% [0,07-2,2%] e 0,07 [0,00-0,21%]. Para a análise de fatores de riscos associados à doença foi aplicado um questionário epidemiológico em cada propriedade visitada. Os fatores de risco (odds ratio, OR associados à condição de foco foram: compra de reprodutores (OR= 2,27 e presença de áreas alagadiças (OR= 1,76. A vacinação de fêmeas de três até oito meses de idade foi um fator de proteção (OR= 0,53.A study to characterize the epidemiological situation of bovine brucellosis in the State of Bahia was carried out in 2004. The State was divided into four similar production regions, 300 herds were randomly sampled in each region, and 10 to 15 adult bovine females were sampled in each of these herds. A total of 10,816 serum samples from 1,413 herds were collected. The serum samples were screened for antibodies to Brucella spp. by the Rose-Bengal Test (RBT, and all RBT-positive sera were re-tested by the 2-mercaptoethanol

  17. Revisión: degradación de plaguicidas mediante hongos de la pudrición blanca de la madera.

    OpenAIRE

    Quintero Díaz, Juan Carlos

    2012-01-01

    Los hongos de la pudrición blanca de la madera, se han caracterizado por su capacidad para degradar y mineralizar la lignina empleando un sistema enzimático extracelular compuesto principalmente de tres enzimas Ligninoperoxidasa (LiP), Manganeso peroxidasa (MnP) y Lacasa. Durante los últimos veinte años se ha orientado la atención a estos hongos y su sistema enzimático ligninolítico para estudiar la capacidad para degradar un amplio rango de compuestos xenobióticos como plaguicidas, colorante...

  18. Variación estacional del uso y preferencia de los tipos vegetacionales por el venado cola blanca en un bosque tropical de Jalisco

    OpenAIRE

    S. Mandujano; S. Gallina; G. Arceo; L. A. P\\u00E9rez Jim\\u00E9nez

    2004-01-01

    El venado cola blanca (Odocoileus virginianus) habita el bosque tropical de Chamela en la costa Pacífica del estado de Jalisco, México. En esta región la vegetación dominante es el bosque tropical caducifolio el cual se establece en las colinas y se caracteriza porque en el estrato arbóreo y sotobosque dominan especies que pierden sus hojas durante seis a siete meses en la época seca. En contraste, la vegetación que se encuentra a lo largo de los arroyos y ríos es el bosque tropical subperenn...

  19. El rururbano: un espacio de vulnerabilidad y riesgo. estudio cualitativo en la ciudad de bahía blanca, provincia de buenos aires, argentina

    OpenAIRE

    Santarelli Serer Silvia Alicia; Sereno Claudia A.

    2012-01-01

    El trabajo caracteriza el rururbano —límite externo del periurbano— de la ciudad de Bahía Blanca, provincia de Buenos Aires (Argentina), como un espacio expuesto al crecimiento urbano y como un ámbito de fragilidad y vulnerabilidad para quienes habitan estas zonas. Para ello se puntualiza en el riesgo que corren los residentes del borde frente a la amenaza de modificar sus modos de vida y de perder sus propiedades ante el avance urbano. Los resultados permiten precisar las fortalezas y debili...

  20. Comparación de Peso Entre Dos Protocolos de Crianza Artificial de venados cola blanca (Odocoileus virginianus) en el Altiplano Central de México

    OpenAIRE

    Karen Montaño-Suárez

    2014-01-01

    En el altiplano central de México, el aprovechamiento sustentable del venado cola blanca (Odocoileus virginianus) a través de la caza deportiva, ha permitido el desarrollo de nuevas empresas de prestación de servicios cinegéticos. Cuando se habla de los nuevos agronegocios se puede mencionar a los ranchos cinegéticos que son predios rústicos particulares, destinado a la producción ganadera o forestal y que se dedican a la reproducción y aprovechamiento económico de diferentes especies de la f...

  1. TOXICIDAD AGUDA Y LESIONES HISTOPATOLÓGICAS EN CACHAMA BLANCA (Piaractus brachypomus) EXPUESTAS A LA MEZCLA DE HERBICIDA ROUNDUP® MÁS SURFACTANTE COSMOFLUX® 411F

    OpenAIRE

    Pedro Eslava M; Hover Vidal B; Iang Rondón B; Wilson Ramírez D

    2009-01-01

    Objetivo. Determinar la concentración letal 50 (CL50) y lesiones anatomopatológicas inducidas por la exposición a la mezcla del herbicida Roundup® más el surfactante Cosmoflux® 411F en juveniles de cachama blanca (Piaractus brachypomus). Materiales y métodos. Ejemplares de 44.5 ± 3.7 g de peso fueron expuestos por 96 h a varias concentraciones de la mezcla herbicida más surfactante. Se registró la mortalidad al cabo de las 96 h y se tomaron muestras de tejidos para evaluación histopatológica....

  2. Andamios de experiencias : Conflictividad obrera, vigilancia y represión en Argentina. Bahía Blanca, 1966-1976

    OpenAIRE

    Zapata, Ana Belén

    2014-01-01

    El objetivo general de esta investigación es reconstruir las experiencias de obreros sindicalizados y no sindicalizados atravesados por situaciones de conflictividad y represión en la ciudad de Bahía Blanca durante el período 1966-1976. Nos proponemos analizar cómo los trabajadores construyeron históricamente su experiencia y cómo se constituyeron a través de ella. En segundo término, y como un eje transversal de la tesis, pretendemos analizar a través de las experiencias cómo se desarrol...

  3. Comportamiento de las relaciones hídricas en la albahaca blanca (Ocimum basilicum L.) al ser irrigadas con diferentes volúmenes de agua

    OpenAIRE

    Barroso, L; E. Jerez

    2000-01-01

    El presente trabajo se desarrolló en el Instituto Nacional de Ciencias Agrícolas (INCA), con el objetivo de estudiar los requerimientos hídricos de la albahaca blanca (Ocimum basilicum L.). Para ello se establecieron diferentes niveles de humedad en el suelo, evaluándose el potencial hídrico, la conductancia estomática y el contenido relativo de agua, así como las masas fresca y seca de la parte aérea. Del análisis de los resultados se obtuvo que la aplicación del 75 % del balance de evapo...

  4. Análisis de las experiencias colombianas de manejo ex situ de venado cola blanca (Odocoileus virginianus) como a porte a su conservación

    OpenAIRE

    López Arévalo Hugo Fernando; Guzmán Lenis Angélica Rocío

    2006-01-01

    El venado cola blanca (Odocoileus virginianus) es una de las especies que ha sido más utilizada en el continente
    americano a lo largo de su historia, debido a que presenta una alta productividad, plasticidad y gran valor estético. Debido a la disminución de algunos núcleos poblacionales de la especie y el aumento de la población en cautiverio, se generó información de la especie a partir de los individuos cautivos, para plantear alternativas de uso y manejo, como aporte a la conser...

  5. Compuestos hidrofóbicos y actividad microbiológica en andisoles repelentes al agua de la cuenca de la quebrada Piedras Blancas, Antioquia, Colombia

    OpenAIRE

    Caballero Mejía, Bibiana

    2014-01-01

    Resumen: De la caracterización química y microbiológica de Andisoles repelentes al agua de la cuenca de la quebrada Piedras Blancas, se pueden resaltar los siguientes resultados: Tal como se ha observado en anteriores trabajos, estos suelos también presentaron bajo nivel de fertilidad y cumplieron con todas las exigencias de las propiedades ándicas. Presentaron alto contenido de materia orgánica, con bajo grado de humificación y de baja calidad. Además, no se encontró relación entre e...

  6. Evaluación de impacto ambiental: Fibra de vicuña en la Reserva Nacional Salinas y Aguada Blanca

    OpenAIRE

    Evaristo López Tejeda

    2009-01-01

    El siguiente estudio ambiental contribuye al "Proyecto de Encadenamientos Productivos Sostenibles en Áreas Naturales Protegidas" del Perú. Dado que una de las principales actividades económicas de las comunidades campesinas peruanas es la obtención de fibra de vicuña, se realiza el presente Estudio de Impacto Ambiental sobre los efectos en el medio ambiente con el fin de levantar información sobre los recursos en la Reserva Nacional Salinas y Aguada Blanca y sus principales amenazas, con espe...

  7. Assessing the variability of glacier lake bathymetries and potential peak discharge based on large-scale measurements in the Cordillera Blanca, Peru

    Science.gov (United States)

    Cochachin, Alejo; Huggel, Christian; Salazar, Cesar; Haeberli, Wilfried; Frey, Holger

    2015-04-01

    Over timescales of hundreds to thousands of years ice masses in mountains produced erosion in bedrock and subglacial sediment, including the formation of overdeepenings and large moraine dams that now serve as basins for glacial lakes. Satellite based studies found a total of 8355 glacial lakes in Peru, whereof 830 lakes were observed in the Cordillera Blanca. Some of them have caused major disasters due to glacial lake outburst floods in the past decades. On the other hand, in view of shrinking glaciers, changing water resources, and formation of new lakes, glacial lakes could have a function as water reservoirs in the future. Here we present unprecedented bathymetric studies of 124 glacial lakes in the Cordillera Blanca, Huallanca, Huayhuash and Raura in the regions of Ancash, Huanuco and Lima. Measurements were carried out using a boat equipped with GPS, a total station and an echo sounder to measure the depth of the lakes. Autocad Civil 3D Land and ArcGIS were used to process the data and generate digital topographies of the lake bathymetries, and analyze parameters such as lake area, length and width, and depth and volume. Based on that, we calculated empirical equations for mean depth as related to (1) area, (2) maximum length, and (3) maximum width. We then applied these three equations to all 830 glacial lakes of the Cordillera Blanca to estimate their volumes. Eventually we used three relations from the literature to assess the peak discharge of potential lake outburst floods, based on lake volumes, resulting in 3 x 3 peak discharge estimates. In terms of lake topography and geomorphology results indicate that the maximum depth is located in the center part for bedrock lakes, and in the back part for lakes in moraine material. Best correlations are found for mean depth and maximum width, however, all three empirical relations show a large spread, reflecting the wide range of natural lake bathymetries. Volumes of the 124 lakes with bathymetries amount to 0

  8. EFECTOS DE PERÍODOS CORTOS DE ESTRÉS E INOCULACIÓN MICORRÍZICA EN EL COMPORTAMIENTO DE LA ALBAHACA BLANCA (O. basilicum L.)

    OpenAIRE

    E. Jerez; Barroso, L; O. Cartaya

    2004-01-01

    El trabajo se realizó con el objetivo de valorar el tiempo óptimo de suspensión del suministro de agua antes del corte y su efecto en la producción de aceites esenciales, así como la contribución que realiza la inoculación micorrízica sobre el estado hídrico y algunas variables del crecimiento, en plantas de albahaca blanca (Ocimum basilicum L.) desarrolladas en recipientes de seis litros de capacidad, con un sustrato formado por suelo y materia orgánica del tipo cachaza en una relación 3:1 v...

  9. Influencia sobre parámetros biológicos de Tagosodes orizicolus relacionados con el Virus Hoja Blanca y su permanencia en invernaderos.

    OpenAIRE

    Rafael Meneses; Mónica Triana; Lee Calvert

    2007-01-01

    Con el objetivo de determinar la influencia que ejerce el Virus Hoja Blanca (VHB) sobre el insecto, se estudiaron tres colonias de T. orizicolus, procedentes de diferentes zonas arroceras de Colombia (Tolima, Costa y Jamundí) En las colonias de Costa (3 años) y Tolima, (9 meses), de multiplicación en condiciones semicontroladas de invernadero, no se encontró influencia negativa del virus en la longevidad de machos y hembras, y la fecundidad diaria, no ocurriendo de modo semejante en los ...

  10. Estudio del comportamiento de los recargues multicapas de depósitos soldados de fundición blanca al cromo

    OpenAIRE

    R. Collazo-Carceller; H. López Salinas

    2009-01-01

    Se determina la influencia de los parámetros Energía introducida (Hi), Número de capas (Nc) y Ancho del depósito (Ad), en la morfología y el incremento de la resistencia al desgaste abrasivo de capas depositadas sobre acero 1020 utilizando el electrodo de fundición blanca al cromo UTP Ledurit – 61. Empleando la microscopia óptica se identificaron y cuantificaron las fases presentes, analizando su efecto en el desgaste. Siendo determinante la influencia de la inclinación de las dendritas y su...

  11. Desarrollo de metodología para la determinación de la digestibilidad de materias primas no convencionales en cachama blanca Piaractus brachypomus

    OpenAIRE

    Clavijo Restrepo, Laura Cristina

    2011-01-01

    Este trabajo pretendió, adaptar la metodología de stripping (masaje abdominal), para recolectar heces fecales de Cachama blanca Piaractus brachypomus, y determinar la digestibilidad fecal aparente de combinaciones de cuatro materias primas no convencionales: caupí, bore, zapallo y yuca, en cuatro dietas, con un diseño experimental de bloques completos al azar, en la Granja Académica y Experimental El Cairo, de la Universidad Nacional de Colombia Sede Orinoquia, en Arauca (Arauca). Durante su ...

  12. Characterization and Relocation of Seismic Clusters in the Area of Bahia de Banderas, Jalisco-Nayarit, Mexico

    Science.gov (United States)

    Rutz Lopez, M.; Nunez-Cornu, F. J.; Carmona, E.

    2004-12-01

    We analysed the seismic activity that took place the year of 2003 in the area of Bahia de Banderas, between the states of Jalisco and Nayarit, registrated with a local network of 7 stations, which belongs to the Civil Defence of Jalisco and the University of Guadalajara. 400 events have been located, in these earthquakes we identified some series of a similar waveforms. For defining this similarity between seismic events and in order to classify them into clusters, we have applied the cross-correlation method of the P and S arrivals. We found a fourth part of epicentres gathered into 15 clusters of 3-25 events. For some clusters we used relocations relative to a master event. Located south of Bahia de Banderas exist clusters aligned along structures trending N-S in the area of Tuito. This trend agrees with the topographic relief of the area. Other clustes can be related with active tectonic structures at north of Cajon de Peñas dam (Tomatlan). Another cluster was identified at the East, Amatlan de Cañas-Ameca area, and one more in the center of the Bahia de Banderas.

  13. Diversidade genética de Xylella fastidiosa em regiões produtoras de citros na Bahia

    Directory of Open Access Journals (Sweden)

    Vinicius Oliveira Casais

    2014-01-01

    Full Text Available O objetivo deste trabalho foi avaliar, por meio de marcadores SSR, a diversidade genética de Xylella fastidiosa no Estado da Bahia. Foram estudadas duas das principais regiões produtoras de citros no Estado, o Litoral Norte e o Recôncavo Sul. Para fins comparativos, utilizaram-se dez amostras provenientes do Estado de São Paulo. Foram empregados os seguintes iniciadores: ASSR20, OSSR9, OSSR17, CSSR4, CSSR12 e CSSR20, dos quais os quatro últimos permitiram identificar 22 loci polimórficos. As populações de X. fastidiosa presentes em citros no Estado da Bahia apresentam elevada diversidade genética, com base nos marcadores SSR, com pools gênicos distintos e agrupamento geográfico. No Litoral Norte, as populações do isolado apresentam maior diversidade genética do que as da região do Recôncavo Sul da Bahia.

  14. Comparative analysis of the proposals from Rio de Janeiro and Bahia for the sporting regulation of capoeira (1968

    Directory of Open Access Journals (Sweden)

    Ana Rosa Jaqueira

    2012-10-01

    Full Text Available Background and aim: Despite having been institutionalised in the Brazilian Confederation of Pugilism (1941 as a sport, at that time there were not any regulations for Capoeira competitions. Two symposia (1968 and 1969 were held in Rio de Janeiro (Guanabara aiming to establish a set of regulations for the discipline and, as a consequence, to provide equal conditions for the competing athletes. In order to do so, representatives from Bahia and Rio de Janeiro were invited to discuss the matter. The present study analyses the first three proposals for the regulation of Capoeira, which came from the states of Bahia and Rio de Janeiro and were presented at the symposium held in 1968.Method: The ethnographic and historical methods were used along with content analysis, praxeological analysis and semi-structured interviews for the survey, processing and interpretation of data, and subsequent comparison of the proposals.Results: We observed that the proposal from Bahia was characterised by gymnastic, recreational and ritual elements, whereas those from Rio de Janeiro were characterised by the agonistic aspect of the discipline. Differences regarding personal and stylistic views and territorial interests proved to be a major hindrance and no regulations were established. Therefore, we conclude that the ideal conditions for the sporting regulation of Capoeira could not be met at that time.

