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  1. A Tradescantia como bioindicador vegetal na monitoração dos efeitos clastogênicos das radiações ionizantes Use of Tradescantia to monitor the clastogenic effects of ionizing radiation

    Directory of Open Access Journals (Sweden)

    Heloisa de Andrade Carvalho

    2005-12-01

    Full Text Available A influência de agentes químicos e físicos (em especial a radiação sobre a freqüência de mutações tem sido amplamente estudada por meio da análise de alterações observadas na Tradescantia, uma planta utilizada como bioindicador dessas alterações. A avaliação das alterações genéticas da Tradescantia pode ser feita tanto pela detecção de mutações somáticas quanto de aberrações cromossômicas induzidas por mutágenos presentes no ar, solo e água. Os resultados apresentados por diversos estudos estimulam o uso da Tradescantia na avaliação dos efeitos das radiações ionizantes. Estudos futuros de mutagenicidade e aberrações cromossômicas também podem ser feitos, por meio da comparação com os efeitos produzidos por outros tipos de radiações, avaliação do efeito da associação da radiação com drogas ou outros agentes químicos, além da biomonitoração de ambientes de alto risco.The influence of chemical and physical agents (specially radiation on the frequency of mutations has been widely studied by means of the analysis of changes observed in Tradescantia, a plant used as a bioindicator. The evaluation of these genetic changes may be performed both by detection of somatic mutations or chromosome abnormalities induced by mutagens that are present in the air, soil, or water. The results obtained from several studies support the use of Tradescantia for monitoring the effects of ionizing radiation. Studies of mutagenicity and chromosomal abnormalities may be carried out in future to compare the effects of other types of radiation, evaluation of the effects of the combined use of radiation and drugs or other chemical agents, and to monitor high risk environments.

  2. Desreguladores Endócrinos no Meio Ambiente e o Uso de Potenciais Bioindicadores

    OpenAIRE

    Joyce de Araújo Schiavini; Carlos Eduardo Cardoso; William Costa Rodrigues

    2015-01-01

    Os disruptores endócrinos são substâncias que interferem no funcionamento natural do sistema endócrino de homens e animais, estes por sua vez podem ser utilizados como bioindicadores, já que interagem direta ou indiretamente com estas substâncias. O presente trabalho apresenta o estado da arte sobre os desreguladores endócrinos no meio ambiente e o uso potencial de bioindicadores na detecção destas substâncias. A partir dos dados levantados na literatura científica, verifica-se um crescimento...

  3. Methodology for bioremediation monitoring of oil wastes contaminated soils by using vegetal bio indicators; Metodologia para monitoramento de biorremediacao de solos contaminados com residuos oleosos com bioindicadores vegetais

    Energy Technology Data Exchange (ETDEWEB)

    Nascimento Neto, Durval; Carvalho, Francisco Jose Pereira de Campos [Parana Univ., Curitiba, PR (Brazil). Curso de Pos-Graduacao em Ciencia do Solo]. E-mail: fjcampos@cce.ufpr.br

    1998-07-01

    This work studies the development of a methodology for the evaluation of the bioremediation status of oil waste contaminated soils, by using vegetal bioindicators for the bioremediation process monitoring, and evaluation of the environmental impacts on the contaminated areas.

  4. Utilização de bioindicadores na monitorização e certificação da qualidade do olival

    OpenAIRE

    SANTOS, Sónia A.P.; Patanita, Isabel; Sousa, João Paulo de; Fonseca, Felícia; Bento, Albino; Pinheiro, Lara; C. Gonçalves; Queirós, Anabela; Benhadi‐Marin, Jacinto; Guerreiro, Isabel; F. Carvalho; Ferreira, A.; De Silva, P M; Campos, M; Pereira, J. A.

    2012-01-01

    A intensificação das práticas agrícolas com recurso, na maioria das vezes, a aplicações de pesticidas e a mobilizações e fertilizações frequentes do solo, têm como consequência a degradação dos recursos naturais e a perda de biodiversidade nos agroecossistemas. Por outro lado, os efeitos destas práticas têm sido estudados nas últimas décadas ...

  5. Desreguladores Endócrinos no Meio Ambiente e o Uso de Potenciais Bioindicadores

    Directory of Open Access Journals (Sweden)

    Joyce de Araújo Schiavini

    2015-07-01

    Full Text Available Os disruptores endócrinos são substâncias que interferem no funcionamento natural do sistema endócrino de homens e animais, estes por sua vez podem ser utilizados como bioindicadores, já que interagem direta ou indiretamente com estas substâncias. O presente trabalho apresenta o estado da arte sobre os desreguladores endócrinos no meio ambiente e o uso potencial de bioindicadores na detecção destas substâncias. A partir dos dados levantados na literatura científica, verifica-se um crescimento no uso de desreguladores endócrinos ao longo do tempo e que os processos de tratamentos dos efluentes contaminados com estas substâncias são incipientes e pouco aplicáveis. Apesar da ampla utilização dos bioindicadores para detecção de substância xenobióticas verifica-se que pouco deles tem resposta direta e precisa dos disruptores endócrinos, permitindo estudos mais aprofundados para aperfeiçoar e selecionar espécies mais eficientes no processo de indicação de alterações de qualidade ambiental.

  6. Utilização de bioindicadores na avaliação de impacto e no monitoramento da contaminação de rios e córregos por agrotóxicos Use of bioindicators for assessing and monitoring pesticides contamination in streams and rivers

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    Ana Rosa Linde Arias

    2007-03-01

    Full Text Available Este artigo tem como objetivo apresentar uma análise dos principais bioindicadores utilizados para avaliação do impacto ambiental em recursos hídricos, já que a simples mensuração dos níveis de substâncias químicas presentes no ambiente não é suficiente para revelar os reais efeitos adversos da contaminação, tornando-se necessário a avaliação dos efeitos biológicos da contaminação em diversos níveis hierárquicos. Os bioindicadores foram tratados neste artigo através de dois estudos de casos que abrangem diferentes níveis; no caso 1, foram utilizados três níveis de organização: individual, celular e molecular, para detecção precoce dos efeitos reais da exposição de peixes aos poluentes ambientais em três bacias hidrográficas. A inibição da atividade da AchE em peixes possibilitou a avaliação dos efeitos dos agrotóxicos organofosforados e carbamatos, evidenciando o efeito dos cultivos agrícolas; no caso 2, apresentamos uma avaliação no nível da comunidade de macroinvertebrados, empregando o Índice Biótico Estendido. Discutimos, as vantagens e limitações na produção de dados confiáveis que possibilitem a implementação de medidas adequadas para o diagnóstico em diferentes escalas, visando a proteção e/ou recuperação dos ecossistemas.The objective of this article is to present an analysis of the main bioindicators that are currently used to assess the environmental impact of pollution in water resources. The simple quantification of chemicals in the environment is not enough to reveal the real effects of contamination on ecosystems, making necessary the assessment of the biological effects that pollution causes at different hierarchical levels. The bioindicators used in this article on two case studies comprehend different hierarchical levels: in case study 1, three organization levels were utilized: individual, cellular and molecular, to detect the early effects of exposition to environmental

  7. Utilização de bioindicadores na avaliação de impacto e no monitoramento da contaminação de rios e córregos por agrotóxicos Use of bioindicators for assessing and monitoring pesticides contamination in streams and rivers

    OpenAIRE

    Ana Rosa Linde Arias; Daniel Forsin Buss; Carla de Alburquerque; Alan Ferreira Inácio; Marina Moreira Freire; Mariana Egler; Riccardo Mugnai; Darcilio Fernandes Baptista

    2007-01-01

    Este artigo tem como objetivo apresentar uma análise dos principais bioindicadores utilizados para avaliação do impacto ambiental em recursos hídricos, já que a simples mensuração dos níveis de substâncias químicas presentes no ambiente não é suficiente para revelar os reais efeitos adversos da contaminação, tornando-se necessário a avaliação dos efeitos biológicos da contaminação em diversos níveis hierárquicos. Os bioindicadores foram tratados neste artigo através de dois estudos de casos q...

  8. Comunidades liquénicas como bioindicadores de calidad del aire del Valle de Aburrá

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    Jaramillo Ciro1 Margarita María

    2011-11-01

    Full Text Available Los líquenes han sido propuestos como bioindicadores de la calidad del aire por su alta sensibilidad a los cambios que afectan su abundancia, biomasa y vitalidad. Para evaluar las afectaciones que los líquenes manifiestan como consecuencia de la contaminación atmosférica, se seleccionaron dos áreas de muestreo en los alrededores de dos estaciones de la red de monitoreo de calidad del aire RedAire: el edificio Miguel de Aguinaga con alta contaminación y la Universidad de Medellín con baja contaminación. El monitoreo se realizó sobre las cortezas de 4 especies arbóreas como forofitos: Terminalia catappa Linneaus, Eritrina fusca Loureiro, Mangifera indica Linneaus y Fraxinus chinensis Roxb. Para los análisis se consideraron las variables cobertura liquénica por especie, vitalidad y fructificación del talo. Finalmente los datos de cobertura fueron utilizados para determinar el índice de pureza atmosférica (IPA y el factor Q. Los resultados evidenciaron que de las 8 especies de líquenes encontradas, Canoparmelia sp. y Parmotrema austrosinensis (Zahlbr Hale. son las más sensibles y apropiadas para estudios de calidad del aire en el Valle de Aburrá. Los análisis estadísticos realizados a los valores de abundancia relativa por forofito mostraron que Fraxinus chinensis Roxb es la especie vegetal portante más apropiada para estudios de líquenes bioindicadores en el Valle de Aburrá.

  9. Glicerina semipurificada vegetal e mista na alimentação de coelhos em crescimento

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    M. Retore

    2012-12-01

    Full Text Available Dois experimentos foram conduzidos com o objetivo de determinar a energia digestível da glicerina semipurificada vegetal e mista e o desempenho de coelhos em crescimento alimentados com dietas contendo os coprodutos. No ensaio de digestibilidade, foram utilizados 108 coelhos da raça Nova Zelândia Branco, com 45 dias de idade, distribuídos ao acaso em nove tratamentos (0, 4, 8, 12 e 16% de inclusão de glicerina vegetal e mista na dieta, com 12 repetições. Para o ensaio de desempenho, utilizaram-se 180 coelhos da raça Nova Zelândia Branco, dos 32 aos 70 dias de idade, distribuídos ao acaso em arranjo fatorial 2 x 4 (dois tipos de glicerina e quatro porcentagens de inclusão: 3, 6, 9 e 12% mais uma dieta referência, com 10 repetições e dois animais por unidade experimental. Glicerinas vegetal e mista apresentaram energia digestível de 4.048 e 3.697kcal/kg MS, respectivamente. Entre 32 e 50 dias de idade dos coelhos, a dieta com 12% de glicerina mista prejudicou (P0,05 entre a inclusão de glicerina vegetal na dieta e a dieta referência, porém a maior viabilidade econômica (P<0,05 foi com 12% de inclusão (R$1,89 x R$2,15, respectivamente. A glicerina vegetal pode ser incluída em até 12% da dieta e a mista, em até 9%, diminuindo o custo de produção sem afetar o desempenho animal.

  10. Oligoqueta Eisenia andrei como bioindicador de contaminação de solo por hexaclorobenzeno Eisenia andrei (Oligochaeta) as bioindicator of soil contamination by hexachlorobenzene (HCB)

    OpenAIRE

    Thaís Mitre Vampré; Raffaella Fuccillo; Mara M. de Andréa

    2010-01-01

    O hexaclorobenzeno (HCB) é um composto organoclorado de presença ubíqua no ambiente, sendo, por isso, classificado como um dos poluentes orgânicos persistentes (POP). Ele é altamente tóxico e está presente como contaminante na região da Baixada Santista (SP) há vários anos. Para avaliar o potencial de minhocas da espécie Eisenia andrei como bioindicadores de contaminação por HCB, espécimes delas foram expostos durante 14 dias a solo contendo 14C-HCB, e sua bioacumulação foi analisada. Não se ...

  11. Embutidos fortificados con proteína vegetal a base de quinua (Chenopodium quinoa Wild.

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    Priscila Maldonado

    2010-12-01

    Full Text Available Español:El objetivo de esta investigación es substituir la mayor cantidad de proteína animal, por proteína vegetal a base de quinua, sin disminuir la calidad y aceptabilidad del producto, se optó por este pseudocereal ya que posee características nutricionales muy importantes para la alimentación humana. En la actualidad el país atraviesa por una crisis en la disponibilidad de alimentos y por una dependencia crítica de materia prima importada, por lo cual necesita de alternativas propias, que fomenten el consumo de productos nativos y autóctonos. Al elaborar productos con materia prima disponible en el país logramos disminuir la dependencia externa y promover el trabajo interno y por ende contribuir a garantizar la Soberanía Alimentaria. La Soberanía Alimentaria es el derecho de los pueblos a definir sus propias políticas y estrategias sustentables de producción, distribución y consumo de alimentos que garanticen el derecho a la alimentación para toda la población, con base en la pequeña y medi

  12. Abejas silvestres (Hymenoptera: Apoidea) como bioindicadores en el neotrópico

    OpenAIRE

    Enrique Reyes-Novelo; Virginia Meléndez Ramírez; Hugo Delfín González; Ricardo Ayala

    2009-01-01

    Este trabajo es una revisión sobre el potencial de las abejas silvestres como grupo indicador en estudios de diversidad y fragmentación de hábitat. Se describen los criterios utilizados para seleccionar grupos de organismos como bioindicadores y se discute la información disponible para evaluar si las abejas pueden ser consideradas idóneas. La información disponible sugiere que las abejas silvestres cumplen con los criterios requeridos para considerarlas un grupo indicador y se recomienda su ...

  13. Bioindicadores ambientais: insetos como um instrumento desta avaliação

    OpenAIRE

    Marco Antonio de Oliveira; Cliver Fernandes Farder Gomes; Evaldo Martins Pires; Cidália Gabriela Santos Marinho; Terezinha Maria Castro Della Lucia

    2014-01-01

    Atividades agrícolas, florestais e do setor imobiliário vêm, ao longo do tempo, modificando ambientes ecologicamente estruturados. As consequências são drásticas e, por isso, faz-se necessária a busca por ferramentas e instrumentos para diagnosticar e monitorar a diversidade biológica desses locais. Os insetos têm-se destacado como potenciais organismos bioindicadores e isso se deve ao fato de apresentarem grande capacidade perceptiva, no que se refere a alterações do meio ambiente, principal...

  14. Bioindicadores zoológicos, innovación y proyección profesional

    OpenAIRE

    Redondo-Villa, Alberto

    2012-01-01

    La propuesta presenta la organización del alumnado de la asignatura Bioindicadores Zoológicos de la Licenciatura en Ciencias Ambientales como empresas para que generen ideas de negocio para el autoempleo y solucionar, además, problemas ambientales. El resultado ha sido el desarrollo de más de una veintena de proyectos empresariales, un contrato internacional y ha logrado despertar el interés de instituciones públicas como el Ministerio de Agricultura, la Junta de Casti...

  15. Specific activities of radium-226 in vegetables grown in Na Mom District, Songkhla Province

    OpenAIRE

    Angkunrat, S.; Bhongsuwan, T.; Chittrakarn, T.; Bhongsuwan, D.

    2007-01-01

    Specific activity of radium-226 in 13 types of vegetables grown in Namom district, Songkhla province, were analyzed using a low background gamma-ray spectrometer. The analyzed vegetables included Ivy Gourd, Yellow Cassia, White Popinac, Yard Long Bean, Rice, Peanut, Egg Plant, Spineless Amaranth, Swamp Cabbage, Mustart, Chinese Cabbage, Collards and Cucumbers. The control vegetables were taken from Bangklum district, 40 km south of Namom district. The samples were weighed, dried in an oven an...

  16. Utilização de bioindicadores em diferentes hidrossistemas de uma indústria de papeis reciclados em Governador Valadares - MG Use of biological indicators in different hydrosystems of an industry of recycled papers in Governador Valadares - MG

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    Ivan César de Oliveira Bastos

    2006-09-01

    Full Text Available A bacia do rio Doce, quinta maior do estado de Minas Gerais, mostra-se bastante degradada com impactos diretos na vegetação, no solo, na biodiversidade e na qualidade das águas. Sabendo-se da importância da bacia em questão, a utilização de bioindicadores aquáticos representa uma das formas mais modernas para se detectar níveis diferenciados de carga orgânica, sendo premente seu estudo e aplicação. Este trabalho propõe a utilização de organismos microscópicos como o fitoplâncton que, aliados a parâmetros físico-químicos, poderiam indicar poluição em seus diferentes níveis. A metodologia utilizada foi estabelecida conforme Sladecek (1973 e Greenberg (1992. Foram amostradas sete estações de coleta no ribeirão Capim, na área de influência de uma empresa de papéis reciclados, objetivando-se detectar possíveis impactos na cadeia trófica. As análises mostraram a ocorrência de 41 taxa, destacando-se a predominância dos gêneros Oscylatoria a Anacystis pertencentes à divisão Cyanophyta nos ambientes de maior estresse, e organismos da divisão Chlorophyta nos demais ambientes amostrados. Observou-se ainda a capacidade de adaptação de alguns gêneros, entre eles Euglena e Navicula, os quais se fizeram presentes em quase todos os ambientes amostrados.The Rio Doce’s basin, which is the fifth greatest basin of the state of Minas Gerais, Brazil, is severely degraded by the direct impacts on vegetation, soil, biodiversity, and water quality. Due to the importance of this basin, the use of aquatic bioindicators is one of the most modern methods to detect differentiated levels of organic matter, and its study and application is a relevant issue. This paper proposes the use microscopic organisms such phytoplankton, which combined with physicochemical parameters, would indicate pollution on its different levels. The applied methodology was according to Sladecek (1973 and Greenberg (1992. It was sampled seven collect stations

  17. Specific activities of radium-226 in vegetables grown in Na Mom District, Songkhla Province

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    Angkunrat, S.

    2007-09-01

    Full Text Available Specific activity of radium-226 in 13 types of vegetables grown in Namom district, Songkhla province, were analyzed using a low background gamma-ray spectrometer. The analyzed vegetables included Ivy Gourd, Yellow Cassia, White Popinac, Yard Long Bean, Rice, Peanut, Egg Plant, Spineless Amaranth, Swamp Cabbage, Mustart, Chinese Cabbage, Collards and Cucumbers. The control vegetables were taken from Bangklum district, 40 km south of Namom district. The samples were weighed, dried in an oven and finally burnt to ash in a furnace before being analyzed for a gamma ray of 186.2 keV emitted from Radium-226. The results showed that the geometrical means of specific activity of radium-226 of vegetables grown in Pijit, Namom, Klongrang and Thungkamin sub-district and over the Namom district were 1082, 1220, 1457, 1253 and 1250 mBq/kg, respectively. The highest and lowest values were 7882 and 26 mBq/kg, found in Ivy Gourd and Yard Long Bean, respectively. The high specific activities of radium-226 in vegetables were found to be distributed uniformly in the area. This probably indicated the source of radium-226 was also distributed uniformly in the shallow granitic bedrock throughout the area. We concluded that the radium-226 contents in vegetables grown in Namom district depended on the absorbability of alkaline earth metals in vegetables themselves, geographic features and radium content in natural water in the area. The estimated annual effective dose averaged over Namom district was 21 μSv. Consumption of Ivy Gourd may receive the maximum annual effective dose of 132 μSv.

  18. UTILIZAÇÃO DE BIOINDICADORES EM MONITORAMENTO DE POLUIÇÃO

    OpenAIRE

    Erica Sayuri Maki; Ricardo Shitsuka; Carlos Henriques Barroqueiro; Dorlivete Moreira Shitsuka

    2013-01-01

    A poluição atmosférica é um dos problemas ambientais da humanidade e acende a preocupação com a sustentabilidade. Esse problema tem se agravado e provocado efeitos prejudiciais ao ambiente e à saúde da população. Como a poluição não pode ser completamente eliminada é preciso que seja monitorada. Os bioindicadores estão entre os métodos de medição de qualidade ambiental. Eles podem indicar a presença de poluentes atmosféricos tais como compostos orgânicos de carbono, enxofre, halogenados, nitr...

  19. Propolis and vegetable wax in the conservation of Hass avocadoPrópolis e cera vegetal na conservação de abacate Hass

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    Ricardo de Oliveira Orsi

    2012-08-01

    Full Text Available The aim of this work was to evaluate the quality of Hass avocado submitted to application of propolis and vegetable wax. The selected fruits were submitted to the treatments (1 without wax and without propolis, (2 with vegetable wax, (3 propolis alcoholic extract 100%, (4 wax and etanol 70%, (5 propolis alcoholic extract 2% and wax, (6 propolis alcoholic extract 4% and wax, (7 propolis alcoholic extract 6% and wax, (8 propolis alcoholic extract 8% and wax, and (9 propolis alcoholic extract 10% and wax. The fruits were maintained under refrigeration (10 ± 1 ºC and 90 ± 5% relative humidity, being appraised every three days for 15 days and more 3 days of commercialization simulation at room temperature (23± 1 ºC and 18% relative humidity.The evaluation parameters were the weight loss, respiratory activity, pH, firmness, tritable acidity (AT, soluble solids (SS, and ratio. The results of weigth loss, respiratory activity and firmness were the most significant to show the difference among the treatments. ‘Hass’ avocado fruits submitted the application of propolis associated the vegetable wax present smaller weight loss, CO2 production and firmness in relation to the control fruits. The fruits of the treatment with propolis alcoholic extract 2% and wax presented the most promising results. Objetivou-se neste trabalho avaliar a aplicação de própolis e cera vegetal na qualidade pós-colheita do abacate ‘Hass’. Os frutos selecionados foram submetidos aos tratamentos (1 sem cera e sem própolis, (2 com cera vegetal, (3 extrato alcoólico de própolis 100%, (4 cera e etanol 70%, (5 extrato alcoólico de própolis 2% e cera, (6 extrato alcoólico de própolis 4% e cera, (7 extrato alcoólico de própolis 6% e cera, (8 extrato alcoólico de própolis 8% e cera e (9 extrato alcoólico de própolis 10% e cera. Os frutos foram mantidos sob refrigeração (10 ± 1 ºC e 90 ± 5% umidade relativa, sendo avaliados a cada três dias durante 15 dias

  20. Remoção de metais pesados tóxicos cádmio, chumbo e cromo em biofertilizante suíno utilizando macrófita aquática (Eichornia crassipes) como bioindicador - DOI: 10.4025/actascitechnol.v30i1.3179

    OpenAIRE

    Affonso Celso Gonçalves Júnior; Cleber Antonio Lindino; Mauricio Ferreira da Rosa; Reinaldo Bariccatti; Gilmar Divino Gomes

    2008-01-01

    Este trabalho objetivou avaliar a eficiência da macrófita aquática (Eichornia crassipes) como bioindicador e alternativa na remoção dos metais pesados tóxicos Cd, Pb e Cr em biofertilizante de origem suína. Foi utilizado o esquema fatorial 2x4, sendo os fatores representados pelas partes da planta (aérea e raiz), e pelos quatro tratamentos. Na instalação do experimento coletou-se uma alíquota da solução de cada tratamento para determinar as concentrações iniciais dos metais e, após 30 dias de...

  1. Remoção de metais pesados tóxicos cádmio, chumbo e cromo em biofertilizante suíno utilizando macrófita aquática (Eichornia crassipes) como bioindicador = Removal of toxic heavy metals cadmium, lead and chromium from swine biofertilizer, using an aquatic macrophyte (Eichornia crassipes) as a bioindicator

    OpenAIRE

    Affonso Celso Gonçalves Júnior; Cléber Antônio Lindino; Maurício Ferreira da Rosa; Reinaldo Bariccatti; Gilmar Divino Gomes

    2008-01-01

    Este trabalho objetivou avaliar a eficiência da macrófita aquática (Eichornia crassipes) como bioindicador e alternativa na remoção dos metais pesados tóxicos Cd, Pb e Cr em biofertilizante de origem suína. Foi utilizado o esquema fatorial 2x4, sendo os fatoresrepresentados pelas partes da planta (aérea e raiz), e pelos quatro tratamentos. Na instalação do experimento coletou-se uma alíquota da solução de cada tratamento para determinar as concentrações iniciais dos metais e, após 30 dias de ...

  2. Oligoqueta Eisenia andrei como bioindicador de contaminação de solo por hexaclorobenzeno Eisenia andrei (Oligochaeta as bioindicator of soil contamination by hexachlorobenzene (HCB

    Directory of Open Access Journals (Sweden)

    Thaís Mitre Vampré

    2010-02-01

    Full Text Available O hexaclorobenzeno (HCB é um composto organoclorado de presença ubíqua no ambiente, sendo, por isso, classificado como um dos poluentes orgânicos persistentes (POP. Ele é altamente tóxico e está presente como contaminante na região da Baixada Santista (SP há vários anos. Para avaliar o potencial de minhocas da espécie Eisenia andrei como bioindicadores de contaminação por HCB, espécimes delas foram expostos durante 14 dias a solo contendo 14C-HCB, e sua bioacumulação foi analisada. Não se verificou mortalidade nem aos sete nem aos 14 dias de contato com o solo tratado, indicando, portanto, que a dose usada no tratamento foi subletal e permitiu o estudo de bioindicação. Aos 14 dias do início do estudo, amostras de solo e de tecido animal foram submetidas à extração com solventes orgânicos, para determinação do conteúdo de radiocarbono, de HCB e de lipídios nos organismos. Verificou-se que a maior parte do radiocarbono proveniente do 14C-HCB permaneceu no solo na forma de resíduo extraível e só pequenas quantidades foram encontradas nos tecidos animais, nas formas de resíduos extraíveis e ligados. Por meio de cromatografia gasosa, verificou-se que apenas HCB foi detectado e, portanto, não ocorreu degradação nem no solo nem nos tecidos animais. O conteúdo de lipídios nos tecidos de minhocas foi correlacionado negativamente com a quantidade de HCB (-0,2, indicando que a presença de HCB pode ter provocado inibição na formação de lipídios. Finalmente, o fator de bioacumulação (FBA de 6,5 mostrou que o HCB é, de fato, bioacumulado em minhocas e que esses animais podem ser utilizados como bioindicadores em estudos de contaminação com esse composto.HCB (hexachlorobenzene is an environmentally ubiquitous organochlorine compound and is classified as one of the persistent organic pollutants (POP. It is highly toxic and has been found in the region "Baixada Santista" of the state of São Paulo (Brazil for a

  3. Bioindicadores ambientais: insetos como um instrumento desta avaliação

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    Marco Antonio de Oliveira

    2014-12-01

    Full Text Available Atividades agrícolas, florestais e do setor imobiliário vêm, ao longo do tempo, modificando ambientes ecologicamente estruturados. As consequências são drásticas e, por isso, faz-se necessária a busca por ferramentas e instrumentos para diagnosticar e monitorar a diversidade biológica desses locais. Os insetos têm-se destacado como potenciais organismos bioindicadores e isso se deve ao fato de apresentarem grande capacidade perceptiva, no que se refere a alterações do meio ambiente, principalmente por seu apurado sistema sensorial, que lhes permite qualificar condições ambientais em determinadas situações e, ainda, quantificar danos causados ao meio. Um dos problemas que podem ser associados a este setor é a falta de padronização e definição de protocolos de coleta e avaliação da biodiversidade, para que esses resultados possam ser analisados e extrapolados para diferentes ambientes antropizados. Neste trabalho, é contextualizada a importância da entomofauna como bioindicadora, em ecossistemas.

  4. COBERTURA VEGETAL E USO DA TERRA NA REGIÃO ARARIPE PERNAMBUCANA

    Directory of Open Access Journals (Sweden)

    Ivan Ighour Silva Sá

    2010-01-01

    Full Text Available Este estudio desarrolla los municipios de Araripina, Bodocó, Ipubi, Ouricuri y Trinidad. Estos distritos forman el eje de Araripe y se encuentran en el extremo oeste de Pernambuco. Esta región sufre intensos cambios en el paisaje mediante la eliminación de la cubierta vegetal para el uso de leña en la calcinación de la región, así como para las prácticas agrícolas tradicionales. El objetivo de este estudio es analizar la vegetación de esta región, basado en la clasifi cación no supervisada de NDVI y encuestas sobre el terreno. En la región son las caras Savana facies Estépica en sus bosques y cubierta de árboles que se encuentran en la Unidad de Paisaje Depresión país, las áreas de contacto de tipo de vegetación Savana, Savana Estépica y el bosque de hoja caduca que se encuentran en la Araripe y áreas donde estas caras están en la regeneración y en áreas de la agricultura.

  5. ¿Qué es un bioindicador? Aprendiendo a partir del ciclo de indagación guiada con macroinvertebrados bentónicos. Propuesta Metodológica

    OpenAIRE

    Morales Salinas, Nafer Edivar

    2011-01-01

    El objetivo de este trabajo fue diseñar y ejecutar una propuesta metodológica para construir el concepto de bioindicador a partir del ciclo de indagación guiada con macroinvertebrados bentónicos. La propuesta metodológica se diseñó a partir de una unidad temática, en la cual se definieron como referentes: un concepto de bioindicador, una clase de macroinvertebrados bentónicos, antecedentes del concepto de bioindicador en el currículo de la escuela y un enfoque metodológico. La propuesta...

  6. Utilización del zorro como bioindicador de la contaminación medioambiental: metales pesados

    OpenAIRE

    Quintana Díez, Germán

    2014-01-01

    En la presente memoria de doctorado se han determinado las concentraciones de Pb, Cd y Zn en muestras de diferentes órganos internos de zorros (Vulpes vulpes) procedentes de Galicia para, indirectamente, poder valorar los niveles de contaminación ambiental por estos metales pesados en la zona geográfica ocupada por los animales considerados. El empleo del zorro se basa en que se haya situado en la parte alta de la cadena trófica, siendo por tanto potencialmente un adecuado bioindicador de la ...

  7. Análisis de bioindicadores dietarios en poblaciones prehispánicas del centro de Argentina durante el holoceno

    OpenAIRE

    Fabra, Mariana; Gonzalez, Claudina Victoria

    2007-01-01

    La información arqueológica acerca de las poblaciones prehispánicas que ocuparon la región austral de las Sierras Pampeanas sugiere, desde inicios del Holoceno hasta la llegada de los españoles, la existencia de diversas estrategias de adaptación. El objetivo de este trabajo es analizar la diversidad temporal y espacial de la dieta de las poblaciones asentadas en esta región, analizando bioindicadores como caries e información isotópica -δC13 y δN15-. Como hipótesis de trabajo, es de esperar ...

  8. Bioindicadores leñosos para conocer los cambios climáticos y antrópicos en Portugal

    OpenAIRE

    Carrión Marco, Yolanda; Badal, Ernestina; Figueiral, Isabel

    2012-01-01

    Los carbones recuperados en contextos arqueológicos son bioindicadores claves para reconstruir la historia de las especies vegetales, su área de repartición espacial y cronológica. Su identificación botánica es una herramienta precisa para descifrar los cambios climáticos y las actividades humanas en el territorio, ya que las especies vegetales se pueden datar directamente por Acelerador de Espectrometría de Masas (ASM) para interpretar los cambios. En el presente trabajo revisamos los datos ...

  9. Estudi de la contaminacio atmosferica de la plana del camp de Tarragona (Catalunya) prenent els liquens com a bioindicadors

    OpenAIRE

    Giralt Esteve, Mireia

    1997-01-01

    Se evalua la contaminación atmosférica de la llanura litoral del Camp de Tarragona (Cataluña) tomando como bioindicadores los líquens epífitos del algarrobo (Ceratonia Siliqua). Se caracterizan ochenta y cinco estaciones según diversos parámetros: índice de pureza atmosférica (IPA), recubrimiento medio global (RMG) y nombres de especies. La combinación de los datos obtenidos permite dividir el área estudiada en seis zonas de isocontaminación. Por otra parte, se clasifican 15 especies de líque...

  10. Comunidades liquénicas como bioindicadores de calidad del aire del Valle de Aburrá

    OpenAIRE

    Jaramillo Ciro1 Margarita María; Botero Botero Liliana Rocío

    2011-01-01

    Los líquenes han sido propuestos como bioindicadores de la calidad del aire por su alta sensibilidad a los cambios que afectan su abundancia, biomasa y vitalidad. Para evaluar las afectaciones que los líquenes manifiestan como consecuencia de la contaminación atmosférica, se seleccionaron dos áreas de muestreo en los alrededores de dos estaciones de la red de monitoreo de calidad del aire RedAire: el edificio Miguel de Aguinaga con alta contaminación y la Universidad de Medellín con baja...

  11. Formigas como bioindicadores da qualidade do solo em sistema integrado lavoura-pecuária

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    Rafael Aparecido Crepaldi

    2014-05-01

    Full Text Available O objetivo deste trabalho foi avaliar a comunidade de formigas em sistemas envolvendo a rotação entre lavoura e pecuária, sob plantio direto, comparado a outros sistemas de manejo e com sistemas naturais da região. O estudo foi conduzido no Município de Dourados, MS, sob Argissolo Vermelho distroférrico típico, num sistema integrado lavoura-pecuária, em plantio direto, rotacionado a cada dois anos. Outros sistemas de manejo avaliados, para comparação, incluíram o sistema convencional (aração e gradagem, sistema plantio direto e pastagem cultivada continuamente com Brachiaria decumbens, além de dois fragmentos de vegetação nativa, nos biomas Cerrado e Floresta Semidecídua. A coleta de solo foi realizada no período chuvoso (safra 2009/2010, sendo as amostragens de serapilheira realizadas com a utilização de extratores do tipo mini-Winkler, seguindo o protocolo ALL (Ants of the Leaf Litter. Os resultados indicaram morfoespécies de Strumygenys sp. e Hypoponera sp. como potencial bioindicadores de qualidade do solo. O estudo demonstrou que a importância da manutenção de fragmentos florestais (Cerrado e Floresta Semidecídua e implementação de sistemas integrados, tais como lavoura-pecuária, são menos impactantes para a mesofauna de solo e contribuem para a conservação da diversidade de formigas e manutenção da qualidade do solo.

  12. Larvicultura de Rhamdia quelen (Pisces, Pimelodidae con proteína vegetal y animal, suplementadas con plancton

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    Germán Castañeda A.

    2011-12-01

    Full Text Available Objetivo. Determinar el efecto de dietas con diferentes proporciones de fuentes proteicas animales y vegetales suplementadas con plancton sobre el crecimiento y sobrevivencia en larvas de Rhamdia quelen. Materiales y métodos. Fueron formuladas dos dietas experimentales, dieta-1 con 70% de proteína de origen vegetal (torta de soya y dieta-2 con 70% de proteína proveniente de animales (corazón bovino yharina de pescado; se utilizaron cuatro protocolos de alimentación (cinco réplicas por tratamiento: dieta-1 + plancton filtrado en tamiz de 50-200 micras (T1, dieta-2 + plancton filtrado en tamiz de 50-200 micras (T2, dieta-1 (T3, dieta-2 (T4. Las larvas fueron manejadas a una densidad de 20 animales L-1 suministrando alimentohasta aparente saciedad diariamente a las 07:00, 11:00, 16:00 y 21:00 horas; la suplementación con plancton se realizó a las 11:00 y 21:00 horas. Resultados. Entre T1 y T2 no se observaron diferencias estadísticas (p>0.05 en peso final (21.89 ± 15.17mg vs 20.37 ± 10.37mg, longitud total (13.41±2.34mm vs 13.39±1.99 mm, factor de condición (K (0.80±0.13 vs 0.78±0.13 y sobrevivencia (46.6±2.68% vs36.0±7.41%; las diferencias entre T3 y T4 tampoco fueron significativas (3.35±1.40 mg vs 2.98±1.48 mg; 7.54±0.91mm vs 7.33±0.96mm; 0.75±0.13 vs 0.71±0.12; 33.6±9.07% vs 24.8±6.76%, respectivamente; hubo diferencias significativas (p<0.05 entre los grupos suplementados con plancton y los alimentados solo con ración. Conclusiones. La suplementación con plancton fue más efectiva que elofrecimiento solo de ración. La inclusión del 62.9% de torta de soya en la formulación (T1, aparentemente no afectó el crecimiento ni la sobrevivencia.

  13. Efeitos da umidade do solo e da cobertura vegetal na distribuição e abundância de Drosera montana (Droseraceae) Effects of soil humidity and vegetation cover on the distribution and abundance of Drosera montana (Droseraceae)

    OpenAIRE

    Espírito-Santo, Mário M.; Márcio S Werneck

    1999-01-01

    Este trabalho teve como objetivo comparar o padrão de distribuição, abundância e tamanho de Drosera montana em microhabitats sob diferentes condições de umidade do solo e cobertura vegetal na Serra do Cipó, MG. Foi analisado um transecto de 15x3m, no qual foram mapeados e medidos todos os indivíduos encontrados, e calculados os índices de agregação de Clark & Evans e de Hopkins. O transecto foi dividido em 45 quadrados de lm², nos quais foram coletadas amostras de solo e medidas suas percenta...

  14. Efeitos da umidade do solo e da cobertura vegetal na distribuição e abundância de Drosera montana (Droseraceae Effects of soil humidity and vegetation cover on the distribution and abundance of Drosera montana (Droseraceae

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    Mário M Espírito-Santo

    1999-12-01

    Full Text Available Este trabalho teve como objetivo comparar o padrão de distribuição, abundância e tamanho de Drosera montana em microhabitats sob diferentes condições de umidade do solo e cobertura vegetal na Serra do Cipó, MG. Foi analisado um transecto de 15x3m, no qual foram mapeados e medidos todos os indivíduos encontrados, e calculados os índices de agregação de Clark & Evans e de Hopkins. O transecto foi dividido em 45 quadrados de lm², nos quais foram coletadas amostras de solo e medidas suas percentagens de umidade. A percentagem de cobertura vegetal foi estimada pelo método de Daumbemirre para cada quadrado. D. montana apresentou padrão de distribuição agregado. A maior abundância de indivíduos ocorreu em locais de umidade e cobertura vegetal intermediárias, em um contínuo de condições ambientais variando de locais de solo seco com pouca cobertura vegetal a locais de solo muito úmido com muita cobertura. Entretanto, o tamanho de D. montana não parece ser afetado pela umidade ou cobertura vegetal, sendo provavelmente determinado pelo sucesso de captura de presas. Estes resultados sugerem que o padrão agregado observado para esta espécie está relacionado à disponibilidade de água e luz, mas seu crescimento é possivelmente influenciado pela interação entre fatores bióticos e abióticos.This study aimed at comparing the distribution, abundance and size of Drosera montana in microhabitats under different conditions of soil humidity and vegetation cover in Serra do Cipó, state of Minas Gerais. In a transect of 15x3m, all individuals of D. montana were mapped and their diameters were measured. We calculated the aggregation indexes of Clark & Evans and of Hopkins. The transect was divided into 45 quadrats of lm². Soil samples were collected in each quadrat for moisture content determination. The percentage of vegetation cover was estimated for each quadrat using the method of Daumbemirre. D. montana presented an aggregated

  15. Fruit and vegetable intake by Brazilian adults, 2003 Consumo de frutas e hortaliças na população adulta brasileira, 2003

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    Patrícia Constante Jaime

    2005-01-01

    Full Text Available This study estimated indicators of fruit and vegetable intake by Brazilian adults and examined the influence of demographic and socioeconomic variables on the consumption of these foods. We used the following indicators: daily fruit intake, daily vegetable intake, and daily consumption of five or more servings of fruits and vegetables per day. Only 41.0% of adults reported daily fruit intake, while 30.0% reported daily vegetable intake. Fruit and vegetable intake was more common in urban as compared to rural areas and increased in both genders with age, schooling, and number of household goods. We conclude that initiatives to promote fruit and vegetable consumption are necessary for the country as a whole, but special attention should be given to younger individuals, males, rural communities, and groups with less schooling and lower income.O presente estudo estimou a freqüência e a distribuição do consumo de frutas e hortaliças e analisou a influência de variáveis demográficas e sócio-econômicas na determinação do padrão de consumo desses alimentos na população adulta do Brasil. Os indicadores do consumo alimentar foram: consumo diário de frutas, de hortaliças, consumo diário de frutas e hortaliças e consumo diário de cinco ou mais porções de frutas e hortaliças. Menos da metade (41,0% dos indivíduos adultos refere o consumo diário de frutas enquanto menos de um terço (30,0% refere o consumo diário de hortaliças. O consumo de frutas e hortaliças é maior nas áreas urbanas do que nas áreas rurais e aumenta com a idade e escolaridade dos indivíduos, e com o número de bens no domicílio, em ambos os sexos. Concluímos que iniciativas de promoção do consumo de frutas e hortaliças devem atender a população como um todo, mas que especial atenção deve ser dada a indivíduos jovens, ao sexo masculino, a áreas rurais e aos estratos populacionais com insuficiente escolaridade e baixa renda.

  16. QUALIDADE DO CARVÃO VEGETAL PARA O CONSUMO DOMÉSTICO COMERCIALIZADO NA REGIÃO SERRANA SUL DE SANTA CATARINA1

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    Martha Andreia Brand

    2015-12-01

    Full Text Available Este trabalho teve como objetivo averiguar a qualidade do carvão vegetal para consumo doméstico, comercializado na região Serrana Sul de Santa Catarina. Foram coletadas 12 marcas de carvão na região da Associação dos Municípios da Região Serrana (AMURES e Curitibanos. Foram descritas e analisadas as características gerais das embalagens e determinadas as propriedades físicas e energéticas de cada uma das marcas. As propriedades analisadas foram: densidade relativa aparente, teor de umidade, poder calorífico, teor de carbono fixo, voláteis e cinzas. As marcas comercializadas na região são oriundas dos Estados de Santa Catarina, Rio Grande do Sul e Paraná. A acácia-negra e os eucaliptos são as espécies mais usadas para a produção de carvão. Não existe padronização das informações nas embalagens. O carvão vegetal apresentou densidade relativa aparente alta (0,403 g/cm3; teor de umidade alto (7,35%; poder calorífico superior médio de 6.449 kcal/kg, com muita variação entre as amostras; alto teor de voláteis e cinzas; e baixo teor de carbono fixo (32,85%, 1,96% e 65,17%, respectivamente. A produção e consumo do carvão vegetal no Planalto Sul catarinense são regionalizados, sem padronização das embalagens e com registro nos órgãos ambientais de fiscalização. A qualidade do carvão comercializado na região é baixa.

  17. Aplicação de reguladores vegetais na cultura de arroz de terras altas = Effect of vegetal regulators on sprinkler-irrigated highland rice

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    Rita de Cássia Félix Alvarez

    2007-04-01

    Full Text Available O objetivo deste trabalho foi identificar o regulador vegetal e dose mais adequada visando à redução da altura da planta e acamamento e a interferência destes nos componentes da produção e produtividade de grãos de arroz de terras altas irrigado por aspersão. Os tratamentos foram constituídos de três reguladores vegetais e quatro doses. Ocloreto de mepiquat (PIX e o etil-trinexapac (Moddus foram aplicados nas doses 0, 2000, 4000 e 8000 mg L-1 e o paclobutrazol (Paclobutrazol ou Cultar foi aplicado nas doses 0, 1000, 2000 e 4000 mg L-1, do produto comercial. Os reguladores vegetais foram aplicadosno estádio de perfilhamento, utilizando o cultivar Primavera. Constatou-se que a aplicação do etil-trinexapac reduziu a altura da planta e influenciou negativamente os componentes da produção e produtividade de grãos. Não foi identificada uma dose “ideal” que reduzisse a altura da planta e proporcionasse aumento na produtividade de grãos.The present work aims to identify the vegetal regulators and optimum dose to reduce plant height and layering and their influence on production and productivity components in sprinkler-irrigated highland rice grains. Treatments consisted of three vegetal regulators and four doses. Mepiquat chloride (Pix and ethyl-trinexapac (Moddus were applied at doses of 0, 2000, 4000 and 8000 mg L-1, while paclobutrazol (Paclobutrazol was applied at 0, 1000,2000 and 4000 mg L-1, commercial product. The vegetal regulators were applied during the profiling state, utilizing Primavera cultivar. Results showed that ethyl-trinexapac reduced the plant height and influenced negatively grain production and productivity components.No optimum dose was identified to reduce plant height and increase grain productivity.

  18. Remoção de metais pesados tóxicos cádmio, chumbo e cromo em biofertilizante suíno utilizando macrófita aquática (Eichornia crassipes como bioindicador - DOI: 10.4025/actascitechnol.v30i1.3179

    Directory of Open Access Journals (Sweden)

    Affonso Celso Gonçalves Júnior

    2008-05-01

    Full Text Available Este trabalho objetivou avaliar a eficiência da macrófita aquática (Eichornia crassipes como bioindicador e alternativa na remoção dos metais pesados tóxicos Cd, Pb e Cr em biofertilizante de origem suína. Foi utilizado o esquema fatorial 2x4, sendo os fatores representados pelas partes da planta (aérea e raiz, e pelos quatro tratamentos. Na instalação do experimento coletou-se uma alíquota da solução de cada tratamento para determinar as concentrações iniciais dos metais e, após 30 dias de cultivo, as plantas foram retiradas, coletando-se novamente uma alíquota da solução de cada tratamento. As plantas foram separadas em parte aérea e raiz, secas e trituradas. A macrófita apresentou-se eficiente na remoção dos metais pesados, observou-se que o sistema radicular da macrófita apresentou maiores concentrações de Cd, Pb e Cr. Com este trabalho, conclui-se que a macrófita aquática (Eichornia crassipes pode ser uma alternativa para o tratamento de biofertilizante e dejetos provenientes da suinocultura

  19. EFICIÊNCIA DE ESPÉCIES VEGETAIS NA PURIFICAÇÃO DE ESGOTO SANITÁRIO VEGETAL SPECIES EFFICIENCY ON WASTEWATER TREATMENT

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    Luiz Fernando Coutinho Oliveira

    2007-09-01

    Full Text Available

    O presente estudo objetivou avaliar a eficiência de substratos e de espécies vegetais no tratamento de esgoto sanitário, num sistema do tipo zona de raízes com fluxo subsuperficial descendente, após decantação. O experimento foi conduzido no campus Samambaia, da Universidade Federal de Goiás, em Goiânia, Goiás, Brasil. As espécies avaliadas foram taboa (Typha angustifolia L., lírio do brejo (Hedychium coronarium J. König, conta-de-lágrima (Coix lacryma-jobi L. e capim Angola (Urochloa mutica (Forssk. T.Q. Nguyen. O sistema mostrou-se eficiente na remoção de poluentes do esgoto, atendendo aos padrões estabelecidos pela legislação brasileira vigente, exceto para o nitrogênio amoniacal. A taboa e o lírio-do-brejo mostraram-se mais eficientes na redução da DBO, na oxigenação do substrato, na remoção do nitrogênio amoniacal e na remoção de coliformes. A taboa foi mais eficiente na remoção de fosfatos. A eficiência na remoção de coliformes atingiu níveis próximos à totalidade. Dentre os substratos avaliados, a casca de coco foi o menos eficiente na redução da DBO e da DQO e na remoção do nitrogênio amoniacal e dos coliformes.