  15. Effects of Bahia Grass Cover and Mulch on Runoff and Sediment Yield of Sloping Red Soil in Southern China

    Institute of Scientific and Technical Information of China (English)

    LI Xin-Hu; ZHANG Zhan-Yu; YANG Jie; ZHANG Guo-Hua; WANG Bin

    2011-01-01

    Rainfall, runoff (surface runoff, interflow and groundwater runoff) and soil loss from 5 m × 15 m plots were recorded for 5 years (2001-2005) in an experiment with three treatments (cover, mulch and bare ground) on sloping red soil in southern China. Surface runoff and erosion from the Bahia grass (Paspalum notatum Flugge) cover plot (A) and mulch plot (B) during the 5 years were low,despite the occurrence of potentially erosive rains. In contrast, the bare plot (C) had both the highest surface runoff coefficient and the highest sediment yield. There were significant differences in interflow and surface runoff and no significant difference in groundwater runoff among plots. The runoff coefficients and duration of interflow and groundwater runoff were in the order plot B > plot A > plot C. Effects of Bahia grass cover were excellent, indicating that the use of Bahia grass cover can be a simple and feasible practice for soil and water conservation on sloping red soil in the region.

  16. Identificación del agente causal de la pudrición blanca en Morelos, México

    Directory of Open Access Journals (Sweden)

    Ernesto Hernández Mendieta

    2013-12-01

    Full Text Available Título en ingles: Identification of the white rot agent in Morelos, MexicoTítulo corto: Agente causal de la pudrición blanca en Morelos, MéxicoResumen: Cepas aisladas de Trametes versicolor (L.:Fr. Pilát causando pudrición blanca en especies arbóreas de amate amarillo (Ficus petiolaris, cirián o cuatecomate (Crescentia alata, guayaba (Psidium guajava y sauce colorado (Salix humboltiana en los municipios de Ayala, Cuautla, Cuernavaca, Jojutla, Tepalcingo, Tlaltizapán, Tlaquiltenango y Zacatepec de Hidalgo en el estado de Morelos, México se desarrollaron en medio de cultivo agua-agar enriquecido con 2,4-D amina en concentraciones de 0, 50, 100, 150, 250, 500, 1000, 2000, 3000, 4000 y 5000 ppm, con el objetivo de conocer su desarrollo en esta sal. Los mejores resultados se obtuvieron en un intervalo de 50 a 1000 ppm con un óptimo de 500 a 1000 ppm.L, las concentraciones de 2000 a 5000 ppm inhiben el desarrollo del hongo. Se confirma que las cepas aisladas de T. versicolor pueden emplearse como herramienta potencial de biorremediación de aguas contaminadas por ácido 2,4-D que es empleado como herbicida para el control de malezas de hoja ancha en cultivos de maíz, arroz, caña de azúcar y sorgo en la región de estudio.Palabras clave: Trametes versicolor, identificación, ácido 2,4-diclorofenoxiacetico, 2,4-D.Abstract: Trametes versicolor (L.: Fr Pilát was identified causing white rot of hardwood tree species of amate amarillo (Ficus petiolaris, cuatecomate or cirián (Crescentia alata, guayava (Psidium guajava and sauce colorado (Salix humboltiana in municipalities of Ayala, Cuautla, Cuernavaca, Jojutla Tepalcingo Tlaltizapan, Tlaquiltenango and Zacatepec de Hidalgo in the state of Morelos, Mexico. Collected strains were grown in water-agar culture medium with 2,4-D amine at concentrations of 0, 50, 100, 150, 250, 500, 1000, 2000, 3000, 4000 and 5000 ppm with the aim of know their growth in this salt. The best results were found

  17. Stab Wound to the Face. A Case Presentation Herida facial por arma blanca. Presentación de un caso

    Directory of Open Access Journals (Sweden)

    Yordany Boza Mejias

    2012-05-01

    Full Text Available

    The case of a young male patient aged 34, brown skinned, of rural origin and with a history of good health is presented. The patient was admitted at the Emergency Room of the Dr. Gustavo Aldereguía Lima General University Hospital in Cienfuegos. As a result of a fight, he had received a stab wound to the left lower side of the face. Therefore, surgical emergency treatment was applied. The objective of this presentation is to emphasize the importance of a multifactorial attention that allows covering all vital parameters and controlling the patient's hemodynamic status as well as that of the laboratory study, as appropriate, in order to obtain a rapid and effective behavior.

    Se presenta el caso de un joven de 34 años de edad, sexo masculino, de color de piel mestiza, de procedencia rural, con antecedentes de salud, que se recibió en el área de código rojo del Cuerpo de Guardia del Hospital General Universitario Dr. Gustavo Aldereguía Lima, de Cienfuegos, con una herida por arma blanca en la región inferior izquierda de la cara, producto de una riña, por lo que se le aplicó tratamiento quirúrgico de urgencia. El objetivo de esta presentación es enfatizar en la importancia de una atención multifactorial, que permita atender los parámetros vitales y controlar el estado hemodinámico del paciente, así como de la realización del estudio de laboratorio que corresponda, para desarrollar una conducta rápida y eficaz.

  18. Randon emanometry in the uraniferous district of Sierra Pena Blanca and in other volcanic areas of Chihuahua, Mexico

    International Nuclear Information System (INIS)

    There are difficulties associated with the repeatability of radon measurements using portable emanometers owing to the effects of meteorological phenomena on soil gases. The paper describes a correction method based on fluctuation curves. Orientation surveys were carried out on different days at the Las Margaritas and Nopal I deposits of the Sierra Pena Blanca and the radon concentrations measured at the same stations were found to be very different. In the surveys, fluctuation curves at stations were determined, and the readings from the surveys were subsequently corrected. The surveys performed on the first day showed no conspicuous anomalies directly above the deposits, but after correction of the measurements the anomalies increased to a factor of 3-4 above the normal concentration. The second surveys showed considerable anomalies above the deposits and also increased after correction of the measurements. The fluctuation curves obtained at the Sierra de la Gloria and other prospects of the north central part of Chihuahua showed highs in the mornings and evenings. The most common variations in the fluctuation curves are between 100% and 200%, although they can be higher. The corrections to the measured concentrations were calculated by means of straight-line graphs and also by the CORRAD program, which calculates a curve by the least squares method. Systematic surveys without any correction show strong line effects which render their use impractical. Corrections calculated with straight-line graphs reduce the line effect, while surveys corrected with the CORRAD program show a better distribution of anomalies, making them more useful. (author)

  19. Uranium deposits of the Sierra Pena Blanca: Three examples of mechanisms of ore deposit formation in a volcanic environment

    International Nuclear Information System (INIS)

    The Nopal and Escuadra Formations (welded vitroclastic tuffs) contain the uranium deposits of Sierra Pena Blanca (Chihuahua, Mexico). These Tertiary formations (between 44 and 38 million years) overlie Cretaceous limestones. With mineralogical, petrographical, geochemical and fluid inclusion studies of the non-altered rocks of the uraniferous mineralization and the associated alteration three genetic types of ore deposits have been identified. Hydrothermal ore deposits (Nopal I). These ore deposits are linked to faults or a breccia pipe. They are mainly located in the Nopal Formation. Their history is complex and begins soon after the deposition of tuff. They are considered hydrothermal, even if some supergene alteration occurs during late stages. Oxidized mineralization (uranophane) succeeds reduced ore (uranium oxides-ilmenite and pitchblende-pyrite associations). The associated kaolinite has a high temperature habitus. The montmorillonite-zeolite association is local and occurs after kaolinization. Supergene ore deposit (Puerto III). Puerto III is a stratiform-shaped deposit. The only oxidized mineralization lies in the upper part of the Nopal Formation and is located under a silicified bed interpreted as a palaeosoil. Mixed ore deposit (Las Margaritas). This uranium-molybdenum deposit is located in the Escuadra Formation. The alteration products are kaolinite with a middle temperature habitus and alunite. The intensity of this alteration is lower than in the first hydrothermal type, but the volume of altered rock is greater. Uranium mineralizations (silicates, phosphates, vanadates) are associated with molybdenum minerals (sulphides and molybdates). This deposit is considered to be the result of an interaction, in a tectonic valley, between hydrothermal volcanic fluids and underground waters. (author)

  20. Petrographic and geochemical characteristics of the ignimbritic units containing uranium mineralization of the Sierra Pena Blanca, Mexico

    International Nuclear Information System (INIS)

    The Sierra Pena Blanca, which is characterized by Miocene-Plioquaternary Basin and Range tectonics, is a mountain range 70 km long oriented NNW-SSE and located 50 km to the north of the city of Chihuahua. This range is divided into two parts: a southern one with outcrops of old Palaeozoic and Mesozoic series and a northern one in which the Eocene ignimbritic sequence lies in unconformity over the folded Mesozoic series. The Eocene volcanic sequence consists of five cooling units locally separated by levels of calcareous breccias, conglomerates or arenites; the first two units were deposited at 43.5+-1 MA and the other three at 37.8+-0.5 MA. The uranium mineralization is found in the oldest ignimbritic units with the exception of the El Nopal I deposit which is of the breccia pipe type and is situated in the second cooling unit (Nopal ''rhyolite'' - Escuadra ''rhyolite''); the El Nopal deposit is either on the border between the lava flows (El Nopal III) or is well disseminated (El Puerto III and Las Margaritas). The Nopal and Escuadra ''rhyolites'', which are rich in silicon (75+-0.5%) and in alkalines (>8%) are noted for their K2O contents of above 6%; this is a primary characteristic confirmed by the composition of the vitreous inclusions of quartz phenocrysts (Na2O+K2O>10%-K2O=6.3+-0.1%) predating post-depositional processes which, on the other hand, have influenced the percentage of Na2O, causing the chemical compositions to move in the direction of hyperaluminosity. Developed rhyolites are enriched in Th (35 ppm) and U (10 ppm); this continuous background is sufficient to permit in situ remobilization as a result of the circulation of fluids linked with the escape of gases

  1. Investigating potential precipitation changes with impacts on small-scale farming in mountain villages, Cordillera Blanca, Peru

    Science.gov (United States)

    Gurgiser, Wolfgang; Hofer, Marlis; Juen, Irmgard; Schauwecker, Simone; Singer, Katrin; Neuburger, Martina; Kaser, Georg

    2015-04-01

    Small subsistence farmers on the slopes above the city of Huaraz in the Peruvian Cordillera Blanca assign recent challenges in agricultural production - beyond other factors - to decreasing precipitation during the early crop cultivation period in August and September. In general, local climate is characterized by low annual variation in air temperature but a strong seasonality in precipitation. While driest conditions prevail in June and July, precipitation increases gradually towards the October to April wet season with strong topographically induced gradients. Because seeding occurs soon after the core dry months, cultivation is highly vulnerable to potential alterations in the transition period from dry to wet conditions. Within this study we try to find "data-based" evidence for changes in precipitation patterns, even though the availability of meteorological information for proving precipitation trends is generally poor for this region. We currently investigate the respective potential of connecting approx. 10 years (2003-2013) of ground measurements (weekly resolution with some gaps) with ERA-interim total precipitation output (0.75 deg. resolution) by (1) selecting those adjacent model grid points that explain measured precipitation variability best and by (2) fitting the data from the selected grid points to the measurements with quantile mapping. Uncertainties arising from the transfer functions are assessed with a cross validation approach. Our preliminary results suggest that (1) ground measurements are fairly explained by ERA interim data (despite the very complex topography), that (2) no significant trends in precipitation at the end of the dry season (August, September) are detectable for the period 1979-2013, but relatively high year-to-year variability occurs and that (3) process based limited area modeling might be required to effectively assess specific requests of user groups related to local precipitation variability.

  2. Densidad poblacional del venado cola blanca (Odocoileus virginianus en sabana inindable de Paz De Ariporo (Casanare, Orinoquia colombiana

    Directory of Open Access Journals (Sweden)

    Montenegro Olga Lucía

    2006-12-01

    Full Text Available Esta investigación buscó estimar y analizar las diferencias en la densidad poblacional del venado cola blanca
    (Odocoileus virginianus en dos hatos de la Orinoquia colombiana, con miras a aportar elementos para su manejo
    sostenible en la región. Para la estimación de densidad se realizaron conteos de individuos y grupos en transectos
    lineales de ancho variable acumulando 54,3 km y 48,65 km en los hatos Taparas y Miramar respectivamente.
    Estos recorridos se realizaron entre junio y julio de 2005, que corresponde a la época de lluvias. La densidad tanto
    de individuos como de grupos de venados fue mayor en el hato Taparas (0,44 venados/ha y 0,148 grupos/ha
    respectivamente que en el hato Miramar (0,11 venados/ha y 0,086 grupos/ha respectivamente. El número de hembras observadas fue mayor que el número de machos tanto en el hato Taparas (c2=165,8, p <0,05 como en el hato Miramar (c2=18, p <0,05. En los dos hatos la distribución de edades se caracterizó por una mayor proporción de adultos seguido por juveniles y crías. En el hato Taparas el tamaño promedio de grupo fue de 3,01, mientras en el hato Miramar éste fue de 1,55 individuos. Se discuten las diferencias en densidad en los dos hatos a la luz de presiones de cacería, variaciones en el hábitat e interacciones con el ganado vacuno de la zona.