    PALAVRAS-CHAVE: Tratamento de esgotos; alagados.

    The objective of this study was to evaluate the efficiency of substrates and vegetal species to treat sanitary wastewater, in a subsurface downward flow root zone system, after previous decantation. The experiment was carried out at Samambaia Campus, Federal University of Goiás, Goiânia, Goiás State, Brazil. The vegetal species were narrow-leaf cattail (Typha angustifolia L., white ginger (Hedychium coronarium J. König, Job's tears (Coix lacryma-jobi L., and para grass (Urochloa mutica (Forssk. T.Q. Nguyen. The system revealed to be efficient on wastewater

  20. Produção de laranja com plantas de cobertura permanente na entrelinha Orange yield in orchard floor vegetation management

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    Jonez Fidalski

    2006-06-01

    Full Text Available O objetivo deste trabalho foi avaliar as relações hídricas, os parâmetros fisiológicos e a produção de frutos da laranjeira 'Pêra' enxertada sobre o limoeiro 'Cravo', assim como a umidade do solo, em diferentes plantas de cobertura permanente na entrelinha. O experimento de campo foi implantado em 1993, em Argissolo Vermelho distrófico latossólico, no Município de Alto Paraná, noroeste do Paraná. Foram avaliados três tratamentos: gramínea (Paspalum notatum, leguminosa (Arachis pintoi e testemunha, que consistiu na dessecação da vegetação espontânea com herbicida. O delineamento experimental foi de blocos ao acaso com três repetições. De 1999 a 2003, realizaram-se avaliações da taxa de fotossíntese, condutância estomática e potencial da água das plantas, produção de frutos e umidade do solo. A manutenção da leguminosa nas entrelinhas do pomar acentua o estresse hídrico nas laranjeiras. O manejo da gramínea nas entrelinhas assegura melhores relações hídricas e metabólicas às laranjeiras. A produção de frutos da laranjeira 'Pêra' não é comprometida pelo manejo das plantas de cobertura na entrelinha do pomar.The objective of this work was to evaluate water status, physiological parameters and fruit yield of the Pear orange on Rangpur lime rootstock, as well as soil water content in different orchard floor vegetation management. Field experiment was set up in 1993, at Alto Paraná, northwest of the state of Paraná, Brazil. The soil is a Typic Paleudults. Three treatments were evaluated: bahiagrass (Paspalum notatum, legume (Arachis pintoi, and spontaneous vegetation plus herbicide. The experimental design was in random blocks with three replicates. From 1999 to 2003, the following measurements were made: photosynthesis rates, stomatal conductance, leaf water potential, fruit yield and soil water content. Legume keeping in the interrows causes higher stress to orange plants. Bahiagrass assures better water

  1. Colémbolos (Hexapoda) como bioindicadores de la calidad de suelos contaminados con hidrocarburos en el sureste de México

    OpenAIRE

    Raúl Uribe-Hernández; Carlos H. Juárez-Méndez; Montes de Oca, Marco A.; Palacios-Vargas, José G.; Leopoldo Cutz-Pool; Blanca E. Mejía-Recarmier

    2010-01-01

    Se evaluaron invertebrados del suelo, en particular los colémbolos, como bioindicadores de la calidad de suelos contaminados con hidrocarburos en el sureste de México. Se realizaron 2 muestreos en verano-otoño del 2004, en 4 parcelas de 2 hectáreas, denominadas zona 1, 2, 3 y control. De cada unidad se tomaron 8 muestras que fueron procesadas por medio del embudo de Berlese-Tullgren y 4 por el método de flotación. Para colémbolos se determinaron los siguientes índices ecológicos: abundancia, ...

  2. Moluscos gasterópodos como bioindicadores en el Archipiélago canario: de procesos naturales a causas antropogénicas

    OpenAIRE

    Ramírez Cañada, Rubén

    2010-01-01

    Se han eliminado páginas en blanco Este estudio presenta la utilización de diferentes especies de moluscos gasterópodos como bioindicadores en el Archipiélago Canario. Su principal objetivo es la obtención de una herramienta que proporcione información de manera rápida y fiable sobre la calidad del medio ambiente y sobre el estado de conservación de los ecosistemas naturales. Concretamente, se seleccionaron seis especies de moluscos gasterópodos ampliamente extendidos en la ...

  3. Determinación de la contaminación atmosférica en la ciudad de Pontevedra mediante bioindicadores liquénicos

    OpenAIRE

    González Torres, D.; López de Silanes Vázquez, Mª Eugenia; Paz Bermúdez, G.

    2006-01-01

    Con este trabajo se pretende establecer el grado de contaminación atmosférica actual de la ciudad de Pontevedra utilizando los líquenes como bioindicadores. Para ello se aplicaron la escala cualitativa propuesta para Galicia por Carballal & García- Molares (1987-88) y el Índice de Biodiversidad Liquénica (IBL) de Nimis (1999). Se comparan los resultados obtenidos con estos métodos en 2004, con los estudios realizados en 1988 en esta misma ciudad por García- Molares, mostrando en a...

  4. Disolución de sílice biogénica en sedimentos de lagos utilizados como bioindicadores de calidad del agua

    OpenAIRE

    Hermes U. Ramírez S.; Pedro F. Zárate del V.; Mario E. García G.; Odila De laTorre V.; Isabel Israde A.; Ángel R. Meulenert Peña

    2007-01-01

    El objetivo de este trabajo es mostrar que la disolución de sílice amorfa de origen biogénico (diatomeas y fitolitos) es un bioindicador de calidad del agua de lagos, validándose con la determinación de parámetros físico-químicos. La determinación de diatomeas y fitolitos se realizó sobre núcleos de sedimentos del Lago Chapala, México. Las diatomeas y fitolitos fueron separados, depositados en laminillas y observados con microscopía de luz polarizada y electrónica de barrido. En forma paralel...

  5. Mutagenic study of the diesel oil combustion through vegetal bioindicator; Estudo mutagenico da combustao de oleo diesel atraves de bioindicador vegetal

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Deuzuita dos Santos [Universidade de Sao Paulo (USP), Sao Carlos, SP (Brazil). Escola de Engenharia. Nucleo de Engenharia Termica e Fluidos (NETeF); Paula Manoel Crnkovic [Universidade de Sao Paulo (USP), Sao Carlos, SP (Brazil). Escola de Engenharia. Dept. de Engenharia Mecanica; Josmar Davilson Pagliuso [Universidade de Sao Paulo (USP), Sao Carlos, SP (Brazil). Escola de Engenharia. Dept. de Hidraulica e Saneamento]. E-mail: deuzuita@sc.usp.br

    2006-07-01

    This work evaluates the mutagenic potential of the exhaustion from a diesel engine, by using the bioassay Trad-SH, used as bioindicator of the air polluted. In the experiments, the diesel exhausted air have been diluted in order to reach the typical urban polluted atmosphere (50, 100 and 150 ppm of CO)

  6. Análise espaço-temporal da cobertura vegetal e uso da terra na Interbacia do Rio Paraguai Médio-MT, Brasil

    Directory of Open Access Journals (Sweden)

    Seyla Poliana Miranda Pessoa

    2013-02-01

    Full Text Available O objetivo deste estudo foi realizar uma análise espaço-temporal da cobertura vegetal e do uso da terra na Interbacia do Rio Paraguai Médio-MT, Brasil, pelo geoprocessamento de imagens Landsat TM, dos anos 1991, 2001 e 2011. As imagens foram georreferenciadas, classificadas e processadas no software Spring e as classes temáticas, quantificadas e editadas no software ArcGis. Foram mapeadas sete classes, sendo as mais expressivas a vegetação nativa, a pastagem e a cana-de-açúcar. Os resultados indicaram alterações em todas as classes durante os últimos 20 anos, com a diminuição de 22,89% da vegetação nativa, relacionada com o aumento de 58,42% da pastagem e 490,26% de monocultura de cana-de-açúcar. Foi verificado o conflito de uso da terra, principalmente em áreas de mata ciliar, fato que pode influenciar negativamente na conservação da interbacia e, consequentemente, do pantanal mato-grossense.

  7. Variação na cobertura vegetal nativa em São Paulo: um panorama do conhecimento atual

    Directory of Open Access Journals (Sweden)

    Juliana Sampaio Farinaci

    2012-08-01

    Full Text Available Estudos em diversos países têm evidenciado a ocorrência de transição florestal, fenômeno em que o aumento da cobertura florestal supera as perdas por desflorestamento. No Brasil, embora o desflorestamento ocorra em maior grau que a expansão das florestas, é possível que em certas regiões essa relação seja inversa. Levantamentos recentes sugerem a tendência do Estado de São Paulo em direção à transição florestal. Com os objetivos de analisar as evidências dessa transição e facilitar o uso da informação já existente, fez-se uma revisão de quatro fontes de dados sobre a variação da cobertura vegetal nativa em São Paulo (Instituto Florestal, SOS Mata Atlântica/INPE, IBGE e CATI/IEA. Os resultados indicaram que as discrepâncias entre esses levantamentos podem, ao menos em parte, ser atribuídas a diferenças metodológicas e de objetivos. Ressaltam-se seus pontos de concordância e discutem-se possibilidades de harmonização dessas informações.

  8. Análisis de bioindicadores dietarios en poblaciones prehispánicas del centro de Argentina durante el holoceno

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    Fabra, Mariana

    2007-01-01

    Full Text Available La información arqueológica acerca de las poblaciones prehispánicas que ocuparon la región austral de las Sierras Pampeanas sugiere, desde inicios del Holoceno hasta la llegada de los españoles, la existencia de diversas estrategias de adaptación. El objetivo de este trabajo es analizar la diversidad temporal y espacial de la dieta de las poblaciones asentadas en esta región, analizando bioindicadores como caries e información isotópica -δC13 y δN15-. Como hipótesis de trabajo, es de esperar cambios tanto en la frecuencia de caries como en los valores isotópicos entre poblaciones de cazadores-recolectores y aquellas que han incorporado la agricultura. El registro de caries se realizó sobre un total de 50 individuos adultos de ambos sexos, y el análisis isotópico se efectuó sobre 9 muestras de colágeno óseo, cuyos fechados radiocarbónicos las ubican desde fines del Holoceno Medio al Holoceno tardío final (4500-300 a.P.. Se aplicó el test de X² para evaluar la significación estadística de las diferencias observadas. Los resultados isotópicos y bioantropológicos serían coincidentes con información arqueológica previa, y permitirían interpretar la introducción de los cultígenos a la dieta de estas poblaciones como un proceso paulatino, que no supuso un cambio radical en la dieta de estas poblaciones.

  9. Tensão superficial estática de soluções aquosas com óleos minerais e vegetais utilizados na agricultura Surface tension of mineral oils and vegetable oils

    Directory of Open Access Journals (Sweden)

    Cristina G. de Mendonça

    2007-01-01

    Full Text Available O trabalho teve como objetivo avaliar a tensão superficial estática de soluções aquosas com formulações de óleos minerais e vegetais emulsionáveis utilizados como adjuvantes na agricultura. Os óleos minerais e vegetais, quando adicionados aos produtos fitossanitários, podem imprimir características desejáveis à calda de pulverização, como reduzir a tensão superficial em soluções aquosas, possibilitar maior contato da calda com a superfície vegetal ou reduzir o potencial de deriva durante as pulverizações. Foram testados os seguintes produtos comerciais: óleos minerais (Assist, Attach, Dytrol, Iharol, Mineral Oil, Spinner, Sunspray-E e Triona e óleos vegetais (Agrex'oil Vegetal, Crop Oil, Natur'l Óleo, Óleo Vegetal Nortox e Veget Oil, todos com registro de uso na agricultura. A tensão superficial das soluções aquosas foi avaliada em 11 concentrações para cada produto (0,025; 0,05; 0,1; 0,25; 0,5; 0,75; 1,0; 1,5; 2,0; 2,5 e 3,0% v/v. Essa propriedade dos óleos minerais e dos óleos vegetais foi estimada medindo-se a massa das gotas formadas na extremidade de uma bureta. Ao conjunto de dados obtidos para cada produto, na avaliação da tensão superficial, foram determinadas as análises de variância e de regressão, ajustando-se os dados ao Modelo de Mitscherlich. Entre os óleos minerais, destacaram-se os produtos: Assist, Dytrol, Iharol e Mineral Oil por apresentarem as menores tensões superficiais mínimas estimadas pelo Modelo, respectivamente, 29,255; 28,442; 26,097 e 28,584 mN m-1. Os óleos vegetais que apresentaram os menores valores de tensão superficial mínima estimados pelo Modelo, foram: Agrex' oil Vegetal (27,716 mN m-1, Natur'l óleo (28,216 mN m-1, Veget Oil (27,308 mN m-1 e Crop Oil (29,964 mN m-1.The aim of this work was to evaluate the surface tension of water emulsion with mineral oils and vegetable oils used as adjuvant. The mineral and vegetable oils when added to the agrochemicals can

  10. Efeito da cobertura vegetal sobre a pérola-da-terra (Hemiptera: Margarodidae) na cultura da videira = Effect of cover crops on brazilian ground pearl (Hemiptera: Margarodidae) in vineyards

    OpenAIRE

    Marcos Botton; George Wellington Bastos de Melo; Odoni Loris Pereira de Oliveira; Ismael Onzi

    2010-01-01

    O uso da cobertura vegetal em vinhedos é uma prática empregada paraminimizar a erosão e melhorar as qualidades químicas e físicas do solo. Neste trabalho, foi avaliado o efeito de coberturas vegetais sobre a população da pérola-da-terra Eurhizococcus brasiliensis (Hemiptera: Margarodidae) na cultura da videira. No primeiro experimento, o vinhedo foi mantido sem cobertura vegetal por meio da aplicação trimestral do herbicida glifosato comparado com o uso de vegetação espontânea, durante o ano,...

  11. Impactos das mudanças de cobertura vegetal nos processos de superfície na região semiárida do Brasil

    Directory of Open Access Journals (Sweden)

    Ana Paula Martins do Amaral Cunha

    2013-06-01

    Full Text Available A cobertura vegetal da superfície continental tem sido consideravelmente alterada pelas atividades humanas, principalmente através da conversão em grande escala da vegetação natural por áreas de cultivos e pastagens. Essas mudanças na cobertura da superfície podem alterar o clima regional e global por meio de processos biofísicos e biogeoquímicos. Assim, o presente trabalho avaliou como a substituição da vegetação natural da caatinga por agropecuária, bem como a degradação da caatinga, podem causar modificações nos processos de superfície na região semiárida do Nordeste do Brasil (NEB, a qual é uma das mais vulneráveis do Brasil, do ponto de vista social, à mudança de clima. Para isto, foram realizados experimentos numéricos de conversão da cobertura da superfície utilizando-se o modelo Integrated Biosphere Simulator - IBIS. Por meio da conversão da cobertura vegetal, as características morfológicas e biofísicas da vegetação foram modificadas e por isso, causaram alterações nas componentes dos balanços de energia, de água e de carbono. O balanço de energia foi mais afetado pelo aumento do albedo decorrente da alteração da vegetação caatinga para agropecuária e para caatinga degradada. Além disso, as alterações do comprimento de rugosidade e das propriedades estomáticas da vegetação corroboraram para as alterações ocorridas nas trocas turbulentas entre a superfície e a atmosfera. Com relação às componentes do balanço de carbono, durante a estação chuvosa com a conversão da caatinga natural para agropecuária, houve um aumento da assimilação de CO2 (NEE e com isso maior Produtividade Primária Líquida do ecossistema (NPP. O contrário ocorreu com a conversão para caatinga degradada, na qual a assimilação se manteve próxima de zero durante as horas do dia e NPP foi reduzida, o que pode ter ocorrido em função das alterações ocorridas no Índice de Área Foliar (IAF, tanto para a

  12. Comparison between the efficiency of two bioindicators for determining surface water quality in an urban environment = Comparação entre a eficiência de dois bioindicadores para a determinação da qualidade de águas superficiais em um ambiente urbano

    Directory of Open Access Journals (Sweden)

    Eduardo Cyrino Oliveira-Filho

    2011-07-01

    Full Text Available This study evaluated the efficiency of two bioindicators, fecal coliforms and ecotoxicity tests, set out in CONAMA Resolution 274/00 and CONAMA Resolution 357/05, in assessment of water quality. For this study, Lake Paranoá, Federal District of Brazil, was chosen, since it is a water body directly contaminated by effluents from a sewage treatment plant. Four sampling points were chosen in accordance with the map of recreational water quality published weekly by CAESB/DF, after analysis of fecal coliforms. Samples from these points were collected for 6 months and tested on Danio rerio fish (acute toxicity and on the microcrustacean Ceriodaphnia dubia (acute and chronic toxicity, besides measuring chemical and physico-chemical parameters. The data obtained show great consistency between the observed biological parameters, suggesting that in this urbanaquatic environment, under great anthropogenic pressure, the fecal coliform bioindicator seems to be more restrictive and enough to evaluate the safety of surface water. Este trabalho comparou a eficiência dos bioindicadores coliformes fecais ou termotolerantes e ensaios de ecotoxicidade, propostos pelas Resoluções Conama 274/00 e Conama 357/05, na avaliação da qualidade de água. Para a realização desse estudo foi escolhido o Lago Paranoá,Brasília, Distrito Federal, por ser um corpo hídrico impactado diretamente pelo lançamento de efluentes de uma estação de tratamento de esgotos. Foram definidos quatro pontos de acordo com o mapa de balneabilidade, publicado semanalmente pela Caesb/DF, em função do teor de coliformes termotolerantes. Amostras desses pontos colhidas durante seis meses foram testadas com o peixe Danio rerio (toxicidade aguda e o com o microcrustáceo Ceriodaphnia dubia (toxicidade aguda e crônica, além da determinação de parâmetros químicos e físico-químicos. Os resultados obtidos mostraram grande equivalência entre osparâmetros biológicos observados

  13. Efeito do Envelhecimento de Isca na Captura de Moscas (Diptera: Brachycera) em Área de Caatinga

    OpenAIRE

    Eduardo Nascimento; Bianca Ambrogi; Leandro Souto; Marcelo Vilas-Bôas; Manoel Uchôa

    2014-01-01

    Espécies de Diptera, principalmente as moscas, tem se mostrado como potenciais bioindicadores para mudanças ambientais. Para captura destes animais, há diferentes métodos, incluindo as armadilhas com atrativos alimentares. Neste estudo, para avaliar a eficiência de armadilhas na captura de moscas usando isca de melaço de cana-de-açúcar, foram avaliados os parâmetros ecológicos: abundância, riqueza e composição de espécies de moscas, comparando diferentes períodos de exposição das armadilhas e...

  14. Bioindicadores de la calidad del suelo: herramienta metodológica para la evaluación de la eficacia de un proceso fitorremediador

    Directory of Open Access Journals (Sweden)

    C. Garbisu

    2007-01-01

    Full Text Available La fitorremediación es una tecnología emergente que utiliza plantas y microorganismos asociados para descontaminar suelos, aire, sedimentos, y aguas. Esta fitotecnología se basa en la capacidad de algunas especies vegetales para tolerar, absorber, acumular y degradar compuestos contaminantes. El objetivo último de un proceso fitorremediador de suelos contaminados no debe ser solamente eliminar el contaminante sino sobre todo recuperar la calidad del suelo, entendida ésta como la capacidad de este recurso para realizar sus funciones de forma sostenible. Los indicadores biológicos de la calidad del suelo, en especial aquellos relacionados con la biomasa, actividad y biodiversidad de las comunidades microbianas, presentan un enorme potencial como herramienta monitorizadora de la eficacia de un proceso fitorremediador. Estos bioindicadores son de gran utilidad para evaluar el efecto que tienen los procesos fitoextractores de suelos contaminados con metales sobre la calidad del suelo.

  15. Nematoides: bioindicadores de sustentabilidade e mudanças edafoclimáticas

    Directory of Open Access Journals (Sweden)

    Cecília Helena Silvino Prata Ritzinger

    2010-12-01

    Full Text Available Em vista do desconhecimento da importância econômica dos fitonematoides, isoladamente, em cada cultura, esses organismos têm sido frequentemente negligenciados nos agroecossistemas, somente assumindo status de patógeno quando sua população se encontra muito elevada, com prejuízos acentuados. Contudo, somente 10% do universo de nematoides causam danos às plantas, 25% são nematoides agrupados nos níveis tróficos de fungívoros ou micófagos, bacterívoros e onívoros, de acordo com o tipo de sua alimentação. Não se conhece a relação do nível populacional do nematoide com o nível de dano nas plantas. Por esse motivo, os defensivos químicos são, em sua maioria, a opção mais usada ou a preferida pelos agricultores, para o manejo, podendo promover o desequilíbrio na comunidade, refletindo em risco ambiental. Para a avaliação de risco, proveniente de substâncias químicas, impactos sobre diferentes tipos de manejo dos solos, bem como distúrbios que eles sofrem, vários testes de toxicidade com nematoides têm sido realizados e há crescente demanda em sua utilização em países mais desenvolvidos. A análise da comunidade presente em determinado ecossistema, de acordo com os hábitos alimentares e o índice de maturidade, provou ser bom indicador a danos causados por poluentes ou distúrbios ecológicos. Nessa revisão, são apresentados dados que demonstram que esses organismos podem ser utilizados de forma satisfatória em estudos de sustentabilidade de ecossistemas, devido à sua abundância, diversidade e respostas à toxicidade e distúrbios ambientais.

  16. Análise Espacial da Produtividade de Óleo Vegetal para Produção de Biodiesel na Zona da Mata Mineira

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    Rudolph Fabiano Alves Pedroza Teixeira

    2008-01-01

    Full Text Available Since the late 1990’s vegetable oils have been conquering an increasing importance in the world.In virtue of reducing the CO2 emissions and promoting regional development, the biodieselemerges as a viable alternative. Hence this articleappraises the productivity of vegetable oil forthe production of biodiesel in the Zona da Mata Mineira over the period 2005/2006, using theexploratory spatial data analysis. In order to measure the productive potential of vegetable oil atthe regional level, one calculates the content of oil for each vegetable and these contents aresummed up to obtain the total of vegetable oil. Clusters were identified for the production ofvegetables both the high efficiency and low efficiency. The finding reveal the possibility ofgenerating jobs in most regions within Zona da MataMineira. Hence one observes the plantation ofvegetables for the production of biodiesel is highly viable in the Zona da Mata Mineira

  17. Evolução das disparidades da extração vegetal e da silvicultura na Amazônia Legal: uma aplicação da cadeia de Markov The development of differences in vegetal extraction and silviculture production in the legal amazon: an application of Markov chains

    Directory of Open Access Journals (Sweden)

    Ricardo Bruno Nascimento dos Santos

    2012-09-01

    Full Text Available O artigo analisa a convergência municipal da produtividade vegetal (extração vegetal e silvicultura na região da Amazônia Legal entre os anos de 1996 e 2006. Para analisar a convergência, optou-se pela metodologia da matriz de transição de Markov (Processo Estacionário de Primeira Ordem de Markov. Os resultados mostram a existência de 13 classes de convergência da produtividade vegetal. No longo prazo, a hipótese de convergência absoluta não se mantém, visto que 68,23% dos municípios encontram-se numa classe inferior à média municipal, 33,54% em uma classe intermediária acima da média e 13,41% em uma classe superior acima da média.This paper analyzes the convergence of the municipalities vegetable productivity in the Legal Amazon region between 1996 and 2006. The convergence analyses use the Markov transition matrix methodology (First Order Stationary Markov Process. The results show that existence of 13 classes of vegetable productivity convergence. In the long run, the hypothesis of absolute convergence is not maintained, whereas 68.23% of the municipalities are in a class lower than the municipal average, 33.54% in an intermediate class above average and 13.41% in a class higher than average.

  18. Colêmbolos (Hexapoda: Collembola como bioindicadores de qualidade do solo em áreas com Araucaria angustifolia Springtails (Hexapoda: Collembola as soil quality bioindicators in areas with Araucaria angustifolia

    Directory of Open Access Journals (Sweden)

    Dilmar Baretta

    2008-12-01

    Full Text Available Não existem informações sobre a diversidade de colêmbolos associados às florestas com Araucaria angustifolia (Bert. O. Kuntze no Brasil. Este estudo teve o objetivo de avaliar o potencial da diversidade de famílias de colêmbolos como bioindicadores da qualidade do solo e para separar diferentes áreas com araucária, utilizando atributos químicos e microbiológicos do solo como variáveis explicativas. O estudo foi realizado em quatro áreas: 1. floresta nativa com predominância de araucária (NF; 2. reflorestamento de araucária (R; 3. reflorestamento de araucária submetido a incêndio acidental (RF; e 4. pastagem natural com araucárias nativas e ocorrência de incêndio acidental (NPF. Na captura dos organismos, utilizaram-se dez armadilhas, distribuídas ao acaso em cada área, nos mesmos pontos de coleta dos atributos químicos e microbiológicos do solo. O número de colêmbolos de cada família, extraído por armadilhas (abundância, o índice de diversidade de Shannon (H e a riqueza de famílias foram submetidos à Análise de Variância (ANOVA. A abundância de cada família de Collembola foi submetida à Análise de Componentes Principais (ACP. Considerando as quatro áreas, foram identificadas oito famílias de colêmbolos (Brachystomellidae, Entomobryidae, Hypogastruridae, Isotomidae, Katiannidae, Paronellidae, Sminthuridae e Tomoceridae. A diversidade de famílias de colêmbolos foi maior nas áreas NF e R, em comparação com as áreas RF e NPF. Os atributos químicos e microbiológicos do solo foram eficientes como variáveis explicativas, pois auxiliaram na interpretação das modificações das famílias de colêmbolos. A ACP mostrou que a identificação ao nível de família de Collembola é suficiente para separar as áreas estudadas, além de indicar quais foram as famílias de colêmbolos mais associadas a cada área, o que possibilita sua utilização como bioindicadores de intervenções antrópicas, bem como da

  19. Okoljevarstvena problematika zaseznih zelenjavnih vrtov na vodovarstvenih območjih Ljubljane = Environmental protection: Private vegetable gardens on water protected areas in Ljubljana

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    Sara Strajnar

    2008-01-01

    Full Text Available The areas of allotment gardens and private vegetable gardens are two types of ‘small-scaleagriculture’ on water protected areas in Ljubljana and surroundings. From the environmentalprotection point of view, these gardens are important for the intensity of production andlarge number of gardeners. In author’s graduation thesis the gardening habits have beeninvestigated in detail. We combined data from field work with numerous measurements ofphytopharmaceutical products and nutrients in soil and vegetables.

  20. Tensão superficial estática de soluções aquosas com óleos minerais e vegetais utilizados na agricultura Surface tension of mineral oils and vegetable oils

    OpenAIRE

    Cristina G. de Mendonça; Carlos G. Raetano; Cristiane G. de Mendonça

    2007-01-01

    O trabalho teve como objetivo avaliar a tensão superficial estática de soluções aquosas com formulações de óleos minerais e vegetais emulsionáveis utilizados como adjuvantes na agricultura. Os óleos minerais e vegetais, quando adicionados aos produtos fitossanitários, podem imprimir características desejáveis à calda de pulverização, como reduzir a tensão superficial em soluções aquosas, possibilitar maior contato da calda com a superfície vegetal ou reduzir o potencial de deriva durante as p...

  1. Pterópodos tecosomados y heterópodos (Gasterópodos) como bioindicadores del evento "El Niño" 1992, en la estación fija "La Libertad", Ecuador

    OpenAIRE

    CRUZ, M.

    1996-01-01

    Acogiendo la recomendación del "Estudio Regional del fenómeno El Niño" (ERFEN), de la Comisión Permanente del Pacífico Sur (CPPS), de buscar nuevos organismos que puedan ser utilizados como bioindicadores tempranos de el fenómeno "EN", desde Junio/90 se viene estudiando quincenal y mensualmente a los Pterópodos tecosomados y Heterópodos en la estación fija "La Libertad", que está localizado 10 millas costa afuera en la Latitud 02°06'00" y Longitud 81°03'43''.

  2. Colémbolos (Hexapoda) como bioindicadores de la calidad de suelos contaminados con hidrocarburos en el sureste de México Collembola (Hexapoda) as quality bioindicators of the hydrocarburans polluted soils in Southestern Mexico

    OpenAIRE

    Raúl Uribe-Hernández; Carlos H. Juárez-Méndez; Montes de Oca, Marco A.; Palacios-Vargas, José G.; Leopoldo Cutz-Pool; Blanca E. Mejía-Recarmier

    2010-01-01

    Se evaluaron invertebrados del suelo, en particular los colémbolos, como bioindicadores de la calidad de suelos contaminados con hidrocarburos en el sureste de México. Se realizaron 2 muestreos en verano-otoño del 2004, en 4 parcelas de 2 hectáreas, denominadas zona 1, 2, 3 y control. De cada unidad se tomaron 8 muestras que fueron procesadas por medio del embudo de Berlese-Tullgren y 4 por el método de flotación. Para colémbolos se determinaron los siguientes índices ecológicos: abundancia, ...

  3. Colêmbolos (Hexapoda: Collembola) como bioindicadores de qualidade do solo em áreas com Araucaria angustifolia Springtails (Hexapoda: Collembola) as soil quality bioindicators in areas with Araucaria angustifolia

    OpenAIRE

    Dilmar Baretta; Cristina Seabra Ferreira; José Paulo Sousa; Elke Jurandy Bran Nogueira Cardoso

    2008-01-01

    Não existem informações sobre a diversidade de colêmbolos associados às florestas com Araucaria angustifolia (Bert.) O. Kuntze no Brasil. Este estudo teve o objetivo de avaliar o potencial da diversidade de famílias de colêmbolos como bioindicadores da qualidade do solo e para separar diferentes áreas com araucária, utilizando atributos químicos e microbiológicos do solo como variáveis explicativas. O estudo foi realizado em quatro áreas: 1. floresta nativa com predominância de araucária (NF)...

  4. Efeito da cobertura vegetal sobre a pérola-da-terra (Hemiptera: Margarodidae na cultura da videira = Effect of cover crops on brazilian ground pearl (Hemiptera: Margarodidae in vineyards

    Directory of Open Access Journals (Sweden)

    Marcos Botton

    2010-10-01

    Full Text Available O uso da cobertura vegetal em vinhedos é uma prática empregada paraminimizar a erosão e melhorar as qualidades químicas e físicas do solo. Neste trabalho, foi avaliado o efeito de coberturas vegetais sobre a população da pérola-da-terra Eurhizococcus brasiliensis (Hemiptera: Margarodidae na cultura da videira. No primeiro experimento, o vinhedo foi mantido sem cobertura vegetal por meio da aplicação trimestral do herbicida glifosato comparado com o uso de vegetação espontânea, durante o ano, de vegetação espontânea, no verão, e de aveia preta no inverno. No segundo experimento foi avaliado o efeito da mucuna-preta (Stizolobium aterrimum cultivada no vinhedo durante o verão comparado com a vegetação espontânea. No primeiro experimento, a população da pérolada-terra nas raízes de plantas de videira foi maior em áreas mantidas sem cobertura vegetal emostrou-se semelhante em áreas onde se manteve a vegetação espontânea, ao longo do ano, e com aveia preta no inverno e vegetação espontânea no verão. A infestação das plantas de videira em áreas onde foi empregada a mucuna-preta durante o verão foi equivalente à da vegetação espontânea. S. aterrimum foi registrada pela primeira vez como hospedeira de E. brasiliensis. The use of cover crops is an important strategy to reduce erosion and improve chemical and physical soil properties. In this work, we evaluate the effect of cover crops to reduce Brazilian ground pearl Eurhizococcus brasiliensis (Hemiptera: Margarodidae infestation in vineyards. In the first experiment, glyphosate was sprayed each three months to avoid cover crops. This treatment was compared with naturally occurring vegetation during the year and the use of Avena sativa in the winter. In a second experiment, Stizolobium aterrimum was cultivated during the summer compared with naturally occurringvegetation. Brazilian ground pearl population was higher in glyphosate sprayed areas than where cover

  5. Okoljevarstvena problematika zaseznih zelenjavnih vrtov na vodovarstvenih območjih Ljubljane = Environmental protection: Private vegetable gardens on water protected areas in Ljubljana

    OpenAIRE

    Sara Strajnar

    2008-01-01

    The areas of allotment gardens and private vegetable gardens are two types of ‘small-scaleagriculture’ on water protected areas in Ljubljana and surroundings. From the environmentalprotection point of view, these gardens are important for the intensity of production andlarge number of gardeners. In author’s graduation thesis the gardening habits have beeninvestigated in detail. We combined data from field work with numerous measurements ofphytopharmaceutical products and nutrients in soil and...

  6. Estimativa de área de vegetação secundária na Amazônia Legal Brasileira Estimation of secondary vegetation area in the Brazilian Legal Amazon

    Directory of Open Access Journals (Sweden)

    Cláudio Aparecido Almeida

    2010-01-01

    Full Text Available A vegetação secundária tem funções relevantes para os ecossistemas, tais como a fixação de carbono atmosférico, a manutenção da biodiversidade, o estabelecimento da conectividade entre remanescentes florestais, manutenção dos regime hidrológico e a recuperação da fertilidade do solo. O objetivo deste trabalho é, através de uma abordagem amostral, estimar a área ocupada por vegetação secundária na Amazônia Legal Brasileira (AML em 2006. A amostragem se baseia em uma abordagem estratificada pelo grau de desflorestamento das cenas LANDSAT-TM que recobrem a AML. Foram selecionadas 26 cenas para o ano de 2006, distribuídas em sete estratos conforme o percentual de desflorestamento, nas quais foram mapeadas as áreas de vegetação secundária a partir de técnicas de classificação de imagens. Foi desenvolvido um modelo multivariado de regressão para estimar a área de vegetação secundária utilizando como variáveis independentes a área de desflorestamento, a área de hidrografia, a estrutura agrária, e área das unidades de conservação. A análise de regressão encontrou um R2 ajustado de 0,84 , e coeficientes positivos para a proporção de hidrografia na imagem (2,055 e para a estrutura agrária (0,197, e coeficientes negativos para o grau de desflorestamento na imagem (-0,232 e para a proporção de Unidades de Conservação na imagem (-0,262. O modelo de regressão estimou uma área de 131.873 km² de vegetação secundária para o ano de 2006. Aplicando uma simulação Monte Carlo foi estimada uma incerteza de aproximadamente 12.445 km² para a área.Secondary vegetation has many relevant functions to the ecosystems such as atmospheric carbon fixation , maintenance of biodiversity, establishment of connectivity among forest remnants, maintenance of hydrological regime, and restoration of soil fertility. The objective of this work is to estimate the area occupied by secondary vegetation in the Brazilian Legal

  7. Análise espaço-temporal da cobertura vegetal e uso da terra na Interbacia do Rio Paraguai Médio-MT, Brasil Spatio-temporal analysis of vegetation cover and land use in the middle Paraguay River Interbasin-MT, Brazil

    Directory of Open Access Journals (Sweden)

    Seyla Poliana Miranda Pessoa

    2013-02-01

    Full Text Available O objetivo deste estudo foi realizar uma análise espaço-temporal da cobertura vegetal e do uso da terra na Interbacia do Rio Paraguai Médio-MT, Brasil, pelo geoprocessamento de imagens Landsat TM, dos anos 1991, 2001 e 2011. As imagens foram georreferenciadas, classificadas e processadas no software Spring e as classes temáticas, quantificadas e editadas no software ArcGis. Foram mapeadas sete classes, sendo as mais expressivas a vegetação nativa, a pastagem e a cana-de-açúcar. Os resultados indicaram alterações em todas as classes durante os últimos 20 anos, com a diminuição de 22,89% da vegetação nativa, relacionada com o aumento de 58,42% da pastagem e 490,26% de monocultura de cana-de-açúcar. Foi verificado o conflito de uso da terra, principalmente em áreas de mata ciliar, fato que pode influenciar negativamente na conservação da interbacia e, consequentemente, do pantanal mato-grossense.This study analyzed spatial and temporal land use changes in the Middle Paraguay River Interbasin-MT, Brazil using Landsat images from 1991, 2001 and 2011. Images were geo-referenced, classified and processed using Spring software, and thematic classes were edited and quantified using ArcGis software. Seven map classes were identified, and native vegetation, pasture and sugarcane were the most significant ones. The results showed changes in all classes during the past 20 years, primarily a 22.89% decrease of native vegetation, a 58.42% increase in pasture and 490.26% increase of sugarcane monoculture. We verified land use conflicts, mostly in riparian areas, which may negatively influence Interbasin and, consequently, Pantanal conservation in the State of Mato Grosso, Brazil.

  8. Organismos edáficos como bioindicadores da recuperação de solos degradados por arenização no Bioma Pampa Edaphic organisms as bioindicators of restoration of degraded soils by arenização on the Bioma Pampa

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    Ana Paula Moreira Rovedder

    2009-07-01

    Full Text Available Os organismos edáficos, por sua sensibilidade a alterações no meio, têm sido utilizados como indicadores de modificações nos níveis de qualidade do solo, as quais podem ser promovidas por degradação ou agradação. Em Alegrete, Rio Grande do Sul, foram caracterizadas populações de organismos edáficos como bioindicadores dos efeitos da degradação por arenização e da recuperação por revegetação com Lupinus albescens Hook. & Arn., fabácea natural do Bioma Pampa. Os tratamentos constituíram-se de solo com cobertura natural de Lupinus albescens (TN, área arenizada que recebeu revegetação com Lupinus albescens há um ano (T1, área arenizada que recebeu revegetação com Lupinus albescens há três anos (T3, solo arenizado (SA e campo nativo (CN. As coletas foram feitas em fevereiro e maio de 2006, com armadilhas PROVID. Foram determinados os parâmetros: abundância de organismos em nível de Ordem, riqueza de organismos e índices de diversidade e igualdade de Shannon. A arenização reduziu o desenvolvimento das populações edáficas, enquanto a estratégia de revegetação mostrou efeitos positivos na recolonização da área. O grupo Collembola destacou-se como bioindicador dos efeitos dos processos de degradação e recuperação. O índice de diversidade de Shannon não foi adequado para a avaliação dos efeitos da arenização quando analisado isoladamente.Edaphic organisms are sensible to environment alterations and have been used as indicators of soil quality changes. These modifications can be promoted by degradation or agradation events. The study area is located in Alegrete, Rio Grande do Sul. It was analyzed the role of epigeic soil fauna as bioindicator of soil degradation by arenização and its restoration by revegetation with Lupinus albescens Hook. & Arn., a native fabaceous of Bioma Pampa. The treatments were constituted of soil under natural covering with Lupinus albescens, degraded area recovered with

  9. Estudi de la contaminació atmosférica de la plana del Camp de Tarragona (Catalunya prenent els líquens com a bioindicadors

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    Giralt, Mireia

    1997-12-01

    Full Text Available [es] Se evalúa la contaminación atmosférica de la llanura litoral del Camp de Tarragona (Cataluña tomando como bioindicadores los líquenes epífitos del algarrobo (Ceratonia siliqua . Se caracterizan ochenta y cinco estaciones según diversos parámetros: índice de pureza atmosférica (IPA, recubrimiento medio global (RMG y nombre de especies. La combinación de los datos obtenidos permite dividir el área estudiada en seis zonas de isocontaminación . Por otra parte, se clasifican 15 especies de líquenes y el alga Pleurococcus en función de su resistencia a la contaminación atmosférica. [fr] La pollution atmosphérique d'une partie du littoral méditerranéen Catalan (Camp de Tarragona, Catalogne, Espagne a été estimée en utilisant les lichens épiphytes corticoles du caroubier (Ceratonia siliqua comme bioindicateurs. Quatre-vingt cinq stations on été étudiées el caractérisées par le calcul de divers paramètres. En combinant les données fournies par I'lndex de Pureté de l'Air (lPA, le recouvrement moyen global (RMG et le nombre d'espèces. l'aire étudiée est divisée en six zones d' isopollution. Par ailleurs, 15 espèces de lichens et une algue (Pleurococcus sont classées en fonction de leur résistance a la pollution atmosphérique.

  10. Teores de proteína e minerais de espécies nativas, potenciais hortaliças e frutas Protein and mineral contents of native species, potential vegetables, and fruits

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    Valdely Ferreira Kinupp

    2008-12-01

    Full Text Available A Região Metropolitana de Porto Alegre (RMPA, Rio Grande do Sul (Brasil, apresenta uma significativa riqueza de hortaliças e frutas nativas com potencial alimentício negligenciado. Além de indicativos etnológicos sobre seus usos como alimento, pouco se conhece sobre elas, principalmente sobre sua composição bromatológica. Estudos revelam que plantas alimentícias não-convencionais são mais ricas nutricionalmente do que plantas domesticadas. Com o objetivo de prospectar o potencial alimentício e contribuir com dados sobre os teores de proteína e minerais de plantas nativas na RMPA foram selecionadas 69 espécies, distribuídas em 58 gêneros e 33 famílias botânicas, totalizando 76 análises de diferentes partes comestíveis. Além do N convertido em proteína, foram analisados os teores de Ca, Mg, Mn, P, Fe, Na, K, Cu, Zn, S e B. Muitas espécies mostraram-se promissoras, com teores protéico e mineral superiores ao das espécies comerciais de usos similares. Apesar de adaptadas e abundantes na RMPA e dos conteúdos significativos de proteína e minerais, a grande maioria destas espécies permanece desconhecida ou subutilizada. Estudos e incentivos efetivos para o aproveitamento econômico de espécies negligenciadas poderiam contribuir para a conservação, a valorização das espécies autóctones e para uma dieta mais diversa e saudável do homem.The Metropolitan Region of Porto Alegre (MRPA, Rio Grande do Sul state (Brazil, presents a significant richness of native vegetables and fruits with neglected nourishing potential. Beyond the ethnological indicatives on their uses as food, little is known on these vegetables and fruits, mainly regard to the bromatological composition. Studies reveal that the unconventional food plants are nutritionally richer than domesticated plants. In the aim to evaluate the nourishing potential of the native plants in the MRPA region and to contribute with data on their protein and mineral contents

  11. Presettlement Vegetation

    Data.gov (United States)

    Minnesota Department of Natural Resources — Presettlement vegetation of Minnesota based on Marschner's original analysis of Public Land Survey notes and landscape patterns. Marschner compiled his results in...

  12. Comprimento da estaca e tipo de substrato na propagação vegetativa de atroveran Shoot cutting length and substrate types on vegetative propagation of atroveran

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    Larissa Corrêa do Bomfim Costa

    2007-08-01

    Full Text Available A propagação vegetativa de espécies medicinais vem despertando interesse das pesquisas agronômicas, uma vez que se constitui no ponto de partida e em ferramenta básica para qualquer cultivo em escala comercial. Este trabalho objetivou determinar o comprimento de estaca e o tipo de substrato mais adequados para a propagação vegetativa de atroveran. Em condições de casa de vegetação sob nebulização intermitente, foram testados dois comprimentos de estacas (10 e 20cm e três substratos (areia lavada, casca de arroz carbonizada e substrato comercial Plantmax®, em delineamento experimental em blocos casualizados, com quatro repetições e cinco estacas por parcela. Aos trinta e cinco dias, foram avaliados a porcentagem de enraizamento, o comprimento da maior raiz (cm e a biomassa seca das folhas e das raízes (mg. Os resultados indicaram que a propagação vegetativa de atroveran por meio de estaquia é viável, uma vez que o seu enraizamento médio ficou acima de 70%. As mudas de atroveran obtidas de estacas com 20cm apresentaram maior biomassa seca das folhas e das raízes, apesar de o comprimento da estaca não ter afetado a porcentagem de enraizamento e o comprimento da raiz. Os tipos de substrato não proporcionaram efeito sobre o desenvolvimento das estacas de atroveran. Recomenda-se a produção de mudas de atroveran com estacas de 20cm de comprimento, utilizando-se qualquer um dos três substratos testados.The vegetative propagation of medicinal species is in increasing agronomic interest because it is the starting point and a basic tool for any cultivation in commercial scale. The objective of this work was to determine the best shoot cutting length and the best substrate for vegetative propagation of Ocimum selloi. Cuttings were placed in greenhouse conditions under intermittent mist. Two cutting sizes (10 and 20cm and three substrate types (washed sand, carbonized rice hulls and commercial substrate Plantmax® were tested

  13. El tarwi o chocho: una de las principales fuentes de proteína vegetal de las comunidades indígenas de los Andes Centrales

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    Planchuelo, Ana M.