  3. A zooterapia popular no Estado da Bahia: registro de novas espécies animais utilizadas como recursos medicinais The popular zootherapy in Bahia state: registration of new animal species used as medicinal resources

    Directory of Open Access Journals (Sweden)

    Eraldo Medeiros Costa Neto

    2011-01-01

    Full Text Available Este artigo discute o uso de animais como recursos medicinais no Estado da Bahia, nordeste brasileiro. Os dados resultam de uma avaliação processual de desempenho acadêmico, uma vez que se tratou de um exercício requerido pelo professor da disciplina Etnobiologia (semestre 2007.2 aos estudantes do curso de Formação de Professores do Estado da Bahia da Universidade Estadual de Feira de Santana, quando lhes foi solicitado que fizessem um breve registro, em suas respectivas cidades, sobre o uso de animais medicinais. Participaram 41 estudantes, provenientes de 21 cidades do interior do estado. Foram registrados 95 animais (nomes comuns, dos quais dezessete são novos acréscimos à lista de animais medicinais anteriormente publicada. O registro da utilização medicinal de animais no Estado da Bahia fornece uma contribuição relevante ao fenômeno da zooterapia, abrindo espaço para debates sobre biologia da conservação, políticas de saúde pública, manejo sustentável dos recursos naturais, prospecção biológica e patente. Necessita-se desenvolver mais estudos etnozoológicos tanto para compreender a importância real da zooterapia para as comunidades tradicionais, quanto para desenvolver estratégias de manejo e uso sustentáveis das espécies animais, especialmente daquelas em risco de extinção.This article deals with the use of animals as medicinal resources in Bahia state, Northeastern Brazil. The data come from a processional evaluation of academic performance, since it was an exercise requested by the professor of the discipline Ethnobiology (2007.2 semester to the students of the course Bahia State Teachers' Undergraduation of Feira de Santana State University. They were asked to make a brief survey, in their respective cities, on the use of animals as medicines. Forty-one students, from 21 cities of the country of Bahia State, have participated with data. A total of 95 animals (common names were recorded, from which 17 are

  4. Columbia River Estuary Ecosystem Classification Ecosystem Complex

    Science.gov (United States)

    Cannon, Charles M.; Ramirez, Mary F.; Heatwole, Danelle W.; Burke, Jennifer L.; Simenstad, Charles A.; O'Connor, Jim E.; Marcoe, Keith Marcoe

    2012-01-01

    Estuarine ecosystems are controlled by a variety of processes that operate at multiple spatial and temporal scales. Understanding the hierarchical nature of these processes will aid in prioritization of restoration efforts. This hierarchical Columbia River Estuary Ecosystem Classification (henceforth "Classification") of the Columbia River estuary is a spatial database of the tidally-influenced reaches of the lower Columbia River, the tidally affected parts of its tributaries, and the landforms that make up their floodplains for the 230 kilometers between the Pacific Ocean and Bonneville Dam. This work is a collaborative effort between University of Washington School of Aquatic and Fishery Sciences (henceforth "UW"), U.S. Geological Survey (henceforth "USGS"), and the Lower Columbia Estuary Partnership (henceforth "EP"). Consideration of geomorphologic processes will improve the understanding of controlling physical factors that drive ecosystem evolution along the tidal Columbia River. The Classification is organized around six hierarchical levels, progressing from the coarsest, regional scale to the finest, localized scale: (1) Ecosystem Province; (2) Ecoregion; (3) Hydrogeomorphic Reach; (4) Ecosystem Complex; (5) Geomorphic Catena; and (6) Primary Cover Class. For Levels 4 and 5, we mapped landforms within the Holocene floodplain primarily by visual interpretation of Light Detection and Ranging (LiDAR) topography supplemented with aerial photographs, Natural Resources Conservation Service (NRCS) soils data, and historical maps. Mapped landforms are classified as to their current geomorphic function, the inferred process regime that formed them, and anthropogenic modification. Channels were classified primarily by a set of depth-based rules and geometric relationships. Classification Level 5 floodplain landforms ("geomorphic catenae") were further classified based on multivariate analysis of land-cover within the mapped landform area and attributed as "sub

  5. Columbia River Estuary Ecosystem Classification Geomorphic Catena

    Science.gov (United States)

    Cannon, Charles M.; Ramirez, Mary F.; Heatwole, Danelle W.; Burke, Jennifer L.; Simenstad, Charles A.; O'Connor, Jim E.; Marcoe, Keith

    2012-01-01

    Estuarine ecosystems are controlled by a variety of processes that operate at multiple spatial and temporal scales. Understanding the hierarchical nature of these processes will aid in prioritization of restoration efforts. This hierarchical Columbia River Estuary Ecosystem Classification (henceforth "Classification") of the Columbia River estuary is a spatial database of the tidally-influenced reaches of the lower Columbia River, the tidally affected parts of its tributaries, and the landforms that make up their floodplains for the 230 kilometers between the Pacific Ocean and Bonneville Dam. This work is a collaborative effort between University of Washington School of Aquatic and Fishery Sciences (henceforth "UW"), U.S. Geological Survey (henceforth "USGS"), and the Lower Columbia Estuary Partnership (henceforth "EP"). Consideration of geomorphologic processes will improve the understanding of controlling physical factors that drive ecosystem evolution along the tidal Columbia River. The Classification is organized around six hierarchical levels, progressing from the coarsest, regional scale to the finest, localized scale: (1) Ecosystem Province; (2) Ecoregion; (3) Hydrogeomorphic Reach; (4) Ecosystem Complex; (5) Geomorphic Catena; and (6) Primary Cover Class. For Levels 4 and 5, we mapped landforms within the Holocene floodplain primarily by visual interpretation of Light Detection and Ranging (LiDAR) topography supplemented with aerial photographs, Natural Resources Conservation Service (NRCS) soils data, and historical maps. Mapped landforms are classified as to their current geomorphic function, the inferred process regime that formed them, and anthropogenic modification. Channels were classified primarily by a set of depth-based rules and geometric relationships. Classification Level 5 floodplain landforms ("geomorphic catenae") were further classified based on multivariate analysis of land-cover within the mapped landform area and attributed as "sub

  6. Columbia River Estuary Ecosystem Classification Hydrogeomorphic Reach

    Science.gov (United States)

    Cannon, Charles M.; Ramirez, Mary F.; Heatwole, Danelle W.; Burke, Jennifer L.; Simenstad, Charles A.; O'Connor, Jim E.; Marcoe, Keith

    2012-01-01

    Estuarine ecosystems are controlled by a variety of processes that operate at multiple spatial and temporal scales. Understanding the hierarchical nature of these processes will aid in prioritization of restoration efforts. This hierarchical Columbia River Estuary Ecosystem Classification (henceforth "Classification") of the Columbia River estuary is a spatial database of the tidally-influenced reaches of the lower Columbia River, the tidally affected parts of its tributaries, and the landforms that make up their floodplains for the 230 kilometers between the Pacific Ocean and Bonneville Dam. This work is a collaborative effort between University of Washington School of Aquatic and Fishery Sciences (henceforth "UW"), U.S. Geological Survey (henceforth "USGS"), and the Lower Columbia Estuary Partnership (henceforth "EP"). Consideration of geomorphologic processes will improve the understanding of controlling physical factors that drive ecosystem evolution along the tidal Columbia River. The Classification is organized around six hierarchical levels, progressing from the coarsest, regional scale to the finest, localized scale: (1) Ecosystem Province; (2) Ecoregion; (3) Hydrogeomorphic Reach; (4) Ecosystem Complex; (5) Geomorphic Catena; and (6) Primary Cover Class. For Levels 4 and 5, we mapped landforms within the Holocene floodplain primarily by visual interpretation of Light Detection and Ranging (LiDAR) topography supplemented with aerial photographs, Natural Resources Conservation Service (NRCS) soils data, and historical maps. Mapped landforms are classified as to their current geomorphic function, the inferred process regime that formed them, and anthropogenic modification. Channels were classified primarily by a set of depth-based rules and geometric relationships. Classification Level 5 floodplain landforms ("geomorphic catenae") were further classified based on multivariate analysis of land-cover within the mapped landform area and attributed as "sub

  7. THE CHARACTERISTIC OF MARINE ENVIRONMENT IN LINGDINGYANG ESTUARY

    Institute of Scientific and Technical Information of China (English)

    CHEN; Bing-lu

    2001-01-01

    [1]LIN Zhi-qing, 1985. The Nutrient salts in the water between Guangzhou and Humen [J] . Tropical Oceanography, 4(2):52-59. (in Chinese)[2]LUO Zhang-ren, YING Zhi-pu et al., 1992. The Harbours in South China[M]. Guangzhou: Zhongshan University Press,101-126. (in Chinese)[3]PENG Yun-hui et al., 1991. The relationship of phosphate and dissolved oxygen in Pearl River Estuary [J]. Marine Report,10(6): 25-29. (in Chinese)[4]PENG Yun-hui et al., 1994. The relationship of dissolved oxygen and nutrient salts in Pearl River Estuary[J]. Tropical Oceanography, 13(1): 96-100. (in Chinese)[5]TAN Wei-guang et al., 1993. Assessment of eutrophication of Pearl River Estuary [J] . Research & Exploration of Nanhai, (2): 17-21. (in Chinese)[6]TANG Yong-Luan, 1984. The Characteristic of the dispersion model of the substances of Pearl River Estuary and Lingding Estuary [J] . Marine Environmental Science, 3(3): 1-11.(in Chinese)[7]ZHOU Yan-xia, 1994. Analysis of the water quality of Pearl River Estuary and neighboring sea area [J]. Marine Report, 13(3):24-30. (in Chinese)[8]ZHAO Huan-ting, 1981. The topograghy of Lingding Estuary [J]. Journal of Oceanography, 3(2): 20-27. (in Chinese)

  8. Urban microbial ecology of a freshwater estuary of Lake Michigan

    Directory of Open Access Journals (Sweden)

    Jenny C. Fisher

    2015-07-01

    Full Text Available Abstract Freshwater estuaries throughout the Great Lakes region receive stormwater runoff and riverine inputs from heavily urbanized population centers. While human and animal feces contained in this runoff are often the focus of source tracking investigations, non-fecal bacterial loads from soil, aerosols, urban infrastructure, and other sources are also transported to estuaries and lakes. We quantified and characterized this non-fecal urban microbial component using bacterial 16S rRNA gene sequences from sewage, stormwater, rivers, harbor/estuary, and the lake surrounding Milwaukee, WI, USA. Bacterial communities from each of these environments had a distinctive composition, but some community members were shared among environments. We used a statistical biomarker discovery tool to identify the components of the microbial community that were most strongly associated with stormwater and sewage to describe an “urban microbial signature,” and measured the presence and relative abundance of these organisms in the rivers, estuary, and lake. This urban signature increased in magnitude in the estuary and harbor with increasing rainfall levels, and was more apparent in lake samples with closest proximity to the Milwaukee estuary. The dominant bacterial taxa in the urban signature were Acinetobacter, Aeromonas, and Pseudomonas, which are organisms associated with pipe infrastructure and soil and not typically found in pelagic freshwater environments. These taxa were highly abundant in stormwater and sewage, but sewage also contained a high abundance of Arcobacter and Trichococcus that appeared in lower abundance in stormwater outfalls and in trace amounts in aquatic environments. Urban signature organisms comprised 1.7% of estuary and harbor communities under baseflow conditions, 3.5% after rain, and >10% after a combined sewer overflow. With predicted increases in urbanization across the Great Lakes, further alteration of freshwater communities is

  9. Biogeography of dinoflagellate cysts in northwest Atlantic estuaries.

    Science.gov (United States)

    Price, Andrea M; Pospelova, Vera; Coffin, Michael R S; Latimer, James S; Chmura, Gail L

    2016-08-01

    Few biogeographic studies of dinoflagellate cysts include the near-shore estuarine environment. We determine the effect of estuary type, biogeography, and water quality on the spatial distribution of organic-walled dinoflagellate cysts from the Northeast USA (Maine to Delaware) and Canada (Prince Edward Island). A total of 69 surface sediment samples were collected from 27 estuaries, from sites with surface salinities >20. Dinoflagellate cysts were examined microscopically and compared to environmental parameters using multivariate ordination techniques. The spatial distribution of cyst taxa reflects biogeographic provinces established by other marine organisms, with Cape Cod separating the northern Acadian Province from the southern Virginian Province. Species such as Lingulodinium machaerophorum and Polysphaeridinium zoharyi were found almost exclusively in the Virginian Province, while others such as Dubridinium spp. and Islandinium? cezare were more abundant in the Acadian Province. Tidal range, sea surface temperature (SST), and sea surface salinity (SSS) are statistically significant parameters influencing cyst assemblages. Samples from the same type of estuary cluster together in canonical correspondence analysis when the estuaries are within the same biogeographic province. The large geographic extent of this study, encompassing four main estuary types (riverine, lagoon, coastal embayment, and fjord), allowed us to determine that the type of estuary has an important influence on cyst assemblages. Due to greater seasonal variations in SSTs and SSSs in estuaries compared to the open ocean, cyst assemblages show distinct latitudinal trends. The estuarine context is important for understanding present-day species distribution, the factors controlling them, and to better predict how they may change in the future. PMID:27547344

  10. Planktonic and whole system metabolism in a nutrient rich estuary (the Scheldt estuary)

    OpenAIRE

    Gazeau, Frédéric; Gattuso, Jean-Pierre; Middelburg, Jack J; Brion, Natacha; Schiettecatte, Laure-Sophie; Frankignoulle, Michel; Borges, Alberto

    2005-01-01

    Planktonic gross primary production (GPP), community respiration (CR), and nitrification (NIT) were measured monthly in the Scheldt estuary by the oxygen incubation method in 2003. No significant evolution of planktonic GPP was observed since the 1990s with high rates in the freshwater area (salinity 0; 97 6 65 mmol C m-2 d-1) decreasing seaward (22-37 mmol C m-2 d-1). A significant decrease of NIT was observed with regard to previous investigations although this process still represents up t...

  11. Seasonal patterns in the fish and crustacean community of a turbid temperate estuary (Zeeschelde Estuary, Belgium)

    OpenAIRE

    J. Maes; Taillieu, A.; Damme, P.A. van; Cottenie, K.; Ollevier, F.P.

    1998-01-01

    Fish and crustaceans were sampled for 1 year in the upper reaches of a temperate estuary characterized by high turbidity and a tidal range of up to 5 m. Samples were taken in the cooling-water circuit of the Doel Nuclear Power station (Zeeschelde, Belgium). Between July 1994 and June 1995, 55 fish species, two shrimp species and four crab species were recorded. The fish community was composed of 36 marine species, 16 freshwater species and three diadromous species. Shrimps, Gobiidae and Clupe...

  12. A preliminary evaluation of shallow-water rhodolith beds in Bahia Magdalena, Mexico

    Directory of Open Access Journals (Sweden)

    Enrique Ávila

    2011-12-01

    Full Text Available The aim of the present study was to describe the structure of shallow-water rhodolith beds from Bahia Magdalena, one of the most productive estuarine systems of the Mexican Pacific coasts. From September 2008 to May 2009 four rhodolith beds were found (between 1 and 3 m depth and population descriptors such as rhodolith density, size classes, branch density, volume and weight were determined. The dominant rhodolith forming species was Lithophyllum margaritae. The size of beds ranged from 7,600 to 17,800 m2 approximately with densities from 42.2 to 215.9 ind.m-2. In these beds, L. margaritae shows fruticose and foliose growth forms, from which spherical forms were predominant (81-99%. Branch density (from 3.0 to 13.3 branches.cm-2 varied significantly (p O objetivo do presente estudo foi descrever a estrutura de bancos de rodolitos de áreas rasas da Bahia Magdalena, um dos sistemas estuarinos mais produtivos da costa pacífica mexicana. Quatro bancos de rodolitos situados entre 1 e 3m de profundidade foram avaliados em relação a densidade, classes de tamanho, densidade dos ramos, volume e peso no período de setembro de 2008 a maio de 2009. A espécie dominante no local foi Lithophyllum margaritae. O tamanho dos bancos variou de 7,600 a 17,800 m² aproximadamente, com densidades de 42.2-215.9 ind.m-2 . Foram observadas formas de crescimento fruticosa e folhosa em L. margaritae, sendo a forma esférica predominante (81-99%. A densidade dos ramos (3.0-13.3 ramos.cm-2 variou significativamente (p < 0.05 entre os bancos. O volume médio (2.0-400 ml e o peso úmido (32.4-84.8 g não tiveram diferenças significativas entre os locais, mas uma correlação positiva significativa (r = 0.95, p < 0.05 foi encontrada entre os parâmetros. O tamanho das plantas variou de 2.0 a 11.5 centímetros predominando o padrão entre 40.1-60 mm. As diferenças na densidade de rodolitos, densidade dos ramos e a esfericidade foram atribuídas às condições hidrodin

  13. Maturation of the penaeid prawn Metapenaeus moyebi in Mandovi Estuary, Goa

    Digital Repository Service at National Institute of Oceanography (India)

    Nair, S.R.S.; Achuthankutty, C.T.; Parulekar, A

    Metapenaeus moyebi contributed a good share of penaeid prawn population in the Mandovi Estuary of Goa, India throughout the year. Both males and females of this species with fully mature gonads were observed in the estuary, suggesting further...

  14. Suspended sediment fluxes in a tropical estuary, west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    AnilKumar, N.; DineshKumar, P.K.; Srinivas, K.

    Annual transport processes of suspended sediments in Beypore estuary - a tropical estuary along the south west coast of India - were investigated based on time series measurements within the system. It's observed that the sediment transport...

  15. Picophytoplankton community in a tropical estuary: Detection of Prochlorococcus-like populations

    Digital Repository Service at National Institute of Oceanography (India)

    Mitbavkar, S.; Rajaneesh, K.M.; Anil, A.C.; Sundar, D.

    The influence of hydrography on the picophytoplankton (PP) abundance in estuaries was studied by sampling along a salinity gradient in an Indian estuary. Prochlorococcus-like cells were detected at salinities ranging from 0.06 to 35, which otherwise...