    2005-01-01

    Full Text Available El lupino andino (Lupinus mutabilis Sweet conocido también como tarwi o chocho, es una especie de leguminosa nativa de los Andes Centrales. Su domesticación se remonta a los principios de la cultura Nazca y desde ese entonces hasta la actualidad el cultivo está ampliamente difundido en las laderas montañosas y en los altos valles de Ecuador, Perú y Bolivia. La importancia del lupino para las comunidades andinas prehispánicas quedo documentada en pinturas de cerámicas y en tributos encontrados en tumbas de 100-150 años AC. Diversas técnicas de lavado y de mejoramiento vegetal fueron aplicadas desde la antigüedad para eliminar los alcaloides tóxicos que le confieren el sabor amargo a la planta y los granos. El tarwi, el maíz. los frijoles, los pseudocereales, quinoa y amaranto y la papa junto a otras raíces y tubérculos constituyen la comida básica de muchas culturas andinas. El objetivo de este trabajo fue determinar los componentes nutricionales de los granos del lupino andino para compararlos con los otros constituyentes de la dieta de las comunidades campesinas. Se analizaron por medio de técnicas fitoquímicas distintas variedades de tarwi. Se determinaron los contenidos de proteínas y grasas y los patrones de ácidos grasos. Los resultados muestran que la ingesta de lupinos, que provee un buen balance de proteínas y grasas en combinación con el maíz y los tubérculos, que aportan los hidratos de carbono, forman una dieta balanceada y de alto valor nutricional.

  14. Solos sob vegetação de restinga na Ilha do Cardoso (SP: II - Mineralogia das frações silte e argila Soils under restinga vegetation on the Cardoso Island (SP: II - Mineralogy of silt and clay fractions

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    Felipe Haenel Gomes

    2007-12-01

    Full Text Available A vegetação de restinga é uma formação típica que ocorre na costa brasileira em materiais de origem quartzosa e pobres em nutrientes. Os solos que ocorrem nesses ambientes são principalmente Espodossolos e Neossolos Quartzarênicos, com incipiente processo de podzolização. A podzolização é freqüentemente estudada em regiões de clima frio, sendo escassos os estudos mineralógicos de Espodossolos em clima tropical e material de origem quartzoso. Neste trabalho foram estudados solos sob vegetação de restinga na Ilha do Cardoso-SP, com o objetivo de identificar a assembléia mineralógica da fração silte e argila deles, no intuito de dar subsídios para melhor entendimento de sua gênese. Os principais minerais encontrados na fração argila foram quartzo e caulinita e, na fração silte, feldspato e quartzo. Isso indica que nesses solos a assembléia mineralógica é relativamente mais intemperizada do que os Espodossolos encontrados sob clima mais frio, e mesmo em relação a outros solos estudados no litoral brasileiro, devido ao próprio material de origem, pobre em minerais primários intemperizáveis, e à migração de complexos organometálicos insaturados, o que aumenta seu poder de dissolução. Em alguns horizontes (2Cgj foram identificadas esmectitas, as quais podem ser herdadas ou neoformadas, e sua gênese é dissociada da podzolização.Restinga is a typical vegetation on quartzitic, sandy, nutrient-poor parent materials along the Brazilian coast.. Podzolization is the main pedogenic process in restinga soils and Spodosols and Quartzipsamments with incipient podzolization are the most common soils. Podzolization is frequently studied in cold climate regions, while mineralogical studies of Spodosols in tropical climate on quartzitic parent material are scant. In this work, soils under restinga vegetation on the Ilha do Cardoso-SP, Brazil were studied to identify the mineralogical assembly of silt and clay fractions

  15. Kuchler Vegetation

    Data.gov (United States)

    California Department of Resources — Digital version of potential natural plant communites as compiled and published on 'Map of the Natural Vegetation of California' by A. W. Kuchler, 1976. Source map...

  16. Wieslander Vegetation

    Data.gov (United States)

    California Department of Resources — Digital version of the 1945 California Vegetation Type Maps by A. E. Wieslander of the U.S. Forest Service. Source scale of maps are 1:100,000. These compiled maps...

  17. Briófitos como bioindicadores de calidad botánica en zonas áridas del SE español: Sierras de Filabres, Cabrera, Alhamilla y Cabo de Gata (Almería, España)

    OpenAIRE

    Ros Ferré, Rosa María; Guerra Montes, Juan; García Zamora, Pedro

    1999-01-01

    Briófitos como bioindicadores de calidad botánica en zonas áridas del Sudeste español: Sierras de Filabres, Cabrera, Alhamilla y Cabo de Gata (Almería, España). Basado en el estudio de la flora y vegetación briofíticas de las sierras de Filabres, Cabrera, Alhamilla y Cabo de Gata, se ha realizado la evaluación fitobiológica de las mismas aplicando un coeficiente de calidad botánica a una serie de localidades elegidas en el seno de estos sistemas montañosos. De este modo se han cartografiado l...

  18. Produção de serapilheira como bioindicador de recuperação em plantio adensado de revegetação Litter deposition as bioindicator of restoration in a dense revegetation system

    OpenAIRE

    Murilo Rezende Machado; Fátima C.M. Piña Rodrigues; Marcos Gervasio Pereira

    2008-01-01

    A análise do padrão de deposição de serapilheira foi empregada como bioindicador para comparar diferentes estádios de regeneração de floresta secundária, capoeira e pasto e um modelo de plantio adensado de revegetação. Coletores de serapilheira cônicos de 0,25 m² foram utilizados, obtendo-se uma produção total de biomassa de 10,17 Mg ha-1 ano-1 para a floresta secundária similar ao terço médio da área revegetada (8,98 Mg ha-1 ano-1). Para os terços inferior (5,85 Mg ha-1 ano-1) e superior (5,...

  19. Produção de serapilheira como bioindicador de recuperação em plantio adensado de revegetação Litter deposition as bioindicator of restoration in a dense revegetation system

    Directory of Open Access Journals (Sweden)

    Murilo Rezende Machado

    2008-02-01

    Full Text Available A análise do padrão de deposição de serapilheira foi empregada como bioindicador para comparar diferentes estádios de regeneração de floresta secundária, capoeira e pasto e um modelo de plantio adensado de revegetação. Coletores de serapilheira cônicos de 0,25 m² foram utilizados, obtendo-se uma produção total de biomassa de 10,17 Mg ha-1 ano-1 para a floresta secundária similar ao terço médio da área revegetada (8,98 Mg ha-1 ano-1. Para os terços inferior (5,85 Mg ha-1 ano-1 e superior (5,81 Mg ha-1 ano-1 e capoeira (5,63 Mg ha-1 ano-1, os dados foram similares aos obtidos em florestas alteradas. Apesar da necessidade de formulação de mais variáveis comparativas, a deposição de serapilheira pode ser usada como bioindicador de recuperação ambiental.Litter deposition pattern was applied as bioindicator to compare sites at different successional stages with a dense restoration plantation. Litter traps (0.25 m² were used and a production of 10.17 Mg ha-1 year-1 was obtained for secondary forest similar to a medium sector in the restoration area (8.98 Mg ha-1 year -1. Lower (5.85 Mg ha-1 year-1, upper (5.81 Mg ha-1 year-1, and bush (5.63 Mg ha-1 year-1 land production were similar to litter deposition values obtained from disturbed forests. Despite the need of more comparative parameters, litter deposition can be applied as restoration bioindicator.

  20. Urea de lenta degradación ruminal como sustituto de proteína vegetal en dietas para rumiantes - Slow release urea as substitute for plant protein in diets for ruminants

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    Martínez Marín, Andrés L.

    2009-12-01

    Full Text Available ResumenEl objetivo del presente trabajo es revisar críticamente el interés de los nuevos productos de urea de lenta degradación ruminal en el diseño de dietas para rumiantes. Previamente, la historia del uso de los compuestos nitrogenados no proteicos en la alimentación animal y los aspectos claves del metabolismo de la urea de los rumiantes sonrepasados de manera breve. Hace más de medio siglo que se descubrióque distintos productos nitrogenados no proteicos pueden sustituir a los concentrados de proteína vegetal como fuentes de nitrógeno en lasdietas de los rumiantes gracias a los microorganismos del rumen. Estosson capaces de utilizar el nitrógeno no proteico para la síntesis deproteína microbiana cuyo elevado valor biológico permite cubrir,normalmente, la mayoría de las necesidades nitrogenadas de losrumiantes. Entre todos los productos nitrogenados no proteicos, la urea ha alcanzado preponderancia a pesar de diversos inconvenientes entre los que destaca la elevada velocidad de degradación ruminal y laconsiguiente liberación brusca de amoníaco. Aunque en las décadaspasadas se han investigado distintos productos y tratamientos pararalentizar la degradación ruminal de la urea, ninguno ha adquiridoespecial relevancia. Actualmente se comercializan nuevos productos deurea de lenta degradación ruminal cuyo mayor interés es,probablemente, la posibilidad de reemplazar eficazmente parte de laproteína vegetal en las dietas de los rumiantes sin los inconvenientespropios de la urea. Sin embargo, más investigaciones son necesarias para establecer las mejores condiciones de utilización de dichosproductos en el diseño y la formulación de dietas.SummaryIn the present work, the interest of the new available products of slow rumen degradable urea is examined. Previously, the history of the use of nonprotein nitrogen compounds in animal feeding and the key aspects of urea metabolism in the ruminants are reviewed briefly. Over half a

  1. Reforestation of riparian areas by direct seeding: the effects of sazonality, soil use, exclusion of predation, and depth on initial survival/ Semeadura direta na recomposição vegetal de áreas ciliares: efeitos da sazonalidade, uso do solo, exclusão da predação, e profundidade na sobrevivência inicial

    Directory of Open Access Journals (Sweden)

    M.M Malavasi

    2005-06-01

    Full Text Available This study reports the effects of seasonality, depth of seeding, and predation exclusion on the early survival of Peltophorum dubium (Spreng. Taub. and Enterolobium contortisiliquum (Vell. Morong. seeds used to re-vegetate riparian areas. The study used proprieties along Guavira stream, in the west Parana region. Direct seeding was performed in the second week of spring, summer, autumn, and winter. Seeds were placed at the soil surface or at 2 cm depth. Predation exclusion was accomplish by a metal cage. The spring and summer seeding had survival rates of 36.6 % and 25.5 % in areas used for grain or pasture production and only 9.73 % for areas under forest patches when seeded at 2 cm depth. In general, during all seasons germinant survival was higher in altered areas than under forest patches.O ensaio testou os efeitos da sazonalidade, uso do solo, profundidade de semeadura e exclusão da predação na sobrevivência após 90 dias da semeadura direta de canafístula (Peltophorum dubium (Spreng. Taub. e de timburi (Enterolobium contortisiliquum (Vell. Morong. em áreas de domínio ciliar alteradas antropicamente. Foram efetuadas semeaduras na primavera (setembro, e verão (dezembro de 2002, assim como no outono (março, e inverno (junho de 2003 sempre na segunda semana após o início da estação, na superfície e à profundidade de 2 cm, com e sem a exclusão da predação. O ensaio foi implantado em propriedades rurais limítrofes ao riacho Guavirá, oeste do Paraná. Quando semeadas a profundidade de 2 cm na primavera e verão, as sementes das duas espécies apresentaram sobrevivência de 36,6 % e 25,5 % para áreas com produção de grãos e pastagem, respectivamente, e de 9,73 % para áreas sob remanescentes arbóreos. A sobrevivência de germinantes após 90 dias, em áreas de domínio ciliar utilizada para produção tanto de grãos como de pasto, foi maior do que aquela sob a proteção de remanescentes arbóreos.

  2. Gasterópodos planctónicos (Pterópodos y Heterópodos) como bioindicadores de los eventos "El Niño" 1992 y 1997 - 1998 en la estación fija "La Libertad", Ecuador

    OpenAIRE

    CRUZ, M.

    1998-01-01

    Con este aporte al mejor conocimiento de los Pterópodos y Heterópodos, el INOCAR cumple con una recomendación de la Comisión Permanente del Pacífico Sur (CPPS) de estudiar los organismos bioindicadores con la finalidad de encontrar en un futuro, especies que se puedan utilizar como Biondicadores tempranos del Evento "El Niño".

  3. Impacto da queima nos atributos químicos e na composição química da matéria orgânica do solo e na vegetação Impact of burning on soil chemical attributes and organic matter composition and on vegetation

    Directory of Open Access Journals (Sweden)

    Deborah Pinheiro Dick

    2008-05-01

    Full Text Available O objetivo deste trabalho foi avaliar o efeito residual de queimadas periódicas nos atributos químicos, teor e composição da matéria orgânica de um Latossolo Vermelho e na composição química da vegetação predominante. Os ambientes estudados foram: campo nativo pastejado, sem queima e sem roçada (PN; campo nativo queimado e pastejado (PQ; e mata nativa adjacente à pastagem (MN. As amostras de solo foram coletadas nas camadas 0-5, 0-20, 20-40 e 40-60 cm, para determinação dos atributos de fertilidade, teores de carbono e nitrogênio, e realização das análises de espectroscopia de infravermelho com transformada de Fourier (FTIR. A parte aérea da vegetação desses ambientes foi analisada por análise elementar e FTIR. A queima da pastagem reduziu os teores de N, Mg e K e aumentou a saturação por Al no solo, em comparação ao PN. No solo sob mata, os teores dos nutrientes foram menores, e os de C e N e a saturação por Al mais elevados do que em PN. A aromaticidade da matéria orgânica do solo não diferiu entre os três ambientes estudados e aumentou em profundidade. Na vegetação da pastagem queimada, observou-se menor teor de N e maior proporção de grupos silicatados, em comparação ao PN. A vegetação de mata apresentou maior quantidade de grupamentos nitrogenados e aromáticos do que a de PN e PQ.The objective of this study was to evaluate the residual effect of periodic burning on soil chemical attributes, composition of soil organic matter, and on vegetation of a Hapludox. Samples from three environments were studied: native pasture under grazing, without burning and shortening (NP; native pasture under grazing and burning (BP; and native forest (NF adjacent to the pasture area. Soil samples were collected in four layers: 0-5, 0-20, 20-40 and 40-60 cm, in which fertility attributes and contents of C and N were determined, and analyses of Fourier transform infrared spectroscopy (FTIR were performed. Samples from

  4. VEGETATION MAPPING IN WETLANDS

    Directory of Open Access Journals (Sweden)

    F. PEDROTTI

    2004-01-01

    Full Text Available The current work examines the main aspects of wetland vegetation mapping, which can be summarized as analysis of the ecological-vegetational (ecotone gradients; vegetation complexes; relationships between vegetation distribution and geomorphology; vegetation of the hydrographic basin lo which the wetland in question belongs; vegetation monitoring with help of four vegetation maps: phytosociological map of the real and potential vegetation, map of vegetation dynamical tendencies, map of vegetation series.

  5. Cu e Zn na cultura do sorgo cultivado em três classes de solos: I. Crescimento vegetativo e produção Cu and Zn in sorghum cultivated in three soil classes: I. Vegetative growth and yield

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    Hemmannuella C. Santos

    2009-04-01

    Full Text Available Os micronutrientes Cu e Zn são importantes para o bom desenvolvimento vegetativo e para a formação de grãos em cereais. Com o objetivo de avaliar o efeito da aplicação de Cu e Zn nos atributos de crescimento e na produção da cultura do sorgo realizou-se um experimento em ambiente protegido, no qual o delineamento foi em blocos casualizados, com a combinação de cinco doses de cobre (0, 0,26, 0,90, 1,54 e 1,80 mg kg-1 e cinco doses de zinco (0, 0,32, 1,1, 1,88 e 2,2 mg kg-1, combinadas na matriz Composto Central de Box, perfazendo 9 tratamentos, que foram aplicados em três classes de solo (Latossolo, Luvissolo e Neossolo, com 3 repetições. Avaliaram-se, aos 96 dias após a semeadura, os atributos de crescimento e a produção da cultura. A aplicação de cobre resultou em incrementos na área foliar, diâmetro do colmo, comprimento e diâmetro da panícula, matéria seca e na produção, o mesmo não ocorrendo para o zinco. As concentrações foliares de zinco indicaram interação negativa entre as doses aplicadas, enquanto entre os solos o Luvissolo foi o mais responsivo à aplicação dos nutrientes.The micronutrients copper and zinc are important for good vegetative growth and for grain formation in cereals. An experiment was carried out aiming to evaluate the effect of copper and zinc application upon growth attributes of sorghum and upon its grain yield. A randomized block experimental design was used, with a combination of five doses of copper (0, 0.26, 0.90, 1.54 and 1.80 mg kg-1 and five doses of zinc (0, 0.32, 1.1, 1.88 and 2.2 mg kg-1 combined by Box Central Composite design, resulting in nine treatments which were applied in three soil classes (Latosol, Alfisol and Entisol, with three replications. Ninety six days after sowing, growth attributes and sorghum yield were determined. The copper application increased leaf area, stem diameter, panicle length and diameter, dry matter yield and grain yield, however the same

  6. Caracterização da fauna edáfica em diferentes coberturas vegetais na região norte Fluminense Characterization of soil fauna in different vegetation covers in the northern Fluminense region (RJ

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    Maria Kellen da S. Moço

    2005-07-01

    Full Text Available O sistema solo-serapilheira é o habitat natural para grande variedade de organismos, que diferem em tamanho e metabolismo, responsáveis por inúmeras funções. O monitoramento dos grupos de fauna no sistema solo-serapilheira permite não só uma inferência sobre a funcionalidade destes organismos, mas também uma indicação simples da complexidade ecológica dessas comunidades. O presente trabalho teve como objetivo caracterizar a distribuição da fauna edáfica nos compartimentos solo e serapilheira em duas épocas do ano e em cinco diferentes coberturas vegetais (eucalipto, floresta não preservada, floresta preservada, capoeira, pasto no Norte Fluminense. As coberturas de floresta natural, especialmente das florestas preservadas e não preservadas, mostraram, de maneira geral, valores de densidade e riqueza de fauna superiores aos de eucalipto e pasto, tanto no solo quanto na serapilheira, nas duas épocas de coleta. Em geral, não houve preferência dos grupos de fauna pelos compartimentos solo e serapilheira. A densidade de fauna, riqueza de espécies, índice de Shannon e índice de Pielou também variaram conforme a época de coleta, sendo, no verão, estabelecidas maiores diferenças entre as diferentes coberturas vegetais estudadas do que no inverno. O índice de Pielou foi a variável mais estável e, portanto, mais apropriada para o estudo da dissimilaridade entre as coberturas vegetais em termos de distribuição dos grupos de fauna.The soil-litter system is a natural habitat for a great variety of organisms that differ in size and metabolism and are responsible for numerous functions. The study of groups of organism in the soil-litter system allows not only to make inferences on the functionality of these organisms, but also is a simple indication of the ecological complexity in these communities. Our study aimed at characterizing the distribution of groups of organism in soil and litter compartments in two seasons of the year

  7. Riparian vegetation affected by bank erosion in the Lower São Francisco River, Northeastern Brazil Vegetação ciliar afetada pela erosão na margem do baixo São Francisco, Nordeste do Brasil

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    Francisco Sandro Rodrigues Holanda

    2005-04-01

    Full Text Available Changes in the hydrological regime of the Lower São Francisco River, located in Northeastern Brazil have brought negative environmental impacts, jeopardizing the flora and fauna of a global biodiversity hotspot, due to implementation of hydroelectric power dams and surface water withdrawal for irrigation in public and private perimeters. Remnants of the riparian stratum associated to the riverbank destabilization in six fragments were studied by surveying trees, shrubs, herbs, and aquatic species. The calculation of the Factor of Safety (FS was performed in order to understand the riverbank's stability related to soil texture and vegetation cover. An overall number of 51 botanic families distributed in 71 genera and 79 species were recorded, predominantly from the families Mimosaceae, Myrtaceae, and Fabaceae. The fragmented riparian vegetation is mostly covered by secondary species under a strong anthropogenic impact such as deforestation, mining and irrigation, with an advanced erosion process in the river margins. Strong species that withstand the waves present in the river flow are needed to reduce the constant landslides that are mainly responsible for the river sedimentation and loss of productive lands. A lack of preservation attitude among the local landholders was identified, and constitutes a continuing threat to the riparian ecosystem biodiversity.Mudanças no regime hidrológico no baixo curso do rio São Francisco, localizado na Região Nordeste do Brasil, trouxeram impactos negativos, como a ameaça à fauna e à flora em um dos 25 "hotspots" do mundo para a conservação da biodiversidade, em razão da construção de usinas hidroelétricas e retiradas de água para irrigação em perímetros de irrigação públicos e privados. Foram estudados remanescentes da vegetação ciliar associados com a desestabilização dos barrancos do rio, em seis fragmentos de mata, por meio de levantamento florístico e histórico de degrada

  8. Enhanced Vegetation Index (EVI na análise da dinâmica da vegetação da reserva biológica de Sooretama, ES Use of Enhanced Vegetation Index (EVI in the analysis os vegetation dynamics of the Sooretama biological reservation, ES

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    André Quintão de Almeida

    2008-12-01

    Full Text Available Técnicas de análises de séries temporais são utilizadas para caracterizar o comportamento de fenômenos naturais no domínio do tempo. Neste artigo, segundo a metodologia proposta por Box et al. (1994, 125 observações do Enhanced Vegetation Index (EVI foram analisadas. Os valores modelados correspondem às variações temporais ocorridas no dossel florestal da reserva biológica de Sooretama, localizada ao Norte do Estado do Espírito Santo, no Município de Linhares. Os resultados indicaram que a metodologia foi adequada. Os resíduos do modelo ajustado são não correlacionados com distribuição normal, média zero e variância s². Com o menor valor do Critério de Informação de Akaike (AIC -570,51, o modelo ajustado foi o Sazonal Auto-Regressivo Integrado de Médias Móveis (1,0,1(1,0,112.Temporal series analysis techniques are used to characterize the behavior of natural phenomenon in time domain. In this paper, 125 Enhanced Vegetation Index (EVI observations were analyzed according to the methodology proposed by Box et al.(1994. The values modeled correspond to the temporal variations that occurred in the forest canopy of the Sooretama Biological Reserve, in northern Espírito Santo, in the district of Linhares. The results indicated that such methodology was adequate. The residues of the adjusted model are not correlated with normal distribution, zero average and s² variance. At the lowest value of the Akaike Information Criteria (AIC -570. 51, the model adjusted was the Mobile Average Integrated Self-Regressive Seasonal model (1, 0, 1 (1, 0, 1-12.

  9. Índice de vegetação do sensor MODIS na estimativa da produtividade agrícola da cana-de-açúcar Vegetation index from MODIS sensor to estimate sugarcane yield

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    Michelle Cristina Araujo Picoli

    2009-09-01

    Full Text Available A participação da cultura da cana-de-açúcar no fornecimento de matéria prima para produção de açúcar e também de álcool, como fonte alternativa de energia, tem sido relevante para o crescimento econômico do Brasil. Consequentemente, a disponibilidade de informações precisas sobre a produção agrícola dessa cultura é importante para auxiliar no planejamento e na tomada de decisões em toda a cadeia produtiva. O presente trabalho teve como objetivo estimar a produtividade agrícola de talhões de cana-de-açúcar para as safras 2004/2005 e 2005/2006, a partir de um modelo agronômico ajustado com dados orbitais. A inovação deste modelo consiste no uso do índice de área foliar (IAF estimado a partir do produto índice de vegetação NDVI (Normalized Difference Vegetation Index do sensor MODIS (Moderate Resolution Imaging Spectroradiometer a bordo do satélite Terra da NASA (National Aeronautics Space Administration. O modelo agronômico explicou 31% e 25% da variação da produtividade observada entre talhões nos anos safra 2004/2005 e 2005/2006, respectivamente, o que se deve fundamentalmente ao uso das imagens NDVI do MODIS. O resultado do modelo pode ser usado para auxiliar e aprimorar a previsão da estimativa da produtividade feita in loco.The contribution of sugarcane crop to provide raw material to produce sugar and also alcohol as an alternative energy source has been relevant to the economic growth of Brazil. Therefore, the availability of precise agricultural production information about this crop is important for planning and decision-making in the entire productive chain. The present work has the objective to estimate sugarcane yield in crop fields during the crop years 2004/2005 and 2005/2006, based on an agronomic model fit with orbital data. The innovation of this model consists in the use of the leaf area index (LAI estimated from the NDVI (Normalized Difference Vegetation Index produced by the MODIS sensor

  10. Vegetation Map and Vegetation Monographs of China

    Institute of Scientific and Technical Information of China (English)

    GUO Ke

    2010-01-01

    @@ Vegetation Map of China As the most significant component of an ecosystem,vegetation plays the most important role in maintaining biodiversity and providing the necessary resources for human beings.A vegetation map shows the major vegetation types of a region and their geographic distribution patterns.

  11. Identification of Forest Vegetation Using Vegetation Indices

    Institute of Scientific and Technical Information of China (English)

    Yuan Jinguo; Wang Wei

    2004-01-01

    Spectral feature of forest vegetation with remote sensing techniques is the research topic all over the world, because forest plays an important role in human beings' living environment. Research on vegetation classification with vegetation index is still very little recently. This paper proposes a method of identifying forest types based on vegetation indices,because the contrast of absorbing red waveband with reflecting near-infrared waveband strongly for different vegetation types is recognized as the theoretic basis of vegetation analysis with remote sensing. Vegetation index is highly related to leaf area index, absorbed photosynthetically active radiation and vegetation cover. Vegetation index reflects photosynthesis intensity of plants and manifests different forest types. According to reflectance data of forest canopy and soil line equation NIR=1.506R+0.0076 in Jingyuetan, Changchun of China, many vegetation indices are calculated and analyzed. The result shows that the relationships between vegetation indices and forest types are that perpendicular vegetation index (PVI) identifies broadleaf forest and coniferous forest the most easily;the next is transformed soil-adjusted vegetation index(TSVI) and modified soil-adjusted vegetation index(MSVI), but their calculation is complex. Ratio vegetation index (RVT) values of different coniferous forest vary obviously, so RVI can classify conifers.Therefore, the combination of PVI and RVI is evaluated to classify different vegetation types.

  12. Controle de plantas daninhas na cultura do algodoeiro (Gossypium hirsutum L. em solo anteriormente ocupado por vegetação de Cerrado Weed control on the cotton crop (Gossypium hirsutum L. in a soil previously occuped by Cerrado vegetation

    Directory of Open Access Journals (Sweden)

    J.G. Machado Neto

    1991-01-01

    Full Text Available Estudou-se os efeitos de herbicidas, isolados ou combinados, na cultura do algodão (Gossypium hirsutum L. e eficiência no controle das plantas daninhas. O experimento foi conduzido na Fazenda de Ensino e Pesquisa da Faculdade de Engenharia de Ilha Solteira - UNESP em solo Latossolo Vermelho Escuro franco argilo-arenoso, localizada no município de Selvíria, Estado de Mato Grosso do Sul, Brasil. Os tratamentos testados com as doses em kg i.a/ha foram: alachlor a 2,15 e 2,58 em pré-emergência (pré, trifluralina a 0,96 em pré-plantio incorporado ao solo (ppi isolada ou combinada com MSMA a 1,89, ou bentazon a 0,72 ou diuron a 1,20 em pós-emergência (pós em jato dirigido, MSMA a 2,52 em pós, linuron a 1,0 em pré diuron a 1,6 em pré ou pós e testemunhas com e sem capina. O delineamento experimental utilizado foi o de blocos ao acaso com doze tratamentos e quatro repetições. As aplicações em ppi e a semeadura foram realizadas dia 11. 12.81 e as em pré dia 18.12.81, com um pulverizador costal de pressão constante (CO2 de 30 1b/pol2, com barra de quatro bicos tipo leque Albuz verde e consumo de calda de 250 l/ha. As aplicações em pós foram realizadas. no dia 27.12.81, com o mesmo pulverizador com um bico tipo defletor, polijet azul, com protetor de jato, com pressão de 40 1b/pol2 e consumo de 500 I/ha. As espécies dominantes foram capim - colchão (Digitaria sangnalis (L. Scop e caruru (Amaranthus viridis L. que foram excelentemente controladas, até 90 dias após a semeadura, por alachlor, diuron em pré, trifluralina + diuron, que reduziram mais de 80% do peso da biomassa seca da parte aérea destas. Os herbicidas não causaram fitotoxicidade à cultura. A presença das plantas daninhas reduziu em 58,9% a produção de algodão em caroço.It was conduced field trial with the objective to study the effects of herbicides, isolated or combined, in cotton crop (Gossypium hirsutum L. and weeds control, in a soil previously occuped

  13. Influência da cobertura vegetal do solo na qualidade dos frutos de videira 'Niagara Rosada' Influence of soil cover with grass and leguminous plants on fruit characteristics of table grape variety Niagara Rosada

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    Elaine Bahia Wutke

    2005-12-01

    Full Text Available Devido ao aumento no custo de produção com a utilização de cobertura morta com capim nas ruas da videira 'Niagara Rosada' e à dificuldade para sua aquisição, objetivou-se a possibilidade de substituí-la por plantas de cobertura intercalares. Em experimentos realizados em Indaiatuba e Jundiaí-SP, de 1999-2000 a 2003-2004, instalaram-se seis tratamentos nas entrelinhas, em blocos ao acaso e quatro repetições, constando de área no limpo; vegetação espontânea roçada; cobertura com capim seco de Brachiaria decumbens; cobertura verde de aveia preta (Avena strigosa; cobertura verde de chícharo (Lathyrus sativus; cobertura verde de tremoço (Lupinus albus, de março a outubro, seguidas de cobertura verde de mucuna anã (Mucuna deeringiana de outubro a março. Determinaram-se massa, comprimento e largura do cacho, engaço e bagas, número total de bagas por cacho e diâmetro do pedicelo de bagas, comparando-se os valores médios pelo teste de Duncan ao nível de 5%. Na média dos anos, os resultados com a cobertura verde foram similares ou mais favoráveis que os da cobertura com braquiária seca, podendo-se substituí-la por coberturas vegetais intercalares com gramínea e leguminosas, o ano todo, sem interferência negativa na qualidade comercial dos frutos.Grape vineyard in Southern Brazil utilize a large amount of mulch during autumn-winter season demanding extra efforts and costs, being its acquisition very difficult nowadays. In order to evaluate the possibility of replacing the tradicionally mulch by green cover species in the inter-row strip, two experiments were carried out in Indaiatuba and Jundiaí, SP, Brazil, from 1999/00 to 2003/04, with the table variety Niagara Rosada. The experimental design was a randomized block with four replications and six treatments: 1 no weeded area; 2 cut spontaneous local vegetation; 3 mulch of Brachiaria decumbens; 4 green cover of Avena strigosa from March to October followed by green cover of

  14. Vegetation development on extensive vegetated green roofs

    OpenAIRE

    Emilsson, Tobias

    2008-01-01

    Technology for establishment of vegetated roofs (green roofs) has developed rapidly over recent years but knowledge about how these systems will develop over time is still limited. This study investigates vegetation development on unfertilised thin extensive vegetated roofs during a 3-year period. The vegetation systems investigated were designed to be low maintenance and had a saturated weight of 50 kg/m2, a thickness of 4 cm and drought-resistant succulent and bryophyte vegetation. Vegetati...

  15. Flora e vegetação do Brasil na Carta de Caminha The flora and the vegetation of Brazil in Caminha's letter, written in 1500, to the Portuguese king D. Manoel I

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    Tarciso S. Filgueiras

    2002-09-01

    Primeira Missa no Brasil, como retratado na célebre pintura de Victor Meirelles. O texto afirma que a cruz foi "chantada" por ocasião da Segunda Missa.An analysis of the terms related to plants and vegetation types found in the letter by Pero Vaz de Caminha (scriber of the expedition to D. Manoel I, king of Portugal ("Carta a El Rei D. Manoel is presented. The letter, written in 1500, is an account of the voyage of the Portuguese navigator Pedro Álvares Cabral during which a new land ("Terra da Vera Cruz", now Brazil was discovered. Because of its tremendous historical importance to Brazil, the Carta has been considered the birth certificate of the country. Each line of the text was numbered (from 1 to 1013, then each line was carefully examined for words that refer directly or indirectly to plants or plant associations. 118 such references were found, 77 of which are repeated two to 22 times. When the repetitions were subtracted, 45 botanical terms resulted, 31 direct references (ex.: "herbs," "fire wood" and 14 indirect (ex.: "bow", "arrow". Two terms refer to vegetation types and 43 to plants or plant parts. Five direct references refer to introduced species (ex.: rice, figs, the remaining 24 refer to native species. These were divided into four categories: 1. Terms not referable to any specific botanical name (ex.: seed, fruits 2. Terms referable to plant families (ex.: palms, cane; families Arecaceae and Poaceae, respectively; terms referable to plant genera (ex. "ervas compridas (Sargassum, "fetos" (Alsophilla; terms referable to a botanical species ("ouriços verdes", "grãos vermelhos", i.e., Bixa orellana L.. The first plant resources extracted from the newly found land by the Portuguese explorers were fire wood and palm hearts.

  16. Briófitas: estado do conhecimento e vulnerabilidade na Floresta Atlântica Nordestina

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    Mercia Patricia Pereira Silva

    2014-10-01

    Full Text Available Com ênfase na Floresta Atlântica Nordestina, é fornecido um diagnóstico do estado da arte do conhecimento sobre a brioflora e, para os últimos dez anos, uma análise por área temática da briologia, estado da região, Instituição executora dos autores e gargalos de conhecimento. No período analisado, foram publicados 60 artigos em periódicos nacionais e internacionais, sendo que a maioria enfoca a linha de pesquisa Florística e Taxonomia, com destaque para o estado da Bahia que apresenta mais de 50% da produção desta linha. A consolidação deste conhecimento pode ser atribuída, em grande parte, à existência de pesquisadores e de Programas de Pós-graduação atuantes na região. A brioflora regional é composta por 788 spp., correspondendo a 58% do total conhecido para o Domínio Floresta Atlântica, onde novas espécies têm sido descritas e táxons vulneráveis, de distribuição rara e bioindicadores evidenciados. A Bahia é o estado de maior riqueza brioflorística, com 483 spp., seguida por Pernambuco, 323 spp. A vulnerabilidade da brioflora regional é acessada mediante endemismo, raridade de distribuição e caráter bioindicador de qualidade ambiental dos táxons. Modelos de distribuição potencial produzidos para vários desses táxons contribuem ao evidenciar novas áreas de exploração, a necessidade de proteção mais eficiente de habitats específicos e a criação de Unidades de Conservação. Para dirimir as lacunas ainda existentes no conhecimento fazem-se necessárias a continuidade de estudos, a intensificação na formação de recursos humanos e nas cooperações científicas.

  17. Efeitos da solarização do solo na densidade populacional da tiririca e na produtividade de hortaliças sob manejo orgânico Effects of soil solarization on purple nutsedge population density and on productivity of vegetable crops under organic cultivation

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    MARTA DOS SANTOS FREIRE RICCI

    2000-11-01

    Full Text Available Foi conduzido um ensaio de campo em Seropédica, Estado do Rio de Janeiro, para avaliar o efeito da solarização do solo na população infestante de tiririca (Cyperus rotundus e na produtividade de hortaliças submetidas a manejo orgânico. A solarização correspondeu à cobertura do solo com polietileno transparente (50 mim por um período de 210 dias. Houve um aumento da temperatura média da camada superficial do solo (0-10 cm da ordem de 23%, em relação ao das parcelas não-solarizadas. Após a retirada do plástico, cultivaram-se: cenoura (Daucus carota 'Brasília', repolho (Brassica oleracea var. capitata 'Astrus', beterraba (Beta vulgaris 'Tall Top Early Wonder' e vagem-anã (Phaseolus vulgaris 'Alessa'. Em termos gerais, a solarização reduziu em 59% a reinfestação pela tiririca. Nas parcelas solarizadas, houve significativo incremento das produtividades de cenoura (28%, vagem (32%, beterraba (37% e repolho (34%. A fixação biológica do nitrogênio, a julgar pela nodulação da vagem, não foi afetada pela solarização, mas a população de nematóides do solo sofreu considerável redução.A field experiment was carried out at Seropédica, state of Rio de Janeiro, Brazil, to evaluate the effects of soil solarization on purple nutsedge (Cyperus rotundus weed population and on productivity of vegetable crops under organic cultivation. Solarization was accomplished by covering the soil surface with transparent polyethylene sheets (50 mum for a period of 210 days. The mean temperature at 010 cm soil layer was about 23% higher than that of unsolarized plots. Following plastic removal the area was planted with carrot (Daucus carota 'Brasília', cabbage (Brassica oleracea var. capitata 'Astrus', garden beet (Beta vulgaris 'Tall Top Early Wonder', and dwarf greenbean (Phaseolus vulgaris 'Alessa'. In general, soil solarization reduced purple nutsedge population by 59%. There was a significant increase in yields of carrot (28%, cabbage

  18. Efeito da época de colheita no crescimento vegetativo, na produtividade e na qualidade de raízes de três cultivares de mandioca Effect of the harvesting time in the vegetative growth, yield and quality of the storage roots of three cassava cultivars

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    Edvaldo Sagrilo

    2002-08-01

    Full Text Available Com o objetivo de determinar o efeito da época de colheita no crescimento vegetativo, na produtividade e na qualidade de raízes tuberosas de três cultivares de mandioca (Manihot esculenta Crantz, desenvolveu-se em Araruna, Noroeste do Estado do Paraná, um experimento em área de Latossolo Vermelho Distrófico, no período de outubro de 1997 a maio de 1999. O delineamento experimental utilizado foi o de blocos completos casualizados, em esquema de parcelas subdivididas, com quatro repetições, sendo os tratamentos principais as cultivares Mico, IAC 13 e IAC 14 e os tratamentos secundários, dez épocas de colheita, realizadas mensalmente a partir do início do segundo ciclo de crescimento das plantas. A produção da parte aérea apresentou, no segundo ciclo, aumentos de 50,0% em relação a um único ciclo vegetativo. O bom desenvolvimento da estrutura vegetativa das plantas levou ao acúmulo de material de reserva nas raízes tuberosas, aumentando a sua produtividade. Os maiores índices de colheita ocorreram dos 19 aos 21 meses de idade, com valores, em média, superiores a 54,0%. As cultivares não diferiram entre si quanto à produção de raízes tuberosas, de massa seca e de amido. Para todas as cultivares, a segunda fase de repouso fisiológico das plantas mostrou-se mais propícia à colheita, em face da maior produção de raízes tuberosas (92,5%, de massa seca (125,0% e de amido (144,0%.With the objective of determining the effect of harvesting time in the vegetative growth, yield and quality of storage roots of three cassava cultivars (Manihot esculenta Crantz, an experiment was carried out in an area of red distrophic Red Latosol in Araruna, Northwest of Paraná state, from October, 1997 to May, 1999. The experimental design was a randomized complete blocks with four replications and treatments arranged in split plots. The main treatments were the cassava cultivars Mico, IAC 13 and IAC 14 and the secondary treatments were ten

  19. Lake Bathymetric Aquatic Vegetation

    Data.gov (United States)

    Minnesota Department of Natural Resources — Aquatic vegetation represented as polygon features, coded with vegetation type (emergent, submergent, etc.) and field survey date. Polygons were digitized from...

  20. Erosão hídrica influenciada por condições físicas de superfície e subsuperfície do solo resultantes do seu manejo, na ausência de cobertura vegetal Water erosion influenced by surface and subsurface soil physical conditions resulting from its management, in the absence of vegetal cover

    Directory of Open Access Journals (Sweden)

    L. B. S. Volk

    2004-08-01

    Full Text Available Práticas diferenciadas de manejo resultam em condições físicas de superfície e subsuperfície do solo distintas, as quais, por sua vez, resultam em níveis de erosão hídrica variados. Com isto em mente, realizou-se um estudo a campo com o objetivo de avaliar o efeito de formas de preparo e cultivo do solo e de manejo dos resíduos culturais em algumas de suas condições físicas de superfície e subsuperfície, em relação à erosão hídrica, durante 5,5 anos. Para tal, utilizou-se chuva simulada sobre um Argissolo Vermelho distrófico típico, bastante degradado pelo manejo anterior, com declividade de 0,08 m m-1. Os tratamentos consistiram dos cultivos de milho e aveia preta, em semeadura direta e em preparo convencional de solo (este com incorporação e com remoção dos resíduos culturais, e do sem cultivo, em preparo convencional de solo (testemunha. Tais tratamentos encontravam-se na condição de solo recém-mobilizado, ou consolidado, e desprovido de cobertura vegetal por ocasião dos testes de erosão com chuva simulada. Estes, em número de dez, foram realizados com o simulador de chuva de braços rotativos, na intensidade de 64 mm h-1 e duração de 90 min, logo após a colheita de uma cultura e o preparo do solo, ou não, para o estabelecimento da cultura seguinte. A incorporação sistemática dos resíduos culturais ao solo recuperou sua estrutura e diminuiu a perda de solo praticamente em 3/4, comparada a sua remoção, resultando também na menor perda de solo no estudo. Devido à recém-criada rugosidade superficial do solo, os tratamentos com preparo convencional apresentaram as maiores capacidades de retenção e infiltração de água, resultando em retardamento da enxurrada e, logo, baixa perda de água, comparados à semeadura direta, independentemente do cultivo e da incorporação ou remoção dos resíduos culturais. O preparo convencional sem cultivo, apesar de apresentar rugosidade superficial similar ao

  1. Análise fitossociológica de um remanescente de vegetação na microbacia do Córrego Criminoso (Bacia do Rio Taquari, Coxim, MS, Brasil: subsídios para a recomposição da vegetação Phytosociological analysis of a vegetation remnant in the Córrego Criminoso Basin (Taquari River Basin, Coxim District, Mato Grosso do Sul, Brazil: data for vegetation recovery studies

    Directory of Open Access Journals (Sweden)

    Adriana Maria Güntzel

    2011-09-01

    Full Text Available O objetivo deste estudo foi realizar a análise florística e fitossociológica preliminar em um remanescente de vegetação na área de entorno do Córrego Criminoso, visando subsidiar futuros projetos de recomposição da vegetação. A área total do remanescente foi determinada com o auxílio de GPS e dos programas Pathfinder e Autocad. Amostragens de indivíduos com CAP maior ou igual a 20 cm foram realizadas em 20 parcelas de 300 m² distribuídas na área. Foram encontradas 26 famílias botânicas contendo 36 gêneros e 49 espécies. A família Leguminosae foi a mais rica em espécies, seguida da família Annonaceae. A espécie Xylopia aromatica foi a mais freqüente, apresentando valores de IVI e IVC de 99,77 e 85,73, respectivamente. Observou-se que mais de 50% das espécies presentes na área são pioneiras ou secundárias, sendo cinco consideradas típicas de matas ciliares: Tapirira guianenses, Cecropia pachystachya, Terminalia argentea, Ocotea pulchellae e Luehea grandiflora. O remanescente de vegetação do entorno do Córrego Criminoso encontra-se fortemente degradado, necessitando de ações de manejo específicos nos fragmentos vegetados e nas áreas destituídas de vegetação, cujas recomendações são propostas.The aim of this study was to complete a preliminary, floristic, phytosociological analyses of a vegetation remnant in the Criminoso Stream Basin, in order to provide data for future projects focusing on vegetation recovery. The total area of the remnant was determined using a GPS and the software Pathfinder and Autocad. Samples of individuals larger or equal to 20 cm CBH were made in 20 quadrats that were 300 m². Thirty-six genera and 49 species, within 26 botanical families, were found. The family Leguminosae was the richest in species, followed by the Annonaceae. Xylopia aromatica was the most frequent species, presenting values of IVI and IVC of 99.77 and 85.73, respectively. More than 50% of the species present

  2. Sustitución de lardo por grasa vegetal en salchichas: incorporación de pasta de aguacate. Efecto de la inhibición del oscurecimiento enzimático sobre el color Substituição do toucinho por gordura vegetal em salsichas: adição da pasta de abacate. Efeito da inibição do escurecimiento enzimatico na cor

    Directory of Open Access Journals (Sweden)

    Ubaldo Rueda-Lugo

    2006-06-01

    Full Text Available La sustitución de grasa animal es importante para mejorar la calidad nutricional de los alimentos de origen animal. Tradicionalmente, los embutidos contienen cantidades relativamente altas de grasas insaturadas, por lo que se ha buscado la sustitución parcial o total de estas con grasas o aceites de origen vegetal. El aprovechamiento del aguacate como fuente de grasa vegetal es una alternativa para este tipo de productos. La oxidación de este fruto es uno de los principales problemas durante la industrialización. En este trabajo se han añadido dos inhibidores del oscurecimiento enzimático, ácido ascórbico y eritorbato de sodio, para determinar el efecto de éstos sobre el color de salchichas de cerdo. Se han encontrado diferencias en la luminosidad de las muestras con respecto al tratamiento control, además de que este mismo parámetro se ha reducido con el tiempo de almacenamiento. No ha habido efecto significativo de los antioxidantes sobre las otras componentes del color. El uso de eritorbato de sodio en la elaboración de pasta de aguacate ha reducido el oscurecimiento de la pasta durante su congelación, sin afectar mayormente otros parámetros de color del producto terminado. La aceptación del producto por un grupo de consumidores ha sido aceptable.A substituição da gordura animal ou toucinho é importante para melhorar a qualidade nutricional dos alimentos de origem animal. Tradicionalmente, os embutidos contêm quantidades relativamente elevadas de gorduras insaturadas, e a substituição parcial ou total com gordura vegetal ou óleo é desejável. O abacate é fonte de gordura vegetal como uma alternativa para este tipo de produto. A oxidação desta fruta é um dos problemas principais durante a industrialização. Neste trabalho foram adicionados dois inibidores de escurecimento enzimatico, ácido ascórbico e eritorbato do sódio, para determinar o efeito destes na cor das salsichas. As diferenças na luminosidade das

  3. Estudo da ocorrência de enteroparasitas em hortaliças comercializadas na região metropolitana de São Paulo, SP, Brasil: I - Pesquisa de helmintos Study on the occurrence of intestinal parasites on vegetables commercially traded in the metropolitan area of S.Paulo, SP, Brazil: I - Search for helminths

    Directory of Open Access Journals (Sweden)

    Carlos Augusto Fernandes de Oliveira

    1992-08-01

    Full Text Available Hortaliças in natura, comercializadas na região metropolitana de São Paulo, SP (Brasil, foram analisadas através de metodologia própria, visando à pesquisa e à identificação de formas de transmissão de helmintos intestinais de interesse médico. As hortaliças examinadas, constituídas de 50 amostras de cada variedade, foram de: alface (Lactuca sativa, variedades lisa e crespa, escarola (Chichorium sp e agrião (Nasturtium officinale. Os resultados evidenciaram elevados percentuais de contaminação em todas as variedades analisadas, porém, as freqüências de helmintos foram maiores no agrião. A escarola apresentou valores médios, geralmente situados entre as alfaces e o agrião. Os números médios de ovos e larvas por 100 gramas de amostra, embora elevados, não apresentaram diferenças estatisticamente significantes entre as quatro variedades de hortaliças estudadas. Uma grande variedade de helmintos, de ocorrência freqüente na população residente na Região Metropolitana de São Paulo, foi observada nas amostras. Os mais freqüentes, no entanto, foram: ancilostomídeos e Ascaris sp. Recuperaram-se também ovos de Toxocara sp, Fasciola sp e de tricostrongilídeos, comprovando a ocorrência de contaminação das hortaliças por fezes de animais domésticos. Considerando-se os resultados obtidos, ressalta-se a importância das hortaliças na transmissão de helmintíases intestinais, bem como a necessidade de medidas que propiciem uma melhoria na qualidade higiênico-sanitária destes alimentos.Vegetables in natura, commercially traded in the metropolitan area of S. Paulo, were analysed by the appropriate methodology with a view to discovering an identifying the paths of transmission of enteroparasites of medical interest. The vegetables under study consisted of 50 samples of each variety listed below: lettuce (Lactuca sativa -oily leaves and crisphead varieties, endive (Chicorium sp and water-cress (Nasturtium Officinale

  4. Purchase policies to fresh fruit and vegetables in supermarkets in Campo Grande, Brazil Formas de compra e procedência de hortaliças na rede de supermercados em Campo Grande (MS

    Directory of Open Access Journals (Sweden)

    Dario de O Lima-Filho

    2012-03-01

    Full Text Available This study aims to analyze purchase policies to fruits and vegetables in supermarkets in Campo Grande, Brazilian Midwest. Thirteen interviews were conducted with representatives from supermarkets, small, medium and large, responsible for purchasing fresh vegetables. By analyzing the responses obtained through interviews, we can observe that producers make almost the entire supply of fruits and vegetables in large supermarkets from other states, and the small and medium establishments usually buy more with the local producer. For retailers, the fruits and vegetables represent an important factor to create internal circulation of customers in stores and a factor of attraction of clients too, in addition, this products offer high profitability. For the supermarket, the fruits and vegetables locally produced are fresher and have lower comparative cost. However, supply regularity, the volume and variety offered by local producers are considered unsatisfactory.O presente estudo objetiva analisar as formas de compra dos supermercados para o abastecimento de hortaliças em Campo Grande. Foram realizadas treze entrevistas com representantes de supermercados de pequeno, médio e grande porte, responsáveis pelas compras destes produtos. Os resultados revelam que praticamente todo o fornecimento de hortaliças nos grandes supermercados é feito por produtores de outros estados, sendo que os estabelecimentos de pequeno e médio porte ainda conseguem abastecer-se satisfatoriamente com os produtores locais. Para os varejistas, o setor de hortaliças representa importante espaço de geração de tráfego interno de clientes nas lojas, sendo um fator de atração. Pode-se verificar, ainda, que as hortaliças produzidas localmente atendem ao requisito "frescor" e também possuem menor custo comparativo, porém, a regularidade no fornecimento, o volume e a variedade oferecida pelos produtores locais são considerados insatisfatórios.

  5. Detecção de estruturas parasitárias em hortaliças comercializadas na cidade de Florianópolis, SC, Brasil Detection of parasitic structures in vegetables commercialized in the city of Florianópolis, SC, Brazil

    Directory of Open Access Journals (Sweden)

    Bolivar Soares

    2006-09-01

    Full Text Available Analisou-se a presença de formas transmissíveis de enteroparasitas em hortaliças consumidas cruas na cidade de Florianópolis,SC, no período de junho de 2003 a maio de 2004. Foram estudadas amostras alface (Lactuca sativa, agrião (Nasturtium officinale e rúcula (Chicarium sp, num total de 750, provenientes do comércio ("sacolões", supermercados e feiras livres. Tais amostras foram lavadas e submetidas ao método de sedimentação espontânea em água por 24 horas. Todas as variedades de hortaliças examinadas apresentaram elevados percentuais de contaminação, porém com maior freqüência no agrião. Observou-se uma grande variedade de protozoários, responsáveis pela transmissão elevada de enfermidades intestinais, na população da região metropolitana de Florianópolis. Ressalta-se a importância das hortaliças na transmissão de enfermidades intestinais, havendo conseqüentemente necessidade de medidas que propiciem uma melhoria na qualidade higiênico-sanitária destas.The presence of transmissible forms of enteroparasites in vegetables consumed raw in Florianópolis city was evaluated in the period concerned between June 2003 and May 2004. A total of 750 samples, including lettuce (Lactuva sativa, watercress (Nasturtium officinale and of rocket (Chicarium sp, commercially available from street markets and supermarkets, were analyzed. All samples were washed and submitted to the sedimentation method. Elevated degrees of contamination were found in all samples analyzed, with higher frequencies being found in the watercress samples. A large variety of protozoans were detected, the levels of which are compatible with the elevated frequency of occurrence in the population of the metropolitan region of the city of Florianópolis. Therefore, the importance of the vegetables in the transmission of intestinal diseases is emphasized, which requires adequate measurements to be taken in order to provide an improvement in the hygienic

  6. Colémbolos (Hexapoda como bioindicadores de la calidad de suelos contaminados con hidrocarburos en el sureste de México Collembola (Hexapoda as quality bioindicators of the hydrocarburans polluted soils in Southestern Mexico

    Directory of Open Access Journals (Sweden)

    Raúl Uribe-Hernández

    2010-04-01

    Full Text Available Se evaluaron invertebrados del suelo, en particular los colémbolos, como bioindicadores de la calidad de suelos contaminados con hidrocarburos en el sureste de México. Se realizaron 2 muestreos en verano-otoño del 2004, en 4 parcelas de 2 hectáreas, denominadas zona 1, 2, 3 y control. De cada unidad se tomaron 8 muestras que fueron procesadas por medio del embudo de Berlese-Tullgren y 4 por el método de flotación. Para colémbolos se determinaron los siguientes índices ecológicos: abundancia, riqueza, índice de Shannon (H', dominancia (λ, equidad(J' e índice de similitud (S. Se realizaron análisis fisicoquímicos del suelo: hidrocarburos totales del petróleo (HTP e hidrocarburos aromáticos policíclicos (HAP, porosidad, pH, CE, MO, N, P, K, CIC y textura. Los HTP, en las zonas contaminadas, sobrepasan los límites de las normas mexicanas ambientales. En todas las zonas de estudio se observaron colémbolos, ácaros y larvas de dípteros, por lo que su abundancia y diversidad pueden ser utilizadas como bioindicadores del grado de contaminación y calidad del suelo. En las zonas contaminadas se registraron abundancias muy bajas de Crustacea, Formicidae, Araneae, Diptera, Pseudoscorpionida, y Diplopoda. Las familias de los colémbolos más ampliamente distribuidas fueron Sminthurididae e Isotomidae. De acuerdo con el análisis de correlación, su diversidad de colémbolos es afectada por la presencia de HAP (flouranteno, naftaleno, pireno, criseno y fenantrenoWe evaluated invertebrates, with an emphasis on Collembola, as bioindicators of soil quality in hydrocarbon-contaminated soils in southeastern Mexico. We carried out 2 sampling periods in summer-fall of 2004 in 4 parcels of 2 hectares each. From each parcel we processed 8 samples using the Berlese-Tullgren funnel technique and 4 using the flotation method. For Collembola we calculated the following ecological indices: abundance, richness, the Shannon index (H', dominance (

  7. Studies on methodology for vegetal bio indicators in bioremediation areas contaminated with petroleum wastes; Estudos sobre metodologia para bioindicadores vegetais em areas de biorremediacao contaminadas com residuos de petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Nascimento Neto, Durval; Castro, Rodrigo Azevedo; Krenczynski, Michele Cristine; Goncalves, Claudia Martins; Souza, Sergio Luiz de [Universidade Federal do Parana (UFPR), Curitiba (Brazil). Curso de Pos-Graduacao em Ciencia do Solo; Carvalho, Francisco Jose Pereira de Campos [Universidade Federal do Parana (UFPR), Curitiba (Brazil). Dept. de Solos; Grube, Karl; Coelho, Jorge Ibirajara Evangelista [PETROBRAS, PR (Brazil). REPAR

    1998-07-01

    The present work has as it main objective the development of bioindicator methodology for use of soil biorremediation criteria and environmental assessment evaluation upon the actual soil biorremediation status quantification. In order to do so morphophysiological aspects of Avena sativa and Barbarea verna, were determinated under greenhouse conditions for a dilution series of contaminated soil with the non contaminated one. A quantification scale model was proposed report the based on the statistical analysis for the defined morphophisyological parameters. Therefore, it has possible to quantigicate phytoxicity and construct phytotoxicity curves for the contaminated soil dilution series. It was possible to conclude that the developed methodology can be used as a criteria of soil actual biorremediation status. (author)

  8. Cultivation of Hylocerus sp. focusing on vegetative propagation, shading and mineral fertiliser=Cultivo de Hylocereus sp. com enfoque na propagação vegetativa, sombreamento e adubação mineral

    Directory of Open Access Journals (Sweden)

    Edmilson Igor Bernardo Almeida

    2016-06-01

    Full Text Available The red pitahaya is a semi-epiphytic cactaceous plant, whose cultivation has attracted great interest in recent years as a result of the growing demand for the fruit, characterised by an exotic appearance and the significant price acquired in the market. However, studies and information on this crop are still rare, especially for the conditions of soil and climate found in Brazil. Currently there are areas in Brazil for the commercial cultivation of red pitahaya, which are based on information adapted from such countries as Colombia, Israel, Mexico and Vietnam, pioneers with greater experience in the cultivation of this fruit. Information generated in the state of São Paulo is also used for other producing regions of Brazil; however it is basic and insufficient for achieving maximum potential productivity. Basic information regarding vegetative propagation, shading and mineral nutrition has not been scientifically defined, and acts as a limitation to crop development and production in the country, particularly in the Northeast. The aim therefore, was to make a brief presentation of the red pitahaya crop and gather relevant scientific results, so that they can contribute to improve exploitation of the crop in Brazil. Studies of Hylocereus sp. in the state of Ceará and other producing regions of Brazil point to the excellent adaptation of this species to environmental conditions in Brazil, and indicate its high productive potential. Some characteristics, such as the easy rooting of cuttings, acclimatisation to cultivation in full sunlight, positive response to mineral fertilizer, and precocity, make Hylocereus sp. a potential option for the diversification of irrigated fruit production in Brazil. = A pitaia vermelha é uma cactácea semi-epífita, cujo cultivo vem despertando grande interesse nos últimos anos em função da crescente demanda pelos seus frutos, caracterizados pela aparência exótica e pelos preços expressivos que adquirem no

  9. Especiarias na Amazônia portuguesa: circulação vegetal e comércio atlântico no final da monarquia hispânica

    Directory of Open Access Journals (Sweden)

    Alírio Cardoso

    2015-01-01

    Full Text Available Na primeira metade do século XVII, surgem diversas propostas para recuperar a economia portuguesa, principalmente após o fim da União Ibérica (1640. Na mesma época, os moradores do Estado do Maranhão e Grão-Pará propõem uma solução: a exploração de certos produtos locais semelhantes às antigas especiarias asiáticas. O objetivo deste trabalho é analisar o fenômeno do surgimento das especiarias na Amazônia portuguesa e o papel da região no contexto político-econômico do fim da união monárquica.

  10. Metabolizable energy and amino acids relationships with the soluble fractions of protein and fiber of vegetable feed ingredients Energia metabolizável e relações de aminoácidos com as frações solúveis de proteína e fibra de ingredientes vegetais

    Directory of Open Access Journals (Sweden)

    Claudio Bellaver

    2004-12-01

    Full Text Available To estimate nutrient and energy digestion with animal from in vitro variables it is necessary to control factors that may interfere on digestion such as: source and concentration of digestor substance, as well as the origin and processing of test ingredients. In this study there were performed five laboratory assays, two with poultry and finally regression equations were established based on variables generated with twelve vegetable ingredients. The results showed that there is greater solubility of proteins with NaOH than with KOH. On average, both alkali produced better discrimination of soluble protein with concentration of 0.02% (range of 68.61% in relation to a concentration of 0.2% (range of 37.97%. Considering interaction between alkali and concentration, the best discrimination on protein solubility was reached with NaOH at 0.02%. The methods of protein or fiber solubilization together with the chemical analysis showed significant results variation among ingredients and when they were used to estimate in vivo variables they produced good estimates. It was concluded that reliable digestion estimates for energy or amino acids from vegetable feed ingredients could be obtained from in vitro variables, when considering solubilities of protein and fiber with chemical analysis.Para estimar a digestão de nutrientes e de energia dos animais a partir de variáveis in vitro, é necessário controlar os fatores que interferem na digestão - origem e concentração da substância digestora - e ter conhecimento da fonte e do processo que envolve o ingrediente em teste. Neste trabalho, foram conduzidos cinco ensaios laboratoriais, dois com animais e, por fim, estabelecidas equações de regressão a partir das variáveis geradas com a utilização de 12 ingredientes vegetais. Os resultados mostraram que há maior solubilidade das proteínas com o NaOH que com o KOH e que, na média de ambos os álcalis, a concentração de 0,02% permite maior

  11. Avaliação da qualidade da água das ribeiras Odelouca, Odeleite e Foupana (Algarve, Portugal): uso de macroinvertebrados bentónicos como bioindicadores

    OpenAIRE

    Máximo, Isa Brioso

    2009-01-01

    São várias as perturbações antropogénicas que afectam os rios e as ribeiras em Portugal, razão pela qual é urgente a implementação de medidas que visem a sua protecção. Neste contexto, foi criada em 2000 a directiva quadro da água (DQA) que visa atingir o bom estado das massas de água até 2015. Este trabalho teve como objectivos: contribuir para o conhecimento da comunidade de macroinvertebrados nas ribeiras do Algarve; verificar a existência de diferenças na comunidade de macr...

  12. Avaliação do risco da contaminação ambiental utilizando como bioindicador o ratinho caseiro (Mus musculus)

    OpenAIRE

    Lopes, Ana Margarida Alonso Leitão

    2009-01-01

    Os metais pesados e os hidrocarbonetos policíclicos aromáticos (PAHs) são poluentes orgânicos de grande persistência ambiental encontrando-se entre os poluentes químicos mais perigosos para os ecossistemas. De uma maneira geral, estes poluentes são contaminantes da cadeia alimentar conhecidos pelos seus efeitos adversos na saúde animal e humana, nomeadamente, no aumento da incidência de alguns tipos de cancro associados a estes poluentes. Devido ao seu carácter ubiquitário, constituem uma pot...

  13. The Weird Vegetable Price

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    The Chinese Government faces the task of stabilizing vegetable prices to avoid steep increases and dips Fluctuations of vegetable prices in China have recently caused near panic in the domestic market.Purchase prices for farm produce are decreasing dramatically

  14. Procedures for Sampling Vegetation

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report outlines vegetation sampling procedures used on various refuges in Region 3. The importance of sampling the response of marsh vegetation to management...

  15. Investigation of North American vegetation variability under recent climate: A study using the SSiB4/TRIFFID biophysical/dynamic vegetation model

    OpenAIRE

    Zhang, Z.; Xue, Y.; Macdonald, G.; Cox, PM; Collatz, GJ

    2015-01-01

    ©2015. American Geophysical Union. All Rights Reserved. Recent studies have shown that current dynamic vegetation models have serious weaknesses in reproducing the observed vegetation dynamics and contribute to bias in climate simulations. This study intends to identify the major factors that underlie the connections between vegetation dynamics and climate variability and investigates vegetation spatial distribution and temporal variability at seasonal to decadal scales over North America (NA...

  16. Etnobotânica nordestina: estudo comparativo da relação entre comunidades e vegetação na Zona do Litoral - Mata do Estado de Pernambuco, Brasil Northeast Ethnobotany: links between communities and vegetation of the Coast Zone of the Mata Region in Pernambuco State, Brazil

    Directory of Open Access Journals (Sweden)

    Alberto Jorge da Rocha Silva

    2005-03-01

    Full Text Available O trabalho visa determinar as relações entre comunidades e vegetação na Zona da Mata de Pernambuco. A comunidade da Usina São José (Igarassu - Ig é formada por vilas rurais, vizinhas da Reserva Ecológica da Mata da Usina São José. Jaguarana (Paulista-Pa é uma comunidade urbana, próxima à Reserva Ecológica da Mata de Jaguarana. Levantou-se as plantas úteis para estas comunidades por meio de 38 entrevistas não-estruturadas, enquadrando-as nas categorias de uso alimentação, comércio, construção, mágico, medicinal, tecnológico e outros. Foram registradas 334 espécies, nativas e cultivadas. Comparou-se as comunidades, através do Quociente de Similaridade de Sørensen (Qs, obtendo-se maiores índices para plantas alimentícias (QsIgPa= 0,71, predominantemente cultivadas, e medicinais (QsIgPa= 0,56, 45,1% delas nativas, predominantemente herbáceas. A vegetação nativa constitui uma fonte importante de recursos medicinais mas é subutilizada como fonte de alimento e tem pouca relevância na visão cosmológica das comunidades. Os vegetais não têm relevância na atividade de comércio, servindo como complemento de renda para as famílias (QsIgPa= 0,30. Na categoria construção enquadram-se, majoritariamente, espécies nativas (87,8% e arbóreas (92,7%. Em tecnologia têm maior representatividade espécies nativas (85,7% e arbóreo/arbustivas (84,1%. As comunidades utilizam diferentes fontes vegetais para as categorias construção, mágica, tecnologia e outros, decorrentes tanto das principais atividades que nelas exercem seus moradores, como dos recursos naturais à sua disposição.The objective of this work is to determine the social behaviour concerning the consumption of vegetal species by local communities. The involved localities are: the Usina São José (Igarassu - Ig, which involves rural communities in the surroundings of the Ecological Reserve of the Usina São José and the Jaguarana (Paulista - PE, an urban

  17. Pacemaker endocarditis: approach for lead extraction in endocarditis with large vegetations Endocardite em marca-passo: abordagem na extração do cabo-eletrodo em endocardite com grandes vegetações

    Directory of Open Access Journals (Sweden)

    Guillermo Nuncio Vaccarino

    2009-12-01

    Full Text Available The presence of large lead vegetations poses additional difficulties for explantation because many methods cannot be used due to the potential hazard of embolism. We report two patients with large vegetation on the ventricular lead due to endocarditis and one of them with an atrial septal defect associated. It was applied a combined technique of transvenous lead removal and sternotomy with cardiopulmonary bypass for the complete removal of pacemaker wires. This procedure resolved the pacemakers endocarditis safely and subsequently a new transvenous device was placed on the opposite site.A presença de grande crescimento vegetativo no eletrodo do marca-passo impõe dificuldades adicionais para a sua extração, pois alguns métodos não podem ser aplicados pelo risco potencial de embolismo. Reportamos dois pacientes com grande crescimento vegetativo no eletrodo ventricular, devido a endocardites, um deles com comunicação intraventricular associada. Foi aplicada uma técnica combinada de extração de eletrodo transvenosa e esternotomia com circulação extracorpórea para remoção completa dos cabos do marcapasso. Este procedimento resolveu a endocardite de marcapasso de maneira segura e, subsequentemente, foi colocado um novo dispositivo intravenoso no lado oposto.

  18. European Vegetation Archive (EVA)

    NARCIS (Netherlands)

    Chytrý, Milan; Hennekens, S.M.; Jiménez-Alfaro, Borja; Schaminée, J.H.J.; Haveman, Rense; Janssen, J.A.M.

    2016-01-01

    The European Vegetation Archive (EVA) is a centralized database of European vegetation plots developed by the IAVS Working Group European Vegetation Survey. It has been in development since 2012 and first made available for use in research projects in 2014. It stores copies of national and region

  19. Natural vegetation inventory

    Science.gov (United States)

    Schrumpf, B. J.

    1973-01-01

    Unique characteristics of ERTS imagery can be used to inventory natural vegetation. While satellite images can seldom be interpreted and identified directly in terms of vegetation types, such types can be inferred by interpretation of physical terrain features and through an understanding of the ecology of the vegetation.

  20. Dutch Vegetation Database (LVD)

    NARCIS (Netherlands)

    Hennekens, S.M.

    2011-01-01

    The Dutch Vegetation Database (LVD) hosts information on all plant communities in the Netherlands. This substantial archive consists of over 600.000 recent and historic vegetation descriptions. The data provide information on more than 85 years of vegetation recording in various habitats covering te

  1. Consumption of fruits and vegetables and C-reactive protein in women undergoing cosmetic surgery Consumo de frutas y vegetales, y proteína C-reactiva en mujeres sometidas a cirugía cosmética

    Directory of Open Access Journals (Sweden)

    R. L. F. C. Lima

    2010-10-01

    Full Text Available Low-grade inflammation adversely influences metabolism and cardiovascular prognosis, nevertheless increased intake of fruits and vegetables has rarely been studied in this context. Objective: In a prospective controlled study, the effect on C-reactive protein (CRP levels was assessed. Methodology: Sixty consecutive women undergoing cosmetic abdominal surgery were instructed to consume six servings each of fruits and vegetables during the first postoperative month. Detailed 24h interviewer-administered dietary recall was conducted at baseline and at the end of the study, with weekly returns to monitor unscheduled dietary changes and compliance with the protocol. Variance (ANOVA and covariance (ANCOVA were evaluated to confirm significance and minimize confounding variables. Results: No differences concerning age (42.2 ± 5.3 vs 41.1 ± 6.0 years or BMI (25.5± 3.1 vs 25.0± 3.0 kg/m² occurred. Ingestion of fruits increased to approximately 5.2 vs 3.9 and of vegetables 5.9 vs 3.4 servings/ day, respectively. CRP decreased more conspicuously in the treated group (P=0.028, and correlation between vitamin C input and CRP in supplemented participants was demonstrated (P=0.014. Conclusions: Higher intake of antioxidant foods was feasible, and an antiinflammaotory effect occurred. Further studies with longer administration and follow-up period are recommended.Inflamación subclínica influencia adversamiente el metabolismo y el pronóstico cardiovascular, pero ingestión elevada de vegetales y frutas há sido pocas veces investigada en este contexto. Objetivo: En un estúdio prospectivo y controlado, el impacto sobre la proteina C-reactiva fue determinado. Metodología: Sesenta pacientes consecutivas sometidas a cirugía cosmética abdominal fueron instruídas a consumir seis porciones diárias de frutas y mais seis de vegetales, en el primero més de postoperatório. Un recordatório alimentar detallado registrado por dietista fue conducido

  2. Effects of NaCl stress, Ca2+ and GA3 on seed germination of three vegetables in Cucurbita L.%NaCl胁迫及Ca2+和GA3对南瓜属3种蔬菜种子发芽的影响

    Institute of Scientific and Technical Information of China (English)

    王广印; 韩世栋; 赵一鹏; 周秀梅; 李新峥

    2005-01-01

    研究了NaCl胁迫对南瓜(Cucurbita moschata Duch.)、笋瓜(C. maxima Duch.)和西葫芦(C.pepo L.)种子萌发的影响及不同浓度外源Ca2+和GA3对NaCl胁迫下南瓜种子发芽的效应.结果表明,用30 mmol·L-1NaCl处理,南瓜种子的发芽率高于对照(蒸馏水),而用100和170 mmol·L-1NaCl处理,西葫芦和笋瓜种子的发芽率下降率为负值,表明较低浓度NaCl胁迫可一定程度提高西葫芦、笋瓜和南瓜种子的发芽率;高浓度NaCl胁迫对种子发芽有明显的抑制作用.种子萌发期耐盐能力从大至小依次为西葫芦、南瓜、笋瓜.在170 mmol·L-1NaCl胁迫下,施加5~30 mmol·L-1外源Ca2+或浸种处理,对南瓜种子发芽有促进作用,但高浓度外源Ca2+(≥50 mmol·L-1CaCl2)则具有抑制作用.在170 mmol·L-1NaCl胁迫下,用不同浓度GA3浸种处理,对南瓜种子发芽有抑制作用.

  3. Flora e vegetação do Brasil na Carta de Caminha The flora and the vegetation of Brazil in Caminha's letter, written in 1500, to the Portuguese king D. Manoel I

    OpenAIRE

    Tarciso S. Filgueiras; Ariane Luna Peixoto

    2002-01-01

    Apresenta-se uma análise dos termos referentes a plantas e a vegetação encontrados na Carta de Pero Vaz de Caminha ao Rei D. Manoel, quando do descobrimento do Brasil ("Carta a El Rei D. Manoel"). Tomou-se como ponto de partida a versão da Carta publicada por Rubem Braga. Nesse texto, foram numeradas todas as linhas (1 a 1013) que em seguida foram examinadas minuciosamente, a procura de referências diretas ou indiretas a plantas ou suas associações. A carta de Caminha apresenta 118 menções a ...

  4. O movimento do carvoejamento na Amazônia oriental brasileira: a dinâmica da produção do carvão vegetal em Rondon do Pará

    OpenAIRE

    Amaral, Mayka Danielle Brito

    2014-01-01

    O artigo tem como objetivo analisar a dinâmica do carvoejamento na Amazônia oriental, especificamente no município de Rondon do Pará, localizado no sudeste do estado do Pará. Para tanto, utiliza-se como metodologia a análise documental de fontes secundárias, do Instituto Brasileiro de Geografia e Estatística (IBGE) e da Secretaria Estadual de Meio Ambiente (SEMA), bem como, a análise de fontes primárias obtidas por meio de trabalhos de campo realizados nas carvoeiras de propriedades privadas ...

  5. A study on elemental composition in epiphytic lichen samples used as bioindicator of air pollution in Sao Paulo city; Estudo sobre a composicao elementar nas amostras de liquen epifitico utilizado como bioindicador da poluicao aerea na cidade de Sao Paulo

    Energy Technology Data Exchange (ETDEWEB)

    Montezani, Edmila

    2010-07-01

    Studies on air pollution have intensified in recent years, due to the diversity of emissions and the effect caused to the health of populations. Consequently, several techniques have been investigated for air pollution evaluation and among them one that has gained considerable attention is that of biomonitoring. In this study chemical elemental levels in the atmosphere of Sao Paulo city were evaluated, by means of passive biomonitoring, using epiphytic Canoparmelia texana species, in order to compare between the results obtained in samples from different sites of Sao Paulo city and in a reference site of Ubatuba city, SP. Neutron activation analysis (NAA) procedure applied in the analyses consisted of irradiating aliquots of samples along with synthetic standards of elements in the nuclear reactor IEA-R1 for 16 hours under a thermal neutron flux of about 5.0 x 10{sup 12} n cm{sup -2} s{sup -1}, followed by gamma ray spectrometry for the determination of As, Br, Ca, Co, Cr, Cs, Fe, K, La, Rb, Sc, Se and Zn. Results obtained in the analyses of lichens samples in replicates presented good reproducibility indicating homogeneity of the prepared samples. The precision and accuracy of the results were evaluated by the analyses of certified reference materials IAEA-336 Lichen and INCT-TL-1 Tea Leaves. Results obtained in the reference materials presented, in general, good precision, with relative standard deviations between 0.4 and 14.8% and good accuracy with relative errors between 0.2 and 8.7%. In Sao Paulo city, the lichens were collected in the following sites: Parque Dom Pedro II, Congonhas, Cidade Universitaria, Lapa, Mooca, Morumbi, Nossa Senhora do O, Parque Ibirapuera, Pinheiros, Santana, Santo Amaro and Taboao da Serra. Element concentrations found in lichens indicated a great variability depending on the sites where the samples were collected. The results obtained in the lichens submitted to the cluster analysis indicated three groups of sampling sites according to the chemical similarity obtained in lichens. Lichen collected in the reference site of Ubatuba indicated that most of element concentrations are lower or at the same order of magnitude when compared with those obtained in lichens collected in Sao Paulo city. The highest element concentrations in the sample from Ubatuba were obtained for Br, K and Zn. Results obtained in this study indicated that the origins of elements present in the atmosphere of Sao Paulo city are due to mainly vehicular emissions followed industrial emissions and from soil. Elements named vehicular emission markers (Br, Co, Sb and Zn), industrial markers (Cr, Co and Fe) and from soil (Sb, Se, Rb e La) were determined in the lichens. (author)

  6. Searching for bioindicators of forest fragmentation: passerine birds in the Atlantic forest of southeastern Brazil Busca por bioindicadores de fragmentação florestal: aves Passeriformes na Floresta Atlântica do Sudeste do Brasil

    OpenAIRE

    A. Piratelli; SD. Sousa; JS. Corrêa; VA. Andrade; RY. Ribeiro; LH. Avelar; EF. Oliveira

    2008-01-01

    Aiming to evaluate the potential of Passerine birds as bioindicators of forest fragmentation, we studied the avifauna in the mountain region of the state of Rio de Janeiro by mist-netting between 2001 and 2005. We sampled six sites, including four small fragments (from 4 to 64 ha) in an agricultural area (Teresópolis), one second-growth forest (440 ha - Miguel Pereira) and a continuous forest (10,600 ha, Serra dos Órgãos National Park - SONP). Indicator Species analysis and a Monte Carlo test...

  7. Método multirresíduo para monitoramento de contaminação ambiental de pesticidas na região de Bauru (SP usando mel como bio-indicador

    Directory of Open Access Journals (Sweden)

    Sandra Regina Rissato

    2006-10-01

    Full Text Available The presence of residues of the major groups of pesticides (organohalogen, organophosphorous, pyrethroids and organonitrogen in representative samples of honey produced in Bauru (state of São Paulo, Brazil was investigated from 1999 through2004. A multiresidue method was applied to honey samples to determine 48 pesticides with recoveries ranging from 76 to 95%. The limits of detection found were lower than 10 µg/kg for GC-MS-SIM. The results indicated that most pesticides found in the samples belonged to the organohalogen and organonitrogen groups. Residues of malathion were detected in almost all of the samples in high concentration.

  8. Alterações na biomassa e na atividade microbiana da serapilheira e do solo, em decorrência da substituição de cobertura florestal nativa por plantações de eucalipto, em diferentes sítios da Região Sudeste do Brasil Microbial biomass and activity in soil and forest litter of eucalyptus plantations and native vegetation in Southeastern Brazil

    Directory of Open Access Journals (Sweden)

    Emanuela Forestieri da Gama-Rodrigues

    2008-08-01

    Full Text Available O eucalipto é a principal espécie florestal utilizada nos programas de reflorestamento no Brasil. Questiona-se quais as mudanças que essa espécie pode promover no solo. O impacto da substituição de uma cobertura vegetal por outra pode variar com as condições de clima e de solo, e os resultados obtidos numa região podem não ser extrapoláveis numa avaliação supra-regional. A biomassa e a atividade microbiana têm sido sugeridas como indicadores adequados de alterações provocadas por mudanças no uso da terra. Neste trabalho, essas características foram utilizadas para avaliar alterações na serapilheira e no solo em decorrência da substituição de cobertura florestal nativa por plantações de eucalipto em quatro sítios da Região Sudeste brasileira. A quantidade de serapilheira foi maior nas plantações de eucalipto do que nas formações nativas, o que foi explicado pela maior relação C:N na serapilheira do eucalipto. O impacto da conversão da vegetação nativa em eucalipto nos atributos microbiológicos da serapilheira e do solo variou conforme as características específicas analisadas de cada sítio florestal. Diferenças entre os teores de C e de N na biomassa microbiana de eucalipto e vegetação natural foram mais freqüentemente observadas no solo do que na serapilheira. A biomassa microbiana da serapilheira representou uma reserva de C e N maior do que a biomassa microbiana do solo, constituindo-se num compartimento de relevante contribuição a solos com baixos teores desses nutrientes.In Brazil, afforestation programs use mainly eucalyptus and it has been frequently questioned due to possible changes in the soil caused by this exotic tree species. The impact of land use changes can vary with climate conditions and soil, and results obtained in a specific area may not be extrapolated to the supra-regional level. Biomass and microbial activity have been suggested as appropriate indicators of soil disturbance

  9. Gênese e micromorfologia de solos sob vegetação xeromórfica (caatinga na região dos Lagos (RJ Genesis and micromorphology of soils under xeric vegetation in the Lakes region, State of Rio de Janeiro (Brazil

    Directory of Open Access Journals (Sweden)

    M. M. Ibraimo

    2004-08-01

    úmicas, observou-se uma tendência à formação e migração de complexos orgânicos por soluções ricas em sódio, como fulvatos e humatos de sódio, conforme mostram as altas e significativas correlações entre o Na trocável e as frações fúlvicas e húmicas.In the Lakes Region of Rio de Janeiro State, the occurrence of a drier climate creates a peculiar environment where there is a trend of salinization and presence of xeric vegetation. Physical, chemical, mineralogical and micromorphological properties were studied in selected soil transects. The soils are eutrophic as result of nutrient cycling, low weathering degree, and presence of primary minerals with nutrient reserves in their composition. The occurrence of well developed eutrophic soils (Oxisols under caatinga (xeromorphic vegetation on the flat tops all over the region is evidence of a paleo-weathering under wetter conditions. These Oxisols (P2 and P7 pedons are kaolinitic and have a microgranular structure, while the Ki index, Fe o/Fe d ratio, Fe levels, and micromorphological and submicroscopic features are typical for this soil class. In the clay fraction they also contain gibbsite, illite, and goethite. The presence of illite, the K reserve, and the intergrade character indicate a low degree of weathering, contrasting with other typical Oxisols of more humid areas of Southeastern Brazil. All studied soils are pedogenetically polycyclic, revealing a current acidification trend at the surface, suggesting the occurrence of a more seasonal climate in a recent past. This trend of acidification induces the destabilization and breakdown of expansible 2:1 clays in subsurface and release of structural Mg and Al to more soluble fractions. This causes a Ca:Mg imbalance in B horizon. There is a marked influence of Na and/or Na + Mg on clay dispersion, causing a textural gradient and higher amount of dispersed clay in the soils. The high Na and K exchangeable amounts were ascribed to marine lagoon sprays to the soil

  10. Análise da influência vegetacional na altimetria dos dados SRTM em bacias hidrográficas no semiárido Analisys of the influence of vegetation in the altimetry of SRTM data in semi-arid watersheds

    Directory of Open Access Journals (Sweden)

    Carlos Alexandre Gomes Costa

    2010-06-01

    Full Text Available A topografia evidencia-se como um fator imprescindível no entendimento da dinâmica hidrológica e ambiental. Assim, torna-se fundamental a validação de dados altimétricos obtidos por sensoriamento remoto. Os dados SRTM de elevação são resultado de uma missão orbital por RADAR interferométrico que corresponde à topografia da superfície da Terra, considerando inclusive a influência da vegetação no retorno do sinal. O objetivo deste trabalho é validar os dados SRTM para as condições do semi-árido brasileiro. Para isto foram elaboradas comparações e análise estatística de dados obtidos no campo com GPS diferencial e outras bases de dados referenciais existentes, cartas planialtimétricas DSG/ SUDENE e dados de RN do IBGE em pontos localizados na bacia do rio Jaguaribe situada no semi-árido cearense. Os resultados apresentaram erro altimétrico de aproximadamente 7,0 m com relação aos RNs da bacia. Com uso do DGPS em um relevo plano com baixa declividade e com vegetação de porte baixo os resultados apontam um erro altimétrico de aproximadamente 1,7 m. Conclui-se que, apesar da influência da cobertura vegetal na variação altimétrica, os dados SRTM apresentam-se confiáveis para regiões com vegetação típica do semi-árido.Topography is a major factor for understanding hydrological and environmental dynamics. Therefore, validation of the altimetric data obtained by remote sensing is required. SRTM data are a result of an orbital mission by interferometer RADAR, corresponding to the Earth surface topography, also considering the influence of vegetation in the signal. The objective of this work is to validate SRTM data for the semi-arid conditions in Northeast Brazil. The methodology used consists in the comparison and statistical analysis of field data obtained with a differential GPS (DGPS and other existing data bases such as the DSG/SUDENE topographic maps and level reference points from IBGE in the Jaguaribe basin

  11. Estudo da ocorrência de enteroparasitas em hortaliças comercializadas na região metropolitana de São Paulo - SP, Brasil: II - Pesquisa de protozoários intestinais Study of the occurrence of intestinal parasites os vegetables comercially traded in the metropolitan area of S.Paulo, SP - Brazil: II - Research into protozoan cysts

    Directory of Open Access Journals (Sweden)

    Carlos Augusto Fernandes de Oliveira

    1992-10-01

    Full Text Available Foram analisadas hortaliças "in natura", comercializadas na Região Metropolitana de São Paulo, SP-Brasil, visando à pesquisa e à identificação de cistos de protozoários de interesse médico. As hortaliças, constituídas de 50 amostras de cada variedade, consistiram em: alface (Lactuca sativa, variedades lisa e crespa, escarola (Chichorium sp e agrião (Nasturtium officinale. Os resultados evidenciaram elevados percentuais de contaminação em todas as variedades de hortaliças analisadas, porém as freqüências de protozoários foram maiores no agrião. As amostras de alfaces apresentaram os menores percentuais de contaminação, enquanto que a escarola apresentou valores geralmente situados entre o agrião e as alfaces. Observou-se uma grande variedade de protozoários, cujas freqüências de ocorrência na população residente na Região Metropolitana de São Paulo são igualmente elevadas. Os mais freqüentes foram Entamoeba sp (com 4 e 8 núcleos e Giardia sp. Foram também isolados cistos de Iodamoeba sp, Endolimax sp e Chilomastix sp. Os elevados níveis de contaminação fecal encontrados nas amostras analisadas apontam para a importância dos alimentos na transmissão de protozoários intestinais.Vegetables in natura , commercially traded in the metropolitan area of S.Paulo, Brazil, were analised by means of the appropriate methodology with a view to discovering and identifying protozoan cysts of medical interest. The vegetables under study consisted of 50 samples of each of the variaties listed bel ow: lettuce (Lactuca sativa - oily leaves and crisphead varieties, endive (Chicorium sp and water-cress (Nasturtium officinale. Results showed high rates of contamination in all the varieties of vegetable analysed. However, the water-cress was the one which presented the highest frequencies of enteroparasites. Both the oily leafes and crisphead varieties of lettuce presented the lowest rates of contamination, whereas endive

  12. Caracterização da vegetação de restinga da RPPN de Maracaípe, PE, Brasil, com base na fisionomia, flora, nutrientes do solo e lençol freático Characterization of restinga vegetation at Maracaípe, Pernambuco State, Brazil, based on physiognomy, flora, soil nutrients, and water-table level

    Directory of Open Access Journals (Sweden)

    Eduardo Bezerra de Almeida Jr.

    2009-03-01

    Full Text Available O objetivo deste estudo foi realizar o levantamento florístico e descrever as fisionomias, relacionando-as com as formas de vida, fertilidade do solo e variações do lençol freático encontradas na restinga de Maracaípe. A área possui 76,2 ha de vegetação de restinga, sob as coordenadas 08º31'48"S e 35º01'05"W. Possui clima do tipo As' e solo classificado como Neossolo Quartzarênico. Foram feitas caminhadas aleatórias nas três fisionomias existentes - floresta, campo não inundável e campo inundável, durante o período de julho/2003 a julho/2005, para coleta de material botânico. A lista florística foi comparada a outras listas de restinga da região Nordeste. Foram inventariadas 187 espécies, 148 gêneros, distribuídas em 71 famílias. Entre as famílias mais representativas, destacam-se: Poaceae (13 espécies, Cyperaceae (12, Myrtaceae (10, Orchidaceae (9, Rubiaceae (8, Bromeliaceae e Fabaceae (7. A forma de vida "fanerófito" foi elevada na fisionomia florestal e as formas "caméfito", "terófito" e "criptófito", nas fisionomias campo inundável e não inundável. Os solos das fisionomias diferiram quanto à composição química e só ocorreu afloramento do lençol freático na fisionomia campo inundável. Este estudo permitiu concluir que a proporção de formas de vida, variação no nível do lençol freático, matéria orgânica e teor de alumínio no solo foram determinantes na separação das fisionomias da restinga de Maracaípe.We undertook a floristic survey to describe the phytophysiognomies of a restinga at Maracaípe, and related these to life form, soil fertility, and variation in the local water-table level. The study area is located at 08º31'48"S and 35º01'05"W, and has 76.2 ha of restinga vegetation. The regional climate is classified as As' and local soils are sandy Neosols. Random walks to collect botanical material were made in the three different vegetation physiognomies found in the area - forest

  13. Reguladores de crescimento vegetal na concentração de macronutrientes em videira Itália Plant growth regulators on macronutrients in Itália grapes

    Directory of Open Access Journals (Sweden)

    Teresinha Costa Silveira de Albuquerque

    2008-01-01

    Full Text Available Em clima tropical semi-árido, o uso de reguladores vegetais em fruteiras permite o manejo do crescimento vegetativo, tão necessário ao escalonamento da produção e ao aumento da fertilidade das gemas. Estas substâncias influenciam vários fenômenos fisiológicos relacionados com a absorção mineral, como a condutância de membrana e utilização metabólica de íons. O objetivo deste trabalho foi avaliar o crescimento vegetativo, produção de matéria seca dos ramos, concentração e quantidade acumulada de N, P, K, Ca e Mg nos ramos e nos pecíolos e produção de panículas florais em resposta ao uso de reguladores vegetais, em plantas de videira da cultivar Itália. No experimento foram avaliados três ciclos vegetativos e cinco tratamentos (controle, chlormequat - 1500 mg L-1; daminozide - 3000 mg L-1; uniconazole - 30 mg L-1 e cloreto de mepiquat - 300 mg L-1, aplicados nas plantas em pulverizações aos 35 e 70 dias após a poda. Com o chlormequat e o uniconazole ocorreu efeito cumulativo nas plantas, quando aplicados em ciclos sucessivos da cultura, favorecendo o acúmulo de nutrientes e a diferenciação de gemas férteis em comparação com as plantas controle das videiras 'Itália'. Embora o daminozide tenha inibido significativamente o crescimento das plantas, não resultou em maior acúmulo de nutrientes e emissão de panículas florais nas plantas tratadas.In semi-arid tropical climate, the use of plant growth regulators in fruit trees allows the vegetative growth control, so necessary to the assignment of the production and the increase of the fertility of the buds. These substances influence several physiological processes related to the mineral absorption, for example: membrane condutance and metabolic use of ions. The objective of this work was to evaluate vegetative growth, stem dry mater, N, P, K, Ca and Mg content in the stem and petiole and panicle production in response to plant growth regulators in grape "It

  14. Vegetation Fuel Mapping

    Directory of Open Access Journals (Sweden)

    A. V. Volokitina

    2014-12-01

    Full Text Available All vegetation sites as objects of burning are structural complexes of various fuels. Especially complex are forest biogeoceonoses. For practical use, pyrological characteristics of vegetation are reflected on plans and maps showing both general one-sided estimations with site descriptions (for example, their fire hazard and detailed multi-sided characteristics of all compounds in the vegetation fuel complexes. The latter become basic maps for obtaining various pyrological estimations and are called vegetation fuel maps. Vegetation fuel (VF mapping can be made using two methodological approaches: first, by distinguishing pyrological vegetation categories as standard complexes; second, by individually characterizing each vegetation site in terms of VF. Obviously, the standard VF characteristic of sites can be only approximate and rough, since the possible number of studied site categories is limited. For large-scale mapping, the detailed individual characteristic of vegetation sites in terms of VF is more preferable and precise but more expensive. Therefore, historically, the first approach to VF mapping got its development, i. e. distinguishing and mapping of certain vegetation categories with standard characteristics. Foreign and Russian methodical approaches to vegetation fuel (VF classification and mapping are considered. Examples of VF mapping at different scales and guidelines for their use are given.

  15. Ácido indolbutírico em diferentes diâmetros na estaquia de Luehea divaricata Indolbutyric acid in different diameters on the vegetative propagation of Luehea divaricata

    OpenAIRE

    Jardel Pizzatto Pacheco; Elci Terezinha Henz Franco

    2008-01-01

    Luehea divaricata Mart. é uma árvore de porte médio com madeira resistente e de grande flexibilidade, características que a qualificam como matéria-prima na fabricação de móveis vergados. Devido à relevância desta espécie em indústrias de base florestal, o objetivo deste trabalho foi avaliar o efeito do ácido indolbutírico e do diâmetro da estaca como subsídio à produção de matrizes adequadas ao uso comercial. Foram utilizadas estacas com 20cm de comprimento, coletadas de matrizes com aproxim...