  16. Circulation and mixing process in Vasishta-Godavari estuary, east coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Kumar, A.R.S.; Murty, T.V.R.; Rao, M.M.M.; Rao, V.R.; Reddy, B.S.R.

    Circulation and Mixing Process in Vasishta-Godavari Estuary, have been studied by using estuarine classification model. Analysis of salinity, salt budget, diffusion coefficients and flushing times based on salinity data of Vasishta-Godavari estuary...

  17. High CO2 emissions from the tropical Godavari estuary (India) associated with monsoon river discharges

    Digital Repository Service at National Institute of Oceanography (India)

    Sarma, V.V.S.S.; Kumar, N.A.; Prasad, V.R.; Venkataramana, V.; Appalanaidu, S.; Sridevi, B.; Kumar, B.S.K.; Bharati, M.D.; Subbaiah, C.V.; Acharyya, T.; Rao, G.D.; Viswanadham, R.; Gawade, L.; Manjary, D.T.; Kumar, P.P.; Rajeev, K.; Reddy, N.P.C.; Sarma, V.V.; Kumar, M.D.; Sadhuram, Y.; Murty, T.V.R.

    Estuaries have been under sampled to establish them as sources or sinks of the atmospheric carbon dioxide. Such poor coverage is well known for tropical, particularly monsoon driven, estuaries. In an attempt to study the variability in CO sub(2...

  18. Contrasting behaviour of trace metals in the Scheldt estuary in 1978 compared to recent years

    OpenAIRE

    Nolting, R.F.; Helder, W.; De Baar, H. J. W.; Gerringa, L.J.A.

    1999-01-01

    Dissolved and particulate trace metals (Cu, Cd, Pb, Zn, Ni, Fe and Mn) measured at six stations along the Scheldt estuary in October/November 1978 are compared with more recent data. Based on Ca content in the suspended matter, three distinct geochemical regions could be distinguished: the upper estuary (salinity 1–7) dominated by fluvial mud, mid-estuary (salinity 7–17) where the composition of the suspended matter remained relatively constant, and the lower estuary where marine mud prevaile...

  19. Effect of Freshwater Influx on Phytoplankton in the Mandovi Estuary (Goa, India) during Monsoon Season: Chemotaxonomy

    OpenAIRE

    Goes, Joaquim I.; Prabhu Matondkar, S. G.; Sushma G. Parab; Helga do R. Gomes

    2013-01-01

    The Mandovi estuary is a prominent water body that runs along the west coast ofIndia. It forms an estuarine network with the adjacent Zuari estuary, connected via the Cumbharjua canal. The physico-chemical conditions seen in the Mandovi estuary are influenced by two factors: the presence of several other groups of phytoplankton, the presence of which is yet to be reported in many other tropical estuaries. It includes chrysophytes, cyanobacteria, prasinophytes, prymnesiophytes and chlorophyte...

  20. Banco arenoso en un ambiente estuarial: rasgos de fondo y dinámica sedimentaria Sandbanks in a tidal environment: Bottom features and sedimentary dynamics

    Directory of Open Access Journals (Sweden)

    Laura G. Vecchi

    2008-09-01

    Full Text Available Los bancos de arena son rasgos comunes en la boca de los canales de marea del estuario de Bahía Blanca (sur de la provincia de Buenos Aires. Este estudio tiene por objetivo incrementar el conocimiento sobre los procesos y mecanismos de formación y mantenimiento de los bancos estuariales. La investigación se centró en un banco elongado, de 4 km de largo, ubicado en la boca del canal La Lista, denominado banco La Lista. A través de datos acústicos (ecosonda y sonar lateral se determinaron rasgos morfológicos de fondo. Estos, conjuntamente con muestras de sedimento y mediciones de corrientes, posibilitaron definir la hidrodinámica y el transporte sedimentario. La arena movilizada desde el interior del canal La Lista por la corriente de bajante constituye la principal fuente de sedimento del banco. Sobre el flanco norte del banco, el transporte neto de arena como carga de fondo se produce hacia el sureste debido a la corriente de reflujo. Aquí, el transporte de sedimento estimado fue de 0,02188 gr cm-1 seg-1. En oposición, en el flanco sur, la dominancia del flujo produce un transporte de 0,00451 gr cm-1 seg-1. Por lo tanto el mantenimiento del banco es el resultado de una asimetría de flujo/reflujo sobre sus flancos, generándose un transporte sedimentario residual en sentido horario. En consecuencia en los últimos años el banco ha experimentado cambios en la configuración de la cresta y crecido vertical y longitudinalmente.Tidal sandbanks are sedimentary features com monly found at the inlets of the tidal channels of Bahía Blanca Estuary (south Buenos Aires Province. To improve our understanding of the processes and mechanisms responsible for the formation and maintenance of the tidal sandbanks in estuaries, we carry out this study. We focus in a tidal sandbank located at La Lista channel mouth, denominated La Lista bank. It has an elongate shape with 4 km long. Bathymetric surveys, side-scan sonar records, grain

  1. Riverbed Micromorphology of the Yangtze River Estuary, China

    Directory of Open Access Journals (Sweden)

    Shuaihu Wu

    2016-05-01

    Full Text Available Dunes are present in nearly all fluvial channels and are vital in understanding sediment transport, deposition, and flow conditions during floods of rivers and estuaries. This information is pertinent for helping developing management practices to reduce risks in river transportation and engineering. Although a few recent studies have investigated the micromorphology of a portion of the Yangtze River estuary in China, our understanding of dune development in this large estuary is incomplete. It is also poorly understood how the development and characteristics of these dunes have been associated with human activities in the upper reach of the Yangtze River and two large-scale engineering projects in the estuarine zone. This study analyzed the feature in micromorphology of the entire Yangtze River estuary bed over the past three years and assessed the morphological response of the dunes to recent human activities. In 2012, 2014, and 2015, multi-beam bathymetric measurements were conducted on the channel surface of the Yangtze River estuary. The images were analyzed to characterize the subaqueous dunes and detect their changes over time. Bottom sediment samples were collected for grain size analysis to assess the physical properties of the dunes. We found that dunes in the Yangtze River estuary can be classified in four major classes: very large dunes, large dunes, medium dunes, and small dunes. Large dunes were predominant, amounting to 51.5%. There was a large area of dunes developed in the middle and upper reaches of the Yangtze River estuary and in the Hengsha Passage. A small area of dunes was observed for the first time in the turbidity maximum zone of the Yangtze River estuary. These dunes varied from 0.12 to 3.12 m in height with a wide range of wavelength from 2.83 to 127.89 m, yielding a range in height to wavelength of 0.003–0.136. Sharp leeside slope angles suggest that the steep slopes of asymmetrical dunes in the middle and upper

  2. ESTUDIO COMPARATIVO DE LOS COMPUESTOS VOLÁTILES DE TRES VARIEDADES DE GUAYABA BLANCA (Psidium guajava L. DURANTE SU MADURACIÓN

    Directory of Open Access Journals (Sweden)

    Johanna Cantillo

    2011-05-01

    Full Text Available Regional Blanca (RB y Ráquira (RQ. Seutilizó el método Headspace-Microextracciónen Fase Sólida (HS-MEFS paracomparar los perfiles olfativos de tres variedadesde guayaba blanca de la regiónde la hoya del río Suárez (Santander, Colombiadurante tres etapas de maduración(verde, pintón y maduro. En las tresvariedades se presentó un comportamientosimilar, los aldehídos C-6 (hexanal,(Z-3-hexenal y (E-2-hexenal responsablesde la nota verde disminuyen durantela maduración, mientras que el contenidode ésteres (acetato de hexilo y acetato de(Z-3-hexenilo aumenta produciéndoselas notas dulce y frutal características dela fruta madura. Los compuestos ácidos,furánicos y alcoholes se observan en bajasproporciones durante las tres etapas.El análisis de los compuestos volátilesmediante HS-MEFS permitió estableceruna relación entre la transformación decompuestos aldehídos C6, responsablesde la nota verde, en ésteres análogos, alos cuales se les atribuye la nota frutalcaracterística durante el proceso demaduración.

  3. Geology of the area of Bahía Blanca, Darwin's view and the presentknowledge: a story of 10 million years

    Directory of Open Access Journals (Sweden)

    Mirta E. Quattrocchio

    2009-04-01

    Full Text Available Theaim of this paper is to give an updated outlook of the scenery described byCharles Darwin when he visited Bahía Blanca and surrounding areas, following the itinerary during hisvoyage on board HMS Beagle. Such an outlook is a state of the art of thecurrent understanding of the Late Miocene-Holocene history in the southwestern Pampas (Argentina. Multidisciplinaryresults were integrated in a chronosequence chart synthesizing the suggestedspace-time correlation of the recognized events. Some of the studied localitiescovering the whole time interval represented in the area were arranged in thischart in a hypothetical E-W line crossing the Río Sauce Grande basin and thesurrounding highlands. This line is also approximately the one followed in partby Darwin when riding from Bahía Blanca to Tapalqué (Tapalguenas he crossed the region toward the Río Sauce. Paleoenviromental andpaleoclimatic inferences for the last 10m.y. are also given. Paleontologicalstudies included vertebrates, ostracods and palynomorphs. Many of the resultsof these investigations are the answers to Darwin's question when he first visitedthe area.

  4. Dinámica e implicancia del aluvión de la laguna 513, Cordillera Blanca, Ancash, Perú

    Directory of Open Access Journals (Sweden)

    Patricio Valderrama

    2012-09-01

    Full Text Available La Cordillera Blanca, al norte de Perú, es la zona con más actividad geodinámica externa en Perú. En ella ocurrieron grandes flujos de detritos de origen glaciar, varios de ellos fueron grandes desastres y cobraron miles de vidas. El 11 de abril del 2010, la laguna 513, ubicada en el centro de la Cordillera Blanca, sufrió un desembalse parcial por la caída de un gran bloque de hielo y rocas del nevado Hualcán (5500 m.s.n.m.. Este evento pese a ser de dimensiones considerables, no generó grandes pérdidas ni afectó alguna ciudad importante. Mediante simulaciones numéricas de flujo se estudió su dinámica, se determinó sus volúmenes y su turbulencia así como también explicamos e papel de la morfología de la zona en la desaceleración del flujo, su encausamiento en un valle fluvial y su posterior comportamiento como crecida de río. Las simulaciones realizadas mediante FLO2D se validan mediante comparaciones con imágenes de satélite post evento y datos de campo.

  5. Padrões de consumo de medicamentos em dois povoados da Bahia (Brasil Patterns of the consumption of pharmaceutical products in two towns in Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Hildebrando Haak

    1989-04-01

    Full Text Available Um estudo realizado junto a núcleos familiares em dois povoados baianos, (Brasil, revelou que os medicamentos modernos são amplamente utilizados no contexto da automedicação. O uso de medicamentos tradicionais foi de relevância limitada nesse quadro. A atitude da população em relação aos medicamentos modernos foi de ampla aceitação. Segundo as normas biomédicas, tal uso deveria ser considerado como irracional. Fatores agravantes nesse quadro foram: 1 a preferência pela aplicação de medicamentos a recém-nascidos; 2 o alto custo financeiro envolvido na compra de medicamentos; 3 o exagerado nível de expectativa em relação aos antibióticos, analgésicos e vitaminas. É recomendada a intensificação de pesquisa sobre o uso de medicamentos em nível local, no intuito de gerar soluções criativas para o problema do uso irracional de remédios. A automedicação poderia tornar-se importante parte da "Assistência Primária à Saúde" e a medicina preventiva poderia desempenhar papel-chave em tal pesquisa e nas subseqüentes campanhas de conscientização do público.A study among families in two villages in rural Bahia, Brazil, reveals that presently pharmaceutical products, are being used in self - medication on a large scale. Traditional remedies appear to have a limited place only. People's attitude towards modern medicines proved to be highy positive. However, when biomedicaly evaluated, the use of the pharmaceutical products has to be considered irrational. Complicating factors are: 1 a preference for the application of pharmaceutical products in infants, 2 the high financial burden to which the population is subject resulting from drug acquisition and 3 the exaggerated expectation with regard to antibiotics, analgesics and vitamin preparations. It is recommended did to do more research into local conditions of drugs use, resulting in creative solutions for irrational drug-use. Self medication could become an important

  6. The chemistry of trace elements in estuaries

    International Nuclear Information System (INIS)

    Estuarine mixing processes can be generally divided into two stages. In the low-salinity region (226Ra is removed through adsorption by resuspended particles, and added through desorption from riverine suspended particles and input from the pore water. This is shown by the data collected from the Mullica River estuary. Equilibrium-speciation calculation for estuarine water predict that Al and Cu are complexed largely with organic ligands. The extent of Ni complexes with organic ligands in estuarine water depends largely on the concentration of organic ligands. Dissolved Mn and Zn do not form significant fraction of metal-organic complexes. Complexing of Fe with organics can delay precipitation of Fe-hydroxides in the course of estuarine mixing. Metal concentrations in estuarine sediments of the Mullica River are primarily controlled by physical processes. The dominant processes are resuspension and sedimentation for suspended sediments, and longitudinal mixing for bottom sediments. In suspended particles, Fe, Mn, and Zn are largely associated with amorphous material, which is clearly in contrast to those for bottom sediments in which most metals are associated with clay minerals. The coastal waters of New Jersey receive considerable Cu, Ni Mn and Zn from anthropogenic sources, and these metals are largely added in the high salinity region

  7. Attenuation of rare earth elements in a boreal estuary

    Science.gov (United States)

    Åström, Mats E.; Österholm, Peter; Gustafsson, Jon Petter; Nystrand, Miriam; Peltola, Pasi; Nordmyr, Linda; Boman, Anton

    2012-11-01

    This study focuses on attenuation of rare earth elements (REE) when a boreal creek, acidified and loaded with REE and other metals as a result of wetland drainage, empties into a brackish-water estuary (salinity extract metals from the settling material. Aluminium, Fe and REE transported by the acidic creek were extensively removed in the inner/central estuary where the acidic water was neutralised, whereas Mn was relatively persistent in solution and thus redistributed to particles and deposited further down the estuary. The REE removal was caused by several contemporary mechanisms: co-precipitation with oxyhydroxides (mainly Al but also Fe), complexation with flocculating humic substances and sorption to suspended particles. Down estuary the dissolved REE pool, remaining after removal, was fractionated: the Humic Model after revision and updating, predicted that the dissolved (humic substances. Acid sulphate soils, the source of the REE and other metals in the creek water, are widespread on coastal plains worldwide and therefore the REE attenuation patterns and mechanisms identified in the studied estuary are relevant for recognition of similar geochemical processes and conditions in a variety of coastal locations.

  8. Assessment of trophic status in Changjiang (Yangtze) River estuary

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The integrated methodology for the assessment of estuarine trophic status (ASSETS),which was extended and refined from the United States National Estuarine Eutrophication Assessment (NEEA), is a multi-parameter assessment system and has been widely used in eutrophication assessment in estuarine and coastal waters. The ASSETS was applied to evaluate the trophic status of the Changjiang (Yangtze) River estuary, one of the largest estuaries in the world. The following main results were obtained: (i) The estuarine export potential is "moderate susceptibility" due to the "moderate" dilution potential and "moderate" flushing potential; (ii) The overall human influence (OHI) index classified the impact of nutrients in the system as "high" due to the high level of nutrient discharge by the river which channels anthropogenic impacts in the catchments to the estuarine system; (iii) The overall eutrophic condition (OEC) in the estuary was classified into the "high" category due to frequent occurrence of nuisance and toxic algal blooms in the mixing and seawater zones; (iv) Since the nutrient loadings (e.g.,DIN) in the river is expected to continue to increase in the near future following the population increase and rapid economic growth throughout the drainage basin, the nutrient-related symptoms in the estuary are likely to substantially worsen, which leads to the "worsen high" category for the definition of future outlook (DFO). The combinations of the three components (i.e., OHI, OEC, and DFO) lead to an overall grade as "bad" for the trophic status in the Changjiang River estuary.