  16. Influências de Atta spp. (Hymenoptera: Formicidae na recuperação da vegetação pós-fogo em floresta de transição amazônica Influences of leafcutter ant Atta spp. (Hymenoptera: Formicidae on vegetation recovery after fire in Amazonian transitional forest

    Directory of Open Access Journals (Sweden)

    Karine Santana Carvalho

    2012-03-01

    Full Text Available Este estudo investigou o papel das saúvas na recuperação da vegetação pós-fogo. Foi hipotetizado que a perturbação do fogo aumenta a abundância de ninhos de saúva (1 e as atividades de remoção de sementes (2 e desfolha (3, especialmente no ambiente de borda. Os ninhos de saúva foram inventariados e mapeados e após 17 meses, checados para o registro de sua atividade e de novas colônias emergindo na área. Realizou-se experimentos comparativos de remoção de sementes e desfolha de plântulas em duas parcelas de 50 ha, uma submetida a fogo anual (tratamento e outra sem fogo (controle. A abundância de ninhos de saúva foi maior na parcela tratamento que na parcela controle, especialmente na borda da floresta. As espécies encontradas foram: Atta cephalotes, A. laevigata e A. sexdens , sendo esta última a espécie mais abundante e que mostrou aumento em número de colônias ativas após 17 meses. O aumento na abundância de ninhos na parcela tratamento foi acompanhado por um aumento na atividade dessas formigas. Enquanto mais de duas folhas foram arrancadas por plântula nessa parcela, menos de uma foi registrada na parcela controle. Também a abundância média de galhos desfolhados e de sementes removidas por saúvas foi maior na parcela tratamento que na parcela controle. As saúvas tanto podem diminuir ou retardar o processo de regeneração florestal pós-fogo, quanto acelerá-lo, devido à elevada predação seletiva que favorece as espécies menos palatáveis. Desta forma, suas atividades podem modificador apenas a composição da vegetação recuperando-se do fogo.In this study we investigated the role of leaf-cutting ants in the post-fire vegetation recovery. We hypothesized that a forest plot submitted to annual fire presents: (1 higher abundance of leaf-cutting ant nests; (2 higher removal of seeds; and (3 higher herbivory rates of leaf-cutting ants, when compared to the forest plots without fire (control. The leaf

  17. Ambrosia beetles as bioindicators of “neem decline” in Brazil Escolitídeos como bioindicadores do “declínio do nim” no Brasil

    Directory of Open Access Journals (Sweden)

    Susete do Rocio Chiarello Penteado

    2011-03-01

    Full Text Available

    This is the first record of the beetles attack (Curculionidae, Scolitinae in neem plantations located in Brejinho de Nazaré, Tocantins, Brazil. The insects were observed on plants between 7 and 10 years old and were identified as Xylosandrus compactus (Eichhoff, Cryptocarenus diadematus Eggers, 1937 and Hypothenemus sp. Westwood, 1836. The attacked plants showed a growth rate considered low for the region, had a low seed production, high defoliation and branch sprouting, followed by the death of many young shoots and/or the tip of the branch. The insects caused intense gum exudation in the holes caused by them. This problem has similarities with the syndrome called "decline of neem", reported in Africa.

    doi: 10.4336/2011.pfb.31.65.69

    Este é o primeiro registro do ataque de besouros (Curculionidae, Scolitinae, no Brasil, causando danos em plantios de nim, entre 7 e 10 anos, em Brejinho de Nazaré, Tocantins, constado em junho de 2009. Os insetos foram identificados como, Xylosandrus compactus (Eichhoff, Cryptocarenus diadematus Eggers, 1937 e Hypothenemus sp. Westwood, 1836. Os plantios atacados apresentavam crescimento abaixo do esperado para a região, baixa produção de sementes, desfolhamento acentuado e rebrota intensa nos ramos, seguida por morte de brotos jovens e/ou do ápice do ramo. A ação dos insetos provocou pontos de exsudação intensa de goma nos orifícios provocados. O fato tem similaridade com a síndrome denominada “declínio do nim”, relatada na África.

    doi: 10.4336/2011.pfb.31.65.69

  18. Technology Drives Vegetable Industry

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    @@ Arobot for vegetable planting is able to examine growing conditions, detect disease of the vegetables and pick up the ripe ones through identifying the color; a tomato tree is able to produce up to 3,000kgs of tomatoes; sweet potatoes are growing in the air; fish and vegeta-bles are living together harmoniously...Viewing these, you may doubt that you were in a fancy world.Actually, you are here at the 12th China (Shouguang) International Vegetable Sci-tech Fair.

  19. Irradiation of dehydrated vegetables

    International Nuclear Information System (INIS)

    The reason for radurization was to decreased the microbial count of dehydrated vegetables. The average absorbed irradiation dose range between 2kGy and 15kGy. The product catagories include a) Green vegetables b) White vegetables c) Powders of a) and b). The microbiological aspects were: Declining curves for the different products of T.P.C., Coliforms, E. Coli, Stap. areus, Yeast + Mold at different doses. The organoleptical aspects were: change in taste, flavour, texture, colour and moisture. The aim is the marketing of irradiated dehydrated vegetables national and international basis

  20. Citotoxicidade e genotoxicidade da água do rio Subaé (Humildes, Bahia, Brasil usando Allium cepa L. como bioindicador

    Directory of Open Access Journals (Sweden)

    Jacqueline Ramos Machado Braga

    2015-01-01

    Full Text Available Ao longo dos anos, o rio Subaé na Bahia tem sido impactado por atividade industrial pelo lançamento de efluentes tóxicos em suas águas. O presente estudo analisou os efeitos citotóxicos e genotóxicos provocados pela água do trecho deste rio que banha o município de Humildes-BA, utilizando o teste do Allium cepa. Amostras de água foram obtidas em três pontos de coleta (PI, PII e PIII para as análises de parâmetros fisico-químicos. Bulbos de A. cepa foram colocados por 72 h para germinação nas amostras de água em triplicata. As radículas foram submetidas por 12-h a 4 oC, fixadas em Carnoy por 12-h e coradas com técnica de Feulgen. Foram analisadas 6.500 células/tratamento. A citotoxicidade foi avaliada pelo índice mitótico (IM e a genotoxicidade, por anormalidades cromossômicas (AC. Os testes fisico-químicos revelaram que PI e PIII apresentavam valores de OD, DBO5 e DQO alterados. O teste de toxicidade indicou que houve inibição do crescimento das raízes nos pontos PI (10,3 % e PII (10,6 %, quando comparados ao controle negativo (11,9 %. No PI, foram encontrados 6,2 % de ACs, 6 % em PII e 5,4 % em PIII, valores acima do controle positivo (3 %, evidenciando o efeito genotóxico nos pontos estudados. A partir dos resultados, pode-se inferir que as águas do Rio Subaé podem conter substâncias que provavelmente estão afetando o ciclo celular do A. cepa, sendo importante que outras análises sejam realizadas em diferentes estações do ano, para melhor monitoramento das condições ambientais locais.

  1. Vegetable species for phytoextraction of boron, copper, lead, manganese and zinc from contaminated soil Espécies vegetais na fitoextração de boro, cobre, chumbo, manganês e zinco de solo contaminado

    Directory of Open Access Journals (Sweden)

    Gláucia Cecília Gabrielli dos Santos

    2010-12-01

    Full Text Available Phytoremediation is an attractive option to remove metal from contaminated soil since it is a simple, low-cost, and environmentally friendly procedure. To better examine the phytoremediation potential of kenaf (Hybiscus canabinnus, mustard (Brassica juncea, turnip (Raphunus sativus and amaranth (Amaranthus crentus plants, a greenhouse experiment was performed in which these species were grown on a soil contaminated with Zn, Cu, Mn, Pb and B. The translocation, the bioconcentration and the removal index, the transference factor and the time to reach 50% of element removal from soil, among other indicators, were used in order to identify a hyperaccumulator. Kenaf plants were more tolerant to the conditions tested, with the highest dry matter production and no visual toxicity symptoms. Amaranth would be the species chosen to remediate the soil under field conditions as it presented the higher indexes for decontamination of Zn and Mn and was also able to remove B. Turnip showed the best results for Pb removal. All species tested were able to remove B from soil. In spite, none of the plant species tested could be characterized as a hyperaccumulator.A fitorremediação é uma opção atraente na remoção de solos contaminados com metais por ser uma técnica simples, de baixo custo e ambientalmente aceitável. O potencial de fitorremediação da kenaf (Hybiscus canabinnus, mostarda (Brassica juncea, rabanete (Raphunus sativus and amaranto (Amaranthus crentus foram examinadas num experimento usando solo contaminado por Zn, Cu, Mn, Pb e B. O experimento foi conduzido em vasos, cultivando as quatro espécies até o florescimento. Os índices de translocação, bioconcentração e remoção, o fator de transferência e o tempo necessário para atingir a remoção de 50% do elemento do solo, entre outros indicadores, foram empregados na tentativa de identificar uma espécie hiperacumuladora. A kenaf foi a espécie mais tolerante nas condições empregadas

  2. Avaliação da fixação biológica de nitrogênio em feijão-caupi submetido a diferentes manejos da vegetação natural na savana de Roraima = Evaluation of the biological nitrogen fixation in cowpea subjected to different managements of the natural vegetation of the savanna in Roraima, Brazil.

    Directory of Open Access Journals (Sweden)

    Victorio Jacob Bastos

    2012-08-01

    Full Text Available Objetivou-se com este trabalho avaliar a fixação biológica de nitrogênio em feijão-caupi submetido a diferentes manejos da vegetação natural, com e sem adubação orgânica com esterco bovino, da savana de Roraima. O experimento foi instalado na área experimental do CCA/UFRR, em Boa Vista, Roraima. O plantio das sementes de feijão-caupi, cultivar BRS Aracê, inoculadas com Bradyrhizobium BR 3262, foi realizado em julho de 2011 e os tratamentos foram dispostos em umdelineamento experimental de blocos ao acaso em esquema fatorial (3 x 2 com quatro repetições. O primeiro fator correspondeu ao manejo da vegetação natural: com aplicação de glifosato, com corte da vegetação natural e sem corte da vegetação natural. O segundo fator correspondeu à aplicação de esterco bovino: com e sem aplicação. Aos 35 dias após o plantio foi efetuada a coleta das plantas de feijão-caupi para mensurar o número de nódulos; massa fresca e seca dos nódulos; altura da planta; número de folhas, massa fresca e seca da parte aérea; massa fresca e seca da raiz. A aplicação a lanço de esterco bovino na quantidade de 2,0 L m-2 sobre a vegetação natural da savana de Roraima favorece o aumento do número de nódulos por planta de feijão-caupi.O manejo da vegetação natural com o uso do glifosato, independentemente do uso do esterco, favorece a nodulação das raízese contribui com o maior crescimento e desenvolvimento da planta de feijão-caupi.This study evaluated the biological fixation of nitrogen in cowpea beans subjected to different managements of the natural vegetation of the savannah in Roraima. The experiment was done in the experimental area of the CCA/UFRR, Boa Vista, Roraima, Brazil. The planting of the BRS Aracê cowpea seeds, inoculated with Bradyrhizobium BR 3262, wasdone in July, 2011 and the treatments were arranged in factorial schemes (3 x 2 of experimental randomized blocks with fourrepetitions. The first factor was the

  3. Hortaliças in natura ou minimamente processadas em unidades de alimentação e nutrição: quais aspectos devem ser considerados na sua aquisição? Fresh or minimally processed vegetables in foodservices: what aspects should be considered when purchasing them?

    Directory of Open Access Journals (Sweden)

    Gabriel Carvalho Degiovanni

    2010-10-01

    Full Text Available Objetivo O objetivo do estudo foi avaliar as perdas ocorridas no processamento de hortaliças in natura, comparar o custo da aquisição de hortaliças in natura e das minimamente processadas e discutir as vantagens e desvantagens da utilização destas últimas. Métodos Foram calculados fatores de correção de sete hortaliças por meio da determinação do peso bruto e do peso líquido em triplicata e o peso aferido por balança digital. Foram calculados média, desvio-padrão e coeficiente de variação. Os custos do peso bruto, considerando a correção pelo seu rendimento líquido, foram comparados aos custos das hortaliças minimamente processadas fornecidos pelo fabricante em dois períodos. Resultados Os valores da abobrinha, cenoura, chuchu e mandioquinha minimamente processados foram, respectivamente, 8,6%, 14,1%, 4,6% e 13,5% menores em relação ao custo do alimento bruto no tempo 1, mas isso não se repetiu no tempo 2, quando os alimentos in natura apresentavam menor custo. Conclusão Conclui-se que inúmeros fatores inerentes ou externos aos alimentos influenciam diretamente na magnitude das perdas durante o processamento. Os métodos de trabalho e objetivos finais de cada unidade produtora é que devem definir qual produto é o mais vantajoso, considerando que os custos são variáveis, uma vez que a produção pode ser comprometida pela sazonalidade e pela oferta e procura dos alimentos, com repercussão na gestão de qualidade da unidade.Objective The objective of the present study was to assess the losses that occur when fresh vegetables are processed, to compare the cost of purchasing fresh and minimally processed vegetables, and to discuss the advantages and disadvantages of using minimally processed food items. Methods Correction factors for seven food items were calculated by determining their gross and net weights in triplicate with a digital scale. Mean, standard deviation and variation coefficient were calculated. The

  4. Métodos e estratégias em proteômica e suas aplicações na área vegetal Methods and strategies in proteomics and their applications in plants

    Directory of Open Access Journals (Sweden)

    Fernanda Salvato

    2010-03-01

    Full Text Available A implementação da espectrometria de massa (MS para as análises de peptídeos (MS e de aminoácidos (MS em tandem ou MS/MS tornou possível a identificação de centenas de proteínas em experimentos únicos. Uma grande variedade de estratégias está disponível atualmente para o fracionamento e a purificação de amostras, a identificação de proteínas, a quantificação, a análise de modificações pós-traducionais (MPT's e os estudos de interação. Dessa forma, a proteômica abre novas perspectivas na biologia de plantas com ênfase nos estudos de variabilidade genética, estresses fisiológicos e desenvolvimento de plantas.The implementation of mass spectrometry (MS for peptides (MS and amino acids (tandem MS or MS/MS analysis allowed the identification of hundreds of proteins in single experiments. A number of different strategies are current available for sample fractioning and purification, proteins identification, quantification, post-translational modifications (PTM and interaction analyses. In this way, the proteomics open up new perspectives in plant biology with emphasis on studies of genetic variability, physiological stresses and plant development.

  5. Soil and vegetation surveillance

    Energy Technology Data Exchange (ETDEWEB)

    Antonio, E.J.

    1995-06-01

    Soil sampling and analysis evaluates long-term contamination trends and monitors environmental radionuclide inventories. This section of the 1994 Hanford Site Environmental Report summarizes the soil and vegetation surveillance programs which were conducted during 1994. Vegetation surveillance is conducted offsite to monitor atmospheric deposition of radioactive materials in areas not under cultivation and onsite at locations adjacent to potential sources of radioactivity.

  6. Curtimento de peles de peixe com taninos vegetal e sintético = Tanning fish skins using vegetable and synthetic tannins

    OpenAIRE

    Ariana Martins Vieira; Yslene Rocha Kachba; Maria Luiza Rodrigues de Souza Franco; Karla Fabrícia de Oliveira; Leandro Cesar de Godoy; Eliane Gasparino

    2008-01-01

    No presente experimento objetivou-se avaliar a resistência das peles de peixes submetidas ao curtimento com taninos vegetal e sintético. As peles foram distribuídas em um delineamento inteiramente casualizado, com seis tratamentos aplicados na etapa decurtimento (T1 = 10% tanino vegetal; T2=10% tanino sintético; T3 = 5% tanino vegetal + 5% sintético; T4 = 12% tanino vegetal; T5 = 12% tanino sintético; T6 = 6% tanino vegetal + 6% sintético) e dez repetições por tratamento, sendo o couro a unid...

  7. Escoamento superficial na interação: cobertura vegetal e práticas de controle de erosão Erosion losses from runoff: interaction of soil cover and erosion control practice

    Directory of Open Access Journals (Sweden)

    Marco A. R. de Carvalho

    2012-12-01

    Full Text Available O escoamento da água oriunda das terras agricultadas é o principal fator poluente dos mananciais hídricos nas áreas rurais. Devido a esse fato, faz-se necessário o desenvolvimento e a aplicação de tecnologias que venham a reduzir descargas de resíduos indesejáveis. Nesse sentido, conduziu-se um experimento na área experimental do Departamento de Engenharia Rural - ESALQ/USP, Piracicaba - SP, com o objetivo de avaliar o efeito de diferentes condições de solo, (feijão, gramínea e solo nu e diferentes práticas de controle de erosão (sulco de infiltração, terraço de infiltração e sem práticas de controle de erosão, buscando-se estimar o escoamento superficial. O delineamento estatístico adotado foi o em blocos aleatorizados, em esquema fatorial 3x3, perfazendo 9 tratamentos com 3 repetições. O período de coleta de dados pluviométricos foi de 06 de dezembro de 2007 a 11 de abril de 2008; para isto, utilizou-se de um pluviômetro, com 21,1 cm de diâmetro, instalado na área experimental. Observando-se as perdas de água, em relação às estruturas, tem-se em ordem decrescente de eficiência: Terraço, Sulco e Rampa; e com relação às coberturas, tem-se em ordem decrescente de eficiência: Feijão, Capim e Solo Nu.The flow of sediment from cropped land is the main pollutant of water sources in rural areas. Due to this fact, it is necessary to develop and implement technologies that will reduce water and sediment discharges. Accordingly, an experiment was conducted in the Department of Biosystems Engineering - ESALQ / USP, Piracicaba - SP with the objective to evaluate the effect of different soil cover (bean, grass and bare ground and erosion control practices (wide base terraces and infiltration furrows in slopes (no practices to control erosion while measuring water losses in runoff. The statistical design adopted was randomized blocks in a 3x3 factorial scheme resulting in 9 treatments with 3 replicates (blocks. The

  8. The influence of fire regime on microscale structural variation and patchiness in Cerrado vegetation. A influência do regime de fogo na variação estrutural em microescala e o mosaico da vegetação de Cerrado.

    Directory of Open Access Journals (Sweden)

    Giselda DURIGAN

    2010-06-01

    Full Text Available O fogo é um dos principais condicionantes do mosaico fisionômico da vegetação do Cerrado, em diferentes escalas. O objetivo do presente estudo foi explorar o mosaico estrutural da vegetação do Cerrado em microescala, em áreas com diferentes regimes de fogo, no mosaico formado pelas unidades de conservação Estação Ecológica e Floresta Estadual de Assis, SP. Analisamos a vegetação em quatrotransectos com 80 m de extensão, divididos em 20 subamostras de 4 m de comprimento. Para estimar a cobertura de todas as espécies do estrato herbáceo, utilizamos o método de intercepção de linhas em três diferentes faixas de altura: 0-50 cm, 50-100 cm e 100-150 cm. Medimos e identificamos todas as árvores e arbustos presentes nas subparcelas de 4 m x 4 m e coletamos amostras de solo compostas em cada transecto para caracterização ambiental. Comparamos os valores médios de cobertura e densidade da vegetação nos diferentes estratose efetuamos análises multivariadas para explicar as diferenças florísticas entre as comunidades. Os resultados indicam que o fogo induz aumento na heterogeneidade, especialmente nos estratos inferiores da vegetação. No entanto, não há diferenciação florística que possaser explicada pelos diferentes regimes de incêndios ou diferenças edáficas. Palavras chave: savana; influência do fogo; estrutura da comunidade;mosaico vegetacional.Fire can produce a hierarchical pattern of vegetation patchiness, from the large, landscape scale to the microscale, the dynamic nature of which changes over time. The aim of this study was to explore the microscale structural patchiness of Brazilian savanna vegetation (cerrado in areas with different fire regimes at the mosaic formed by Assis Ecological Station, and Assis State Forest,SãoPauloState.Vegetation was analysed in 80 m transects divided into twenty 4 m length plots that were established in four areas of savanna. The line-intercept method was used to estimate

  9. Plant density and levels of NPK on the production components of vegetable soybean in the Savannah of the state of Roraima=Densidade de plantas e doses de NPK nos componentes de produção de soja-hortaliça na Savana de Roraima

    Directory of Open Access Journals (Sweden)

    Alynny Neftaly Lopes Monteiro

    2016-02-01

    Full Text Available The aim of this study was to evaluate the effect of two sowing densities and levels of NPK (02-24- 12 on the production components of the JLM 08 strain of vegetable soybean, in the Savannah of Boa Vista, in the state of Roraima, Brazil. The experiment was carried out from November 2013 to March 2014 in the experimental area of the Centre for Agrarian Sciences at the Cauamé Campus of the Federal University of Roraima in Boa Vista. The experimental design was of randomised blocks in a factorial scheme (2 x 5 with three replications. The two densities (40,000 and 80,000 plants per hectare comprised the first factor, while five levels of NPK (02-24-12 made up the second (0, 200, 400, 600 and 800 kg ha-1. The following were evaluated: height of insertion of the first and last pod; stem diameter; number of pods per plant having 1, 2, and 3 grains; total number of pods per plant; 100 grain weight and estimated grain yield. The height of insertion of the first and last pod in the JLM 08 genotype of the vegetable soybean is not influenced by the planting densities or levels of formulated fertiliser. At a density of 80,000 plants per hectare, the number of pods per plant is influenced by the levels of fertiliser, demonstrating a positive quadratic response. The level of fertiliser with the maximum technical efficiency (492.86 kg ha-1 gives an 18% increase in grain yield at the highest planting density. = Objetivou-se com este trabalho avaliar o efeito de duas densidades de semeadura e doses de NPK (02-24-12 nos componentes de produção da soja hortaliça linhagem JLM 08, na Savana de Boa Vista, Roraima. O experimento foi conduzido no período de novembro de 2013 a março de 2014, na área experimental do Centro de Ciências Agrária da Universidade Federal de Roraima, Campus Cauamé, em Boa Vista, Roraima. O delineamento experimental adotado foi em blocos ao acaso, em esquema fatorial (2 x 5, com três repetições. O primeiro fator correspondeu a duas

  10. The role of behavior in the survival of Biomphalaria glabrata in biossays with the plant molluscicide Phytolacca dodecandra O papel do comportamento na sobrevivência de Biomphalaria glabrata submetida a bioensaios com o moluscicida vegetal Phytolacca dodecandra

    Directory of Open Access Journals (Sweden)

    P. Jurberg

    1988-03-01

    Full Text Available This work examines the role of behavior in the survival of Biomphalaria glabrata exposed to 25, 50 75 and 100 mgl-1 of Phytolacca dodecandra. Time-lapse cinematography was used to quantify accurately the following parameters: (a frequency of exits from the solution, (b time spent out of the solution and (c time elapsed until the first exit from the solution. These behavior patterns were statistically compared between surviving snails and those which later died. The proportion of surviving snails leaving the liquid medium was significantly higher than that of dying snails. In addition, the surviving group spent significantly more time out of the solution than the group which died, except for the 100 mgl-1 concentration. However, no significant difference was detected in the time elapsed until the first exit from the solution. It can be concluded that both the tendency to leave the P. dodecandra solutions, and the time spent out of them, contributed significantly to snail survival. Molluscicide bioassays should take into account the possibility that some behavior patterns of planorbids might contribute to the protection of the snails.Este trabalho investiga o papel do comportamento na sobrevivência de Biomphalaria glabarta exposta a 25, 50, 75 e 100 mgI-1 de Phytolacca dodecandra. Foi utilizada a técnica de cinematografia com lapso de tempo para quantificar acuradamente os seguintes parâmetros (a freqüência de saídas da solução, (b tempo de permanência fora da solução e (e tempo decorrido até a primeira saída da soluçao. Estes padrões comportamentais foram estatisticamente comparados no que se refere aos caramujos sobreviventes e aos que vieram a morrer. Dentre os camundongos que abandonaram o meio líquido, a proporção de sobreviventes foi significativamente maior que a de mortos. Além disso, um tempo significativamente maior de permanência fora da solução foi observado no grupo que sobreviveu, em relação ao grupo que veio

  11. Efeito da aplicação de extratos aquosos em couve na alimentação de largatas de Ascia monuste orseis Effect of aqueous vegetal extratcts application on larva feeding behavior of Ascia monuste orseis at kale

    Directory of Open Access Journals (Sweden)

    Cesar Augusto Manfré Medeiros

    2005-01-01

    Full Text Available Os efeitos de extratos aquosos de amêndoas de Azadirachta indica e frutos de Sapindus saponaria, aplicados em discos de folhas de couve (Brassica oleracea var. acephala nas concentrações de 0,0117% e 1,0342% (p/v, respectivamente, foram estudados sobre a alimentação das lagartas de Ascia monuste orseis. Avaliou-se a atratividade e o consumo de área foliar de lagartas de primeiro e terceiro ínstar durante 24 horas, em condições de laboratório (T = 25 ± 2ºC, UR = 60 ± 10% e fotofase = 12 horas. Nos testes com e sem chance de escolha, para lagartas de primeiro ínstar e teste sem chance de escolha para lagartas de terceiro ínstar, não houve diferença quanto à atratividade das lagartas. No teste com chance de escolha para lagartas de terceiro ínstar, houve menor atratividade das lagartas pelos discos de folhas tratadas com S. saponaria, diferindo da testemunha. No decorrer de 24 horas de avaliações, pode-se observar 58,3% de lagartas atraídas na testemunha, não diferindo de A. indica e diferindo de S. saponaria, com 39,3% e 2,4% das lagartas atraídas, respectivamente. Quanto ao consumo de área foliar, o extrato de S. saponaria diminuiu o consumo de lagartas, em todos os testes realizados. Quando não tinham opção de escolha para se alimentar de folhas sem os extratos, as lagartas consumiram as folhas tratadas nas concentrações testadas, porém em menor quantidade. Os extratos testados neste experimento demonstram ter efeitos sobre a alimentação das lagartas de A. monuste orseis, possivelmente com propriedades deterrentes e/ou supressoras de alimentação.The effects of aqueous extracts of Azadirachta indica almonds and of Sapindus saponaria fruits, applied on disks of kale leaves (Brassica oleracea var. acephala at concentrations of 0.0117% and 1.0342% (w/v, respectively, were studied on larval feeding behavior of Ascia monuste orseis. Data on leaves attractiveness and consumption at first and third larval instar were

  12. Vegetable Production System (Veggie)

    Science.gov (United States)

    Levine, Howard G.; Smith, Trent M.

    2016-01-01

    The Vegetable Production System (Veggie) was developed by Orbital Technologies Corp. to be a simple, easily stowed, and high growth volume yet low resource facility capable of producing fresh vegetables on the International Space Station (ISS). In addition to growing vegetables in space, Veggie can support a variety of experiments designed to determine how plants respond to microgravity, provide real-time psychological benefits for the crew, and conduct outreach activities. Currently, Veggie provides the largest volume available for plant growth on the ISS.

  13. Modelo sistêmico de ocorrência de ações coletivas: um estudo multicaso na comercialização de frutas, legumes e verduras Cooperation in marketing channels: a multicase study on fresh fruit and vegetable marketing

    Directory of Open Access Journals (Sweden)

    Andrea Lago da Silva

    2011-01-01

    Full Text Available A cooperação desempenha um papel de grande relevância para a participação competitiva de indivíduos e empresas na atividade econômica, especialmente nas condições de um ambiente dinâmico e cercado de incertezas, como é o caso do setor de FLV. Assim, o principal objetivo dessa pesquisa foi elaborar um modelo sistêmico capaz de demonstrar as relações causais (interdependências entre as variáveis de ocorrência da cooperação. Com base na confrontação teoria-pesquisa empírica, foram analisados os relacionamentos interorganizacionais horizontais e verticais a partir da análise de dez estudos de caso realizados em cinco regiões brasileiras. A partir dessa análise, foi possível elaborar um modelo sistêmico que demonstrava a existência de relações causais entre as variáveis de ocorrências da cooperação. Sob o ponto de vista sistêmico, na medida em que as variáveis estão inter-relacionadas, interferências externas ou decisões dos agentes resultam em ajustes em todo o sistema. Assim, há uma importante oportunidade para ações de políticas públicas e estratégias privadas visando à utilização de sistemas de comercialização inovadores.Cooperation plays an important role in the competitive participation of individuals and firms in the economic activity, especially in dynamic and uncertain environments such as the Fresh Fruit and Vegetable (FFV market in Brazil. Therefore, the main objective of this research was to develop a systemic model able to demonstrate causal interdependencies between cooperation occurrence variables. The systemic model revealed several collective action occurrence variables as well their interdependencies, identified in the literature and in the empirical study. From a systemic point of view, depending on how they are interrelated, changes in the variables or in the agents behaviour can lead to adjustments in the system. Thus, since the variables are dynamic, external interferences or

  14. Description of vegetation types

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document provides descriptions of five vegetation types found in Iowa- oak savannah, mature hardwoods, floodplain woods, scrub woods, and riparian woods. Oak...

  15. Coma / Vegetative State

    Science.gov (United States)

    ... Employment & Training Physical Symptoms of Brain Injury Thinking / Cognitive Symptoms Brain Injury Symptoms Family Concerns Policy Vision ... vegetative state include: Return of a sleep-wake cycle with periods of eye opening and eye closing ...

  16. Vegetation survey of Sengwa

    Directory of Open Access Journals (Sweden)

    G. C. Craig

    1983-12-01

    Full Text Available The approach and initial results of a vegetation survey of the Sengwa Wildlife Area are outlined. The objectives were to produce a vegetation classification and map sufficiently detailed to serve as a base for the management of the natural vegetation. The methods adopted consist of (a stratification of the area into homogeneous units using 1:10 000 colour aerial photographs; (b plotless random sampling of each stratum by recording cover abundance on the Braun-Blaunquet scale for all woody species; and (c analysis of the data by indicator species analysis using the computer programme 'Twinspan’. The classification produced is successful in achieving recognizable vegetation types which tie in well with known environmental features.

  17. Diâmetro de estacas e substratos na propagação vegetativa de maniçoba, Manihot glaziovii Muell. Arg Diameter of cuttings and substrates in the vegetative propagation of maniçoba Manihot glaziovii Muell. Arg

    Directory of Open Access Journals (Sweden)

    Leonardo Elias Ferreira

    2010-09-01

    Full Text Available Objetivou-se com este trabalho estudar a influência do diâmetro das estacas e dos substratos na propagação vegetativa de maniçoba, Manihot glaziovii Muell. Arg. Utilizou-se o delineamento em blocos casualizados em esquema fatorial 10 x 3, sendo 10 substratos e 3 diâmetros de estacas, totalizando 30 tratamentos, oriundos das combinações entre substratos e diâmetros de estacas, com 4 repetições e 8 estacas por parcela. Os diâmetros das estacas corresponderam a: 0,5 a 1,0 cm (D1; 1,1 a 2,0 cm (D2 e 2,1 a 3,0 cm (D3. Foram utilizados 10 substratos: terra (S1; areia (S2; terra+areia: 1:1 (S3; terra+areia: 2:1 (S4; terra+areia: 1:2 (S5; terra+esterco: 1:1 (S6; areia+esterco: 1:1 (S7; terra+esterco: 2:1 (S8; areia+esterco: 2:1 (S9 e terra+areia+esterco: 1:1:1 (S10. As estacas lenhosas foram retiradas de plantas matrizes em repouso vegetativo, com comprimento de 25 cm e base cortada em bisel. Avaliou-se: percentual de estacas enraizadas; número de raízes; número de brotações; diâmetro e comprimento das brotações; número de folhas; massa seca das brotações e massa seca das raízes, obtidos aos 70 dias após instalação do experimento. Os melhores resultados para todas as variáveis estudadas foram obtidos com estacas de diâmetros entre 1,1 a 2,0 cm e entre 2,1 a 3,0 cm, com substratos que incluíram areia + esterco na sua composição. Tais tratamentos proporcionaram percentagens de enraizamento da ordem de 70 a 80%.This study aims to evaluate substrates and cuttings diameter influence in the vegetative propagation of Manihot glaziovii Muell.Arg. A design in randomized blocks using a 10 x 3 factorial scheme was used, being 10 substrates and 3 cuttings diameter, totaling 30 treatments, from the combinations between substrates and cuttings diameter, with 4 replications and 8 cuttings per plot. Diameters corresponded: 0.5 to 1.0 cm (D1; 1.1 to 2.0 cm (D2 and 2.1 to 3.0 cm (D3. Substrates used were: soil (S1; sand (S2; soil + sand: 1

  18. Determinação do período mais propício às ocorrências de incêndios em vegetação na área urbana de Juiz de Fora, MG Determination of the most favorable period for the occurrences of vegetation fires in the urban area of Juiz de Fora, MG

    Directory of Open Access Journals (Sweden)

    Fillipe Tamiozzo Pereira Torres

    2010-04-01

    Full Text Available Os incêndios em vegetação podem provocar severos danos ao ambiente, além de consequências econômicas consideráveis, como a destruição de hábitats, a queima de madeira e os custos para o seu combate. Para estabelecer políticas de controle e prevenção, faz-se necessário conhecer o perfil dos incêndios. As estatísticas de ocorrência dos incêndios em vegetação são as principais ferramentas para se traçar seu perfil. Com esses dados, pode-se planejar o controle de modo mais eficiente, diminuindo gastos, tempo e riscos em seu combate. O objetivo deste estudo visou à determinação da época do ano e horário de maiores ocorrências de incêndios em vegetação no Município de Juiz de Fora, MG. Para isso, foi utilizada uma série temporal de 10 anos (1995 -2004, com dados de ocorrências de incêndios e elementos climáticos na área urbana do município. De acordo com os resultados, foi caracterizado o período de junho a outubro como a estação normal do fogo. Em relação às horas do dia, o período das 10 às 20 h foi o que concentrou o maior número de ocorrências, tendo seu pico entre 15 e 16 h.Vegetation fires can provoke severe damage to the environment as well as considerable economic consequences, such as the destruction of habitats, the burning of wood and costs for combating them. To establish politics for control and prevention, it is necessary to know the profile of fire. The statistics of occurrence of vegetation fires are the main tools to draw your profile. With this data, we can plan to control them more efficiently by reducing costs, time and risk in their combat. The objective of this study seeks to determine the period of the year and schedule of larger occurrences of vegetation fires in the city of Juiz de Fora (MG. For that a 10 year temporary series was used (1995 - 2004 with data of occurrences of fires and climatic elements in the city. According to the results, the period from June to October as the

  19. Balanço e análise da sustentabilidade energética na produção orgânica de hortaliças Energetic balance and sustainability analysis in the organic production of vegetable crops

    Directory of Open Access Journals (Sweden)

    Jacimar Luiz de Souza

    2008-12-01

    Full Text Available Os insumos e serviços utilizados na produção vegetal representam custo energético. Dependendo desses fatores e das produtividades obtidas, a conversão da produção em energia determinará a eficiência energética do sistema. A agricultura orgânica somente atingirá a missão de preservação ambiental se tiver comprovada sustentabilidade energética. Neste trabalho, objetivou-se caracterizar os balanços energéticos dos cultivos orgânicos e analisar sua sustentabilidade, em comparação aos sistemas convencionais. Monitoraram-se campos de produção de dez culturas, de 1991 a 2000 em Domingos Martins-ES. Os dados do sistema convencional foram obtidos pelas médias dos coeficientes técnicos da região. Quantificaram-se os coeficientes técnicos, convertendo suas grandezas físicas em equivalentes energéticos, expressos em kcal. O sistema orgânico gastou 4.571.159 kcal ha-1 e apresentou 12.696.712 kcal ha-1 de energia inserida na colheita, mostrando balanço médio de 2,78. Esse valor foi similar ao obtido no sistema convencional (1,93. As participações dos componentes nos gastos do sistema orgânico foram embalagem (35,8%, composto orgânico (17,2%, irrigação (12,6%, sementes/mudas (12,4% e mão-de-obra (11,0%, serviços mecânicos (5,0% e frete (4,5%. Se os custos com embalagens fossem eliminados, os gastos do sistema orgânico seriam reduzidos para 2.930.113 kcal ha-1, aumentando sua eficiência. A maioria dos cultivos orgânicos pode ser considerada sustentável em transformação de energia, com balanços superiores a 1,00 e produção média diária de 80.421 kcal ha-1 por dia, superior à necessidade mínima de 58.064 kcal ha-1.The inputs used in crop production represent an energetic cost. Depending on the inputs and on the achieved yields, the conversion of the harvest into energy will determine the energetic efficiency of the system. Organic agriculture will fully meet the goal of environmental conservation only if its

  20. Biomassa microbiana e atividade enzimática em solos sob vegetação nativa e sistemas agrícolas anuais e perenes na região de Primavera do Leste (MT Microbial biomass and enzyme activities in soils under native vegetation and under annual and perennial cropping systems at the Primavera do Leste region - Mato Grosso State

    Directory of Open Access Journals (Sweden)

    M. Matsuoka

    2003-06-01

    Full Text Available Primavera do Leste é um dos pólos de produção de grãos e fibras do Mato Grosso, com lavouras altamente tecnificadas. Este estudo foi realizado num Latossolo Vermelho-Amarelo da região de Primavera, com objetivo de avaliar a biomassa e a atividade microbiana de solos sob vegetação nativa e sistemas agrícolas anuais e perenes. As amostras de solo foram coletadas em duas profundidades (0-5 e 5-20 cm, no início da estação chuvosa, em áreas sob cultivo de videira (Vitis vinifera, entrelinha e linha, cultivos anuais (soja e em uma área de vegetação nativa de Cerradão. Foram avaliados o carbono da biomassa microbiana (CBM, carbono prontamente mineralizável e as atividades das enzimas beta-glucosidase, fosfatase ácida e arilsulfatase. Nas duas profundidades avaliadas, os sistemas de uso do solo com culturas perenes e anuais apresentaram reduções médias de 70 % no CBM, em relação à área sob vegetação nativa. O manejo diferenciado na entrelinha do parreiral e a utilização do capim-pé-de-galinha (Eleusine indica, como cobertura viva, proporcionaram aumentos no C mineralizável e na atividade das enzimas beta-glucosidase e arilsulfatase nas duas profundidades. Os níveis médios de P no solo sob Cerradão resultaram em valores de atividade da fosfatase ácida inferiores aos dos observados em outros locais do Cerrado. Mesmo assim, na profundidade de 0-5 cm, a atividade da fosfatase ácida no Cerradão foi superior à da entrelinha do parreiral (VE e à da área com culturas anuais, demonstrando a sua importância na mineralização do fósforo orgânico em áreas sob vegetação nativa. Os resultados obtidos confirmaram a sensibilidade dos parâmetros microbiológicos e bioquímicos para identificar alterações no solo de acordo com os diferentes sistemas de uso da terra.Primavera do Leste is one of the most important farming areas of Mato Grosso State. This study was carried out in a Red-Yellow Latosol to evaluate the

  1. The Vegetables Turned:

    DEFF Research Database (Denmark)

    Carter, Dale

    2009-01-01

    lyricist Van Dyke Parks, the incongruous, semantically complex figure of the vegetable came to illuminate aspects of psychedelic consciousness and - part by design, part by accident - the link between LSD and Anglo-American popular music. It threw light, too, on the scope and limits of changes...

  2. Spatial Vegetation Data for Acadia National Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The U.S. Geological Survey (USGS) Upper Midwest Environmental Sciences Center (UMESC) has produced the Vegetation Spatial Database Coverage (vegetation map) for the...

  3. Uso de cobertura morta vegetal no controle da umidade e temperatura do solo, na incidência de plantas invasoras e na produção da cenoura em cultivo de verão Efficiency of mulching on soil moisture and temperature, weed control and yield of carrot in summer season

    Directory of Open Access Journals (Sweden)

    Francisco Vilela Resende

    2005-02-01

    Full Text Available Avaliaram-se os efeitos de diferentes tipos de cobertura morta de solo de origem vegetal sobre o crescimento, controle de plantas daninhas, produtividade e regime hidrotérmico do solo no cultivo da cenoura, cultivar Brasília, em um experimento conduzido no período de setembro a dezembro de 1998, em Marília, SP. O delineamento experimental utilizado foi o de blocos casualizados, com cinco tratamentos e quatro repetições em parcelas de 2 m². Estudou-se os seguintes tipos de cobertura: serragem de madeira, casca de arroz, maravalha (raspa de madeira, capim seco (Cynodon spp. e controle (solo sem cobertura morta. A utilização da cobertura morta de solo mostrou-se como uma prática vantajosa para o cultivo de verão da cenoura, reduziu a temperatura em até 3,5ºC, aumentou a retenção de umidade do solo em até 2,3% em relação ao controle e melhorou o desenvolvimento das plantas de cenoura. Houve menor incidência de plantas daninhas com o uso de maravalha e capim seco que, juntamente com a serragem também aumentaram o número de plantas colhidas. Entre os tipos de cobertura morta utilizados, a casca de arroz e a maravalha se destacaram em relação ao solo descoberto como os materiais que proporcionaram maior produtividade (112,6 e 99,6 t/ha respectivamente. O uso de cobertura morta de solo mostrou-se vantajoso em vários aspectos para cultura da cenoura, sendo técnica e economicamente viável, principalmente, em pequenas áreas e em cultivos orgânicos.The effects of different mulches were evalueted on carrot culture, cultivar Brasilia, in a experiment carried out at Marilia, São Paulo State, Brazil, from september to december/1998. The experimental design was a randomized block with four replications and size plots of 2 m². Wood dust, wood chips, dry grass (Cynodon spp., rice straw and control (soil without cover were tested and their effects on the soil hidrothermal regime, weed control, growth and yield of carrot were determined

  4. Review of Vegetable Market Development in China

    Institute of Scientific and Technical Information of China (English)

    Chaoping; LUO; Yuandong; NI; Qiong; ZHAI

    2013-01-01

    This paper has reviewed vegetable market development from vegetable circulation system, the develop history of the liberalize vegetable market and the growth of the vegetable wholesale market in China. From the development of vegetables market in China and its characteristics: the development of vegetable market in China is related to vegetable market system, the change of institution, some technology development and infrastructure. this paper has put forward some related measures to perfect the vegetable market and improve the vegetable circulation efficiency in China.

  5. Mini sensor Irrigas® na determinação da curva de retenção de água em substratos para hortaliças Mini Irrigas® sensor in determining the curve of water retention in substrates for vegetables

    Directory of Open Access Journals (Sweden)

    Ronaldo S de Liz

    2008-12-01

    Full Text Available No Brasil, ainda não existe um método padrão, confiável, para a determinação da curva de retenção de água em todos os tipos de substratos existentes para o cultivo de hortaliças, principalmente para substratos à base de fibras longas e curtas, como é o caso do substrato de coco verde. Assim, neste trabalho, o objetivo foi obter a curva de retenção de água em substratos para o cultivo de hortaliças, utilizando-se um mini sensor Irrigas®. Foram utilizados os substratos de coco verde, sem compostagem, compostado durante 45; 90; 135 e 180 dias e o substrato Plantmax®, utilizado como controle. O delineamento experimental foi de blocos ao acaso no esquema fatorial 6 x 11 (substrato x tensão com três repetições. Para o substrato S0; S45; S90; S135 e S180 as médias obtidas foram porosidade total: 85%; espaço de aeração: 72%; água facilmente disponível: 4%; água disponível: 9%; água tamponante: 5% e, água remanescente: 4%. O espaço de aeração (72%, foi indicativo de que é conveniente melhorar a distribuição do tamanho de partículas desse substrato, de modo a reduzir o espaço de aeração e aumentar a capacidade de retenção de água. O aumento da tensão de água foi obtido de forma natural, pela evaporação da água das amostras. A utilização do sensor Irrigas® permitiu rapidez na obtenção dos resultados e possibilitou a medição da tensão da água, de maneira contínua e paralela, entre tensões de 0 e 11 kPa, simultaneamente, em três amostras de substrato. Estes resultados tornaram evidente a possibilidade de uso do mini sensor Irrigas® na determinação de curvas de retenção de água em substratos para hortaliças, gerando inclusive perspectivas para a realização de estudos futuros de comparação com outros métodos.In Brazil, no reliable standard method exists to determine the water retention curve in all available types of substrates for the cultivation of vegetables, mainly for substrates

  6. NESDIS VIIRS Green Vegetation Fraction

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains weekly Green Vegetation Fraction (GVF) derived from VIIRS. The Green Vegetation Fraction product is updated daily and is used as an input to...

  7. Extensive vegetated roofs in Sweden

    OpenAIRE

    Emilsson, Tobias

    2006-01-01

    This thesis discusses extensive vegetated roofs, i.e. vegetation systems placed on top of buildings as an aesthetical and/or ecological cover. Specific objectives was to (1) quantify how establishment techniques, substrates and plant mixes influence establishment and development of extensive vegetated roofs, (2) investigate effect of vegetated roofs on stormwater quality, and quantify how maintenance and starting fertilisation influences stormwater quality, and (4) investigate the role of veg...

  8. Antioxidant properties of Brassica vegetables

    OpenAIRE

    Soengas Fernández, María del Pilar; Sotelo Pérez, Tamara; Velasco Pazos, Pablo; Cartea González, María Elena

    2011-01-01

    Brassica vegetables include some economically interesting crops such as cabbage, broccoli, cauliflower, Brussels sprouts, kale and turnip, which are consumed all over the world. A high intake of Brassica vegetables reduces the risk of age-related chronic illness such as cardiovascular health and other degenerative diseases and reduces the risk of several types of cancer, thanks in part to the antioxidant properties of different compounds. Compared to other vegetables, Brassica vegetables have...

  9. Hazard assessment of vegetated slopes

    NARCIS (Netherlands)

    J.E. Norris; J.R. Greenwood; A. Achim; B.A. Gardiner; B.C. Nicoll; E. Cammeraat; S.B. Mickovski

    2008-01-01

    The hazard assessment of vegetated slopes are reviewed and discussed in terms of the stability of the slope both with and without vegetation, soil erosion and the stability of the vegetated slope from windthrow and snow loading. Slope stability can be determined by using either limit equilibrium or

  10. Agronomic characteristics associated with vegetation index measured by active sensors of the canopy in soybeanCaracterísticas agronômicas associadas com índices de vegetação medidos por sensores ativos de dossel na cultura da soja

    Directory of Open Access Journals (Sweden)

    Edson Cristiano Groff

    2013-05-01

    Full Text Available Soybean has always stood out for its economic importance in the national agricultural scenario with an increase in its cultivation throughout the Brazilian territory. With the increasing use of precision agriculture (PA is of paramount importance to understand the variability of agronomic variables. Currently, spectral sensors in the ground-level have been used to establish relationships between spectral response and crop growth parameters. This is possible through the reading of vegetation indices such as Normalized Difference Vegetation Index using the green band (GNDVI. This study was conducted between October to 2008 and April to 2009, in Ponta Grossa – PR, with the objective of evaluating the spectral response of soybean through GNDVI and its correlation with some agronomic variables, such as: productivity of grain, productivity of dry mass, plant density and plant height. GNDVI readings were taken on six phenological stages using Crop Circle active optical sensor. Regression analyzes were used to determine which agronomic variables established relationship with the GNDVI. The GNDVI in soybean established significant correlations only with grain and MS productivity in EF V9. Thus, to establish the correlation of GNDVI with these variables it is recommended that the readings are carried out in this EF.A soja sempre se destacou pela sua importância econômica no cenário agrícola nacional tendo sido observado aumento do seu cultivo em todo o território brasileiro. Com o uso crescente da agricultura de precisão (AP é de suma importância entender a variabilidade das variáveis agronômicas. Atualmente, sensores espectrais em nível terrestre vêm sendo utilizados para estabelecer relações entre as respostas espectrais e parâmetros de crescimento da cultura. Isso é possível por meio da leitura dos índices de vegetação, como o Índice de Vegetação da Diferença Normalizada utilizando a banda verde (GNDVI. Este estudo foi

  11. Vegetable Transplant Production

    OpenAIRE

    Drost, Dan

    2015-01-01

    This fact sheet discusses what is needed to grow quality (compact, well rooted, healthy) transplants. It introduces things to consider when producing vegetable transplants. Transplants are commonly grown in greenhouses. Success depends on knowing the right conditions needed for the crop of interest so the plants are the correct size, are healthy, and capable of withstanding the transition from the greenhouse to the field. Briefly covered are: transplanting tray selection, transplant age and ...