  9. Nutrient loading tot he St. Lucie Estuary, Florida

    International Nuclear Information System (INIS)

    The St. Lucie Estuary receives freshwater input from two free-flowing creeks (the Old South Fork and Ten Mile Creek) and three major drainage canals (C23, C24 and C44). The South Florida Water Management District has monitored nutrient concentrations upstream of discharge structures on the canals since the late 1970s and nutrient levels in the Estuary since 1990. Analysis of nutrient concentrations at the canal discharge structures indicates that the total nitrogen concentrations in all three canals decreased during the period from 1979 to 2000. The phosphorus concentrations in discharges from C24 and C44 were relatively steady during the same time period, while the phosphorus concentration of canal C23 increased. Variation in nutrient loading was dominated by fluctuations in the volume of canal discharges. Analysis of water quality in the estuary showed that total nitrogen and phosphorus concentrations decreased from the upper estuary to the lower estuary. Years with high maximum chlorophyll a concentrations tended to occur in the years in which nutrient loading from the three canals was high. (author)

  10. Metals in sediments and benthic organisms in the Mersey estuary

    Science.gov (United States)

    Langston, W. J.

    1986-08-01

    Concentrations of twelve metals were determined in sediments, seaweed ( Fucus vesiculosus), winkles ( Littorina littorea), polychaetes ( Nereis diversicolor), suspension feeding bivalves ( Mytilus edulis, Cerastoderma edule) and deposit feeding bivalves ( Macoma balthica, Scrobicularia plana) collected from the Mersey estuary between April 1980 and June 1984. Sediments and organisms in the Mersey are moderately contaminated with most of the metals measured, but mercury concentrations are consistently higher than in other United Kingdom estuaries. Comparisons with other sites in the North West of England indicate that mercury residues in organisms, though primarily dependent on sediment concentrations, are also influenced by complexation with particulate organic matter which reduces the availability of mercury. The biological availability of arsenic in Mersey sediments is similarly influenced by complexation with iron oxyhydroxides. Nereis diversicolor and Macoma balthica are the most suitable indicator species in terms of abundance and widespread distribution along the estuary, and, for the majority of metals, tissue concentrations increase upstream, reflecting corresponding gradients in sediment contamination. However mid-estuarine peaks for tin, chromium copper and nickel in Nereis indicate more localised inputs to the estuary. Correlations between lead in sediments and organisms are poor; it is suggested that hydrophilic alkyl lead compounds may be the predominant biologically available forms. Progressive reductions in mercury contamination in sediments and mercury and lead in organisms have occurred in recent years, which coincide with efforts to reduce inputs of these metals to teh Mersey estuary.

  11. Dissolved organic carbon in the freshwater tidal reaches of the Schelde estuary

    DEFF Research Database (Denmark)

    Muylaert, K.; Dasseville, R.; De Brabandere, Loreto;

    2005-01-01

    To unravel the factors that regulate DOC dynamics in the freshwater tidal reaches of the Schelde estuary, DOC concentration and biodegradability were monitored in the upper Schelde estuary and its major tributaries. Although the Schelde estuary possesses a densely populated and industrialized cat...

  12. Eco-Morphological Problems in the Yangtze Estuary and the Western Scheldt

    NARCIS (Netherlands)

    Vriend, de H.J.; Wang, Z.B.; Ysebaert, T.; Herman, P.M.J.; Ding, P.X.

    2011-01-01

    This paper compares the Yangtze Estuary in China and the Western Scheldt Estuary in The Netherlands by their morphodynamic and ecological systems, their engineering works and estuarine management issues, and the major challenges in studying them. Physically speaking, the two estuaries are very diffe

  13. Distribution and sources of particulate organic matter in the Indian monsoonal estuaries during monsoon

    Digital Repository Service at National Institute of Oceanography (India)

    Sarma, V.V.S.S.; Krishna, M.S.; Prasad, V.R.; Kumar, B.S.K.; Naidu, S.A.; Rao, G.D.; Viswanadham, R.; Sridevi, T.; Kumar, P.P.; Reddy, N.P.C.

    in estuaries with deeper photic zone than other estuaries receiving higher suspended matter. The delta13CPOC and delta15CPN data suggest that relatively higher delta13CPOC (-27.9 to -22.6‰) and lower delta15CPN (0.7 to 5.8‰) were noticed in the estuaries...

  14. The reconstruction of a glacial lake outburst flood using HEC-RAS and its significance for future hazard assessments: an example from Lake 513 in the Cordillera Blanca, Peru

    Czech Academy of Sciences Publication Activity Database

    Klimeš, Jan; Benešová, M.; Vilímek, V.; Bouška, P.; Rapre, A.C.

    2014-01-01

    Roč. 71, č. 3 (2014), s. 1617-1638. ISSN 0921-030X R&D Projects: GA ČR(CZ) GAP209/11/1000 Institutional support: RVO:67985891 Keywords : GLOFs * debris flow * natural hazard * HEC-RAS * Cordillera Blanca Subject RIV: DE - Earth Magnetism, Geodesy, Geography Impact factor: 1.719, year: 2014

  15. Etiologia do declínio de mangostanzeiros no sul da Bahia

    Directory of Open Access Journals (Sweden)

    Eduardo César Araújo Paim

    2012-12-01

    Full Text Available O declínio do mangostanzeiro (Garcinia mangostana L. no litoral sul do Estado da Bahia é hoje o principal problema da cultura, sendo caracterizado por sintomas de murcha, amarelecimento, seca e queda de folhas. Este trabalho teve como objetivo acompanhar a evolução da sintomatologia da doença, isolar e identificar os potenciais patógenos causadores do declínio do mangostanzeiro. A doença começa com a necrose das radículas, a qual atinge as raízes secundárias, primárias e progride até à base do tronco que desenvolve lesões necróticas extensas. Os sintomas secundários são clorose, murcha e queda das folhas. Das amostras de tecidos lesionados de plantas doentes levadas ao laboratório, foram isolados e identificados os seguintes fungos: Lasiodiplodia theobromae, Lasiodiplodia parva, Mycoleptodiscus sp., Rhizopus sp., Stilbella sp., Trichoderma spp. e Aspergillus sp. Apenas L. theobromae e L. parva foram patogênicas a fragmentos de raízes e caules de mangostanzeiros in vitro e a mudas de mangostanzeiros em casa de vegetação, sendo o isolado da primeira espécie o mais virulento. A taxonomia do gênero Lasiodiplodia e algumas condições que influenciam no desenvolvimento da doença no campo foram analisadas.

  16. Interflow, overland flow and leaching of natural nutrients on an Alfisol slope of southern Bahia, Brazil

    Science.gov (United States)

    De Oliveira Leite, J.

    1985-09-01

    Two experimental plots for hydrologic studies, 3595 and 7060 m 2, were delimited on a slope of Alfisol planted with cacao in Bahia, Brazil. Volumes of overland flow and interflow were measured daily and samples of collected water were taken monthly for analysis of Ca, Mg, Na, K, N, P and Fe. The highest overland-flow volumes represented 24% and the highest interflow 53% of the rainfall but on the average the volumes of overland flow and interflow were found to represent 1 and 14% of the annual rainfall. The percentage of interflow increases with increasing rainfall. In winter, it is higher than in summer, except during the highest rains observed. The mean annual loss for calcium was 85.8 kg ha -1 yr -1; for magnesium 18.2; potassium 17.0; sodium 23.5; nitrogen 22.1; iron 5.5 and phosphorus 0.9. In relative terms, considering the chemical components of the soils, the K losses are highest, indicating that this element is most leachable. The interflow volumes and the amounts of Na, K, N and P correlated at the 1% significance level in both plots. A general conclusion is that the leaching of nutrients varied with the intensity of the interflow, especially for Na, K, N and P, the leaching of nutrients through overland flow being of less importance.

  17. Carbon Storage in Soil Size Fractions Under Two Cacao Agroforestry Systems in Bahia, Brazil

    Science.gov (United States)

    Gama-Rodrigues, Emanuela F.; Ramachandran Nair, P. K.; Nair, Vimala D.; Gama-Rodrigues, Antonio C.; Baligar, Virupax C.; Machado, Regina C. R.

    2010-02-01

    Shaded perennial agroforestry systems contain relatively high quantities of soil carbon (C) resulting from continuous deposition of plant residues; however, the extent to which the C is sequestered in soil will depend on the extent of physical protection of soil organic C (SOC). The main objective of this study was to characterize SOC storage in relation to soil fraction-size classes in cacao ( Theobroma cacao L.) agroforestry systems (AFSs). Two shaded cacao systems and an adjacent natural forest in reddish-yellow Oxisols in Bahia, Brazil were selected. Soil samples were collected from four depth classes to 1 m depth and separated by wet-sieving into three fraction-size classes (>250 μm, 250-53 μm, and cacao AFSs, the C contained in the macroaggregate fraction might become stabilized in the soil. The study shows the role of cacao AFSs in mitigating greenhouse gas (GHG) emission through accumulation and retention of high amounts of organic C in the soils and suggests the potential benefit of this environmental service to the nearly 6 million cacao farmers worldwide.

  18. Evaluation of environmental impacts arising from uranium extraction in Lagoa Real Bahia

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Suzicleide L.; Thibes, Ronaldo; Campos, Simara S., E-mail: suzilopes@ig.com.br, E-mail: thibes@uesb.edu.br, E-mail: simaracampos@gmail.com [Universidade Estadual do Sudoeste da Bahia (UESB), Itapetinga, BA (Brazil)

    2013-07-01

    Since the beginnings of the industrial era, there has been an increasing use of fossil fuels, causing a rising of about 30% in the level of carbon dioxide concentrations and, consequently, elevating the global temperature. In the present days, we witness a huge worldwide concern about the generation of energy without emitting polluting gases responsible for the global warming, the so called clean energy. In this way, nuclear energy has reemerged as an important efficient means for generating domestic and industrial energy without producing the toxic greenhouse effect gases. Brazil is one of the current highest economic developing countries, with various internal sectors demanding more and more new technologies and energy consumption. Although traditionally Brazil has lain mainly on hydric resources, nuclear energy appears as real option in the current scenario. In the present work we analyse uranium extraction and processing in the Brazilian Region of Lagoa Real Bahia. In the recent literature, there has appeared some localized works, analyzing environmental impacts arising from the uranium extraction in that region. Based on data collection and analysis of soil, water and teeth, these works represent a first effort in the environmental impacts issue. Building upon published technical results we aim at a global understanding of the problem. Considering such different data sets, we look for global answers relating general aspects of the uranium extraction in the region. We present a comparative study, stressing connections and pointing ou different aspects of the common environmental issue. (author)

  19. Assessing phototoxicity of petroleum using the bivalve Mulinia lateralis and the mysid Mysidopsis bahia

    International Nuclear Information System (INIS)

    One of the major inputs of PAHs in the marine environment is petroleum products. A large and often catastrophic source of petroleum is an oil spill, which releases concentrated quantities of PAHs into the water column. Intermediate molecular weight compounds remain in the water column for a relatively extended length of time. These compounds include phototoxic PAHs such as anthracene, fluoranthene, pyrene, and their substituted derivatives. Assessments of the environmental impact of marine oil spills have not included phototoxicity tests using pelagic larvae of benthic invertebrates. In this study, the photoreactive toxicity of individual PAHs, including anthracene, pyrene, and fluoranthene, were determined using the bivalve, Mulinia lateralis and the mysid, Mysidopsis bahia. Ultraviolet light exposures increased toxicity relative to fluorescent light for both species but a particularly dramatic response was seen using M. lateralis embryos. This species was relatively insensitive when exposed under fluorescent lights, but exhibited up to a 4,000 fold increase in toxicity under ultraviolet lights. Exposures with different types of petroleum (e.g., fuel oil number-sign 2 and crude oil) under fluorescent and ultraviolet light will demonstrate the utility of this bivalve and mysid for assessing oil spill-related acute and sublethal toxicity in the marine environment

  20. Gold mineralization in the Serra de Jacobina region, Bahia Brazil: tectonic framework and metallogenesis

    Science.gov (United States)

    Teixeira, João Batista Guimarães; de Souza, Jorge André Braz; da Silva, Maria da Glória; Leite, Carlson Matos Maia; Barbosa, Johildo Salomão Figueiredo; Coelho, Carlos Eduardo Silva; Abram, Maisa Bastos; Filho, Valter Mônaco Conceição; Iyer, Sundaram S. S.

    2001-07-01

    Gold deposits in the Serra de Jacobina region in Bahia, northeastern Brazil, occur in a belt of siliciclastic metasedimentary rocks intercalated with mafic and ultramafic rocks, and underlain by a tonalite-trondhjemite-granodiorite gneiss-dominated (TTG) basement. The siliciclastic sequence probably represents the remnants of a sedimentary basin, which formed in an Archean passive margin-type setting. The basin was subsequently subjected to a complex history of deformation, metamorphism, and hydrothermal activity, as a result of oblique collisional events in Late Archean and Paleoproterozoic. The majority of the auriferous occurrences in the area are hosted by quartz-pebble conglomerates, and have been noted to resemble placer-type deposits. However, structurally-controlled hydrothermal orebodies, and the formation of gold occurrences also in quartzites and mafic and ultramafic rocks, support an epigenetic model for the mineralizing event. Gold mineralization is interpreted to be an integral part of the late (~1.9 Ga) tectonothermal evolution of the Serra de Jacobina region. It was roughly coeval with the emplacement of large volumes of post-collisional type, peraluminous granitic magmas, during a regional strike-slip regime.