  12. Nonlinearities in vegetation functioning

    Science.gov (United States)

    Ceballos-Núñez, Verónika; Müller, Markus; Metzler, Holger; Sierra, Carlos

    2016-04-01

    Given the current drastic changes in climate and atmospheric CO2 concentrations, and the role of vegetation in the global carbon cycle, there is increasing attention to the carbon allocation component in biosphere terrestrial models. Improving the representation of C allocation in models could be the key to having better predictions of the fate of C once it enters the vegetation and is partitioned to C pools of different residence times. C allocation has often been modeled using systems of ordinary differential equations, and it has been hypothesized that most models can be generalized with a specific form of a linear dynamical system. However, several studies have highlighted discrepancies between empirical observations and model predictions, attributing these differences to problems with model structure. Although efforts have been made to compare different models, the outcome of these qualitative assessments has been a conceptual categorization of them. In this contribution, we introduce a new effort to identify the main properties of groups of models by studying their mathematical structure. For this purpose, we performed a literature research of the relevant models of carbon allocation in vegetation and developed a database with their representation in symbolic mathematics. We used the Python package SymPy for symbolic mathematics as a common language and manipulated the models to calculate their Jacobian matrix at fixed points and their eigenvalues, among other mathematical analyses. Our preliminary results show a tendency of inverse proportionality between model complexity and size of time/space scale; complex interactions between the variables controlling carbon allocation in vegetation tend to operate at shorter time/space scales, and vice-versa. Most importantly, we found that although the linear structure is common, other structures with non-linearities have been also proposed. We, therefore, propose a new General Model that can accommodate these

  13. Fruit and vegetable allergy.

    Science.gov (United States)

    Fernández-Rivas, Montserrat

    2015-01-01

    Fruit and vegetable allergies are the most prevalent food allergies in adolescents and adults. The identification of the allergens involved and the elucidation of their intrinsic properties and cross-reactivity patterns has helped in the understanding of the mechanisms of sensitisation and how the allergen profiles determine the different phenotypes. The most frequent yet contrasting fruit and vegetable allergies are pollen-food syndrome (PFS) and lipid transfer protein (LTP) syndrome. In PFS, fruit and vegetable allergies result from a primary sensitisation to labile pollen allergens, such as Bet v 1 or profilin, and the resulting phenotype is mainly mild, consisting of local oropharyngeal reactions. In contrast, LTP syndrome results from a primary sensitisation to LTPs, which are stable plant food allergens, inducing frequent systemic reactions and even anaphylaxis. Although much less prevalent, severe fruit allergies may be associated with latex (latex-fruit syndrome). Molecular diagnosis is essential in guiding the management and risk assessment of these patients. Current management strategies comprise avoidance and rescue medication, including adrenaline, for severe LTP allergies. Specific immunotherapy with pollen is not indicated to treat pollen-food syndrome, but sublingual immunotherapy with LTPs seems to be a promising therapy for LTP syndrome. PMID:26022876

  14. Behavior of glucosinolates in pickling cruciferous vegetables.

    Science.gov (United States)

    Suzuki, Chise; Ohnishi-Kameyama, Mayumi; Sasaki, Keisuke; Murata, Takashi; Yoshida, Mitsuru

    2006-12-13

    Crucifer species, which include widely consumed vegetables, contain glucosinolates as secondary metabolites. Cruciferous vegetables are consumed in Japan in salt-preserved or pickled form as well as cooked and raw fresh vegetables. In this study, changes in contents of glucosinolates during the pickling process were investigated. 4-Methylthio-3-butenyl glucosinolate, a major glucosinolate in the root of Japanese radish, daikon (Raphanus sativus L.), was detected in pickled products with a short maturation period but not in those with a long maturation period. As a model pickling experiment, fresh watercress (Nasturtium officinale) and blanched watercress were soaked in 3% NaCl solution for 7 days. The results showed that the ratio of indole glucosinolates to total glucosinolates increased during the pickling process, whereas total glucosinolates decreased. Myrosinase digestion of glucosinolates in nozawana (Brassica rapa L.) indicated that indole glucosinolates, especially 4-methoxyglucobrassicin, were relatively resistant to the enzyme. The effect of pickling on glucosinolate content and the possible mechanism are discussed in view of degradation by myrosinase and synthetic reaction in response to salt stress or compression during the pickling process. PMID:17147429

  15. Mangrove vegetation in Amazonia: a review of studies from the coast of Pará and Maranhão States, north Brazil Vegetação de manguezais na Amazônia: uma revisão dos estudos da costa dos Estados Pará e Maranhão, norte do Brasil

    Directory of Open Access Journals (Sweden)

    Moirah Paula Machado de Menezes

    2008-01-01

    Full Text Available The present study is a compilation of the literature about vegetation of mangrove forest of the north coast of Brazil. It synthesizes the knowledge about this important ecosystem and lists the currently available literature. The study focuses on the coast of Pará and Maranhão states, which are covered by a continuous belt of mangroves. The mangrove flora comprises six mangrove tree species and several associated species. Mangrove tree height and stem diameter vary as a function of abiotic local stand parameters. Seasonal variation in rainfall and salinity affect the species' phenology and litter fall. Local population use products derived from mangrove plants for different purposes (e.g. fuel; medicinal; rural construction. The increase in the coastal population has given rise to conflicts, which impact on mangrove forest.O presente estudo apresenta uma compilação da literatura sobre a vegetação dos manguezais da costa norte do Brasil, apresentando uma síntese do conhecimento e listando a literatura disponível. O estudo se concentra na costa dos estados do Pará e Maranhão que formam um cinturão contínuo de manguezais . Foram contabilizadas seis espécies arbóreas exclusivas de mangue e várias outras associadas. A altura e o diâmetro das árvores de mangue variam em função de parâmetros abióticos locais. As variações sazonais do regime de chuvas e da salinidade afetam a fenologia das espécies e a produção de serapilheira. A população costeira utiliza a flora do manguezal para diferentes fins (ex: combustível, medicinal, construção rural. O aumento da ocupação costeira inicia um processo de impacto para as florestas de mangue e a disponibilidade de seus recursos.

  16. Investigation of North American vegetation variability under recent climate - A study using the SSiB4/TRIFFID biophysical/dynamic vegetation model

    Science.gov (United States)

    Zhang, Z.; Xue, Y.; MacDonald, G. M.; Cox, P. M.; Collatz, G. J.

    2014-12-01

    This study applies a 2-D biophysical model/dynamic vegetation model (SSiB4/TRIFFID) to investigate the dominant factors affecting vegetation equilibrium conditions, to assess the model's ability to simulate seasonal to decadal variability for the past 60 years (from 1948 through 2008), to analyze vegetation spatiotemporal characteristics over North America (NA), and to identify the relationships between vegetation and climate. Satellite data are employed as constraints for this study. The optimum temperature for photosynthesis, leaf drop threshold temperatures, and competition coefficients in the Lotka-Volterra equation have major impact on the vegetation spatial distribution and reach to equilibrium status in SSiB4/TRIFFID. The phenomenon that vegetation competition coefficients affect equilibrium suggests the importance of including biotic effects in dynamical vegetation modeling. SSiB4/TRIFFID can reproduce the features of NA distributions of dominant vegetation types, the vegetation fraction, and LAI, including its seasonal, interannual, and decadal variability, well compared with satellite-derived products. The NA LAI shows an increasing trend after the 1970s in responding to warming. Meanwhile, both simulation and satellite observations reveal LAI increased in the southeastern U.S. starting from the 1980s. The effects of the severe drought during 1987-1992 and the last decade in the southwestern U.S.on vegetation are also evident from the simulated and satellite-derived LAIs.Both simulated and satellite-derived LAIs have the strongest correlations with air temperature at northern middle to high latitudes in spring through their effect on photosynthesis and phenological processes. During the summer, the areas with positive correlations retreat northward. Meanwhile, in southwestern dry lands, the negative correlations appear due to the heat stress there during the summer. Furthermore, there are also positive correlations between soil wetness and LAI, which

  17. Phenolation of vegetable oils

    Directory of Open Access Journals (Sweden)

    ZORAN S. PETROVIĆ

    2011-04-01

    Full Text Available Novel bio-based compounds containing phenols suitable for the syn­thesis of polyurethanes were prepared. The direct alkylation of phenols with different vegetable oils in the presence of superacids (HBF4, triflic acid as ca­talysts was studied. The reaction kinetics was followed by monitoring the de­crease of the double bond content (iodine value with time. In order to under­stand the mechanism of the reaction, phenol was alkylated with model com­pounds. The model compounds containing one internal double bond were 9-oc­tadecene and methyl oleate and those with three double bonds were triolein and high oleic safflower oil (82 % oleic acid. It was shown that the best structures for phenol alkylation are fatty acids with only one double bond (oleic acid. Fatty acids with two double bonds (linoleic acid and three double bonds (lino­lenic acid lead to polymerized oils by a Diels–Alder reaction, and to a lesser extent to phenol alkylated products. The reaction product of direct alkylation of phenol with vegetable oils is a complex mixture of phenol alkylated with poly­merized oil (30–60 %, phenyl esters formed by transesterification of phenol with triglyceride ester bonds (<10 % and unreacted oil (30 %. The phenolated vegetable oils are new aromatic–aliphatic bio-based raw materials suitable for the preparation of polyols (by propoxylation, ethoxylation, Mannich reactions for the preparation of polyurethanes, as intermediates for phenolic resins or as bio-based antioxidants.

  18. Haploidization of vegetable plants

    International Nuclear Information System (INIS)

    Haploid plants have been widely introduced into vegetable crops breeding programmes, also in Poland. They can be produced by means of androgenesis in brassicas and pepper, gynogenesis in onion and beetroot, or induced parthenogenesis in vegetables belonging to the family Cucurbitaceae. Androgenesis in brassicas can be induced using both anther and microspore cultures. Efficiency of this process, provided the optimal medium composition, depends on conditions for culture initiation (thermal shock is necessary). Around 40% of developing androgenic plants of white cabbage and Brussels sprouts are diploids and after their self-pollination doubled-haploid lines can instantly be produced. Gynogenic development of haploid cells constituting the embryo sac in onion can be induced by a flower bud culture method. Firstly an induction medium is used, followed by a regeneration medium. Almost 90% of obtained plants are haploids and therefore the use of antimitotic agents is necessary in order to double their chromosome number. Induced parthogenesis is being applied in cucumber. Pollen previously exposed to ionising radiation is used for pollination, which causes the development of embryos being subsequently plated on a medium in order to develop haploid plants. Efficiency of the processes leading to the production of haploid plants in every species depends to a high degree on the genotype and growth conditions of donor plants. (author)

  19. DISKRIMINACIJA NA TRGU DELA NA PODLAGI SPOLA

    OpenAIRE

    Prnaver, Polona

    2012-01-01

    Boj proti diskriminaciji je danes velik izziv za države, katerih temelji slonijo na načelih svobode, demokracije in spoštovanja človekovih pravic. Zato morajo v svoj sistem sprejeti vse potrebne ukrepe za boj proti vsem oblikam diskriminacije, predvsem kadar te zadevajo zaposlitev in trg dela. Vendar je problem uravnoteženega zastopanja obeh spolov na trgu dela še vedno zelo prisoten. Diskriminacija glede na spola na trgu dela predstavlja celostno zakonsko urejeno področje, ki se navezuje ...

  20. Vegetable agroforestry - technology: Annual report

    OpenAIRE

    Palada, Manuel C.

    2008-01-01

    In Taiwan, field evaluation of vegetable species and varieties under Agroforestry system continued at AVRDC Organic Farm. Six vegetables (cauliflower, cucumber, eggplant, lettuce, sweet corn and yard long bean) were grown during the fall-winter season (October to December 2007) and winter-spring (January to March 2008) season. Vegetables were grown between tree hedgerows (alleys) and in control plots (no trees). Organic fertilizers (compost) were superimposed as sub-treatments. Varieties with...

  1. FUNCTIONAL VEGETABLE SALADS WITH ALGAE

    OpenAIRE

    Козонова, Ю.О.; Авдєєва, А.А.

    2015-01-01

    Now on the Ukrainian market frozen vegetable salads are well represented. They contain a small amount of protein and have an unbalanced composition nutrientny. Adding algae to the vegetable salads composition allows to resolve this contradiction. In this paper the functional vegetable salads expanding assortment possibilities are represented. The product components composition was designed. It is advisable to add different types of algae (kelp, spirulina and fucus) to the quick-frozen functio...

  2. Relishes: The new pickled vegetables

    Directory of Open Access Journals (Sweden)

    Tepić Aleksandra N.

    2006-01-01

    Full Text Available There have been an increasing interest of consumers for a ide variety of pickled vegetable products worldwide. Regarding the regional vegetable supplies and relatively poor assortment of ready-to-use products, the need to broaden the offer of domestic pickled vegetables at the market came out. In this work recipes for different vegetables, spices and condiments were developed. The best graded samples were analyzed for their main chemical composition (dry matter, proteins, oils and fats, total acidity, total sugars, sucrose, starch, cellulose, pH and energy- values.

  3. Crestridge Vegetation Map [ds211

    Data.gov (United States)

    California Department of Resources — This layer represents vegetation communities in the Department of Fish and Game's Crestridge Ecological Reserve. The County of San Diego, the Conservation Biology...

  4. Investigation of North American Vegetation Variability under Recent Climate: A Study Using the SSiB4/TRIFFID Biophysical/Dynamic Vegetation Model

    Science.gov (United States)

    Zhang, Zhengqiu; Xue, Yongkang; MacDonald, Glen; Cox, Peter M.; Collatz, George J.

    2015-01-01

    Recent studies have shown that current dynamic vegetation models have serious weaknesses in reproducing the observed vegetation dynamics and contribute to bias in climate simulations. This study intends to identify the major factors that underlie the connections between vegetation dynamics and climate variability and investigates vegetation spatial distribution and temporal variability at seasonal to decadal scales over North America (NA) to assess a 2-D biophysical model/dynamic vegetation model's (Simplified Simple Biosphere Model version 4, coupled with the Top-down Representation of Interactive Foliage and Flora Including Dynamics Model (SSiB4/TRIFFID)) ability to simulate these characteristics for the past 60 years (1948 through 2008). Satellite data are employed as constraints for the study and to compare the relationships between vegetation and climate from the observational and the simulation data sets. Trends in NA vegetation over this period are examined. The optimum temperature for photosynthesis, leaf drop threshold temperatures, and competition coefficients in the Lotka-Volterra equation, which describes the population dynamics of species competing for some common resource, have been identified as having major impacts on vegetation spatial distribution and obtaining proper initial vegetation conditions in SSiB4/TRIFFID. The finding that vegetation competition coefficients significantly affect vegetation distribution suggests the importance of including biotic effects in dynamical vegetation modeling. The improved SSiB4/TRIFFID can reproduce the main features of the NA distributions of dominant vegetation types, the vegetation fraction, and leaf area index (LAI), including its seasonal, interannual, and decadal variabilities. The simulated NA LAI also shows a general increasing trend after the 1970s in responding to warming. Both simulation and satellite observations reveal that LAI increased substantially in the southeastern U.S. starting from the 1980

  5. Investigation of North American vegetation variability under recent climate: A study using the SSiB4/TRIFFID biophysical/dynamic vegetation model

    Science.gov (United States)

    Zhang, Zhengqiu; Xue, Yongkang; MacDonald, Glen; Cox, Peter M.; Collatz, G. James

    2015-02-01

    Recent studies have shown that current dynamic vegetation models have serious weaknesses in reproducing the observed vegetation dynamics and contribute to bias in climate simulations. This study intends to identify the major factors that underlie the connections between vegetation dynamics and climate variability and investigates vegetation spatial distribution and temporal variability at seasonal to decadal scales over North America (NA) to assess a 2-D biophysical model/dynamic vegetation model's (Simplified Simple Biosphere Model version 4, coupled with the Top-down Representation of Interactive Foliage and Flora Including Dynamics Model (SSiB4/TRIFFID)) ability to simulate these characteristics for the past 60 years (1948 through 2008). Satellite data are employed as constraints for the study and to compare the relationships between vegetation and climate from the observational and the simulation data sets. Trends in NA vegetation over this period are examined. The optimum temperature for photosynthesis, leaf drop threshold temperatures, and competition coefficients in the Lotka-Volterra equation, which describes the population dynamics of species competing for some common resource, have been identified as having major impacts on vegetation spatial distribution and obtaining proper initial vegetation conditions in SSiB4/TRIFFID. The finding that vegetation competition coefficients significantly affect vegetation distribution suggests the importance of including biotic effects in dynamical vegetation modeling. The improved SSiB4/TRIFFID can reproduce the main features of the NA distributions of dominant vegetation types, the vegetation fraction, and leaf area index (LAI), including its seasonal, interannual, and decadal variabilities. The simulated NA LAI also shows a general increasing trend after the 1970s in responding to warming. Both simulation and satellite observations reveal that LAI increased substantially in the southeastern U.S. starting from the 1980

  6. Ethnobotanical study and nutrient content of indigenous vegetables consumed in Central Kalimantan, Indonesia

    Directory of Open Access Journals (Sweden)

    SUSI KRESNATITA

    2013-10-01

    Full Text Available Abstract. Chotimah HENC, Kresnatita S, Miranda Y. 2013. Ethnobotanical study and nutrient content of indigenous vegetables consumed in Central Kalimantan, Indonesia. Biodiversitas 14: 106-111. People in Central Kalimantan consume vegetables that collected from the wild or traditionally cultivated. Documentation effort of them is very important because of the diversity of local vegetable are threatened with extinction due to the conversion of peat land and forest fires. This study aims to determine the diversity of indigenous vegetables in Central Kalimantan, its use as a vegetable and nutrient content some vegetables. The method used was the exploration and interviews. Exploration carried out in three districts namely Palangkaraya, Pulang Pisau, and Seruyan. Sampling of plants was randomly and selectively. Data analysis was performed descriptively. The results showed that we recorded 42 plant species belonging to 30 families. There were many vegetables processing: stir-fry, clear soup, a light coconut milk soup, acidic soup, or just consumed as fresh vegetables. The result of nutritional value analyzed, Helminthostachys zeylanica (L. Hook had a potential to further develop whether as vegetables or medicinal plant. It had the highest protein, carbohydrate and mineral P, Fe, Na and K content among the vegetables analyzed.

  7. Vegetation diversity and biomass : response to oil sand tailings disposal in Fort McMurray, Alberta

    International Nuclear Information System (INIS)

    While covering the bottom of constructed wetlands with a layer of oil sands tailings has been proposed as a means of disposal, the salts and naphthenic acids (NA) in tailings may have negative impacts on wetland vegetation development. This study was conducted to determine if wetlands constructed with oil sands tailings have a lower vegetation diversity and biomass than constructed wetlands that are not amended with tailings. The effects of NA and salinity on the vegetation in natural, constructed, and tailings-impacted wetlands were evaluated in 30 sites in the Fort McMurray region. Results of the study indicate that the presence of tailings negatively impacted both vegetation diversity and biomass. Salinity was identified as the primary causal factor.

  8. Fruit and vegetable consumption today

    OpenAIRE

    Rabenberg, Martina; Mensink, Gert

    2011-01-01

    This issue will focus the consumption of fruit and vegetable in Germany. One of the questions answered by this article is, if the recommened intake of fruit and vegetable is achieved within the population. The data of the telephone survey "German Health Update" 2009 (GEDA) and EsKiMo, a representative survey on food intake among children and adolescents, provide the answers.

  9. Recovery times of riparian vegetation

    Science.gov (United States)

    Vesipa, R.; Camporeale, C.; Ridolfi, L.

    2016-04-01

    Riparian vegetation is a key element in a number of processes that determine the ecogeomorphological features of the river landscape. Depending on the river water stage fluctuations, vegetation biomass randomly switches between growth and degradation phases and exhibits relevant temporal variations. A full understanding of vegetation dynamics is therefore only possible if the hydrological stochastic forcing is considered. In this vein, we focus on the recovery time of vegetation, namely the typical time taken by vegetation to recover a well-developed state starting from a low biomass value (induced, for instance, by an intense flood). The analytical expression of the plot-dependent recovery time is given, the role of hydrological and biological parameters is discussed, and the impact of river-induced randomness is highlighted. Finally, the effect of man-induced hydrological changes (e.g., river damming or climate changes) is explored.

  10. Spatial Vegetation Data for Effigy Mounds National Monument Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The vegetation spatial database coverage (vegetation map) is a product of the Effigy Mounds National Monument Vegetation Mapping Project, USGS-NPS Vegetation...

  11. Avaliação do perfil de trabalhadores e de condições ergonômicas na atividade de produção de carvão vegetal em bateria de fornos de superfície do tipo "rabo-quente" Evaluation of worker profiles and ergonomic conditions of the charcoal production activity in a line of surface kilns

    Directory of Open Access Journals (Sweden)

    Alexandre Santos Pimenta

    2006-10-01

    Full Text Available Esta pesquisa foi desenvolvida no ambiente de trabalho da produção de carvão vegetal em bateria de fornos de superfície do tipo "rabo-quent"e, localizado na latitude de 17·27' oeste e longitude de 45º11' sul no Estado de Minas Gerais, nos meses de março a junho de 2003. O objetivo geral foi avaliar o perfil de trabalhadores e as condições ergonômicas na atividade de produção de carvão vegetal em bateria de fornos de superfície do tipo "rabo-quente". Os objetivos específicos foram: a avaliar as características pessoais, sociais, econômicas e profissionais do operador; b estudar o clima do local de trabalho (temperatura; e c analisar a capacidade aeróbica do trabalhador. A metodologia empregada foi a proposta por Couto (1996 Apud (1987 e Sant'anna (1998. Pela análise dos dados, pôde-se concluir que o indivíduo da amostra era jovem, mestiço, casado, com poucos filhos e poucos dependentes financeiros, baixo nível de escolaridade, estatura média de 171,40 cm e média de peso corporal de 68,40 kg, 20% de analfabetos, de origem predominantemente rural e que professava a religião Católica. O valor do Indice de Bulbo Úmido Termômetro de Globo (IBUTG encontrado no ambiente de produção de carvão vegetal estava de acordo com a NR 15. A capacidade aeróbica em mililitros de oxigênio por quilograma por minuto apresentou valor médio igual a 35,17 (ml02/kg/min; o menor valor foi igual a 30,56 (ml 02/kg/min e o maior, igual a 39,23 (ml02/kg/min.This investigation was developed in the work environment of charcoal production in a line of surface kilns located at 17º 27' w latitude and 45º 11' 5 longitude in the state of Minas Gerais from March to June 2003. The general objective of this work was to evaluate the worker profile and ergonomic conditions of the charcoal production activity in a line of surface kilns. The specific objectives of this work were: a to evaluate the individual, social, economic and professional

  12. The NA49 experiment

    CERN Document Server

    Patrice Loiez

    2000-01-01

    The two spokespersons of NA49, Reinhard Stock, Frankfurt (1991-1996), sitting and standing, Peter Seyboth, (1997-present), MPI Munich, in the target area of NA49 in front of the first superconducting vertex magnetone of the TPCs. NA49 is one of the seven experiments (NA44, NA45, NA49, NA50, NA52, WA97/NA57 and WA98) involved in CERN's Heavy Ion programme which provided evidence for the existence of a new state of matte, the quark-gluon plasma. In this state, quarks, instead of being bound up into more complex particles such as protons and neutrons, are liberated and roam freely. Theory predicts that this state must have existed at about 10 microseconds after the Big Bang, before the formation of matter as we know it today.

  13. Composição faunística de insetos predadores em fragmento florestal e em área de hortaliças na região de Jaboticabal, Estado de São Paulo - DOI: 10.4025/actascibiolsci.v25i2.2015 Faunal composition of predator insects in forest fragment and area of vegetables in Jaboticabal region, state of São Paulo, Brazil - DOI: 10.4025/actascibiolsci.v25i2.2015

    Directory of Open Access Journals (Sweden)

    Luciano Kenji Sakemi

    2003-04-01

    Full Text Available Efetuou-se um levantamento populacional em área de fragmento florestal e em área de hortaliças, entre novembro de 1996 a fevereiro/1998, visando determinar as espécies de insetos predadores e a influência de fatores abióticos. A amostragem foi efetuada semanalmente por meio de armadilha luminosa, aplicando-se aos resultados análise faunística e correlação simples com temperatura, umidade relativa e precipitação. No fragmento florestal foi observado maior semelhança na abundância de espécies do que na área de hortaliças, mas neste hábitat capturou-se maior número de indivíduos (95%. As espécies Metius sp., Polpochila impressifrons (Dej., Eulissus sp. e Doru sp. foram predominantes nas duas áreas, evidenciando a importância dessas espécies como predadoras de pragas de hortaliças. Arthrostictus speciosus (Dej. e Leptotrachelus sp. predominaram no fragmento florestal, o mesmo ocorrendo com Paederus sp. na área de hortaliças. Esta espécie deve preferir locais abertos e quentes, enquanto A. speciosus e Leptotrachelus sp. podem estar melhor adaptadas para locais escuros e úmidos de florestasA population survey was carried out in a forest fragment and in an area of vegetables, from November/1996 to February/1998, aiming to determine the predator insect species and the influence of abiotic factors. The samples were taken weekly by light traps. The results were evaluated using faunistic analysis and simple correlation with temperature, relative humidity and rainfall. In the forest fragment higher similarity in the abundance of species was observed comparing to the area of vegetables, but the largest number of captured individuals (95% occurred in this last habitat. Metius sp., Polpochila impressifrons (Dej., Eulissus sp. and Doru sp. were predominant species in both areas, evidencing they may play an important role as pest predators in areas of vegetables. Arthrostictus speciosus (Dej. and Leptotrachelus sp. predominated in

  14. Especies arbóreas como bioindicadores de la variación de la composición florísticas de otras formas de crecimiento: Estudio de caso en la amazonía colombiana.

    OpenAIRE

    Barreto Sánchez, Luis Hernán

    2011-01-01

    En este estudio, se investigó la magnitud a la cual el componente arborescente leñoso del bosque explica la variación del patrón de composición de la comunidad vegetal de otras formas de crecimiento, tales como hierbas, lianas, epífitas vasculares y briofitas terrestres en 40 parcelas de 0.1-ha en cuatro paisajes de la Amazonía colombiana. El área de estudio está situada en el Medio Caquetá a lo largo de los ríos Caquetá, Mesay y Cuñaré en la Amazonía Colombiana. Para el análisis de los patro...

  15. Musgos aquáticos como bioindicadores da contaminação por metais pesados: aplicação à bacia hidrográfica do Rio Ave

    OpenAIRE

    Boaventura, Rui; Campos, Fernanda; Martins, Ramiro

    2002-01-01

    Num cenário realista, o uso de metais pelo homem começou a afectar seriamente o ambiente durante a Revolução Industrial. Hoje, duzentos anos mais tarde, encontramo-nos na "Idade da Remoção de Metal" e todos nós temos consciência dos riscos associados a uma disseminação não controlada de metais pesados no ambiente e, em particular, nos meios hídricos.

  16. Recovery times of riparian vegetation

    Science.gov (United States)

    Vesipa, Riccardo; Camporeale, Carlo; Ridolfi, Luca

    2016-04-01

    Riparian vegetation is a key element in a number of processes that determine the eco-geomorphological features of the river landscape. Depending on the river water stage fluctuations, vegetation biomass randomly switches between growth and decay phases, and its biomass exhibits relevant temporal variations. A full understanding of vegetation dynamics is therefore only possible if the hydrological stochastic forcing is considered. In this vein, we focus on the recovery time of vegetation, namely the typical time taken by vegetation to recover a health state starting from a low biomass value (induced, for instance, by an intense flood). The minimalistic stochastic modeling approach is used for describing vegetation dynamics (i.e., the noise-driven alternation of growth and decay phases). The recovery time of biomass is then evaluated according to the theory of the mean first passage time in systems driven by dichotomous noise. The effect of the main hydrological and biological parameters on the vegetation recovery was studied, and the dynamics along the riparian transect was described in details. The effect of climate change and human interventions (e.g., river damming) was also investigated. We found that: (i) the oscillations of the river stage delay the recovery process (up to one order of magnitude, with respect to undisturbed conditions); (ii) hydrological/biological alterations (due to climate change, damming, exotic species invasion) modify the timescales of the recovery. The result provided can be a useful tool for the management of the river. They open the way to the estimation of: (i) the recovery time of vegetation after devastating floods, clear cutting or fires and; (ii) the timescale of the vegetation response to hydrological and biological alterations.

  17. Special study on vegetative covers

    International Nuclear Information System (INIS)

    This report describes the findings of a special study on the use of vegetative covers to stabilize tailings piles for the Uranium Mill Tailings Remedial Action (UMTRA) Project. The principal rationale for using plants would be to establish a dynamic system for controlling water balance. Specifically, vegetation would be used to intercept and transpire precipitation to the atmosphere, rather than allowing water to drain into the tailings and mobilize contaminants. This would facilitate compliance with groundwater standards proposed for the UMTRA Project by the Environmental Protection Agency. The goals of the study were to evaluate the feasibility of using vegetative covers on UMTRA Project piles, define the advantages and disadvantages of vegetative covers, and develop general guidelines for their use when such use seems reasonable. The principal method for the study was to analyze and apply to the UMTRA Project the results of research programs on vegetative covers at other US Department of Energy (DOE) waste management facilities. The study also relied upon observations made of existing stabilized piles at UMTRA Project sites where natural vegetation is growing on the rock-covered surfaces. Water balance and erosion models were also used to quantify the long-term performance of vegetative covers planned for the topslopes of stabilized piles at Grand Junction and Durango, Colorado, two UMTRA Project sites where the decision was made during the course of this special study to use vegetative covers. Elements in the design and construction of the vegetative covers at these two sites are discussed in the report, with explanations of the differing features that reflect differing environmental conditions. 28 refs., 18 figs., 9 tabs

  18. Spatial Vegetation Data for Glacier National Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The geographic information system (GIS) format spatial data set of vegetation for Glacier National Park (GNP) was created by the U.S. Geological Survey...

  19. Spatial Vegetation Data for Navajo National Monument Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — Vegetation at NAVA was mapped and classified by a combination of field plot data collected in 2005 and photo interpretation from 1:12,000 scale color aerial...

  20. Spatial Vegetation Data for Badlands National Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This metadata is for all coverages associated with the vegetation land cover and land use geospatial database for Badlands National Park and surrounding areas. The...

  1. Spatial Vegetation Data for Zion National Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This metadata is for the vegetation and land-use geo-spatial database for Zion National Park and surrounding areas. The project is authorized as part of the...

  2. Spatial Vegetation Data for Hovenweep National Monument Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This polygon feature class represents vegetation communities mapped at Hovenweep National Monument. The polygons were generated using guidelines set by the USGS-NPS...

  3. Spatial Vegetation Data for Voyageurs National Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The vegetation spatial database coverage is of Voyageurs National Park and extended environs, covering 156,886 hectares (387,674 acres). Voyageurs National Park...

  4. Spatial Vegetation Data for Dinosaur National Monument Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This polygon feature class represents vegetation communities mapped at Dinosaur National Monument. The polygons were delineated following guidelines set by the...

  5. Spatial Vegetation Data for Tuzigoot National Monument Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The vegetation units on this map were determined through the stereoscopic interpretation of aerial photographs supported by field sampling and ecological analysis....

  6. Spatial Vegetation Data for Wupatki National Monument Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This metadata is for the vegetation and land-use geo-spatial database for Wupatki National Monument and surrounding areas. The project is authorized as part of the...

  7. Spatial Vegetation Data for Colorado National Monument Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The vegetation units on this map were determined through a series of image processing steps including unsupervised classification, ecological modeling and...

  8. Temporal reflectance changes in vegetables

    DEFF Research Database (Denmark)

    Dissing, Bjørn Skovlund; Clemmensen, Line Katrine Harder; Ersbøll, Bjarne Kjær;

    2009-01-01

    in the surface chemistry of vegetables may be captured in an integrating sphere illumination which enables the creation of detailed surface chemistry maps with a good combination of spectral and spatial resolutions. Prior to multispectral image recording, the vegetables were prefried and frozen at -30Â......°C for four months. During the 14 days of image recording, the vegetables were kept at +5°C in refrigeration. In this period, surface changes and thereby reflectance properties were very subtle. To describe this small variation we employed advanced statistical techniques to search a large featurespace...

  9. Cruciferous Vegetables and Cancer Prevention

    Science.gov (United States)

    ... liver, lung, and stomach ( 2 , 3 ). Studies in animals and experiments with cells grown in the laboratory have identified ... group of people who, because of their genetics, benefit more than other people from eating cruciferous vegetables. ...

  10. Urban conservation agriculture with vegetables

    OpenAIRE

    D.I.A. Edralin; Kieu, L.N.; TRAN, D; Creason, S.; Manuel R. Reyes

    2014-01-01

    This poster describes the implementation of a project to promote vegetable gardening with conservation agriculture in urban schools. LTRA-12 (Conservation agriculture for food security in Cambodia and the Philippines)

  11. Molecular breeding of healthy vegetables

    OpenAIRE

    Irwin L Goldman

    2011-01-01

    Breeders and plant scientists are increasing their efforts to raise the health benefits of fruits and vegetables. Yet, the positive impact of this on public health, it is not a substitute for a healthy diet.

  12. Vegetation - Lassen Foothills [ds564

    Data.gov (United States)

    California Department of Resources — In 2007 Aerial Information Systems, Inc. (AIS) was contracted by the California Native Plant Society (CNPS) to produce a vegetation map for approximately 100,000...

  13. Canadian National Vegetation Classification (CNVC)

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The mandate of the CNVC is to comprehensively classify and describe natural and semi-natural Canadian vegetation in an ecologically meaningful manner. The...

  14. Detecção de formas transmissíveis de enteroparasitas na água e nas hortaliças consumidas em comunidades escolares de Sorocaba, São Paulo, Brasil Detection enteroparasites transmissible forms in water and raw vegetables consumed in pre-schools from Sorocaba, São Paulo state, Brazil

    Directory of Open Access Journals (Sweden)

    Lina Maria De Petrini da Silva Coelho

    2001-10-01

    Full Text Available Avaliou-se a presença de formas transmissíveis de enteroparasitas em água e em hortaliças consumidas cruas, no período de agosto de 1997 a julho de 1998. A água foi submetida à filtração em membranas de celulose. A água da lavagem destas membranas foi submetido ao método de Faust. As hortaliças in natura e lavada foram lavadas e a água submetida ao método de sedimentação. Uma escola não apresentou contaminação; duas tiveram todos os materiais contaminados; quatro, 2 materiais contaminados e três, 1 material contaminado. A água apresentou índice de 0,7% de contaminação (Hymenolepis diminuta, Strongyloides stercoralis e ancilostomídeos; a hortaliça in natura, 3,9% (Strongyloides stercoralis, ancilostomídeos, Ascaris lumbricoides e Giardia lamblia e a lavada, 1,3% (Strongyloides stercoralis, Ascaris lumbricoides e Giardia lamblia. As hortaliças e a água são veiculadoras de enteroparasitas. A forma larval foi a mais presente. A hortaliça in naturaapresentou maior contaminação que a lavada. A lavagem não garantiu a ausência dessas formas em hortaliças.Water and raw vegetables consumed in ten nursery schools were evaluated for the presence of transmissible forms of enteroparasites. The water was submitted to filtration through membranes. The washed membrane water was submitted to the Faust method. The in natura and washed vegetables were washed and the water analyzed by the sedimentation method. Contamination was not detected in one school; in two schools, all the materials were contaminated; in four schools, two items were contaminated and in three, one material presented contamination. The water presented a contamination index of 0.7% contamination (Hymenolepis diminuta, Strongyloides stercoralis and Ancylostomatidae; the vegetables in natura, 3.9% (Strongyloides stercoralis, Ancylostomatidae, Ascaris lumbricoides and Giardia lamblia and the washed samples 1.3% (Strongyloides stercoralis, Ascaris lumbricoides and

  15. Geophysical Applications of Vegetation Modeling

    OpenAIRE

    J. O. Kaplan

    2001-01-01

    This thesis describes the development and selected applications of a global vegetation model, BIOME4. The model is applied to problems in high-latitude vegetation distribution and climate, trace gas production, and isotope biogeochemistry. It demonstrates how a modeling approach, based on principles of plant physiology and ecology, can be applied to interdisciplinary problems that cannot be adequately addressed by direct observations or experiments. The work is relevant to understanding the p...

  16. MARKETING WINTER VEGETABLES FROM MEXICO

    OpenAIRE

    Calvin, Linda; Barrios, Veronica

    1999-01-01

    The North American winter-vegetable industry is highly integrated, with Mexican production supplying a large part of U.S. winter consumption needs. Imports from Mexico undergo a rigorous inspection procedure before entering the United States. In addition to Mexican firms, many U.S. firms are also involved in sourcing winter vegetables from Mexico. To compete well, both U.S. and Mexican firms must adapt to the changing market pressures, which reward firms that can source from many locations to...

  17. Biodiversity of Collembola in urban soils and their use as bioindicators for pollution Biodiversidade de Collembola em solos urbanos e o seu uso como bioindicadores de poluição

    Directory of Open Access Journals (Sweden)

    Cristina Fiera

    2009-08-01

    Full Text Available The objective of this work was to evaluate the effects of pollutants on the abundance and diversity of Collembola in urban soils. The research was carried out in three parks (Cişmigiu, Izvor and Unirea in downtown Bucharest, where the intense car traffic accounts for 70% of the local air pollution. One site in particular (Cişmigiu park was highly contaminated with Pb, Cd, Zn and Cu at about ten times the background levels of Pb. Collembola were sampled in 2006 (July, September, November using the transect method: 2,475 individuals from 34 species of Collembola were collected from 210 samples of soil and litter. Numerical densities differed significantly between the studied sites.The influence of air pollutants on the springtail fauna was visible at the species richness diversity and soil pollution levels. Species richness was lowest in the most contaminated site (Cismigiu, 11 species, which presented an increase in springtails abundances, though. Some species may become resistant to pollution and occur in high numbers of individuals in polluted sites, which makes them a good bioindicator of pollutants.O objetivo deste trabalho foi avaliar os efeitos de poluentes na abundância e na diversidade de Collembola em solos urbanos. A pesquisa foi conduzida em três parques (Cişmigiu, Izvor e Unirea no centro de Bucareste, onde o tráfego intenso de carros é responsável por 70% da poluição do ar local. Um local em particular (parque Cişmigiu está altamente contaminado com Pb, Cd, Zn e Cu, com nível de Pb dez vezes superior aos níveis de fundo. Os Collembola foram coletados em 2006 (julho, setembro, novembro, usando o método de transecto: foram coletados 2.475 indivíduos de 34 espécies de Collembola a partir de 210 amostras de solo e serapilheira. As densidades numéricas diferiram significativamente entre os locais estudados. A influência da poluição do ar na fauna de colêmbolos foi visível em termos de riqueza de espécies e do grau

  18. Curtimento de peles de peixe com taninos vegetal e sintético - DOI: 10.4025/actascianimsci.v30i3.5717

    OpenAIRE

    Karla Fabrícia de Oliveira; Maria Luiza Rodrigues de Souza Franco; Yslene Rocha Kachba; Ariana Martins Vieira; Leandro Cesar de Godoy; Eliane Gasparino

    2008-01-01

    No presente experimento objetivou-se avaliar a resistência das peles de peixes submetidas ao curtimento com taninos vegetal e sintético. As peles foram distribuídas em um delineamento inteiramente casualizado, com seis tratamentos aplicados na etapa de curtimento (T1 = 10% tanino vegetal; T2=10% tanino sintético; T3 = 5% tanino vegetal + 5% sintético; T4 = 12% tanino vegetal; T5 = 12% tanino sintético; T6 = 6% tanino vegetal + 6% sintético) e dez repetições por tratamento, sendo o couro a uni...

  19. MOBING NA DELOVNEM MESTU

    OpenAIRE

    Grunt, Maja

    2016-01-01

    Diplomsko delo se osredotoča na probleme mobinga na delovnem mestu in morebitne rešitve. Razdeljeno je na teoretični in empirični del. V teoretičnem delu smo opredelili pojem mobing na delovnem mestu, kot ga razlagajo različni avtorji, oblike mobinga, ki kažejo na to, da se v podjetjih mobing pojavlja na različne načine in v vseh smereh, vzroke za njegovo nastajanje, ki se kažejo v kulturi organizacije, značilnostih organizacije dela, značilnostih žrtev mobinga in značilnostih napadalcev. Pr...

  20. Thermal properties for vegetation cover

    Science.gov (United States)

    Aleksyutina, D.; Motenko, R.

    2011-12-01

    Different samples of undisturbed vegetation cover were studied under laboratory conditions. Samples were collected from New Chara city, north of the Chita region. Vegetation cover in this area is represented by moss, lichen and tussock growth. Thermal properties were investigated by the I-st type regular mode method (a-calorimeter), the freezing temperature was studied by cryoscopic methods. The dry density of sampled specimens varies from 0.04 to 0.24 g/cm3, and humidity varies from 250 to 375 percent. The freezing temperature depends on moisture content and varies from -0.2 to 0 degrees centigrade. The vegetation cover had low thermal conductivities which varies from 0.05 to 0.46 W/(m*K) in unfrozen conditions, and from 0.07 to 1.14 W/(m*K) in frozen conditions, according to density and moisture content. Diffusivity of samples varies from 0.073*10-6 to 0.114*10-6 m2/s in thawed conditions, and from 0.174*10-6 to 0.584*10-6 m2/s in frozen conditions. The sod (bottom of vegetation cover) had relatively high thermal properties. Thermal properties of vegetation cover and peat (turf) were compared. The thermal conductivity of peat was much higher than thermal conductivity of vegetation cover. This data may be used for modeling of the thickness of the seasonally thawed layer and ground temperature variation. The knowledge of thermal properties of these samples allows us to view vegetation cover as a separate layer of geological section.

  1. 18 CFR 1304.203 - Vegetation management.

    Science.gov (United States)

    2010-04-01

    ... 18 Conservation of Power and Water Resources 2 2010-04-01 2010-04-01 false Vegetation management...-Owned Residential Access Shoreland § 1304.203 Vegetation management. No vegetation management shall be approved on TVA-owned Residential Access Shoreland until a Vegetation Management Plan meeting...

  2. Vegetables and other core food groups

    NARCIS (Netherlands)

    Poelman, Astrid A.M.; Delahunty, Conor M.; Graaf, de Kees

    2017-01-01

    Vegetables are the food category least liked by children. This research investigated the sensory properties of vegetables vis-a-vis other core foods that comprise children's diets, to determine to what degree low acceptance of vegetables can be attributed to sensory properties. Vegetables (n = 34

  3. The Multi - vitamin Nutrient Fresh Vegetable Juice

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    @@ In the Tenth Five- Year Plan period, an important strategy for food industry is to develop fruit vegetable freshening and processing industry. Now,the consumable demand for vegetables turns to fresh,convenient, nutritious, safe and dean ones, while semi-processed vegetables and mixed fresh vegetable juices will meet this market demand exactly.

  4. Health Benefits of Fruits and Vegetables1

    OpenAIRE

    Slavin, Joanne L; Lloyd, Beate

    2012-01-01

    Fruits and vegetables are universally promoted as healthy. The Dietary Guidelines for Americans 2010 recommend you make one-half of your plate fruits and vegetables. Myplate.gov also supports that one-half the plate should be fruits and vegetables. Fruits and vegetables include a diverse group of plant foods that vary greatly in content of energy and nutrients. Additionally, fruits and vegetables supply dietary fiber, and fiber intake is linked to lower incidence of cardiovascular disease and...

  5. Local vegetables in Cameroon: Corchorus species used as a vegetable.

    NARCIS (Netherlands)

    Westphal-Stevels, J.M.C.

    1986-01-01

    An agro-botanical study of local vegetables in Cameroon is in preparation, including the taxonomy, identity, morphology, agronomy and nutritional value of about 70 species. Corchorus olitorius L. and other edible species of the genus Corchorus L. (Tiliaceae) are part of this study. The wide variatio

  6. Influências de Atta spp. (Hymenoptera: Formicidae) na recuperação da vegetação pós-fogo em floresta de transição amazônica Influences of leafcutter ant Atta spp. (Hymenoptera: Formicidae) on vegetation recovery after fire in Amazonian transitional forest

    OpenAIRE

    Karine Santana Carvalho; Jennifer Balch; Paulo Moutinho

    2012-01-01

    Este estudo investigou o papel das saúvas na recuperação da vegetação pós-fogo. Foi hipotetizado que a perturbação do fogo aumenta a abundância de ninhos de saúva (1) e as atividades de remoção de sementes (2) e desfolha (3), especialmente no ambiente de borda. Os ninhos de saúva foram inventariados e mapeados e após 17 meses, checados para o registro de sua atividade e de novas colônias emergindo na área. Realizou-se experimentos comparativos de remoção de sementes e desfolha de plântulas em...

  7. Methane production from cork contaminated with vegetable oils

    OpenAIRE

    Neves, Tânia Marisa Teixeira

    2014-01-01

    Dissertação de mestrado integrado em Engenharia Biológica (área de especialização em Tecnologias Ambientais) Os derrames de óleo vegetal, embora pouco divulgados, constituem um grave problema ambiental. Este tipo de acidentes ocorre com frequência na translação deste produto entre diferentes países e no próprio armazenamento. A cortiça, matéria-prima com grande importância económica, social e ambiental em Portugal, tem elevada capacidade de reter óleos vegetais e que pode, port...

  8. NUMERICAL MODEL FOR FLOW MOTION WITH VEGETATION

    Institute of Scientific and Technical Information of China (English)

    ZHANG Jian-tao; SU Xiao-hui

    2008-01-01

    A set of governing equations for turbulent flows in vegetated area were derived with the assumption that vegetation is of straight and rigid cylinder. The effect of vegetation on flow motion was represented by additional inertial and drag forces. The new model was validated by available experimental data for open channel flows passing through vegetated areas with different vegetation size, density and distribution. Numerical results are in good agreement with the experimental data. Finally, the flow around a supposed isolated vegetated pile was simulated and the effects of vegetation density on the wake flow were discussed. It is found that the presence of vegetation, even at a very low density, has the pronounced influence on the dissipation of flow energy, both inside the vegetation domain and outside it in the wake flow region.

  9. FACTORS INFLUENCING BENDING RIGIDITY OF SUBMERGED VEGETATION

    Institute of Scientific and Technical Information of China (English)

    WU Long-hua; YANG Xiao-li

    2011-01-01

    The bending rigidity of submerged vegetation is closely related with vegetative drag force.This work aims at determining the effects of flow conditions and characteristics of vegetation on the bending rigidity of submerged vegetation.Based on the dimensional analysis method,the factors influencing the bending rigidity of individual submerged vegetation were analyzed.The relationship between the relative bending rigidity and its influencing factors was investigated by experimental observation,and a relative bending rigidity expression for submerged vegetation was obtained by means of multiple linear regression method.The results show that the submerged vegetation has three states under different inflow conditions,and the each critical relative bending rigidity of individual submerged vegetation was determined for the different states of submerged vegetation.

  10. Spatial Vegetation Data for Gateway National Recreation Area Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — Vegetation map of Gateway National Recreation Area provides local names for vegetation types, as well as crosswalks to the National Vegetation Classification System...

  11. Vegetable oil basestocks for lubricants

    Energy Technology Data Exchange (ETDEWEB)

    Garces, R.; Martinez-Force, E.; Salas, J.

    2011-07-01

    The use of vegetable biodegradable basestocks for lubricant oils present several advantages over the much more extended mineral bases. These advantages refer to biodegradability, a renewable feedstock of local production, lubricant and viscosity index and lower costs than synthetic lubricant bases. Despite these benefits, their use in industry and motor vehicles is not yet extensive due their lower stability and higher pour points. Vegetable oils are esters of fatty acids and glycerol, and their physicochemical properties rely mainly on the composition of their acyl moieties. Thus, to assure the maximum levels of stability while maintaining acceptable behavior at low temperatures, monounsaturated fatty acids are preferred for this purpose. The presence of natural antioxidants also improves the properties of these vegetable based stocks as lubricants. These oils usually require additives to improve their viscosity value, oxidative stability and properties at low temperatures. In the present work, the different sources of vegetable oils appropriate for biolubricant production were reviewed. Their properties and the future improvement of the oil bases, oil based stock production, uses and additives are discussed. (Author).

  12. Vegetative propagation of Strelitzia reginae.

    NARCIS (Netherlands)

    Pol, van de P.A.; Hell, van T.F.

    1988-01-01

    Strelitzia reginae is propagated either by division of naturally developed branches known as fans or by seeds. Vegetative propagation by division is limited by a low rate of multiplication being 0.5–1.5 divisions per branch per year. Branching originates in the division of the apical dome with an ab

  13. Vegetables, Coctails & Reflections / Marco Laimre

    Index Scriptorium Estoniae

    Laimre, Marko, 1968-

    2006-01-01

    Pealkirja "Vegetables, Coctails & Reflections" kandis Tallinna Kunstihoones 8.04.-28.05.2006 avatud Elin Kardi, Marko Mäetamme, Marco Laimre ja Andres Tali ühisnäitusel "Vägivald ja propaganda" Marco Laimre installatsioon. Marco Laimre esinemine raadiosaates "kunst.er" Klassikaraadios 16.04.2006

  14. Flavour release from dried vegetables.

    NARCIS (Netherlands)

    Ruth, van S.M.

    1995-01-01

    The research described in this thesis was focused on the development of an in vitro model system for isolation of volatile compounds from dried vegetables under mouth conditions, such as volume of the mouth, temperature, salivation and mastication. Instrumental analysis of these volatile compoun

  15. Vegetation - Medium Scale Central Valley Riparian Vegetation and Land Use, 2011 [ds723

    Data.gov (United States)

    California Department of Resources — Geodatabase (SDE) feature class containing map of vegetation along mainstem rivers and major tributaries (including ancillary natural and semi-natural vegetation)...

  16. Serving vegetables first: A strategy to increase vegetable consumption in elementary school cafeterias.

    Science.gov (United States)

    Elsbernd, S L; Reicks, M M; Mann, T L; Redden, J P; Mykerezi, E; Vickers, Z M

    2016-01-01

    Vegetable consumption in the United States is low despite the wealth of evidence that vegetables play an important role in reducing risk of various chronic diseases. Because eating patterns developed in childhood continue through adulthood, we need to form healthy eating habits in children. The objective of this study was to determine if offering vegetables before other meal components would increase the overall consumption of vegetables at school lunch. We served kindergarten through fifth-grade students a small portion (26-33 g) of a raw vegetable (red and yellow bell peppers) while they waited in line to receive the rest of their lunch meal. They then had the options to take more of the bell peppers, a different vegetable, or no vegetable from the lunch line. We measured the amount of each vegetable consumed by each child. Serving vegetables first greatly increased the number of students eating vegetables. On intervention days most of the vegetables consumed came from the vegetables-first portions. Total vegetable intake per student eating lunch was low because most students chose to not eat vegetables, but the intervention significantly increased this value. Serving vegetables first is a viable strategy to increase vegetable consumption in elementary schools. Long-term implementation of this strategy may have an important impact on healthy eating habits, vegetable consumption, and the health consequences of vegetable intake.

  17. Evaluation of efficiency of equipment used in the conservation of fruits and vegetables in the terminal Warehouse of Sao Paulo - CEAGESP; Avaliacao da eficiencia no uso dos equipamentos de refrigeracao utilizados na conservacao de frutas e hortalicas no entreposto terminal de Sao Paulo (CEAGESP-Companhia de Entrepostos e Armazens Gerais de Sao Paulo)

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira Neto, Josue; Ferreira, Marcos David [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Faculdade de Engenharia Agricola (FEAGRI); Neves Filho, Lincoln de Camargo [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Dept. de Engenharia de Alimentos; Gutierrez, Anita de Souza Dias [CEAGESP, Sao Paulo, SP (Brazil). Centro de Qualidade em Horticultura

    2004-07-01

    The shelf life of fruits and vegetables can be directly related to store temperature. At determined temperature and humidity a better conservation of the product can be achieve. The cold chain delays the aging, having its conservation guaranteed until the consumer. It was carried through in the Terminal Warehouse of Sao Paulo- CEAGESP, a research for evaluation of the condition of the cold chambers used. The cold storage equipment evaluation was measured using the follow parameters: temperature, humidity, isolation, type of equipment used, etc. It was analyzed, chambers used for cold storage, using thermal load calculation. Apple and pears were the most stored commodities in CEAGESP, 50 % and bananas the second one (31,4%). Based in the average volume of commercialization, it was observed that 57% of the motors were over dimensioned. (author)

  18. Relação entre a presença de vegetação herbácea e a regeneração natural de espécies lenhosas em pastagens abandonadas na Floresta Ombrófila Densa do Sul do Brasil Relationship between herbaceous vegetation and regeneration of woody species in abandoned pastures in the Atlantic Rain Forest in Southern Brazil

    Directory of Open Access Journals (Sweden)

    Kwok Chiu Cheung

    2009-12-01

    Full Text Available A conversão de áreas florestais em pastagens constitui uma das atividades que mais degradam a Floresta Ombrófila Densa. Neste estudo, avaliaram-se áreas de pastagens abandonadas há oito, 14, 48, 50 e 96 meses, em Antonina (Estado do Paraná, 25º19'15'' S e 45º24'24'' W, com o objetivo de verificar se a presença da cobertura herbácea diminui a regeneração natural das espécies arbóreas. Foram identificadas as espécies e avaliada a biomassa de espécies herbáceas (em 24 parcelas de 1 m² e volume das espécies lenhosas (altura igual ou superior a 1 m; 24 parcelas de 25 m². Nas cinco áreas estudadas foram amostradas 59 espécies herbáceas (1.062 indivíduos, das quais, a maioria (95% era exótica (incluindo Brachiaria decumbens e B. humidicola. Para a comunidade de hábito arbustivo-arbóreo, foram amostradas 104 espécies (2.234 indivíduos. Houve significativa modificação florística e estrutural da vegetação nos primeiros quatro anos após o abandono das pastagens. O desenvolvimento da vegetação lenhosa foi inversamente relacionado à presença de espécies herbáceas, o que sugere que a cobertura vegetal promovida pelas ervas, principalmente B. decumbens, seja um dos fatores que influenciam negativamente a regeneração natural. Estes resultados sugerem que práticas de manejo que incluam a remoção ou redução dos efeitos de Brachiaria spp sejam necessárias na restauração de pastagens abandonadas.Deforestation and conversion of forests to pasture is one of the most degrading activities impacting the Atlantic Rain Forest. We analyzed pastures abandoned for 8, 14, 48, 50 and 96 months in Antonina (Paraná state; 25º19'15'' S; 45º24'24'' W to verify if herb cover reduces the natural regeneration of the Atlantic forest. We identified species and assessed shoot biomass of herbaceous species (in 24 1 m² plots, and calculated the volume of all woody species (height > 1m; in 24 25 m² plots. We collected 59 herbaceous

  19. A FRACTIONATION STUDY OF MINERAL ELEMENTS IN RAW AND COOKED LEAF VEGETABLES CONSUMED IN SOUTHERN BRAZIL

    Directory of Open Access Journals (Sweden)

    LUCIANE MIE KAWASHIMA

    2009-07-01

    Full Text Available

    Five samplings of leaf vegetables widely consumed in Southern Brazil (lettuce, rucola, watercress, kale, chicory, Chinese cabbage, and cabbage were taken during the period of a year in food markets of the city of Campinas, Brazil. A selective extraction of potassium, sodium, calcium, magnesium, iron, manganese, copper, and zinc was conducted on the raw vegetables and four of the vegetables (kale, chicory, Chinese cabbage, and cabbage were also cooked briefly under dry heat for three minutes and submitted to the selective extraction. The extraction separated the minerals into fractions containing mineral elements bound to soluble complexes, bound to ligands solubilized by mild acidic oxidizing conditions, and bound to insoluble ligands under mild acidic oxidizing conditions. The minerals concentrations in each fraction were determined by flame atomic absorption spectrometry. The amount of K, Na, Ca, and Mg extractable at pH 7.0 (soluble fraction from raw vegetables varied between 22 to 75 % of the total content of the mineral present. The soluble fractions of minor elements such as Mn, Zn, and Fe varied from 0 to 100% in the raw vegetables. The brief cooking used besides causing negligible losses of the minerals also increased the solubility of the minerals by 44% to 200%. KEYWORDS: Leaf vegetables; soluble mineral elements in vegetables.

  20. Biota - 2009 Vegetation Inventory - Lake Ashtabula, ND

    Data.gov (United States)

    Army Corps of Engineers, Department of the Army, Department of Defense — 2009 Vegetation Classification for Lake Ashtabula, ND Vegetation Project Report, OMBIL Environmental Stewardship - Level 1 Inventory, U.S. Army Corps of Engineers...

  1. Vegetation - San Felipe Valley [ds172

    Data.gov (United States)

    California Department of Resources — This Vegetation Map of the San Felipe Valley Wildlife Area in San Diego County, California is based on vegetation samples collected in the field in 2002 and 2005...

  2. Potential for Vegetables During the Strawberry Season

    OpenAIRE

    Bratsch, Tony

    2008-01-01

    Having fresh vegetables available during strawberry harvest season adds variety and selection for these customers. The addition of vegetables to the marketing mix is a way to increase dollars per sale and net income.

  3. Biota - 2011 Vegetation Inventory - Marsh Lake, MN

    Data.gov (United States)

    Army Corps of Engineers, Department of the Army, Department of Defense — 2011 Vegetation Classification for Marsh Lake, MN Vegetation Project Report, OMBIL Environmental Stewardship - Level 1 Inventory. Marsh Lake is located on the...

  4. Curtimento de peles de peixe com taninos vegetal e sintético = Tanning fish skins using vegetable and synthetic tannins

    Directory of Open Access Journals (Sweden)

    Ariana Martins Vieira

    2008-07-01

    Full Text Available No presente experimento objetivou-se avaliar a resistência das peles de peixes submetidas ao curtimento com taninos vegetal e sintético. As peles foram distribuídas em um delineamento inteiramente casualizado, com seis tratamentos aplicados na etapa decurtimento (T1 = 10% tanino vegetal; T2=10% tanino sintético; T3 = 5% tanino vegetal + 5% sintético; T4 = 12% tanino vegetal; T5 = 12% tanino sintético; T6 = 6% tanino vegetal + 6% sintético e dez repetições por tratamento, sendo o couro a unidade experimental.Para os testes de resistência à tração, alongamento e rasgamento, foi utilizado o dinamômetro EMIC. O curtimento com tanino vegetal, sintético e/ou sua combinação, assim como os níveis utilizados dentro de cada técnica de curtimento, interferiu no teste de tração, no entanto não influenciou No teste de alongamento e rasgamento progressivo. Portanto, a técnica de curtimento interfere na resistência dos couros de peixes. As peles de tilápia, quando curtidas e recurtidas apenas com tanino sintético, independentemente da concentração (10 ou 12%, apresentaram pior resistência à tração. Quando comparados com os que receberam 10% de taninos (vegetal e a combinação dos taninos, esses couros não apresentaram diferença na resistência.The objective of the present experiment was to evaluate the resistance of fish skins submitted to tanning using vegetable and synthetic tannins. Skins were distributed in a completelyrandomized design, with six treatments applied in the tanning stage (T1 = 10% vegetable tannin; T2 = 10% synthetic tannin; T3 = 5% vegetable tannin + 5% synthetic tannin; T4 = 12% vegetable tannin; T5 = 12% synthetic tannin; T6 = 6% vegetable tannin + 6% synthetic. Ten repetitions per treatment were conducted, and the leather was theexperimental unit. For the tests of tensile strength, lengthening and progressive tearing resistance, an EMIC dynamometer was used. Tanning with vegetable tannin, synthetic

  5. Digestibilidad aparente de ingredientes de origen vegetal y animal en la cachama

    Directory of Open Access Journals (Sweden)

    Wálter Vásquez-Torres

    2013-08-01

    Full Text Available El objetivo de esta investigación fue evaluar los coeficientes de digestibilidad aparente de materia seca (MS, proteína y energía de alimentos de origen animal y vegetal, utilizados en raciones para cachama (Piaractus brachypomus. Fueron formuladas 15 dietas experimentales, compuestas por 69,5% de una dieta referencia semipurificada, 0,5% de óxido de cromo y 30% del ingrediente a evaluar. En cada experimento, fueron utilizados 90 peces que se alimentaron durante cinco días con la correspondiente dieta; al quinto día, los animales fueron trasladados a tanques cónicos para recolección de heces. Los coeficientes de digestibilidad aparente (CDA de proteína variaron de 92,1 a 84,7% entre los ingredientes proteicos de origen vegetal, de 85,0 a 68,5% en los proteicos de origen animal, y de 83,7 a 57,6% entre los de origen vegetal con baja proteína. Los CDA de energía de torta de soya, gluten de maíz, harina de yuca integral y de todos los ingredientes de origen animal arrojaron valores superiores a 76%. Los máximos CDA de MS variaron entre 71 y 78% y fueron observados en gluten, harina de yuca y en los ingredientes de origen animal. La cachama tiene alta capacidad para aprovechar eficientemente ingredientes de origen animal y vegetal.

  6. Efeitos da purificação e do enriquecimento do creosoto vegetal na preservação da madeira de Eucalyptus grandis, após 48 meses de instalação do ensaio de campo Effects of the purification and enrichment of wood tar creosote on preservation of Eucalyptus grandis wood, after 48 months of field testing

    Directory of Open Access Journals (Sweden)

    Juarez Benigno Paes

    2002-08-01

    Full Text Available O objetivo deste trabalho foi avaliar a eficiência da purificação e do enriquecimento do creosoto vegetal contra xilófagos, após 48 meses de instalação do ensaio de campo. Por destilação do alcatrão vegetal, obteve-se o creosoto vegetal bruto (creosoto 1, recuperado à temperatura de 110-255 °C. Uma fração dos destilados foi lavada com solução a 9% de bicarbonato de sódio, para obter o creosoto vegetal purificado (creosoto 2. Os creosotos 1 e 2 foram enriquecidos com 3% de naftenato de cobre; 3% de naftenato de zinco; 3% de naftenato de cobalto; 2% de TBTO; 2% de tribromofenato de tributil-estanho; 2% de pentaclorofenol; ou 0,4% de trióxido de arsênico. Estacas obtidas do alburno de Eucalyptus grandis foram tratadas pelo processo de célula cheia. A eficiência das soluções de creosoto vegetal foi comparada com a do creosoto mineral. O ensaio foi instalado em três localidades (Viçosa, Ponte Nova e Leopoldina. Os resultados indicam que o creosoto 2 + pentaclorofenol foi superior aos creosotos 1 e 2 + TBTO, aos creosotos 1 e 2 + naftenato de zinco e ao creosoto 1 puro, sendo semelhante ao creosoto mineral. O creosoto 2 foi superior ao creosoto 1 apenas para a localidade de Leopoldina. De modo geral, a vida média da madeira não-tratada ficou entre 12 e 24 meses, a da madeira tratada com o creosoto 1 + TBTO entre 24 e 37 meses e a da tratada com o creosoto 1 + naftenato de zinco entre 37 e 48 meses e a com o creosoto 1 + naftenato de cobalto, creosoto 2 puro e creosoto 2 + naftenato de zinco ou TBTO foi de 48 meses. No atual estágio da pesquisa, não é possível estimar a vida média da madeira tratada com as demais soluções preservativas testadas, pois ainda não atingiram os 60% das estacas quebradas.The objective of this work was to evaluate the efficiency of purifying and enriching wood tar creosote against wood decay after 48 months in field testing. By distillation of wood tar, the crude wood tar (creosote 1 was

  7. Irradiation of fruit and vegetables

    International Nuclear Information System (INIS)

    There is likely to be less economic incentive to irradiate fruits and vegetables compared with applications which increase the safety of foods such as elimination of Salmonella or decontamination of food ingredients. Of the fruit and vegetable applications, irradiation of mushrooms may offer the clearest economic benefits in North-Western Europe. The least likely application appears to be sprout inhibition in potatoes and onions, because of the greater efficiency and flexibility of chemical sprout inhibitors. In the longer-term, combinations between irradiation/MAP/other technologies will probably be important. Research in this area is at an early stage. Consumer attitudes to food irradiation remain uncertain. This will be a crucial factor in the commercial application of the technology and in the determining the balance between utilisation of irradiation and of technologies which compete with irradiation. (author)

  8. Phenolic Compounds in Brassica Vegetables

    Directory of Open Access Journals (Sweden)

    Pablo Velasco

    2010-12-01

    Full Text Available Phenolic compounds are a large group of phytochemicals widespread in the plant kingdom. Depending on their structure they can be classified into simple phenols, phenolic acids, hydroxycinnamic acid derivatives and flavonoids. Phenolic compounds have received considerable attention for being potentially protective factors against cancer and heart diseases, in part because of their potent antioxidative properties and their ubiquity in a wide range of commonly consumed foods of plant origin. The Brassicaceae family includes a wide range of horticultural crops, some of them with economic significance and extensively used in the diet throughout the world. The phenolic composition of Brassica vegetables has been recently investigated and, nowadays, the profile of different Brassica species is well established. Here, we review the significance of phenolic compounds as a source of beneficial compounds for human health and the influence of environmental conditions and processing mechanisms on the phenolic composition of Brassica vegetables.

  9. Hyperspectral remote sensing of vegetation

    Science.gov (United States)

    Thenkabail, Prasad S.; Lyon, John G.; Huete, Alfredo

    2011-01-01

    Hyperspectral narrow-band (or imaging spectroscopy) spectral data are fast emerging as practical solutions in modeling and mapping vegetation. Recent research has demonstrated the advances in and merit of hyperspectral data in a range of applications including quantifying agricultural crops, modeling forest canopy biochemical properties, detecting crop stress and disease, mapping leaf chlorophyll content as it influences crop production, identifying plants affected by contaminants such as arsenic, demonstrating sensitivity to plant nitrogen content, classifying vegetation species and type, characterizing wetlands, and mapping invasive species. The need for significant improvements in quantifying, modeling, and mapping plant chemical, physical, and water properties is more critical than ever before to reduce uncertainties in our understanding of the Earth and to better sustain it. There is also a need for a synthesis of the vast knowledge spread throughout the literature from more than 40 years of research.

  10. Envolvimento Parental na Escola

    OpenAIRE

    Alves, Marta Raquel Garcia; Rolim, Luísa

    2011-01-01

    O nosso estudo teve como objectivo verificar se existe envolvimento parental na Escola Básica Integrada com Jardim de Infância de Góis. Nesta análise foram questionados alguns alunos dos 7º e 9º anos, encarregados de educação e docentes dos referidos alunos. A nossa amostra contou com a participação de 115 indivíduos sendo 67 alunos 31 encarregados de educação e 17 docentes. Na recolha dos dados usamos o Questionário de Envolvimento Parental na Escola de Pereira (2002), com Versão para pais e...

  11. FOTOALERGIJSKE REAKCIJE NA LIJEKOVE

    OpenAIRE

    Bukvić Mokos, Zrinka; Lipozenčić, Jasna

    2011-01-01

    Reakcije na lijekove posredovane svjetlom mogu biti fototoksične i fotoalergijske. U ovom preglednom članku prikazane su fotoalergijske reakcije na lijekove koje nastaju interakcijom lijeka i ultraljubičastog svjetla uz sudjelovanje imunosnih mehanizama. Uz osvrt na fotobiologiju te najčešće lijekove koji sudjeluju u nastanku fotoalergijskih reakcija, prikazana je imunološkapodloga tih dermatoza, klinička slika, te dijagnostički i terapijski postupak. Poznavanje potencijalnih fotoalergena i p...

  12. EROTIČNA RISBA

    OpenAIRE

    LAZAR, FORTUNA

    2009-01-01

    Diplomsko delo z naslovom »Erotična risba« je sestavljeno iz teoretičnega in praktičnega dela, pri čemer je praktični del vsebinsko vezan na teoretični del diplomske naloge. Neposredna erotična upodobitev je del likovne produkcije večine umetnikov. V raziskovanju erotičnih upodobitev sem izpostavila dva umetnika, Egona Schieleja, ki je ustvaril pomemben opus erotične figuralike in Marlene Dumas, še živečo umetnico, ki skozi erotične podobe izraža aktualne teme sodobnosti. Namen tega diplomske...

  13. Djelovanje eksplozija na konstrukcije

    OpenAIRE

    Draganić, Hrvoje; Sigmund, Vladimir

    2012-01-01

    Dana je analiza opterećenja eksplozijom na konstrukciju te numerički primjer djelovanja na fiktivnu građevinu. Cilj je bio upoznati se s fenomenom eksplozije kao opterećenja na konstrukcije uslijed sve veće terorističke prijetnje te nedostatka smjernica u nacionalnim i europskim propisima o provjeri konstrukcija izloženih djelovanju eksplozija. Analitički je određeno opterećenje eksplozijom kao vremenski zapis promjene tlaka zraka te numerički modeliranja konstrukcija i prethodno određeno opt...

  14. Vegetative propagation of Strelitzia reginae.

    OpenAIRE

    Pol, van de, J.; Hell, van, T.F.

    1988-01-01

    Strelitzia reginae is propagated either by division of naturally developed branches known as fans or by seeds. Vegetative propagation by division is limited by a low rate of multiplication being 0.5–1.5 divisions per branch per year. Branching originates in the division of the apical dome with an absolute abscence of branching from axillary buds. Propagation by seeds is undesirable due to juvenility and genetic variation. Therefore induction of branching to increase the multiplication rate of...

  15. Flora and Vegetation of Cuicocha

    OpenAIRE

    Peñafiel Cevallos, M.

    2003-01-01

    Metadata only record Ecuador is one of 17 countries in the world considered to have the greatest biodiversity. The research presented here constitutes the most important scientific contribution to the knowledge of botanical resources in the region, particularly around Lake Cuicocha. It facilitates understanding and appreciation of the Andean vegetation, which is increasingly being altered and destroyed. This study provides an indispensable resource for reference and support in future resea...

  16. Vegetation

    DEFF Research Database (Denmark)

    Epstein, H.E.; Walker, D.A.; Bhatt, U.S.;

    2012-01-01

    increased 20-26%. • Increasing shrub growth and range extension throughout the Low Arctic are related to winter and early growing season temperature increases. Growth of other tundra plant types, including graminoids and forbs, is increasing, while growth of mosses and lichens is decreasing. • Increases...

  17. Caracterização da vegetação de restinga da RPPN de Maracaípe, PE, Brasil, com base na fisionomia, flora, nutrientes do solo e lençol freático Characterization of restinga vegetation at Maracaípe, Pernambuco State, Brazil, based on physiognomy, flora, soil nutrients, and water-table level

    OpenAIRE

    Eduardo Bezerra Almeida Jr; Murielle Andreo Olivo; Elcida de Lima Araújo; Carmen Silvia Zickel

    2009-01-01

    O objetivo deste estudo foi realizar o levantamento florístico e descrever as fisionomias, relacionando-as com as formas de vida, fertilidade do solo e variações do lençol freático encontradas na restinga de Maracaípe. A área possui 76,2 ha de vegetação de restinga, sob as coordenadas 08º31'48"S e 35º01'05"W. Possui clima do tipo As' e solo classificado como Neossolo Quartzarênico. Foram feitas caminhadas aleatórias nas três fisionomias existentes - floresta, campo não inundável e campo inund...

  18. Efeito dos óleos vegetais de andiroba (Carapa sp.) e Copaíba (Copaifera sp.) sobre forídeo, pragas de colméias, (Diptera: Phoridae) na Amazônia Central Effect of andiroba (Carapa sp.) and copaiba's (Copaifera sp.) vegetable oils on phorides, hives's prague (Diptera: Phoridae) in Central Amazonia

    OpenAIRE

    Delci da Costa Brito Freire; Carmina Rodrigues da Costa Brito-Filha; Gislene Almeida Carvalho-Zilse

    2006-01-01

    O conhecimento de substâncias repelentes para forídeos é um passo importante para a meliponicultura brasileira, pois esses insetos podem causar sérios danos às colméias de abelhas nativas. Os óleos de copaíba e andiroba, naturalmente encontrados na região amazônica, são muito utilizados pelos povos tradicionais da região como repelentes de insetos. Foi observado o efeito de dois óleos vegetais (andiroba e copaíba) sobre a postura de ovos por fêmeas de forídeos em condições de laboratório. A p...

  19. Inclusão de fontes de óleo na dieta de cabras em lactação: produção, composição e perfil dos ácidos graxos do leite Feeding vegetable oil to lactating goats: milk production and composition and milk fatty acids profile

    OpenAIRE

    Fábio José Maia; Antonio Ferriani Branco; Gisele Fernanda Mouro; Sabrina Marcantonio Coneglian; Geraldo Tadeu dos Santos; Tathiane Fernanda Minella; Kátia Cylene Guimarães

    2006-01-01

    O objetivo neste trabalho foi avaliar o efeito da inclusão de fontes de óleo na dieta de cabras em lactação sobre a produção, a composição e o perfil dos ácidos graxos da gordura do leite. Foram utilizadas quatro cabras da raça Saanen (54±1,02 kg PV) aos 80 dias em lactação, canuladas no rúmen. Os tratamentos consistiram de dietas suplementadas com diferentes fontes de óleo (canola, arroz e soja) e de uma dieta controle. O delineamento experimental utilizado foi o quadrado latino 4 x 4...

  20. HYDRAULICS OF COMPOUND CHANNEL WITH VEGETATED FLOODPLAINS

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Experimental researches were conducted on flood carrying capacity of compound open channels with wide and narrow floodplains as well as hydrodynamic behavior of overbank flow across vegetated floodplains. Results show that hydrodynamic behavior of compound channels with narrow floodplains is different from that of the wide floodplains. In such compound channels with narrow vegetated floodplains as in the Pearl River delta nework, it has been found that vegetated domains become really impenetrable when the length of vegetated domain is larger than Lm, the length of flow in floodplain coming into the main channel, and that the influence of vegetated floodplains upon flood stages of a channel is not very significant.

  1. [Review of dynamic global vegetation models (DGVMs)].

    Science.gov (United States)

    Che, Ming-Liang; Chen, Bao-Zhang; Wang, Ying; Guo, Xiang-Yun

    2014-01-01

    Dynamic global vegetation model (DGVM) is an important and efficient tool for study on the terrestrial carbon circle processes and vegetation dynamics. This paper reviewed the development history of DGVMs, introduced the basic structure of DGVMs, and the outlines of several world-widely used DGVMs, including CLM-DGVM, LPJ, IBIS and SEIB. The shortages of the description of dynamic vegetation mechanisms in the current DGVMs were proposed, including plant functional types (PFT) scheme, vegetation competition, disturbance, and phenology. Then the future research directions of DGVMs were pointed out, i. e. improving the PFT scheme, refining the vegetation dynamic mechanism, and implementing a model inter-comparison project. PMID:24765870

  2. At NA2

    CERN Multimedia

    1977-01-01

    One of the NA2 calorimeter sections is moved in. The NA2 calorimeter was divided in two halves, to the left and the right of the beam, each half consisting of sheets of passive high Z material interleaved with blades of plastic scintillators. The photo shows on the right, the upstream 'electron' module with eleven lead plates for a total radiation length of 20.

  3. Vegetable variety: an effective strategy to increase vegetable intake in adults

    OpenAIRE

    Meengs, Jennifer S.; Roe, Liane S.; Rolls, Barbara J.

    2012-01-01

    Effective strategies are needed to increase vegetable intake in accordance with health recommendations. Previous research has shown that increasing the variety of foods leads to increased consumption, yet this strategy has not been investigated for promoting vegetable intake. This cross-over study tested whether filling half the plate with a variety of vegetables influences vegetable consumption and meal energy intake. Once a week for 4 weeks, a meal of pasta and cooked vegetables was consume...

  4. Evaluation of Three MODIS-Derived Vegetation Index Time Series for Dryland Vegetation Dynamics Monitoring

    OpenAIRE

    Linlin Lu; Claudia Kuenzer; Cuizhen Wang; Huadong Guo; Qingting Li

    2015-01-01

    Understanding the spatial and temporal dynamics of vegetation is essential in drylands. In this paper, we evaluated three vegetation indices, namely the Normalized Difference Vegetation Index (NDVI), the Soil-Adjusted Vegetation Index (SAVI) and the Enhanced Vegetation Index (EVI), derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) Surface-Reflectance Product in the Xinjiang Uygur Autonomous Region, China (XUAR), to assess index time series’ suitability for monitoring vege...

  5. Vegetables, fruit, and cancer prevention: a review.

    Science.gov (United States)

    Steinmetz, K A; Potter, J D

    1996-10-01

    In this review of the scientific literature on the relationship between vegetable and fruit consumption and risk of cancer, results from 206 human epidemiologic studies and 22 animal studies are summarized. The evidence for a protective effect of greater vegetable and fruit consumption is consistent for cancers of the stomach, esophagus, lung, oral cavity and pharynx, endometrium, pancreas, and colon. The types of vegetables or fruit that most often appear to be protective against cancer are raw vegetables, followed by allium vegetables, carrots, green vegetables, cruciferous vegetables, and tomatoes. Substances present in vegetables and fruit that may help protect against cancer, and their mechanisms, are also briefly reviewed; these include dithiolthiones, isothiocyanates, indole-3-carbinol, allium compounds, isoflavones, protease inhibitors, saponins, phytosterols, inositol hexaphosphate, vitamin C, D-limonene, lutein, folic acid, beta carotene, lycopene, selenium, vitamin E, flavonoids, and dietary fiber. Current US vegetable and fruit intake, which averages about 3.4 servings per day, is discussed, as are possible noncancer-related effects of increased vegetable and fruit consumption, including benefits against cardiovascular disease, diabetes, stroke, obesity, diverticulosis, and cataracts. Suggestions for dietitians to use in counseling persons toward increasing vegetable and fruit intake are presented.

  6. Research in remote sensing of vegetation

    Science.gov (United States)

    Schrumpf, Barry J.; Ripple, William J.; Isaacson, Dennis L.

    1988-01-01

    The research topics undertaken were primarily selected to further the understanding of fundamental relationships between electromagnetic energy measured from Earth orbiting satellites and terrestrial features, principally vegetation. Vegetation is an essential component in the soil formation process and the major factor in protecting and holding soil in place. Vegetation plays key roles in hydrological and nutrient cycles. Awareness of improvement or deterioration in the capacity of vegetation and the trends that those changes may indicate are, therefore, critical detections to make. A study of the relationships requires consideration of the various portions of the electromagnetic spectrum; characteristics of detector system; synergism that may be achieved by merging data from two or more detector systems or multiple dates of data; and vegetational characteristics. The vegetation of Oregon is sufficiently diverse as to provide ample opportunity to investigate the relationships suggested above several vegetation types.

  7. Estimating vegetation dryness to optimize fire risk assessment with spot vegetation satellite data in savanna ecosystems

    Science.gov (United States)

    Verbesselt, J.; Somers, B.; Lhermitte, S.; van Aardt, J.; Jonckheere, I.; Coppin, P.

    2005-10-01

    The lack of information on vegetation dryness prior to the use of fire as a management tool often leads to a significant deterioration of the savanna ecosystem. This paper therefore evaluated the capacity of SPOT VEGETATION time-series to monitor the vegetation dryness (i.e., vegetation moisture content per vegetation amount) in order to optimize fire risk assessment in the savanna ecosystem of Kruger National Park in South Africa. The integrated Relative Vegetation Index approach (iRVI) to quantify the amount of herbaceous biomass at the end of the rain season and the Accumulated Relative Normalized Difference vegetation index decrement (ARND) related to vegetation moisture content were selected. The iRVI and ARND related to vegetation amount and moisture content, respectively, were combined in order to monitor vegetation dryness and optimize fire risk assessment in the savanna ecosystems. In situ fire activity data was used to evaluate the significance of the iRVI and ARND to monitor vegetation dryness for fire risk assessment. Results from the binary logistic regression analysis confirmed that the assessment of fire risk was optimized by integration of both the vegetation quantity (iRVI) and vegetation moisture content (ARND) as statistically significant explanatory variables. Consequently, the integrated use of both iRVI and ARND to monitor vegetation dryness provides a more suitable tool for fire management and suppression compared to other traditional satellite-based fire risk assessment methods, only related to vegetation moisture content.

  8. Composição mineral de diversas hortaliças Mineral composition of several vegetable crops

    Directory of Open Access Journals (Sweden)

    A. M. C. Furlani

    1978-01-01

    Full Text Available Objetivou-se conhecer, na época normal de colheita, as quantidades de matéria seca acumuladas, as concentrações dos elementos essenciais às plantas, mais as de cobalto, alumínio e sódio na matéria fresca e seca de 50 cultivares de hortaliças num total de 35 espécies. As amostras, normalmente constituídas de produtos da colheita, foram na sua maioria procedentes da região de Campinas, Estado de São Paulo e separadas em: melancia - em casca + polpa branca, polpa vermelha e semente; melão - em casca + polpa e semente; ervilha - em vagem e grão; berinjela - em fruto e pedúnculo; couve-flor - em folha e inflorescência; beterraba, cenoura, nabo e rabanete - em folha e raiz; alcachofra - em folha + caule e inflorescência. Das demais hortaliças foram utilizados o fruto todo, as folhas ou os bulbos sem separação. Verificou-se que as leguminosas extraíram maiores quantidades de N, P, K, Mg, Cu, Mo, Zn e Co; as tuberosas, de Cl, Fe e Mn; as amarilidáceas, de S, B e Al; as folhosas, de Ca e Na. As cucurbitáceas extraíram menores quantidades da maioria dos nutrientes.This work reports the dry matter accumulation, the nutrient, Co, Al and Na - concentrations, and the removal of nutrients and Co, Al and Na per metric ton of fresh material of 35 species of vegetables by the harvest. The samples mostly came from the region of Campinas, State of São Paulo and consisted of the products removed from the field, fractioned in their several parts: watermelon in epicarp + white pulp, red pulp and seeds; eggplant in fruit and stalk; melon in epicarp + pulp and seeds; pea in shell and seeds; cauliflower in leaf and inflorescence; sugar beet, carrot, turnip and radish in leaf and root; artichoke in leaf + stalk and inflorescence. The whole fruit was utilized in the case of edible fruit bearing vegetables; the leaves in the case of the leafy vegetables; and the bulbous root in the case of the iffy-like vegetables. In general, the leguminous

  9. Y-virus krumpira na duhanu na Kosovu

    OpenAIRE

    Taraku, Nysret; Juretić, Nikola

    1991-01-01

    U prošlih nekoliko godina javlja se na duhanu na području Kosova vrlo agresivna virusna bolest zbog koje nastaju znatne gospodarske štete. Na oboljelim biljkama virus uzrokuje nekrotične promjene na listu, osobito nekroze žila, te mozaik. U ovom su radu istražena 4 virusna izolata (TI, T2, T3, T4) nađena na duhanu u okolici Gnjilana, Uroševca, Đakovice i Prizrena. Na osnovi istraživanja kruga domaćina, osobina in vitro, seroloških svojstava te studija mikroskopskih i submikroskopskih inkluzij...

  10. Application of the microbiological method DEFT/APC and DNA comet assay to detect ionizing radiation processing of minimally processed vegetables; Aplicacao do metodo microbiologico DEFT/APC e do teste do cometa na deteccao do tratamento com radiacao ionizante de hortalicas minimamente processadas

    Energy Technology Data Exchange (ETDEWEB)

    Araujo, Michel Mozeika

    2008-07-01

    Marketing of minimally processed vegetables (MPV) are gaining impetus due to its convenience, freshness and apparent healthy. However, minimal processing does not reduce pathogenic microorganisms to safe levels. Food irradiation is used to extend the shelf life and inactivation of food-borne pathogens, Its combination with minimal processing could improve the safety and quality of MPV. Two different food irradiation detection methods, a biological, the DEFT/APC, and another biochemical, the DNA Comet Assay were applied to MPV in order to test its applicability to detect irradiation treatment. DEFT/APC is a microbiological screening method based on the use of the direct epi fluorescent filter technique (DEFT) and the aerobic plate count (APC). DNA Comet Assay detects DNA damage due to ionizing radiation. Samples of lettuce, chard, watercress, dandelion, kale, chicory, spinach, cabbage from retail market were irradiated O.5 kGy and 1.0 kGy using a {sup 60} Co facility. Irradiation treatment guaranteed at least 2 log cycle reduction for aerobic and psychotropic microorganisms. In general, with increasing radiation doses, DEFT counts remained similar independent of irradiation processing while APC counts decreased gradually. The difference of the two counts gradually increased with dose increment in all samples. It could be suggested that a DEFT/APC difference over 2.0 log would be a criteria to judge if a MPV was treated by irradiation. DNA Comet Assay allowed distinguishing non-irradiated samples from irradiated ones, which showed different types of comets owing to DNA fragmentation. Both DEFT/APC method and DNA Comet Assay would be satisfactorily used as a screening method for indicating irradiation processing. (author)

  11. Efeito dos óleos vegetais de andiroba (Carapa sp. e Copaíba (Copaifera sp. sobre forídeo, pragas de colméias, (Diptera: Phoridae na Amazônia Central Effect of andiroba (Carapa sp. and copaiba's (Copaifera sp. vegetable oils on phorides, hives's prague (Diptera: Phoridae in Central Amazonia

    Directory of Open Access Journals (Sweden)

    Delci da Costa Brito Freire

    2006-01-01

    Full Text Available O conhecimento de substâncias repelentes para forídeos é um passo importante para a meliponicultura brasileira, pois esses insetos podem causar sérios danos às colméias de abelhas nativas. Os óleos de copaíba e andiroba, naturalmente encontrados na região amazônica, são muito utilizados pelos povos tradicionais da região como repelentes de insetos. Foi observado o efeito de dois óleos vegetais (andiroba e copaíba sobre a postura de ovos por fêmeas de forídeos em condições de laboratório. A postura das fêmeas foi realizada preferencialmente no substrato pólen e diferiu estatisticamente dos substratos contendo óleo de andiroba ou copaíba, nos quais houve considerável diminuição (até nenhuma postura, e do substrato contendo mel. Esses óleos são uma boa alternativa no controle preventivo e curativo dessa praga em colônias de Meliponineos, devido ao seu efeito repelente, ao baixo custo e disponibilidade na Região Amazônica.The knowlegment of repellants substances to phoride flies is an important step to the Brazilian stinglessbee beekeeping due to the serious damage to the native bee hives they can do. The copaiba and andiroba oils, found commonly in the Amazon region, are very employed by the traditional people as insects' repellants. We observed the effect of these oils over the phoride's laying in laboratory conditions. The female phoride's eggs occurred preferentially in the pollen substrate and statistically differed from those containing andiroba and copaiba oils, which was strongly reduced (until none eggs were laid, and from the substrate containing honey. These oils showed to be quite good alternative for this plague's preventive and curative control in stingless bee hives due to its repellant effect, low cost, and availability to get it in the region.

  12. Status of urban vegetation in Guangzhou City

    Institute of Scientific and Technical Information of China (English)

    GUAN Dong-sheng; CHEN Yu-juan

    2003-01-01

    According to a survey for the urban vegetation of Guangzhou, urban vegetation has a significantly difference from natural vegetation because of intense human impacts. The research was conducted in a synthetic survey for soil, species diversity, roadside trees and ecological function of urban vegetation in Guangzhou City. The results showed that: (1) soil densities of urban roadside and park forests were higher than mean density of natural forest soil. The pH values of soil in urban roadside were higher too, and the content of organic matter and the concentration of nitrogen were lower. (2) Species diversity of urban vegetation was lower. The most number of species was only 16 species in tree layers of urban forest. (3) Tree growth was limited by narrow space in high-density urban area, where the trees with defects and disorders were common. (4) Comparing with mature natural forests, the productivity of urban vegetation was lower. The effect of urban vegetation on balance of carbon and oxygen were influenced by the low primary production of urban vegetation. Therefore, the growth condition for urban vegetation should be improved. Biodiversity, primary production and ecological function should be increased for urban vegetation in order to improve urban eco-environment.

  13. Spatial Heterogeneity of Vegetation in China

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The spatial heterogeneity and ecological characteristics of 74 vegetation types and the lack of vegetation type within the 9.6 million km2 of Chinese territory were studied using data from the China vegetation map. The analysis used 877 large quadrats 10 mm×10 mm (actual size 100 km×100 km), which covered about 8.77 million km2. Each large-quadrat was divided into four small 5 mm×5 mm quadrats (actual size 50 km×50 km). The frequency of occurrence of all vegetation types was recorded in each small quadrat.The survey using the Shiyomi method of vegetation analysis based on the beta-binomial distribution was adopted to describe the frequency of occurrence and spatial heterogeneity for each kind of vegetation. The weighted average heterogeneity of all the vegetation types in the landscape provides a measure of the landscape level heterogeneity which describes the spatial intricacy of the existing vegetation composition.The maximum spatial vegetation heterogeneity was 0.8620 in the frigid-temperate coniferous forest of Larix(V1), which dominates cold moist northeast China. The minimum spatial heterogeneity with a low occurrence was the Caragana tibetica in the gravel desert in the western Yellow River Hetao area. The minimum occurrence with a low spatial heterogeneity was the Monsoon rainforest on rock in Guangxi and Yunnan Provinces. The vegetation types on the Qing-Zang Plateau were found to be representative of Chinese vegetation because of the very high occurrence and spatial heterogeneity of these vegetation types. The weighted average of the heterogeneity was 0.677, while the vegetation diversity index was 3.29.

  14. Vegetated shutter as solar protection

    Energy Technology Data Exchange (ETDEWEB)

    Alonso, J.; Olivieri, F.; Neila, F.J.; Bedoya, C. [Technical University of Madrid, Madrid (Spain)], email: fuskos@gmail.com

    2010-07-01

    With the increasing problem of urban heat islands, architects are looking into re-naturalizing the urban landscape. The implementation of green roof systems has been studied for decades but little research has been done on vegetal facades. The aim of this paper is to study the use of vegetation in the exterior enclosure layer of buildings. The system consists of a panel body, a planted container attached to a guiding device and which is hung up on an exterior blank wall. Simulations were carried out with computer programs to determine the device behavior. Results showed that the system can attenuate solar radiation from 5 to 50%, improve the ambient conditions, attenuate the urban heat island effect and reduce heat losses during winter. This study showed that mobile solar protection for glazed facades could be a good solution to minimize urban heat island effects and reduce energy consumption; field testing is expected to be performed in the near future in a social housing building.