  1. Tectonic-thermal evolution from the northeast region of Minas Gerais and South of Bahia

    International Nuclear Information System (INIS)

    The northeast region of Minas Gerais and South Bahia are centered to the east of 420 00'WGr, between parallels 150 and 180. Its tectonic-thermal evolution is presented here with the support of stratigraphy/lithology, structural analysis, petrography, petrochemistry, regional metamorphism/retro metamorphism and radio chronology. It is pointed out that the evolution occurred in a mobile belt initiating its history in the terminal Archean up to Inferior Proterozoic. The northeast of the region attained crustal stability during 1700 My up to 1800 My (Sao Francisco Craton) meanwhile the rest of the zone kept mobilized till upper proterozoic times. Radio chronological studies suggest for the post tectonic granitic rocks, ages from the brasiliano cycle as well as for those pre-existing rocks which suffered isotopic regeneration and metamorphose in that same cycle an original age from Archean to inferior proterozoic times, except for those which are situated in the northeast part of the region. Petrochemical data point to an origin from sedimentary processes for the majority of the metamorphosed rocks in this region. (author)

  2. Evaluation of environmental impacts arising from uranium extraction in Lagoa Real Bahia

    International Nuclear Information System (INIS)

    Since the beginnings of the industrial era, there has been an increasing use of fossil fuels, causing a rising of about 30% in the level of carbon dioxide concentrations and, consequently, elevating the global temperature. In the present days, we witness a huge worldwide concern about the generation of energy without emitting polluting gases responsible for the global warming, the so called clean energy. In this way, nuclear energy has reemerged as an important efficient means for generating domestic and industrial energy without producing the toxic greenhouse effect gases. Brazil is one of the current highest economic developing countries, with various internal sectors demanding more and more new technologies and energy consumption. Although traditionally Brazil has lain mainly on hydric resources, nuclear energy appears as real option in the current scenario. In the present work we analyse uranium extraction and processing in the Brazilian Region of Lagoa Real Bahia. In the recent literature, there has appeared some localized works, analyzing environmental impacts arising from the uranium extraction in that region. Based on data collection and analysis of soil, water and teeth, these works represent a first effort in the environmental impacts issue. Building upon published technical results we aim at a global understanding of the problem. Considering such different data sets, we look for global answers relating general aspects of the uranium extraction in the region. We present a comparative study, stressing connections and pointing ou different aspects of the common environmental issue. (author)

  3. The uranium provinces of the Lagoa Real District-Bahia (Brazil)

    International Nuclear Information System (INIS)

    The Lagoa Real Project from NUCLEBRAS represents one of the most important uranium provinces in Brazil today. The project is limited by the 42000' - 42030'W and 13030' - 14015'S geographic coordinates, covering an area of 4,540 square kilometres in the South-Central part of Bahia State. Since 1977, 13 radiometric anomalies have been detected. As part of the Archean basement, metasomatized and cataclastic metamorphic rocks outcrop in the area. The uranium mineralization occurs in albitite bodies parallel to its foliation and is represented by fine grained uraninite. Lying roughly in N-S direction the albitite bodies are tabular and elongated. Each albitite body may reach over 1 Km of extensoin, 100m of width, and 350m of depth. 207Pb/206Pb age determination indicated 820 my as the age of uraninite crystallization. An ore reserve of 27,000 ton of U3O8 at an average grade of 0.15% U3O8 has been determined following geologic, topographic, and radiometric survey over an area of 700 hectares and the completion of 160 drill-holes totalizing 23,000 metres. The potential uranium reserve of the Lagoa Real District has not as yet been properly evaluated because from the known orebodies only six have been sistematically investigated to date. (Author)

  4. Uraniferous albitites from the Lagoa Real Uranium Province, state of Bahia, Brazil

    International Nuclear Information System (INIS)

    The Uranium Province of Lagoa Real is located in the region of Caetite, throughout the south-central portion of the state of Bahia. The basic chronostratigraphic units are the metamorphic rocks - granitic rocks and gneisses of the Archean basement - and cataclastic metasomatic rocks - albitites and quartzo-feldspathic lithologies of the lower Proterozoic. The albitites, host rocks for the uranium mineralization, occur regionally as numerous lenticular and discontinuos bodies arranged submeridionally according to two main alignments forming an arc, and are therefore called linear albities in allusion to similar features in Kasachstan, Russia, where they were first given this designation. The name albitite was employed to designate the metasomatites in which albitite dominates over the other minerals. The uranium mineralization consists of uraninite and pitchblende and is confined to the ore zones of those albitites containing aegirine, alkali-amphiboles, andradite, biotite and carbonates Furthermore, it displays lithologic-structural control, the morphology being controlled by the location of shear zones. This mineralization usually takes the shape of ore shoots which pitch in the direction and dip of the lineation. The authors describe the various types of albitites (mineralized or unmineralized) and their structural and petrographic characteristics, mode of occurence, geometry, metasomatic alterations, chemistry, uranium mineralization, as well as their genetic aspects. (Author)

  5. Ages of granites of the Serrinha Nucleus, Bahia (Brazil): an overview

    International Nuclear Information System (INIS)

    The ages of granites of the Serrinha Nucleus (SN), in the eastern part of Bahia State, Brazil are poorly constrained and radiometric dating is mainly by the Rb-Sr whole rock isochron method, indicating a complex intrusive history. New Pb-Pb and U-Pb zircon for plutons widely distributed within the SN terrains range from Archean (>3070 Ma) to Paleoproterozoic (2067 Ma) and generally support the interpretation that at least three plutonic events affect these terrains. The range of ages evidently constitutes a large interval of regional granitic emplacement which can be divided into three principal domains: pre, syn and late/post tectonic. The new Archean ages (2.7 to 3.1 Ga.) by the U-Pb zircon method indicate reworking of an older crust during the Paleoproterozoic plutonic event in the SN region and clearly point to the existence of an Archean basement prior to 2.7 Ga. (Jequie Cycle). The younger ages help to further constrain the extension and age of Archean components of the Sao Francisco Craton which is important for a complete understanding of the Precambrian geology of that part of Brazil. (author)

  6. Determination of uranium partition coefficients of a semi-arid soil in Bahia

    Energy Technology Data Exchange (ETDEWEB)

    Fernandes, Heloisa H.F.; Pontedeiro, Elizabeth M.; Su, Jian, E-mail: heloisa@lasme.coppe.ufrj.br, E-mail: bettinadulley@hotmail.com, E-mail: sujian@lasme.coppe.ufrj.br [Coordenacao dos Cursos de Pos-Graduacao em Engenharia (COPPE/UFRJ), Rio de Janeiro, RJ (Brazil). Lab. de Simulacao e Metodos de Engenharia; Dourado, Eneida R.G., E-mail: eneida@inb.gov.br [Industrias Nucleares do Brasil (INB), Rio de Janeiro, RJ (Brazil)

    2013-07-01

    In mining and processing industries, the subsurface is one of the most vulnerable compartments to environmental contamination. Understanding the interactions between soil and contaminants is critical for predicting the possible environmental impacts caused by mining and milling operations. One of the main parameters used for this purpose is the partition (or distribution) coefficient, K{sub d}, which allows a relatively simple modeling approach by grouping various sorption phenomena into a single value. However, this parameter is strongly influenced by the physical and chemical characteristics of the medium, such as soil type, pH and solution composition. Thus, this study aims to assess the values of K{sub d} for uranium of typical soils from Bahia's semi-arid region using two different types of solute, one being a standard solution of uranyl acetate and one the liquor of uranium generated during processing. To calculate this parameter, batch adsorption experiments were carried out and adsorption isotherms (linear, Langmuir and Freundlich) were constructed using the Mathematica software. Results obtained for a single type of soil showed reduced values of K{sub d} for a liquor containing uranium when compared to values obtained with the uranyl acetate solution. This indicates that uranium from liquor is less adsorbed onto soil particles, and hence may move more quickly into the subsurface. (author)

  7. Local ecological knowledge of artisanal fishermen in southern Bahia, Brazil, about trophic interactions of sharks

    Directory of Open Access Journals (Sweden)

    Márcio Luiz Vargas Barbosa Filho

    2016-09-01

    Full Text Available Despite the serious threats that affect shark species living along the central coast of Brazil, knowledge about the life history of these animals is still scarce. The present study describes the knowledge and perceptions of fishermen from southern Bahia, Brazil, on the trophic interactions of sharks. The objective of this work was to generate information that contributes to a better understanding of the life history of sharks from this poorly known region. In 2012, semi-structured interviews were conducted with 65 fishermen, with over 15 years of experience, about fisheries and aspects of shark feeding behavior. The study found that the participants have comprehensive ethno-ecological knowledge about shark feeding habits, describing 39 types of items as components of the diets of these animals. They are also able to recognize the favored items in the diet of each ethnospecies of shark. Similar studies about shark feeding habits along the Brazilian coast should be developed. This will generate more detailed knowledge and/or new scientific hypotheses about the interspecific relationships of these predators and their prey.

  8. Flora and phytosociology of an area of Restinga along the northern Coast of Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Christiano Marcelino Menezes

    2012-03-01

    Full Text Available Areas of restinga are geologically recent environments. The species that inhabit this type of ecosystem are typical of adjacent areas, such as rain forest, tabuleiro forest and caatinga, and form a diverse community of trees, shrubs and erect and prostrate herbs. The goal of this work was to evaluate the vegetation in an area of restinga located along Praia do Forte, in the state of Bahia, Brazil. Four 200m transects where made within five plots of 100m2 each, and 1,640 individuals within 68 species were collected. High species diversity was found in transects 1 and 2 (H´ = 3.882 and 3 and 4 (H´ = 3.835. The most representative families were Myrtaceae, Rubiaceae and Malpighiaceae. Based on the species composition, a significant difference (p < 0.001 was found between the sampled areas, and the findings show that there are two distinct plant communities in this region, Mata deRestinga and Restinga em Moitas.

  9. ANALYSIS OF AUDITORS IN HEALTH AS TO PUBLIC THE PHYSIOTHERAPY SERVICES OF THE BAHIA STATE

    Directory of Open Access Journals (Sweden)

    Ítalo Ricardo Santos Aleluia

    2013-01-01

    Full Text Available The audit in the SUS searchers the effectiveness and quality in the actions and healt services given to the population. Although the multiprofessionalism in such activity is recognized nationally, there are categories such as Physiotherapists that not work in the teams, this service being audited by professionals non-technical. Soon, gives credit that this can cause fragilities in the control of the resources and quality of the Physiotherapy services givento the users. This study it had as objective to identify the main difficulties encountered by auditors of the SUS in the services of Physiotherapy in the Bahia State. It is a study of transversal with a convenience sample of 40 auditors of the SUS, trough a semi-structured questionnaire. There are difficulties found had demonstrated a direct relation between the technician knowledge auditor and better or worse performance in the process of auditing of the Physiotherapy, translates the relevance the physiotherapist on audit of team the SUS, since this is the professional who dominates the knowledge technician of the area .

  10. Prevalência de transtornos mentais comuns em trabalhadores de enfermagem em um hospital da Bahia

    Directory of Open Access Journals (Sweden)

    Eder Pereira Rodrigues

    2014-04-01

    Full Text Available Neste estudo, objetivou-se descrever a prevalência de "suspeitos" de transtornos mentais comuns (TMC em trabalhadores de enfermagem em um hospital geral, no estado da Bahia. Realizou-se um estudo epidemiológico, de corte transversal, com 309 profissionais de enfermagem, que trabalhavam em atividades assistenciais em um hospital de grande porte. Os profissionais de enfermagem referiram sobrecarga de trabalho e baixa remuneração. As queixas de saúde mais frequentes estavam relacionadas à postura corporal e a saúde mental. A prevalência geral de "suspeitos" de TMC foi de 35,0%. Em relação aos aspectos psicossociais do trabalho, relataram uma alta demanda psicológica e baixo controle sobre as atividades laborais. Os resultados obtidos apontam que as condições de trabalho e saúde observadas, não são adequadas para a efetiva realização do trabalho de enfermagem no hospital estudado.

  11. Natural radioactivity in extreme south of Bahia, Brazil, using gamma-ray spectrometry

    International Nuclear Information System (INIS)

    The concentrations activity of natural radionuclides in beach sand in extreme south of Bahia-Brazil was measured using gamma-ray spectrometry. The activity concentrations of 226Ra, 232Th and 40K in beach sand ranged from 14.5 to 8,318.4, 20.5 to 18,450.0, 15.4 to 3,109.0 Bq/kg, with a mean value of 1,078.2, 2,429.6, and 417.0 Bq/kg respectively. The values of radiation hazard indexes in sands of Alcobaca, Caraiva and Cumuruxatiba are higher than the limits preconized by Beretka and Mathew. The use of these sands may be not safe in building constructions. The results show that the absorbed dose rates range from 20.4-15,116.6 nGy/h with mean value of 1762.7. The highest value of gamma dose rates among the studied beaches was found in Cumuruxatiba (15,116.6 nGy/h). The annual effective dose varied between 0.028 and 18.539 mSv/year, with a mean of 2.162 mSv/year. Values of Alcobaca, Trancoso, Caraiva and Cumuruxatiba are higher than the worldwide average for outdoor annual effective dose, 0.07 mSv/year. (author)

  12. Ethno-malacological knowledge of bivalve mollusks gathering in Acupe mangrove, Santo Amaro, Bahia

    Directory of Open Access Journals (Sweden)

    Francisco José Bezerra Souto

    2009-12-01

    Full Text Available The mangrove is a highly productive ecosystem that carries out important ecological functions and that historically it has been used for the subsistence and income of countless craft fishing communities. In the mangroves of Todos os Santos Bay, including those of the District of Acupe (Santo Amaro – Bahia State, the bivalve mollusks (shellfish are among the most important resources, and their gathering is known as “mariscagem”. This work aims to characterize the knowledge of the local female shellfish gatherers regarding the biology and ecology of bivalve shellfish. Semi-structured interviews were used with local shellfish women (N=54 involving ethnotaxonomy, trophic ecology, hydrodynamics, fenology and ethnocronology. Etic-emic analisys of the data was chosen in order to compare the information obtained in the field to that from the academic literature. The results demonstrated that the shellfish women of Acupe have a significant knowledge of bivalve shellfish, in addition to aspects related to the dynamics of local mangroves, that is sometimes compatible with academic knowledge.

  13. COMMUNITY STRUCTURE OF THE TINTINNIDS (CILIOPHORA: SPIROTRICHEA IN THE REGION OF ABROLHOS (BAHIA, BRAZIL

    Directory of Open Access Journals (Sweden)

    Alejandro Esteweson Santos Faustino da Costa

    2015-03-01

    Full Text Available The tintinnid community in the region of Abrolhos (Bahia, Brazil was studied during February 2012. We hypothesized that the tintinnid community structure varies significantly over a short temporal scale (photoperiod, as well as spatially over a short scale (on and away from the reefs, and a broad scale (distance of the reef area from the coast. Three areas in Abrolhos were studied. Two sampling points were delimited in each area, where the tintinnids were collected by horizontal subsurface plankton net (20 μm mesh-size hauls. Sampling was undertaken every 6 hours, during 24 hours in each area. 24 species were found, all of which are of neritic, cosmopolitan, and of warm-water distribution. The only hypothesis that is not rejected is that related to variability on an extensive spatial scale. There are significant differences between the samples collected in the three areas studied (ANOVA p = 0.017. The clustering of the species highlights a continent-ocean gradient. There is one community typical of the internal arc, composed mainly of neritic agglutinated tintinnids, and another community typical of the external arc, composed mainly of hyaline warm-water and cosmopolitan tintinnids. The factor which exercises the greatest influence on the tintinnid community in the Abrolhos region is the distance from the coast.

  14. Uranium deposits of Lagoa Real uranium Province, state of Bahia, Brazil

    International Nuclear Information System (INIS)

    The Uranium Province of Lagoa Real is situated in the south-central part of the state of Bahia and constitutes, at the present moment, one of the most promising uranium districts of Brazil. The first anomaly was recorded in 1977 and, since then intense exploration and evaluation has been carried out in the area, resulting in the characterization of six ore deposits until now. Simultaneously, NUCLEBRAS has performed tests to establish the beneficiation characteristics of the ore, and developed preliminary mining plans. The host rock for the ore mineralization is related to sodic metasomatism and controlled by lithology and structure. The ore exhibits granoblastic texture, fine to coarse grain size, and the principal uranium minerals are uraninite, and, in minor quantities, pitchblende and uranophane. The solubility is over 90% of the U3O8 contained, with an average acid consumption of 35 Kg per ton of ore treated. This paper presents a brief description of the main ore deposits and touches on their general characterisitcs. As an example, the deposit 'Jazida Cachoeira' is dealt with in greater detail, since this deposit is considered in the present context to be the most important one in the province. (Author)

  15. Effects of heavy metal contamination on the macrobenthic fauna in estuaries: The case of the Seine estuary

    Energy Technology Data Exchange (ETDEWEB)

    Dauvin, Jean-Claude [Station Marine de Wimereux, Universite des Sciences et Technologies de Lille, CNRS FRE 2816 ELICO - Ecosystemes Littoraux et Cotiers, 28, Avenue Foch, BP 80, F-62930 Wimereux (France)], E-mail: jean-claude.dauvin@univ-lille1.fr

    2008-07-01

    Heavy metal contamination levels are generally higher in estuaries than in the open sea. Some estuaries, the Seine estuary for example, have particularly high pollution levels of metals, yet continue to support a very high benthic biomass and remain quite productive. Measurements of sediment contamination are highly variable due to diverse chemical analysis methods, sediments origin and sources of contaminants found in the estuaries. Salinity appears to be the principal factor controlling contaminant distribution in the sediment and the overlying and/or interstitial waters; it also affects the bioavailability of contaminants in estuarine sediments. Of course, the response to contaminants varies greatly among species and assemblages. Trace metals explain only a small part of the variation in benthic community structure. Some species, such as the shrimp Crangon crangon, appears vulnerable to metal pollution, while other species, such as Scrobicularia plana, are able to tolerate quite high levels of cadmium in their tissue. This paper demonstrates the wide variability of benthic responses to contamination, which is probably due to the high spatio-temporal heterogeneity of the estuary. To reduce the problems due the heterogeneity and variability observed to date in the available results, it will be necessary to encourage integrated estuarine studies, in which sedimentologists, chemists, and biologists work together on the same campaigns at the same sites.

  16. Effects of heavy metal contamination on the macrobenthic fauna in estuaries: the case of the Seine estuary.

    Science.gov (United States)

    Dauvin, Jean-Claude

    2008-01-01

    Heavy metal contamination levels are generally higher in estuaries than in the open sea. Some estuaries, the Seine estuary for example, have particularly high pollution levels of metals, yet continue to support a very high benthic biomass and remain quite productive. Measurements of sediment contamination are highly variable due to diverse chemical analysis methods, sediments origin and sources of contaminants found in the estuaries. Salinity appears to be the principal factor controlling contaminant distribution in the sediment and the overlying and/or interstitial waters; it also affects the bioavailability of contaminants in estuarine sediments. Of course, the response to contaminants varies greatly among species and assemblages. Trace metals explain only a small part of the variation in benthic community structure. Some species, such as the shrimp Crangon crangon, appears vulnerable to metal pollution, while other species, such as Scrobicularia plana, are able to tolerate quite high levels of cadmium in their tissue. This paper demonstrates the wide variability of benthic responses to contamination, which is probably due to the high spatio-temporal heterogeneity of the estuary. To reduce the problems due the heterogeneity and variability observed to date in the available results, it will be necessary to encourage integrated estuarine studies, in which sedimentologists, chemists, and biologists work together on the same campaigns at the same sites. PMID:18045624

  17. Effects of heavy metal contamination on the macrobenthic fauna in estuaries: The case of the Seine estuary

    International Nuclear Information System (INIS)

    Heavy metal contamination levels are generally higher in estuaries than in the open sea. Some estuaries, the Seine estuary for example, have particularly high pollution levels of metals, yet continue to support a very high benthic biomass and remain quite productive. Measurements of sediment contamination are highly variable due to diverse chemical analysis methods, sediments origin and sources of contaminants found in the estuaries. Salinity appears to be the principal factor controlling contaminant distribution in the sediment and the overlying and/or interstitial waters; it also affects the bioavailability of contaminants in estuarine sediments. Of course, the response to contaminants varies greatly among species and assemblages. Trace metals explain only a small part of the variation in benthic community structure. Some species, such as the shrimp Crangon crangon, appears vulnerable to metal pollution, while other species, such as Scrobicularia plana, are able to tolerate quite high levels of cadmium in their tissue. This paper demonstrates the wide variability of benthic responses to contamination, which is probably due to the high spatio-temporal heterogeneity of the estuary. To reduce the problems due the heterogeneity and variability observed to date in the available results, it will be necessary to encourage integrated estuarine studies, in which sedimentologists, chemists, and biologists work together on the same campaigns at the same sites

  18. Waterfowl migration and distribution in North West estuaries. V. 2

    International Nuclear Information System (INIS)

    Waterfowl populations may be affected by the proposed tidal barrage across the Mersey. A study was performed with three objectives: (1) to evaluate the patterns of usage of the intertidal flats of the Mersey estuary by waders and wildfowl and to establish which are the preferred areas; (2) to identify the places of origin and movement patterns of the populations of waders and wildfowl that visit the Mersey estuary; and (3) to evaluate evidence regarding the capacity of British estuaries to absorb waders and wildfowl populations which might be displaced by a Mersey Barrage. The text and tables of results of this study have already been presented in Volume 1. Volume 2 contains the figures describing the results (U.K)

  19. Cadmium in the Amazonian Guajara Estuary: Distribution and remobilization

    Energy Technology Data Exchange (ETDEWEB)

    Nascimento, S.F. [Instituto de Quimica, Departamento de Geoquimica, Universidade Federal Fluminense (Brazil)]. E-mail: nascimento@lisa.univ-paris12.fr; Kurzweil, H. [Institut fuer Petrologie, Universitaet Wien (Austria); Wruss, W. [Institut fuer Chemische Technologie anorganischer Stoffe, Technische Univesitaet Wien (Austria); Fenzl, N. [Nucleo de Altos Estudos Amazonicos, Universidade Federal do Para (Brazil)

    2006-03-15

    Extremely high total cadmium concentrations (average about 500 mg/kg) together with very small (average of 1.1 {mu}g/l) dissolved available cadmium have been found in the more acidic deeper layers of the bottom sediments of the Brazilian Amazonian Guajara Estuary. The paper shows that climatic changes and the periodic input of the Atlantic waters into the Estuary appear to have no direct influence on annual average total cadmium concentration, but they affect accumulation, distribution and remobilization of cadmium in different ways during the rainy season (February/March) and the dry season (November/December). Even if only a very small part of the total Cd is available, the concentrations of dissolved Cd in the Estuary are still high enough to cause environmental concern, if compared with concentrations in natural freshwater ecosystems. - Distribution and remobilization of cadmium is affected differently by season.

  20. Evidências sorológicas da circulação do arbovírus Rocio (Flaviviridae na Bahia

    Directory of Open Access Journals (Sweden)

    Andréa Straatmann

    1997-12-01

    Full Text Available Oito casos com anticorpos anti-Rocio são descritos, de quatro cidades do Estado da Bahia, sendo seis portadores de anticorpos IgG (IH e TN e dois IgM (ELISA e TN. Os autores comentam sobre a circulação deste arbovírus no Estado, e as possibilidades de reações cruzadas com outros vírus antigenicamente relacionados.Eight antibody anti-Rocio cases, from four distinct cities in the state of Bahia, are described; six of them being carriers of the antibody IgG (HI and NT and two IgM (ELISA and NT. The authors comment on the circulation of these arboviruses in the state of Bahia and on the possibility of cross reactions with other antigenically related viruses.

  1. Modelling cascading and erosional processes for glacial lake outburst floods in the Quillcay catchment, Huaraz, Cordillera Blanca, Peru

    Science.gov (United States)

    Baer, Patrick; Huggel, Christian; Frey, Holger; Chisolm, Rachel; McKinney, Daene; McArdell, Brian; Portocarrero, Cesar; Cochachin, Alejo

    2016-04-01

    Huaraz as the largest city in Cordillera Blanca has faced a major disaster in 1941, when an outburst flood from Lake Palcacocha killed several thousand people and caused widespread destruction. Recent studies on glacial lake outburst flood (GLOF) modelling and early warning systems focussed on Lake Palcacocha which has regrown after the 1941 event, from a volume of half a million m3 in 1974 to a total volume of more than 17 million m3 today. However, little research has been conducted so far concerning the situation of other lakes in the Quillcay catchment, namely Lake Tullparaju (12 mill. m3) and Cuchillacocha (2.5 mill. m3), which both also pose a threat to the city of Huaraz. In this study, we modelled the cascading processes at Lake Tullparaju and Lake Cuchillacocha including rock/ice avalanches, flood wave propagation in the lake and the resulting outburst flood and debris flows. We used the 2D model RAMMS to simulate ice avalanches. Model output was used as input for analytical 2D and 3D calculations of impact waves in the lakes that allowed us to estimate dam overtopping wave height. Since the dimension of the hanging glaciers above all three lakes is comparable, the scenarios in this study have been defined similar to the previous study at Lake Palcacocha. The flow propagation model included sediment entrainment in the steeper parts of the catchment, adding up to 50% to the initial flow volume. The results for total travel time as well as for inundated areas and flow depth and velocity in the city of Huaraz are comparable to the previous studies at Lake Palcacocha. This underlines the importance of considering also these lakes within an integral hazard analysis for the city of Huaraz. A main challenge for modelling GLOFs in the Quillcay catchment using RAMMS is the long runout distance of over 22 km combined with the very low slope gradient of the river. Further studies could improve the process understanding and could focus on more detailed investigations

  2. Spatio-temporal assessment of WRF, TRMM and in situ precipitation data in a tropical mountain environment (Cordillera Blanca, Peru

    Directory of Open Access Journals (Sweden)

    L. Mourre

    2015-07-01

    Full Text Available The estimation of precipitation over the broad range of scales of interest for climatologists, meteorologists and hydrologists is challenging in high altitudes of tropical regions, where the spatial variability of precipitation is important while in situ measurements remain scarce largely due to operational constraints. Three different types of rainfall products – ground based, satellite derived, RCM outputs – are compared here during the hydrological year 2012/13 in order to retrieve rainfall patterns at time scales ranging from sub-daily to annual over a watershed of approximately 10 000 km2 in Peru. It is a high altitude catchment, located in the region of the Cordillera Blanca, with 41 % of its area above 4000 m a.s.l. and 340 km2 glaciated. Daily in situ data are interpolated using a kriging with external drift (KED algorithm; the satellite product is TRMM 3B42, which incorporates monthly gauge data; RCM outputs are obtained from WRF run with a Thompson microphysical scheme at three nested resolutions: 27, 9 and 3 km. The performances of each product are assessed from a double perspective. A local comparison with gauge data is first carried out when relevant (diurnal and seasonal cycles, statistics of rainfall occurrence; then the ability of each product to reproduce some well-known spatial features of rain fields at various time scales (from annual down to daily is analysed. WRF simulations largely overestimate the annual totals, especially at low spatial resolution, while reproducing correctly the diurnal cycle and locating the spots of heavy rainfall more realistically than either the ground-based KED or the TRMM products. The main weakness of the KED data is the production of annual rainfall maxima over the summit rather than on the slopes, induced by a lack of in situ data above 3800 m a.s.l. One main limitation of the TRMM product is its poor performance over ice-covered areas because ice on the ground behaves in a similar way as

  3. Radium isotopes in the Orinoco estuary and Eastern Caribbean Sea

    International Nuclear Information System (INIS)

    Radium isotopes provide a means of identifying the source of freshened waters in the ocean and determining the time elapsed since these waters were in the estuary. The authors present evidence that during April, waters from the Amazon mixing zone pass within 50 km of the mouth of the Orinoco River. These Amazon waters are characterized by a lower 228Ra/226Ra activity ratio (AR) than are waters from the Orinoco at similar salinities. During autumn, the increased discharge of the Orinoco displaces the freshened Amazon waters seaward, yet the two can be distinguished clearly. Within the Caribbean Sea, waters of Orinoco origin carry a characteristic radium signature including excess activities of 224Ra. This isotope may be used to estimate the time elapsed since the waters were removed from contact with sediments. Current speeds based on 224Ra dating ranged from 15 to 33 cm/s during April. The radium isotopes also provide an assessment of sediment mixing in the estuary. During low discharge (April), considerable mixing of older sediment by physical or biological processes or dredging maintained high activities of 228Ra in the estuary and produced the highest 228Ra/226Ra AR's yet measured in any estuary. During high discharge (September), a large fraction of the 228Ra was derived from desorption from fresh sediment rather than mixing of older sediments. Activities of 224Ra were high in the estuary during both high and low discharge, indicating that considerable mixing of recently introduced sediment must occur during each period. During April, 224Ra and 228Ra activities in the water were about equal, indicating that most of the sediment being resuspended had been stored in the estuary long enough to reestablish radioactive equilibrium in the 232Th decay series (i.e., 20 years). 19 refs., 11 figs., 3 tabs

  4. Câncer do pênis: estudo da sua patologia geográfica no Estado da Bahia, Brasil Cancer of the penis: a study in pathological geography in Bahia State, Brazil

    Directory of Open Access Journals (Sweden)

    Aryon de Almeida Barbosa Júnior

    1984-12-01

    Full Text Available Foram estudados 811 pacientes com o diagnóstico histológico de câncer do pênis, procedentes do Estado da Bahia, Brasil, entre 1952 e 1983. Cinqüenta por cento dos pacientes tinham entre 46 e 61 anos de idade. Cerca de 80% de todos os pacientes eram procedentes das regiões interioranas do Estado. A mesorregião do Leste Baiano foi a que apresentou freqüência mais elevada, principalmente as microrregiões do Recôncavo Baiano, Jequié, Feira de Santana e Serrinha. O lapso de tempo entre o aparecimentos da primeira lesão e o diagnóstico foi maior do que três meses em mais de 80% dos casos. Fimose foi a principal condição associada, estando presente em 63% dos casos. A prática sistemática da circuncisão na infância é meio eficaz de prevenção da doença, e deve ser estimulada.A study of 811 patients from Bahia State with histological cancer of the pênis is presented. Fifty per cent of the tumors were observed in persons of between 46 and 61 years of age. Nearly 80% of the penile cancer patients came from rural areas. The greatest number of patients came from the Eastern region of Bahia, notably from de Recôncavo Baiano, Jequié, Feira de Santana and Serrinha. More than 80% of the cases sought medical advice for the first time three months or more after the appearance of the initial lesion. Sixty-three per cent had pre-existing phimosis. The systematic practice of circuncision during infancy constitutes an effective prophylatic measure and should be encouraged.

  5. Aspectos clínico-epidemiológicos das neoplasias cerebrais na faixa etária pediátrica no Estado da Bahia, Brasil Clinical epidemiological aspects of cerebral neoplams in childhood in the State of Bahia, Brazil

    OpenAIRE

    NAYARA ARGOLLO; INES LESSA

    1999-01-01

    O estudo tem como objetivo descrever aspectos relevantes da clínica e da epidemiologia das neoplasias cerebrais em crianças entre 1 e 15 anos, no Estado da Bahia, primeiro semestre de 1995. Utilizou-se desenho de corte transversal para o levantamento de todos os casos novos e preexistentes de neoplasia cerebral diagnosticados através da neuroimagem entre todas as crianças que realizaram estes exames. Em 2 128 exames foram diagnosticados 48 casos de neoplasia cerebral, sendo 19 deles incidente...

  6. Cacau "Jaca" resistente a Ceratocystis fimbriata na região cacaueira da Bahia, Brasil Resistance of cacao "Jaca" to Ceratocystis fimbriata in the cacao growing region of Bahia, Brazil

    OpenAIRE

    Stela Dalva V. M. Silva; Márcia Cristina Paim; Wildson M. Castro

    2004-01-01

    Cento quarenta e quatro genótipos de cacaueiros (Theobroma cacao) testados "in vitro", apresentaram-se suscetíveis a altamente suscetíveis ao isolado 2591 de Ceratocystis fimbriata na Bahia. A variedade conhecida como cacau "Jaca" foi o material genético que apresentou maior resistência ao patógeno entre todos os materias testados.One hundred and forty four cacao (Theobroma cacao) genotypes testified "in vitro", showed susceptibility to high susceptibility to the isolate 2591 of Ceratocystis ...

  7. Câncer do pênis: estudo da sua patologia geográfica no Estado da Bahia, Brasil Cancer of the penis: a study in pathological geography in Bahia State, Brazil

    OpenAIRE

    Aryon de Almeida Barbosa Júnior; Paulo Roberto Fontes Athanázio; Benedito Oliveira

    1984-01-01

    Foram estudados 811 pacientes com o diagnóstico histológico de câncer do pênis, procedentes do Estado da Bahia, Brasil, entre 1952 e 1983. Cinqüenta por cento dos pacientes tinham entre 46 e 61 anos de idade. Cerca de 80% de todos os pacientes eram procedentes das regiões interioranas do Estado. A mesorregião do Leste Baiano foi a que apresentou freqüência mais elevada, principalmente as microrregiões do Recôncavo Baiano, Jequié, Feira de Santana e Serrinha. O lapso de tempo entre o aparecime...

  8. Residências terapêuticas: experiência dos residentes de saúde mental do programa da universidade do estado da Bahia (Therapeutic residency: the experience of mental health residents at the state university of Bahia

    Directory of Open Access Journals (Sweden)

    Josenaide Engrácia dos Santos

    2009-01-01

    Full Text Available Resumo: O presente artigo é produto da experiência dos residentes do Núcleo de Saúde Mental da Residência Multiprofi ssional em Saúde da Universidade do Estado da Bahia (UNEB, na Residência Terapêutica (RT do distrito sanitário de Itapagipe, localizado em Salvador-Bahia. Essa experiência teve inicio com a inserção dos residentes no Centro de Atenção Psicossocial - CAPS II do referido distrito, que, no planejamento das ações desenvolvidas no território, priorizou a residência terapêutica como lugar para desenvolver cuidado, por considerá-la dispositivo com possibilidade de reinvenção do existir do sujeito na comunidade. A escuta, o vínculo, o corpo, a música e a rua foram os principais recursos utilizados no processo de aproximação entre os atores envolvidos. Apesar de enigmática, na medida em que suscitou vários problemas sem respostas, a experiência na RT mostrou-se um terreno fértil para promover a cidadania e autonomia. Foi também reveladora, porque sinalizou possibilidades de reinvenção da vida, considerando todas as controvérsias da estratégia utilizada.Abstract:The present paper is the outcome of the experience of residents of the multi professional residency program from the Mental Health Nucleus at the University of the State of Bahia (UNEB, specifi cally in the residency program in therapeutics, implemented in the health district of Itapagipe, Salvador, Bahia. The experience began at the Center for Psychosocial Healthcare (CAPS II in the aforementioned district, which, in planning the actions to be developed, gave priority to the use of the residential program as a means of developing a strategy of care, since it was considered that an initiative of this type would successfully redefi ne the existence of the individual in the community. The main resources used in the process of approximating the actors involved included listening, bonding, and the use of body language, music and the streets. The

  9. Diversidade genética entre acessos de cacau de fazendas e de banco de germoplasma na Bahia Genetic diversity among farm and germplasm bank accessions of cacao in Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Jeiza Botelho Leal

    2008-07-01

    Full Text Available O objetivo deste trabalho foi avaliar a diversidade genética de acessos de cacau, selecionados previamente como produtivos e resistentes à vassoura-de-bruxa na Bahia, e estudar suas inter-relações com genótipos no banco de germoplasma. Amostras de DNA de folhas dos 120 acessos, coletados em 17 fazendas de sete municípios do Sul da Bahia, foram amplificadas pela técnica de RAPD ("random amplified polymorphic DNA". Os coeficientes de dissimilaridade genética, calculados pelo método de Jaccard a partir das bandas RAPD, permitiram evidenciar, pela análise de agrupamento, que a maioria das seleções das fazendas (89,2% agrupou-se com acessos do banco de germoplasma considerados representativos da diversidade de cacau (híbridos, trinitários, Scavinas, amazônicos e cacau-comum. As demais seleções distribuíram-se em outros sete grupos distintos. Há elevada diversidade genética entre as seleções das fazendas, e algumas delas devem ter-se originado de genitores não incluídos nesta análise. Esses materiais apresentam potencial para seleção de clones com maior diversidade para novos cruzamentos ou uso pelos agricultores.The objective of this work was to assess genetic diversity of farm cacao accessions, previously selected as productive and resistant to witch broom in Bahia, Brazil, and to study their interrelationship with reference genotypes on germplasm bank. DNA samples from 120 cacao accessions, collected on 17 farms in seven counties in Southern Bahia, were amplified by RAPD technique (random amplified polymorphic DNA. The coefficients of genetic dissimilarity, calculated from the RAPD bands by Jaccard method, allowed to show by cluster analysis that most farm selections (89.2% grouped with accessions from germplasm bank considered representatives of the cacao genetic diversity (hybrids, Trinitarian, Scavina, Amazon and common cacao. The other selections were distributed in seven distinct groups. There is high genetic

  10. Fauna Triatominae do Estado de Bahia, Brasil.V - Microtriatoma pratai sp. n. Hemiptera, Reduviidae, Triatominae, Bolboderini Triatomidae fauna of the State of Bahia, Brazil. V - Microtriatoma pratai sp. n. - Hemiptera,Reduviidae, Triatominae, Bolderini

    OpenAIRE

    Ítalo A. Sherlock; Neide Guitton

    1982-01-01

    Microtriatoma pratai sp. n. de Hemíptera, Reduviidae, Triatominae, Bolboderini, é descrita no presente trabalho com base em um exemplar coletado em domicílio da cidade do Salvador, Estado da Bahia, Brasil. A espécie se distingue facilmente das outras conhecidas do gênero, principalmente por apresentar asas sem manchas e conexivo com largas manchas claras e escuras alternadas.Microtriatoma pratai n. sp. (Hemíptera, reduviidae, Triatominae, Bolboderini) is described from a single specimen colle...

  11. Diversidade genética de Chenopodium ambrosioides da região cacaueira da Bahia com base em marcadores RAPD Genetic diversity based on RAPD markers of Chenopodium ambrosioides from the cocoa region of Bahia State, Brazil

    OpenAIRE

    Simone Gualberto Santos; Ronan Xavier Corrêa

    2006-01-01

    Chenopodium ambrosioides L., conhecida no Brasil por suas propriedades medicinais e usada principalmente para o controle de verminoses intestinais, é pouco estudada quanto à diversidade genética. O objetivo deste trabalho foi avaliar a diversidade genética de 16 indivíduos de C. ambrosioides, provenientes de diferentes municípios da região cacaueira da Bahia, pela técnica de RAPD (DNA polimórfico amplificado ao acaso). Apenas 6,9% das 216 bandas RAPD amplificadas foram polimórficas e a anális...

  12. Hyphomycetes from soil of an area affected by copper mining activities in the State of Bahia, Brazil Hyphomycetes de solo de uma área de mineração de cobre no Estado da Bahia, Brasil

    OpenAIRE

    Isabella P.M. Wanderley Costa; Maria Auxiliadora de Q. Cavalcanti; Fernandes, Maria José S.; Débora M.M. Lima

    2006-01-01

    With the aim of observing the impact produced by copper-mining activities on soil fungi, samples were collected from an area at the Caraíba Mining, in the State of Bahia, Brazil. This area was divided in six sub-areas: one had native vegetation and was used as control, while the others varied according to degrees of impact. The samples, collected during the dry and the rainy seasons, were submitted to serial dilutions and placed on Petri dishes with Sabouraud medium plus antibiotic. Sixty fiv...

  13. Para além da ordem: o cotidiano prisional da Bahia oitocentista a partir da correspondência de presos Beyond order: daily prison life in Nineteenth-Century Bahia according to prisoners' correspondence

    OpenAIRE

    Cláudia Moraes Trindade

    2009-01-01

    Este artigo tem o objetivo de discutir a comunidade prisional na Bahia Oitocentista, a partir das correspondências de presos. Faço uma análise dessa documentação buscando reconstruir parte do cotidiano dos presos, pressupondo a existência de uma ordem paralela, com igual ou maior força do que a oficial, mas que não anulava a arbitrariedade e a violência desta última. Entretanto, essa ordem paralela podia ser rompida, a qualquer momento, seja por confrontos diretos entre os próprios presos ou ...

  14. Genetic Structure and Molecular Diversity of Cacao Plants Established as Local Varieties for More than Two Centuries: The Genetic History of Cacao Plantations in Bahia, Brazil

    OpenAIRE

    Santos, Elisa S. L.; Cerqueira-Silva, Carlos Bernard M.; Mori, Gustavo M.; Ahnert, Dário; Mello, Durval L. N.; Pires, José Luis; Ronan X. Corrêa; Anete P. Souza

    2015-01-01

    Bahia is the most important cacao-producing state in Brazil, which is currently the sixth-largest country worldwide to produce cacao seeds. In the eighteenth century, the Comum, Pará and Maranhão varieties of cacao were introduced into southern Bahia, and their descendants, which are called ‘Bahian cacao’ or local Bahian varieties, have been cultivated for over 200 years. Comum plants have been used to start plantations in African countries and extended as far as countries in South Asia and O...

  15. Evidências sorológicas da circulação do arbovírus Rocio (Flaviviridae) na Bahia

    OpenAIRE

    Straatmann Andréa; Santos-Torres Sandro; Vasconcelos Pedro F.C.; Travassos da Rosa Amélia P. A.; Rodrigues Sueli G.; Tavares-Neto José

    1997-01-01

    Oito casos com anticorpos anti-Rocio são descritos, de quatro cidades do Estado da Bahia, sendo seis portadores de anticorpos IgG (IH e TN) e dois IgM (ELISA e TN). Os autores comentam sobre a circulação deste arbovírus no Estado, e as possibilidades de reações cruzadas com outros vírus antigenicamente relacionados.Eight antibody anti-Rocio cases, from four distinct cities in the state of Bahia, are described; six of them being carriers of the antibody IgG (HI and NT) and two IgM (ELISA and N...

  16. Research, Monitoring, and Evaluation for the Federal Columbia River Estuary Program

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, Gary E.; Diefenderfer, Heida L.; Ebberts, Blaine D.; Tortorici, Cathy; Yerxa, Tracey; Leary, J.; Skalski, John R.

    2008-02-05

    The purpose ofthis document is to describe research, monitoring, and evaluation (RME) for the Federal Columbia River Estuary Program. The intent of this RME effort is to provide data and information to evaluate progress toward meeting program goals and objectives and support decision-making in the Estuary Program. The goal of the Estuary Program is to understand, conserve, and restore the estuary ecosystem to improve the performance of listed salmonid populations. The Estuary Program has five general objectives, designed to fulfill the program goal, as follows. 1. Understand the primary stressors affecting ecosystem controlling factors, such as ocean conditions and invasive species. 2. Conserve and restore factors controlling ecosystem structures and processes, such as hydrodynamics and water quality. 3. Increase the quantity and quality of ecosystem structures, i.e., habitats, juvenile salmonids use during migration through the estuary. 4. Maintain the food web to benefit salmonid performance. 5. Improve salmonid performance in terms of life history diversity, foraging success, growth, and survival. The goal of estuary RME is to provide pertinent and timely research and monitoring information to planners, implementers, and managers of the Estuary Program. In conclusion, the estuary RME effort is designed to meet the research and monitoring needs of the estuary Program using an adaptive management process. Estuary RME's success and usefulness will depend on the actual conduct of adaptive management, as embodied in the objectives, implrementation, data, reporting, and synthesis, evaluation, and decision-making described herein.

  17. Predicting fish community properties within estuaries: Influence of habitat type and other environmental features

    Science.gov (United States)

    França, Susana; Vasconcelos, Rita P.; Fonseca, Vanessa F.; Tanner, Susanne E.; Reis-Santos, Patrick; Costa, Maria José; Cabral, Henrique N.

    2012-07-01

    Statistical models predicting species distributions are essential not only to increase knowledge on species but for their application in conservation and ecologically-based management. The variation of fish species richness and abundance in the most representative habitats (saltmarsh, mudflat and subtidal) in five estuaries along the Portuguese coast was analysed through seasonal sampling surveys in 2009. Generalized additive models (GAM) were developed to describe the variation of species richness and abundances with a set of geomorphologic, hydrologic and environmental characteristics from the sampled estuaries and habitats. GAM were chosen as the complex interactions dominating these ecosystems and species distribution are non-linear. Final models built for each estuary and for all estuaries together performed well during the calibration phase and also during the validation phase, where an unused data sub-set from each estuary was used. There was not a similar combination of variables retained by the models for the studied estuaries but factors such as the area of the habitat, the distance to estuary mouth, percentage of mud in the sediment and depth were commonly retained. The partial effect of these predictor variables on the variation of species richness and abundance in the estuaries varied markedly and the importance of preserving the heterogeneity of habitats within estuaries was highlighted. Models for each individual estuary performed better than models for estuaries combined. Predictive models could be useful as a preliminary tool to prepare long-term conservation plans at different scales.

  18. Transformations of Mangrove Forests in Bahia Magdalena, Baja California Sur, Mexico: Two Decade Results Based on Landsat Imageries

    Science.gov (United States)

    Suresh Babu, S.; Abdul Rahaman, S.; Muthushankar, G.; Jonathan, M. P.

    2014-12-01

    Mangrove forests which thrive along the tropical and subtropical regions are the most productive ecosystems in the world with a wide range of ecological and economical services to mankind. With the rapid urbanization across the globe, these forests tend to be destroying at an alarming rate. The area of concern for this study, Bahia Magdalena is very important for the economy of the state as nearly 50% of the artisan fisheries are established in the mangrove zone. Henceforth this study is an attempt for a regional assessment and to accurately quantify the mangroves using LANDSAT imageries for over two decades in Bahia Magdalena, Baja California. Satellite imageries from the year 1986 through 2014 were analysed to assess the prolonged changes taking place in and around the mangrove reserve. Using the estimates of land use/cover for all the years, the spatio - temporal data was validated using ArcGIS software. The results revealed that the spatial extent of mangroves are decreasing until 2005 due to the developmental plans such as tourism, shrimp farming and establishment of industries in this part of the country. During the past 10 years (~ after 2005) there is no much change in the area extent of mangrove reserves due to afforestation and conservation efforts. Thus the unbiased dataset generated may be widely used for an improved understanding of the role of mangrove forests in the socio economic aspects, protection from natural disasters, identify possible areas for conservation, restoration and rehabilitation; and improve estimates of the amount of carbon stored in mangrove vegetation and the associated marine environment. Keywords: Mangroves, LANDSAT, Bahia Magdalena, México.

  19. Alcohol drinking patterns by gender, ethnicity, and social class in Bahia, Brazil Determinantes sociais e padrões de consumo de álcool na Bahia, Brasil

    Directory of Open Access Journals (Sweden)

    Naomar Almeida-Filho

    2004-02-01

    Full Text Available OBJECTIVE: To study patterns of alcohol consumption and prevalence of high-risk drinking. METHODS: A household survey was carried out in a sample of 2,302 adults in Salvador, Brazil. Cases of High-Risk Drinking (HRD were defined as those subjects who referred daily or weekly binge drinking plus episodes of drunkenness and those who reported any use of alcoholic beverages but with frequent drunkenness (at least once a week. RESULTS: Fifty-six per cent of the sample acknowledged drinking alcoholic beverages. Overall consumption was significantly related with gender (male, marital status (single, migration (non-migrant, better educated (college level, and social class (upper. No significant differences were found regarding ethnicity, except for cachaça (Brazilian sugarcane liquor and other distilled beverages. Overall 12-month prevalence of high-risk drinking was 7%, six times more prevalent among males than females (almost 13% compared to 2.4%. A positive association of HRD prevalence with education and social class was found. No overall relationship was found between ethnicity and HRD. Male gender and higher socioeconomic status were associated with increased odds of HRD. Two-way stratified analyses yielded consistent gender effects throughout all strata of independent variables. CONCLUSIONS: The findings suggest that social and cultural elements determine local patterns of alcohol-drinking behavior. Additional research on long-term and differential effects of gender, ethnicity, and social class on alcohol use and misuse is needed in order to explain their role as sources of social health inequities.OBJETIVOS: Investigar padrões de consumo de álcool e prevalência de consumo de alto risco. MÉTODOS: Inquérito domiciliar realizado no município de Salvador, Bahia, com amostra de 2.302 adultos. Casos de consumo de alto risco foram definidos como sujeitos que referiram uso diário ou semanal mais episódios de embriaguez, além daqueles que

  20. Occurrence of Prosthenorchis elegans in Free-living Primates from the Atlantic Forest of Southern Bahia, Brazil.

    Science.gov (United States)

    Catenacci, Lilian S; Colosio, Adriana C; Oliveira, Leonardo C; De Vleeschouwer, Kristel M; Munhoz, Alexandre D; Deem, Sharon L; Pinto, Jaqueline M S

    2016-04-28

    Parasite prevalence and abundance are important factors affecting species' conservation. During necropsies on a free-living golden-headed lion tamarin ( Leontopithecus chrysomelas ) and two Wied's marmosets ( Callithrix kuhlii ) in the Atlantic Forest of southern Bahia, Brazil, we collected a large number of adult intestinal parasites that we identified as Prosthenorchis elegans. This parasite is pathogenic for neotropical primates. Prosthenorchis spp. infestation is influenced by diet with increased risk of exposure from ingesting invertebrate intermediate hosts. The biological similarities and sympatric nature of these two nonhuman primates support that they may harbor similar infectious and parasitic agents. PMID:26981688