  15. Satellite remote sensing of vegetation

    Science.gov (United States)

    Mahr, Tobias; Peper, Eva; Schubert, Alexander; Warnach, Simon; Pöhler, Denis; Horbanski, Martin; Beirle, Steffen; Mies, Kornelia; Platt, Ulrich; Wagner, Thomas

    2013-04-01

    DOAS (Differential Optical Absorption Spectroscopy) allows to determine the concentration of trace gases based on their specific absorptions cross-sections along a light path. Since 1995, this principle is employed successfully on satellite-based instruments like GOME, GOME-2 and SCIAMACHY for the global measurement of stratospheric and tropospheric trace gases like ozone and nitrogen oxides. Usually, spectral signatures from the ground, where a big part of the sunlight is reflected, are neglected in the evaluation. This can lead to errors in the trace gas determination. However, these structures offer the opportunity to identify surface properties of the earth and different types of vegetation. To analyse spectral reflectance properties, high resolved reflection spectra (FWHM 0.29 nm) from 95 plants were measured between 350 and 1050 nm. They can serve as a basis for the analysis of satellite data. Including different vegetation reference spectra, it is possible to determine groups of plants with similar optical properties. This allows to derive global maps of the spatio-temporal variation of plant distribution by satellite remote sensing. We present first results of this technique based on SCIAMACHY observations.

  16. Stereophotogrammetry in studies of riparian vegetation dynamics

    Science.gov (United States)

    Hortobagyi, Borbala; Vautier, Franck; Corenblit, Dov; Steiger, Johannes

    2014-05-01

    Riparian vegetation responds to hydrogeomorphic disturbances and also controls sediment deposition and erosion. Spatio-temporal riparian vegetation dynamics within fluvial corridors have been quantified in many studies using aerial photographs and GIS. However, this approach does not allow the consideration of woody vegetation growth rates (i.e. vertical dimension) which are fundamental when studying feedbacks between the processes of fluvial landform construction and vegetation establishment and succession. We built 3D photogrammetric models of vegetation height based on aerial argentic and digital photographs from sites of the Allier and Garonne Rivers (France). The models were realized at two different spatial scales and with two different methods. The "large" scale corresponds to the reach of the river corridor on the Allier river (photograph taken in 2009) and the "small" scale to river bars of the Allier (photographs taken in 2002, 2009) and Garonne Rivers (photographs taken in 2000, 2002, 2006 and 2010). At the corridor scale, we generated vegetation height models using an automatic procedure. This method is fast but can only be used with digital photographs. At the bar scale, we constructed the models manually using a 3D visualization on the screen. This technique showed good results for digital and also argentic photographs but is very time-consuming. A diachronic study was performed in order to investigate vegetation succession by distinguishing three different classes according to the vegetation height: herbs (4 m). Both methods, i.e. automatic and manual, were employed to study the evolution of the three vegetation classes and the recruitment of new vegetation patches. A comparison was conducted between the vegetation height given by models (automatic and manual) and the vegetation height measured in the field. The manually produced models (small scale) were of a precision of 0.5-1 m, allowing the quantification of woody vegetation growth rates. Thus

  17. Global change and climate-vegetation classification

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Three phrases of the quantitative study of climate-vegetation classification and their characteristics are presented based on the review of advance in climate-vegetation interaction, a key issue of "global change and terrestrial ecosystems (GCTE)" which is the core project of International Geosphere-Biosphere Programme (IGBP): (ⅰ) characterized by the correlation between natural vegetation types and climate; (ⅱ) characterized by climatic indices which have obviously been restricted to plant ecophysiology; (ⅲ) characterized by coupling both structure and function of vegetation. Thus, the prospective of climate-vegetation classification for global change study in China was proposed, especially the study coupling climate-vegetation classification models with atmospheric general circulation models (GCMs) was emphasized.

  18. A vegetal Geiger counter; Un compteur Geiger vegetal

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    1999-01-01

    In order to study the Chernobyl accident impact on ecosystems, Ukrainian and Swiss scientists have used a plant: the Arabidopsis thaliana. They have introduced in its genome a gene coding an enzyme called {beta}-glucuronidase. This substance, when it is expressed, colours vegetal cells blue. In fact the introduced gene is divided between 2 paired chromosomes. When the plant is placed on a nuclear contaminated soil, radiation damaged chromosomes exchange fragments and the 2 parts of the enzyme gene may recombine, the enzyme can then be expressed. For low and medium contamination (<900 Ci/km{sup 2}) biologists have found a correlation between the number of blue spots on the plant and the irradiation rate. (A.C.)

  19. MOBING NA DELOVNEM MESTU

    OpenAIRE

    Mraz, Darja

    2011-01-01

    Mobing pomeni načrtno psihično nasilje,trpinčenje in šikaniranje,ki žrtev privede do socialne izolacije.Proces mobinga poteka skozi štiri faze.Začne se s konfliktom in nadaljuje z uveljavitvijo mobinga v obliki stalnih napadov,vse skupaj pa se lahko konča z izključitvijo iz delovnega življenja.Ključni dejavniki mobinga so stres pri delu,način vodenja ter slabo vzdušje med zaposlenimi in vodstvom.

  20. Study of the market for organic vegetables

    OpenAIRE

    Firth, C.; Geen, N; Hitchings, R

    2003-01-01

    This project was led and conducted by HDRA, in collaboration with the Soil Association, Elm Farm Research Centre and The Institute of Rural Studies, Aberystwyth. Data was collected from UK packers and wholesalers of organic vegetables on the amounts, value and source of organic vegetables traded during the 2001/02 season. This was supplemented with crop area data from the organic certification bodies on the area of organic vegetable crops grown in the season. All data was cross-referenced wit...

  1. Studies of air pollution effects on vegetation

    Energy Technology Data Exchange (ETDEWEB)

    1978-01-01

    The report consists of three parts which summarize pollutant-vegetation effects research studies. These include: oxidant effects of primary productivity in ponderosa pine in the San Bernardino National Forest; air pollution effects on vegetation related to geothermal power development; and regional assessment of air pollution impact on vegetation by mathematical modeling. A list of publications that report results of the studies is included in an appendix.

  2. Sensory evaluation of organic, processed vegetables

    OpenAIRE

    Kidmose, Ulla; Christensen, Lars P.; Brandt, Kirsten; Thybo, Anette

    2005-01-01

    In the project “Organic food and health – a multigeneration animal experiment” that was carried out from 2001-2004 as a part of the Danish Research Centre for Organic Farming II programme, focus was on the health beneficial effect of vegetable food as affected by different cultivation systems, including organic and conventional cultivation systems. Vegetable based feed compositions produced from vegetables that were harvested from the different cultivation systems were tested in animal experi...

  3. Hydraulic Resistance due to Emergent Wetland Vegetation

    OpenAIRE

    Piercy, Candice Dawn

    2010-01-01

    Models to estimate hydraulic resistance due to vegetation in emergent wetlands are crucial to wetland design and management. Hydraulic models that consider vegetation rely on an accurate determination of a resistance parameter such as a friction factor or a bulk drag coefficient. At low Reynolds numbers typical of flows in wetlands, hydraulic resistance is orders of magnitude higher than fully turbulent flows and resistance parameters are functions of the flow regime as well as the vegetation...

  4. Advances in transgenic vegetable and fruit breeding

    OpenAIRE

    Dias, João Silva; Ortiz Rios, Rodomiro Octavio

    2014-01-01

    Vegetables and fruits are grown worldwide and play an important role in human diets because they provide vitamins, minerals, dietary fiber, and phytochemicals. Vegetables and fruits are also associated with improvement of gastrointestinal health, good vision, and reduced risk of heart disease, stroke, chronic diseases such as diabetes, and some forms of cancer. Vegetable and fruit production suffers from many biotic stresses caused by pathogens, pests, and weeds and requires high amounts of p...

  5. Monitoring vegetation using DOAS satellite observations

    Science.gov (United States)

    Eigemeier, Ellen; Beirle, Steffen; Marbach, Thierry; Platt, Ulrich; Wagner, Thomas

    2010-05-01

    Vegetation-cycles are of general interest for many applications. Be it for harvest-predictions, global monitoring of climate-change or as input to atmospheric models. From novel spectrally resolving UV/vis satellite instruments (like GOME or SCIAMACHY) the spectral signatures of different types of vegetation can be identified and analysed. Although the spatial resolution of GOME and SCIAMACHY observations is much coarser than those of conventional satellite instruments for vegetation monitoring, our data sets on different vegetation types add new and useful information, not obtainable from other sources. Common vegetation indices are based on the fact that the difference between Red and Near Infrared reflection is higher than in any other material on Earth's surface. This gives a very high degree of confidence for vegetation-detection. The spectrally resolving data from GOME and SCIAMACHY provide the chance to concentrate on finer spectral features throughout the red and near infrared spectrum. We look at these features using a technique known as Differential Optical Absorption Spectroscopy (DOAS). Although originally developed to retrieve information on trace gases, it can also be used to gain information on vegetation. Another advantage is that this method automatically corrects for atmospheric effects. This renders the vegetation-information easily comparable over long time-spans. In addition, high-frequency-structures from vegetation also effect the retrieval of tropospheric trace-gases and aerosols. To optimize vegetation monitoring with DOAS we produce spectrally resolved reference spectra from different vegetation types using our own instrumentation. We analyze the effect of different Pigments on high-frequency-structures of the DOAS Retrieval. Applying these results we investigate how well we can distinguish vegetation types from space.

  6. Nutritional Evaluation of Some Legumes and Vegetables Cultivated and Consumed in Yola, Adamawa State, Nigeria

    Directory of Open Access Journals (Sweden)

    S. Sarkiyayi

    2015-03-01

    Full Text Available The study was designed to evaluate the nutritional and anti-nutritional content Legumes and vegetables consumed in Adamawa state. The investigations were carried out on Proximate (Moisture, fibre, Ash, Protein, Nitrogen, fat, carbohydrate and Energy, mineral elements (Na, K, Zn, Cu, Pb and Mn, respectively. Vitamins (vitamin A (retinol, &beta-carotene, Vitamin C, Vitamin E, Vitamin B1 and Vitamin B2 and Anti-ntrient composition (phytate, oxalate and Tannins. The percentage moisture ranges between 4.28% for baobab leaves to 12.78% in sesame leaves. Legumes contained higher protein contents, the highest was observed in legumes (ground nut with 25.40% the percentage for fat and carbohydrates were higher in legumes than in vegetables. Zinc was higher in vegetables (senna leaves and sesame leaves (5.90 mg/kg and was absent in one of the legumes (cowpea, red. Lead was only detected in vegetable leaves. It was higher in Sesame leaves with 2.0 mg/kg, lead was not detected in all the other sample used for this research. Vitamin A was only detected in vegetable samples and some legume (cowpea, the values ranges between 7.46 to 37.42 µg/100 g in senna leaves and cowpea (red respectively. Vitamin C was not detected in the vegetable samples, but was detected in legume samples. Vitamin B1 is higher in vegetable samples (baobab with 1.32 mg/100 g. Riboflavin (B2 was higher in sesame leaves with 1.01 mg/100 g. The values for phytate ranges between 0.03 mg/100 g in baobab and sesame leaves condiment sample to 5.33 mg/100 g in legume (cowpea, red respectively. Legumes and vegetables investigated revealed that the anti-nutrient contents were very high especially Oxalate and tannins but lower in phytate.

  7. MONITORING VEGETATION CHANGE IN THE NETHERLANDS

    Directory of Open Access Journals (Sweden)

    P: BREMER

    2007-01-01

    Full Text Available The Dutch national vegetation monitoring scheme collects sample-based surveillance data at a national scale. The objectives are (i to assess if changes in eutrophication, acidification and desiccation lead to changes in the vegetation of natural habitats and (ii to assess changes in botanical quality of natural habitats and farmland and (iii to assess botanical changes in verges of traffic highways. The first results demonstrated that the national monitoring scheme is sensitive enough to track relevant changes in the vegetation. Examples are the increasing coverage of shrubs in natural areas and the signs of recovery of the vegetation of wet dune valleys in areas with hydrological measures.

  8. Wetland vegetation establishment in L-Lake

    Energy Technology Data Exchange (ETDEWEB)

    Kroeger, S.R.

    1990-07-01

    Wetland vegetation was transplanted from PAR Pond to L-Lake between January and August, 1987. Approximately 100,000 individual plants representing over 40 species were transplanted along the southern shoreline. Three zones of vegetation were created: (1) submersed/floating-leaved, (2) emergent, (3) upper emergent/shrub. During the summers of 1987, 1988, 1989, the Savannah River Ecology Laboratory sampled the vegetation in 54 permanent transects located in planted (N=32) and unplanted areas (N=22). The 1989 vegetation data from L-Lake were compared to 1985 data from PAR Pond.

  9. US Forest Service LANDFIRE Potential Vegetation

    Data.gov (United States)

    US Forest Service, Department of Agriculture — LANDFIRE Potential Vegetation is mapped using predictive landscape models based on extensive field-referenced data and biophysical gradient layers using...

  10. Wetland vegetation establishment in L-Lake

    International Nuclear Information System (INIS)

    Wetland vegetation was transplanted from PAR Pond to L-Lake between January and August, 1987. Approximately 100,000 individual plants representing over 40 species were transplanted along the southern shoreline. Three zones of vegetation were created: (1) submersed/floating-leaved, (2) emergent, (3) upper emergent/shrub. During the summers of 1987, 1988, 1989, the Savannah River Ecology Laboratory sampled the vegetation in 54 permanent transects located in planted (N=32) and unplanted areas (N=22). The 1989 vegetation data from L-Lake were compared to 1985 data from PAR Pond

  11. Anatomia dos órgãos vegetativos de Dieffenbachia picta Schott (Araceae com ênfase na distribuição de cristais, laticíferos e grãos de amido Anatomy of the vegetative organs from Dieffenbachia picta Schott (Araceae with an emphasis on crystals, laticifers and starch grains

    Directory of Open Access Journals (Sweden)

    Leandro de Santis Ferreira

    2006-12-01

    Full Text Available A distribuição dos cristais, laticíferos e grãos de amido foi estudada nos órgãos vegetativos de Dieffenbachia picta Schott (Araceae, conhecida por comigo-ninguém-pode, por tais estruturas serem citadas como responsáveis pela irritação mecânica e química provocada pela planta. A anatomia da folha, do caule aéreo, do rizoma e da raiz foi descrita por meio de seções histológicas coradas com azul de toluidina. A natureza química dos cristais e a presença de lipídios, alcalóides, grãos de amido e proteínas foram verificadas por reagentes diversos. Drusas e ráfides de oxalato de cálcio, associadas a lipídios, alcalóides e proteínas, ocorreram no interior de células presentes no parênquima de todos os órgãos, no colênquima caulinar e nos meristemas da raiz. O tempo de dissolução dos cristais das folhas jovem e adulta foi semelhante, o do caule foi maior que o da folha e o do rizoma maior que o da raiz. Grãos de amido, associados a proteínas, ocorreram no clorênquima do caule aéreo (forma de bastonetes e rizoma (formas esférica e bastonete. Laticíferos ocorreram entremeando o colênquima e o parênquima; o látex continha ráfides, alcalóides e lipídios. Maior número de idioblastos cristalíferos e laticíferos foi observado no caule aéreo, sendo este, portanto, o órgão que mais representa perigo.We studied the distribution of crystals, laticifers and starch grains of the vegetative organs from dumb cane, Dieffenbachia picta Schott (Araceae, known in Brazil as "comigo-ninguém-pode" for such structures are meant to be responsible for mechanical and chemical irritation events carried out by the plant. We described the anatomy of leaves, aerial stems, rhizomes and roots with histological sections dyed in toluidine blue. We checked the chemical nature of crystals and the presence of lipids, alkaloids, starch grains and proteins with various reagents. Druses and calcium oxalate raphides - associated with lipids

  12. Implantes de resina de poliuretana vegetal (Ricinus communis na tração linear, fixação e fusão vertebral no cão: estudo experimental Implants of Ricinus communis polyurethane resin in distraction, fixation and vertebral fusion in dogs: experimental study

    Directory of Open Access Journals (Sweden)

    M.G. Laranjeira

    2004-10-01

    Full Text Available Placa e espaçador de polímero derivado do óleo de mamona (PDOM (Ricinus communis foram avaliados clínica, radiográfica e histologicamente na tração linear, fixação e fusão vertebral cervical em 20 cães adultos, sem raça definida, pesando entre 17 e 22kg. Foram sacrificados quatro animais aos 10, 30, 60, 90 e 120 dias de pós-operatório. Após exposição da coluna cervical, por acesso ventral, o disco intervertebral de C4-C5 foi fenestrado e a abordagem ao canal medular foi feita por meio de fenda óssea. Um espaçador de PDOM foi colocado preenchendo o defeito ósseo. Os corpos vertebrais C4-C5 foram fixados com placa do mesmo material, utilizando-se dois parafusos corticais em cada corpo vertebral. Apenas um animal apresentou déficit neurológico no pós-operatório imediato. Radiograficamente as vértebras mostravam-se normais e alinhadas, sem colapso do espaço intervertebral, porém não houve neoformação óssea entre as vértebras. Ao exame mielográfico, não houve compressão da medula espinhal. Os implantes foram efetivos em manter a tração linear e fixação das vértebras cervicais e não ocorreu a fusão vertebral.Clinical, radiographic and histological evaluation of plate and biomechanical spacer of Ricinus communis polyurethane resin were performed in distraction, fixation and vertebral cervical fusion in 20 adult dogs, weighting between 17 and 22kg. Four animals were euthanized at 10, 30, 60, 90 and 120 days after surgery. After ventral exposition of cervical spine, cervical disk fenestration was performed on intervertebral spaces C4-C5 and a slot was created. A biomechanical spacer of Ricinus communis polyurethane resin was placed to fill bone defect. C4-C5 spinous processes were fixed with plate of the same material, utilizing two cortical screws in each spinal process. Only one animal had neurological signs immediately after surgery. Radiographic examination indicated that vertebrae were normal and aligned

  13. AVALIAÇÃO DE CARACTERES VEGETATIVOS DE HÍBRIDOS DE COQUEIRO (COCOS NUCIFERA L. NA REGIÃO NÃO PANTANOSA DO MUNICÍPIO DE POCONÉ, MT VEGETATIVE COCONUT PALM HYBRID (Cocos nucifera L. BEHAVIOR ON NON MARSHY AREA OF POCONÉ (MT-BRAZIL

    Directory of Open Access Journals (Sweden)

    HUMBERTO DE CARVALHO MARCILIO

    2001-08-01

    Full Text Available O presente estudo foi realizado entre março de 1999 e março de 2000, na região de Cangas, município de Poconé, MT, com a finalidade de estudar o desenvolvimento inicial de híbridos intervarietais de coqueiros, avaliados para as características: circunferência do coleto (CC, número de folhas vivas (NFV, número de folhas emitidas (NFE, número de folíolos da folha 3 (NFoF3, comprimento de folíolos da folha3 (CFoF3, comprimento da folha 3 (CF3 e comprimento do pecíolo da folha 3 (CPF3. Utilizou-se o delineamento experimental em blocos casualizados, com quatro repetições e cinco tratamentos, tendo em cada parcela 16 plantas úteis. Os resultados das análises estatísticas demonstraram haver diferença significativa para todas as características. O híbrido AVG x GBrPF foi o que melhor expressou o "vigor híbrido" com maiores CC, NFoF3, CFoF3 e CF3. Por outro lado, o AVeJ x GBrRN apresentou os menores valores para estas características, embora tenha expressado o melhor resultado para NFE e NFV nas avaliações finais.This study was accomplished form March, 1999 up to march 2000, in Cangas, Poconé, Mato Grosso, Brazil. It aimed studying the initial development of hybrid coconut palms (Dwarf x Tall, by evaluating the characteristics: girth circunference (CC; live number of leaves (NFV; emitted leaves number of (NFE; number of leaflets at leaf 3 (NFoF3; leaflets length at leaf 3 (NFoF3; leaf 3 length (CF3 and petiole length at leaf 3 (CPF3. The experimental design used was casual blocks with four repetitions and five treatments, each plot had 16 useful plants. The statistical analysis results showed a significant difference for all characteristics. The AVG x GBrPF hybrid showed the best "hybrid vigor" with greater CC, NFoF3, CFoF3 and CF3. On the other hand, the AVeJ x GBrRN hybrid showed the smallest values for these characteristics, although it has expressed best result for NFE and NFV at final evaluations.

  14. Spatial Vegetation Data for Whiskeytown National Recreation Area Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — High resolution vegetation polygons mapped by the National Park Service. These data describe vegetation for the Whiskeytown National Recreation Area through the...

  15. Spatial Vegetation Data for Sagamore Hill National Historic Site Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This shapefile is the final vegetation map of Sagamore Hill National Historic Site that provides local names for vegetation types, as well as crosswalks to the...

  16. Spatial Vegetation Data for Allegheny Portage Railroad National Historic Site Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — Vegetation map of Allegheny Portage Railroad National Historic Site provides local park-specific names for vegetation types, as well as crosswalks to the National...

  17. Spatial Vegetation Data for Canyon De Chelly National Monument Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The Canyon de Chelly National Monument Vegetation Map Database was developed as a primary product in the Canyon de Chelly National Monument Vegetation...

  18. Spatial Vegetation Data for Mesa Verde National Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The Mesa Verde National Park Vegetation Map Database was developed as a primary product in the Mesa Verde National Park Vegetation Classification, Distribution, and...

  19. Spatial Vegetation Data for Sequoia and Kings Canyon National Parks Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — High resolution vegetation polygons mapped by the National Park Service. The Vegetation Map of Sequoia and Kings Canyon National Parks was produced over an eight...

  20. Spatial Vegetation Data for Upper Delaware Scenic and Recreational River Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — Vegetation map of the Upper Delaware Scenic and Recreational River provides local park-specific names for vegetation types, as well as crosswalks to the National...

  1. Spatial Vegetation Data for Sand Creek Massacre National Historic Site Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — High resolution vegetation polygons mapped by the National Park Service. Multivariate ordination and clustering analyses were used to classify the vegetation. As a...

  2. Spatial Vegetation Data for Petrified Forest National Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The Petrified Forest National Park Vegetation Map Database was developed as a primary product in the Petrified Forest National Park Vegetation Classification,...

  3. Spatial Vegetation Data for Valley Forge National Historical Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The vegetation and landcover of Valley Forge National Historical Park (VAFO) were mapped to the association level of the National Vegetation Classification System...

  4. Spatial Vegetation Data for Ozark National Scenic Riverways Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — High resolution vegetation polygons mapped by the National Park Service. This is a map of vegetation associations with 49- and 33-class maps (see table tVegMapInfo...

  5. Spatial Vegetation Data for Bluestone National Scenic River Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This data represents a vegetation map for Bluestone National Scenic River. It contains nonoverlapping polygons which represent vegetation classes, aquatic features,...

  6. Spatial Vegetation Data for Fort Union National Monument Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — High resolution vegetation polygons mapped by the National Park Service. This detailed vegetation map for Fort Union National Monument is based on the National...

  7. Spatial Vegetation Data for Weir Farm National Historic Site Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This shapefile is a vegetation map of Weir Farm National Historic Site, Connecticut. A map showing the locations of the vegetation associations within the park was...

  8. Spatial Vegetation Data for Fire Island National Seashore Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This dataset is the finished product of the NPS Vegetation Mapping Project at Fire Island National Seashore. This dataset depicts the association-level vegetation...

  9. At NA3

    CERN Multimedia

    1978-01-01

    The photo shows the proportional chamber PC1 of the NA3 forward spectrometer. The chamber was placed downstream the beam dump and specially designed to support a high flux of particles, see Nucl. Instrum. Methods 175 (1980) 319. Anta Diop stands on the foreground, right.

  10. The NA35 experiment

    CERN Multimedia

    1987-01-01

    The NA35 experiment ran on the Super Proton Synchrotron (SPS) accelerator at CERN. It was used for the study of relativistic nucleus-nucleus collisions which were used to search for evidence of new types of quark matter. Quarks are found inside protons and neutrons, which in turn make up atoms.

  11. Riso na epilepsia

    Directory of Open Access Journals (Sweden)

    Edymar Jardim

    1967-06-01

    Full Text Available São estudados três casos de síndrome convulsiva temporal, com manifestações concomitantes de riso na sua fase inicial. As características principais foram a imotivação e á incoercibilidade do riso. Esses sintomas desapareceram com o uso de anticonvulsivantes.

  12. At NA5

    CERN Multimedia

    1978-01-01

    The NA5 experiment is shown at the start of the setting up in beam H2 of hall EHN1. It was designed by the Bari- Cracow-Liverpool-Munich (MPI) Collaboration to study hard hadron-hadron collisions with a streamer chamber vertex spectrometer and a calorimeter trigger. The beam from target T2 enters from the left. E

  13. Konstrukce sila na cukr

    OpenAIRE

    Kotík, Libor

    2015-01-01

    Předmětem diplomové práce je statický návrh a posudek předpjatého sila na 50000t cukru. Zpracován je výpočtový model ocelové střešní konstrukce a jeho působení na konstrukci sila. Je stanoveno zatížení od uskladněného cukru. Je proveden optimální návrh a posouzení na mezní stav použitelnosti a únosnosti betonářské výztuže a vodorovného předpětí stěny sila včetně lokálních namáhání. Dále je proveden návrh betonářské výztuže dna sila a sloupu v podsilí a posouzení na mezní stav únosnosti. Součá...

  14. Biotecnologia na agricultura

    Directory of Open Access Journals (Sweden)

    Helaine Carrer

    2010-01-01

    Full Text Available A expectativa de o crescimento populacional atingir 9 bilhões de habitantes em 2050 em adição às questões da sustentabilidade e do aquecimento global nos desafiam a aumentar a oferta de alimentos. Uma metodologia alternativa que contribua para a redução do impacto desse cenário envolve a biotecnologia, que, nas últimas décadas, trouxe marcantes oportunidades tecnológicas na agricultura, resultando em relevante desenvolvimento na obtenção de novas variedades de plantas, na melhoria da qualidade de diversos alimentos e atualmente também na bioenergia. As técnicas biotecnológicas envolvendo os marcadores moleculares, a genômica e a transformação genética estão transformando a agricultura e são discutidas neste artigo.The expected population growth to reach 9 billion by 2050 in addition to issues of sustainability and global warming challenges us to increase the supply of food. An alternative approach to help reducing the impact of this scenario involves biotechnology which in recent decades has brought remarkable technological opportunities in the agriculture that resulted in relevant development in obtaining new plant varieties, improved quality of different foods, and now also in bioenergy. The biotechnology techniques involving molecular markers, genomics and genetic transformation are transforming agriculture and will be discussed in this article.

  15. Vegetable oil basestocks for lubricants

    Directory of Open Access Journals (Sweden)

    Garcés, Rafael

    2011-03-01

    Full Text Available The use of vegetable biodegradable basestocks for lubricant oils present several advantages over the much more extended mineral bases. These advantages refer to biodegradability, a renewable feedstock of local production, lubricant and viscosity index and lower costs than synthetic lubricant bases. Despite these benefits, their use in industry and motor vehicles is not yet extensive due their lower stability and higher pour points. Vegetable oils are esters of fatty acids and glycerol, and their physicochemical properties rely mainly on the composition of their acyl moieties. Thus, to assure the maximum levels of stability while maintaining acceptable behavior at low temperatures, monounsaturated fatty acids are preferred for this purpose. The presence of natural antioxidants also improves the properties of these vegetable based stocks as lubricants. These oils usually require additives to improve their viscosity value, oxidative stability and properties at low temperatures. In the present work, the different sources of vegetable oils appropriate for biolubricant production were reviewed. Their properties and the future improvement of the oil bases, oil based stock production, uses and additives are discussed.

    El uso de bases vegetales biodegradables para aceites lubricantes presenta varias ventajas sobre las mucho más extendidas bases minerales. Estas ventajas se centran sobre todo en su biodegradabilidad, en ser un recurso renovable de producción local, en su lubricidad y en su índice de viscosidad, presentando además costes más bajos que las bases sintéticas. Sin embargo, estas ventajas no han extendido el uso de bases vegetales ni en industria ni en automoción debido a su menor estabilidad y sus mayores puntos críticos de fluidez. Los aceites vegetales son ésteres de ácidos grasos y glicerol y sus propiedades físico-químicas dependen principalmente de su composición acílica. Así, para asegurar los máximos niveles de

  16. Reaction of Three Strawberry Cultivars to the Salinity: Vegetative Parameters

    Directory of Open Access Journals (Sweden)

    Ante Biško

    2010-06-01

    Full Text Available The study aimed at analysing the reaction of three strawberry Fragaria x ananassa Duch. cultivars to the salinity (0-control, 0.5, 1.0, 2.0, 3.0 and 4.0 g of NaCl L-1 in the irrigation water: equivalent of the following EC values: (0.73, 1.65, 2.66, 4.37, 5.93 and 7.81 mS cm-1. Vegetative trial was carried out at the Faculty of Agriculture in Zagreb during 1997 and 1998. Following parameters were tested: degrees of damage of shoots, number of leaves, number of runners (stolons, yield of fresh biomass and dry matter of shoots and roots, and percentage of dry matter of shoots and roots. Tested cultivars showed significant differences of the level of damage (necrosis and decay of plants due to high NaCl concentration. The highest degree of damage was shown by ‘Elsanta’ in both trial years, followed by ‘Marmolada’ and ‘Miranda’ respectively. The analysis of the number of leaves and stolons confirmed the same trend. The yield of fresh biomass and dry matter of shoots and roots was significantly reduced with the application of NaCl. ‘Miranda’ was characterised by the highest fresh biomass and dry matter yield, followed by ‘Marmolada’ and ‘Elsanta’. Average decrease of fresh biomass yield of shoots in comparison to the control was 45, 33 and 22% in ‘Elsanta’, ‘Marmolada’ and ‘Miranda’. Dry matter yield of shoots decreased correspondingly for 34, 28 and 18%. Total dry matter yield (shoots + roots of ‘Elsanta’ was significantly reduced at 0.5 g NaCl L-1 and of ‘Marmolada’ and ‘Miranda’ at 1.0 and 2.0 g L-1 respectively.

  17. The study of Sr 90 biological accessibility for vegetable cultures in condition of vegetative experiment

    International Nuclear Information System (INIS)

    Different vegetable cultures (white cabbage, carrot and beetroot) were used for study of regularities of Sr 90 accumulation by plant vegetative organs. Experiment was made on soil with artificially invested water-soluble Sr 90 (cumulative activity 746 Bq/kg). As a result vegetable tissue can be put in a row by accumulative level: leaf mesophile > tectorial tissue > xylem > phloem

  18. Children and vegetables: strategies to increase children’s liking and intake of vegetables

    NARCIS (Netherlands)

    Wild, de V.W.T.

    2015-01-01

    Background and aim Children’s vegetable intake is far below that recommended. Despite increased awareness of the importance of vegetable consumption for health, it remains challenging to improve children’s vegetable intake. Since food preferences are central to food inta

  19. Projected future changes in vegetation in western North America in the 21st century

    Science.gov (United States)

    Xiaoyan, Jiang; Rauscher, Sara A.; Ringler, Todd D.; Lawrence, David M.; Williams, A. Park; Allen, Craig D.; Steiner, Allison L.; Cai, D. Michael; McDowell, Nate G.

    2013-01-01

    Rapid and broad-scale forest mortality associated with recent droughts, rising temperature, and insect outbreaks has been observed over western North America (NA). Climate models project additional future warming and increasing drought and water stress for this region. To assess future potential changes in vegetation distributions in western NA, the Community Earth System Model (CESM) coupled with its Dynamic Global Vegetation Model (DGVM) was used under the future A2 emissions scenario. To better span uncertainties in future climate, eight sea surface temperature (SST) projections provided by phase 3 of the Coupled Model Intercomparison Project (CMIP3) were employed as boundary conditions. There is a broad consensus among the simulations, despite differences in the simulated climate trajectories across the ensemble, that about half of the needleleaf evergreen tree coverage (from 24% to 11%) will disappear, coincident with a 14% (from 11% to 25%) increase in shrubs and grasses by the end of the twenty-first century in western NA, with most of the change occurring over the latter half of the twenty-first century. The net impact is a ~6 GtC or about 50% decrease in projected ecosystem carbon storage in this region. The findings suggest a potential for a widespread shift from tree-dominated landscapes to shrub and grass-dominated landscapes in western NA because of future warming and consequent increases in water deficits. These results highlight the need for improved process-based understanding of vegetation dynamics, particularly including mortality and the subsequent incorporation of these mechanisms into earth system models to better quantify the vulnerability of western NA forests under climate change.

  20. Repelência e deterrência na oviposição de Bemisia tabaci biótipo B pelo uso de extratos vegetais em Cucurbita pepo L Repellence and deterrence on oviposition of Bemisia tabaci biotype B by the use of vegetal extracts in Cucurbita pepo L

    Directory of Open Access Journals (Sweden)

    J.P.G.F. Silva

    2012-01-01

    Full Text Available Bemisia tabaci biótipo B é um dos principais insetos-praga na cultura da abobrinha (Cucurbita pepo L.. O manejo dessa mosca-branca tornou-se grande desafio aos agricultores, uma vez que esta apresenta rápida capacidade de desenvolver resistência a diferentes classes de inseticidas. Como alternativa vem sendo investigado o uso de extratos vegetais com atividades inseticida e/ou insetistática, os quais têm revelado resultados promissores no combate a inseto. O presente trabalho teve por objetivo avaliar os possíveis efeitos de sete extratos provenientes de cinco espécies vegetais, Ruta graveolens L. (folhas, Azadirachta indica A. Juss. (folhas + ramos, Trichilia pallida Swartz (ramos, T. pallida (folhas, A. indica (amêndoas, Chenopodium ambrosioides L. (inflorescências + ramos+ folhas e Mentha pulegium L. (folhas, sobre Bemisia tabaci biótipo B em abobrinha, por meio de testes de repelência e deterrência para oviposição. Em teste com chance de escolha, avaliou-se a atratividade e determinou-se o índice de repelência após 6, 24 e 48 horas da aplicação dos extratos. A oviposição foi verificada após a terceira contagem do número de adultos. O extrato à base de folhas de M. pulegium mostrou repelência e deterrência à oviposição de B. tabaci biótipo B, podendo ser recomendado como alternativa para o manejo do inseto.Bemisia tabaci biotype B is one of the main pests in squash (Cucurbita pepo L.. The management of this whitefly has become a major challenge to growers, since they have the ability to quickly develop resistance to different classes of insecticides. Alternatively, the use of plant extracts with insecticide and/or insectistatic activities has been investigated, showing promising results for the whitefly control. The present study evaluated the possible effects of seven extracts from five plant species, Ruta graveolens L. (leaves, Azadirachta indica A. Juss. (leaves + branches, Trichilia pallida Swartz (branches

  1. Understory Vegetation Inventory: An Efficient Procedure

    OpenAIRE

    United States Department of Agriculture, Forest Service

    1983-01-01

    The Understory Vegetation Inventory Procedure used on Forest Survey plots provides some basic information about the plant community that, when combined with other information, can be used for wildlife habitat and forage evaluation, grazing use potential, potential climax and seral stage of vegetation, and estimation of land productivity in terms of biomass.

  2. 21 CFR 73.260 - Vegetable juice.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 1 2010-04-01 2010-04-01 false Vegetable juice. 73.260 Section 73.260 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL LISTING OF COLOR ADDITIVES EXEMPT FROM CERTIFICATION Foods § 73.260 Vegetable juice. (a) Identity. (1) The color...

  3. Food design strategies to increase vegetable intake

    NARCIS (Netherlands)

    Oliviero, Teresa; Fogliano, Vincenzo

    2016-01-01

    Background: Public campaigns promoting consumption of fruits and vegetables had limited results as consumers habits are difficult to modify. The incorporation of fruits and vegetables into regularly eaten products is a food design strategy that leads to several advantages. Pasta is a staple food

  4. Hydraulic Aspects of Vegetation Maintanence in Streams

    DEFF Research Database (Denmark)

    Larsen, Torben; Vestergaard, Kristian

    1991-01-01

    This paper describes the importance of the underwater vegetation on Danish streams and some of the consequences of vegetation maintenance. the influence of the weed on the hydraulic conditions is studied through experiments in a smaller stream and the effect of cutting channels through the weed...

  5. Effects of aquatic vegetation type on denitrification

    NARCIS (Netherlands)

    Veraart, A.J.; Bruijne, de W.J.J.; Peeters, E.T.H.M.; Klein, de J.J.M.; Scheffer, M.

    2011-01-01

    In a microcosm 15N enrichment experiment we tested the effect of floating vegetation (Lemna sp.) and submerged vegetation (Elodea nuttallii) on denitrification rates, and compared it to systems without macrophytes. Oxygen concentration, and thus photosynthesis, plays an important role in regulating

  6. Fruits, vegetables and coronary heart disease.

    Science.gov (United States)

    Dauchet, Luc; Amouyel, Philippe; Dallongeville, Jean

    2009-09-01

    Diet plays an important part in the maintenance of optimal cardiovascular health. This Review summarizes the evidence for a relationship between fruit and vegetable consumption and the occurrence of coronary heart disease. This evidence is based on observational cohort studies, nutrition prevention trials with fruit and vegetables, and investigations of the effects of fruit and vegetables on cardiovascular risk factors. Most of the evidence supporting a cardioprotective effect comes from observational epidemiological studies; these studies have reported either weak or nonsignificant associations. Controlled nutritional prevention trials are scarce and the existing data do not show any clear protective effects of fruit and vegetables on coronary heart disease. Under rigorously controlled experimental conditions, fruit and vegetable consumption is associated with a decrease in blood pressure, which is an important cardiovascular risk factor. However, the effects of fruit and vegetable consumption on plasma lipid levels, diabetes, and body weight have not yet been thoroughly explored. Finally, the hypothesis that nutrients in fruit and vegetables have a protective role in reducing the formation of atherosclerotic plaques and preventing complications of atherosclerosis has not been tested in prevention trials. Evidence that fruit and vegetable consumption reduces the risk of cardiovascular disease remains scarce thus far.

  7. A Reference Unit on Home Vegetable Gardening.

    Science.gov (United States)

    McCully, James S., Comp.; And Others

    Designed to provide practical, up-to-date, basic information on home gardening for vocational agriculture students with only a limited knowledge of vegetable gardening, this reference unit includes step-by-step procedures for planning, planting, cultivating, harvesting, and processing vegetables in a small plot. Topics covered include plot…

  8. Natural Vegetation of the Flora area

    DEFF Research Database (Denmark)

    Sebsebe, Demissew; Friis, Ib

    2009-01-01

    A review article summarising the recent ideas about the natural vegetation in the area covered by the Flora of Ethiopia and Eritrea......A review article summarising the recent ideas about the natural vegetation in the area covered by the Flora of Ethiopia and Eritrea...

  9. Semi-arid vegetation response to antecedent climate and water balance windows

    Science.gov (United States)

    Thoma, David P.; Munson, Seth M.; Irvine, Kathryn M.; Witwicki, Dana L.; Bunting, Erin

    2016-01-01

    Questions Can we improve understanding of vegetation response to water availability on monthly time scales in semi-arid environments using remote sensing methods? What climatic or water balance variables and antecedent windows of time associated with these variables best relate to the condition of vegetation? Can we develop credible near-term forecasts from climate data that can be used to prepare for future climate change effects on vegetation? Location Semi-arid grasslands in Capitol Reef National Park, Utah, USA. Methods We built vegetation response models by relating the normalized difference vegetation index (NDVI) from MODIS imagery in Mar–Nov 2000–2013 to antecedent climate and water balance variables preceding the monthly NDVI observations. We compared how climate and water balance variables explained vegetation greenness and then used a multi-model ensemble of climate and water balance models to forecast monthly NDVI for three holdout years. Results Water balance variables explained vegetation greenness to a greater degree than climate variables for most growing season months. Seasonally important variables included measures of antecedent water input and storage in spring, switching to indicators of drought, input or use in summer, followed by antecedent moisture availability in autumn. In spite of similar climates, there was evidence the grazed grassland showed a response to drying conditions 1 mo sooner than the ungrazed grassland. Lead times were generally short early in the growing season and antecedent window durations increased from 3 mo early in the growing season to 1 yr or more as the growing season progressed. Forecast accuracy for three holdout years using a multi-model ensemble of climate and water balance variables outperformed forecasts made with a naïve NDVI climatology. Conclusions We determined the influence of climate and water balance on vegetation at a fine temporal scale, which presents an opportunity to forecast vegetation

  10. Environmental Efficiency Analysis of China's Vegetable Production

    Institute of Scientific and Technical Information of China (English)

    TAO ZHANG; BAO-DI XUE

    2005-01-01

    Objective To analyze and estimate the environmental efficiency of China's vegetable production. Methods The stochastic translog frontier model was used to estimate the technical efficiency of vegetable production. Based on the estimated frontier and technical inefficiency levels, we used the method developed by Reinhard, et al.[1] to estimate the environmental efficiency. Pesticide and chemical fertilizer inputs were treated as environmentally detrimental inputs. Results From estimated results, the mean environmental efficiency for pesticide input was 69.7%, indicating a great potential for reducing pesticide use in China's vegetable production. In addition, substitution and output elasticities for vegetable farms were estimated to provide farmers with helpful information on how to reallocate input resources and improve efficiency. Conclusion There exists a great potential for reducing pesticide use in China's vegetable production.

  11. Putrescine Plays a Positive Role in Salt-Tolerance Mechanisms by Reducing Oxidative Damage in Roots of Vegetable Soybean

    Institute of Scientific and Technical Information of China (English)

    ZHANG Gu-wen; XU Sheng-chun; HU Qi-zan; MAO Wei-hua; GONG Ya-ming

    2014-01-01

    Polyamines play important roles in plant tolerance to environmental stress. With the aim of investigating the possible involvement of putrescine (Put) in salt-tolerance mechanisms in vegetable soybean roots, exogenous Put (10 mmol L-1) and its biosynthetic inhibitor D-arginine (D-Arg) (0.5 mmol L-1) were added to nutrient solution when vegetable soybean (Glycine max L.cv. Huning 95-1) seedlings were exposed to 100 mmol L-1 sodium chloride (NaCl). The results showed that Put ameliorated but D-Arg aggravated the detrimental effects of NaCl on plant growth and biomass production. Under NaCl stress, levels of free, soluble conjugated and insoluble bound types of Put in roots of vegetable soybean were reduced, whereas those of free, soluble conjugated, and insoluble bound types of spermidine (Spd) and spermine (Spm) were increased. Exogenous Put eliminated the decrease in Put but promoted the increase of Spd and Spm. However, these changes could be reversed by D-Arg. Under NaCl stress, activities of arginine decarboxylase (ADC), S-adenosylmethionine decarboxylase (SAMDC), diamine oxidase (DAO), and polyamine oxidase (PAO) were induced, with exogenous Put promoting and D-Arg reversing these changes. Furthermore, NaCl stress decreased activities of antioxidant enzymes. Exogenous Put alleviated but D-Arg exaggerated these effects of NaCl stress, resulting in the same changes in membrane damage and reactive oxygen species (ROS) production. These results indicated that Put plays a positive role in vegetable soybean roots by activating antioxidant enzymes and thereby attenuating oxidative damage.

  12. Fruit and vegetables and cancer risk

    Science.gov (United States)

    Key, T J

    2011-01-01

    The possibility that fruit and vegetables may help to reduce the risk of cancer has been studied for over 30 years, but no protective effects have been firmly established. For cancers of the upper gastrointestinal tract, epidemiological studies have generally observed that people with a relatively high intake of fruit and vegetables have a moderately reduced risk, but these observations must be interpreted cautiously because of potential confounding by smoking and alcohol. For lung cancer, recent large prospective analyses with detailed adjustment for smoking have not shown a convincing association between fruit and vegetable intake and reduced risk. For other common cancers, including colorectal, breast and prostate cancer, epidemiological studies suggest little or no association between total fruit and vegetable consumption and risk. It is still possible that there are benefits to be identified: there could be benefits in populations with low average intakes of fruit and vegetables, such that those eating moderate amounts have a lower cancer risk than those eating very low amounts, and there could also be effects of particular nutrients in certain fruits and vegetables, as fruit and vegetables have very varied composition. Nutritional principles indicate that healthy diets should include at least moderate amounts of fruit and vegetables, but the available data suggest that general increases in fruit and vegetable intake would not have much effect on cancer rates, at least in well-nourished populations. Current advice in relation to diet and cancer should include the recommendation to consume adequate amounts of fruit and vegetables, but should put most emphasis on the well-established adverse effects of obesity and high alcohol intakes. PMID:21119663

  13. Fruit and vegetables and cancer risk.

    Science.gov (United States)

    Key, T J

    2011-01-01

    The possibility that fruit and vegetables may help to reduce the risk of cancer has been studied for over 30 years, but no protective effects have been firmly established. For cancers of the upper gastrointestinal tract, epidemiological studies have generally observed that people with a relatively high intake of fruit and vegetables have a moderately reduced risk, but these observations must be interpreted cautiously because of potential confounding by smoking and alcohol. For lung cancer, recent large prospective analyses with detailed adjustment for smoking have not shown a convincing association between fruit and vegetable intake and reduced risk. For other common cancers, including colorectal, breast and prostate cancer, epidemiological studies suggest little or no association between total fruit and vegetable consumption and risk. It is still possible that there are benefits to be identified: there could be benefits in populations with low average intakes of fruit and vegetables, such that those eating moderate amounts have a lower cancer risk than those eating very low amounts, and there could also be effects of particular nutrients in certain fruits and vegetables, as fruit and vegetables have very varied composition. Nutritional principles indicate that healthy diets should include at least moderate amounts of fruit and vegetables, but the available data suggest that general increases in fruit and vegetable intake would not have much effect on cancer rates, at least in well-nourished populations. Current advice in relation to diet and cancer should include the recommendation to consume adequate amounts of fruit and vegetables, but should put most emphasis on the well-established adverse effects of obesity and high alcohol intakes.

  14. SODOBNI PLES NA SLOVENSKEM

    OpenAIRE

    Marinko, Jožica

    2013-01-01

    Diplomsko delo predstavlja temo sodobni ples na Slovenskem. Podrobneje je predstavljena zgodovina sodobnega plesa v Sloveniji − od prvih zacetkov, pa do danes. Predstavljene so pomembne osebnosti, ki so sodobnemu plesu utrle pot in mu pomagale, da je iz zacetnega ljubiteljstva prerasel v profesionalnost. Navedene so težave, s katerimi so se spopadali sodobni plesalci, in težave, s katerimi se spopadajo še danes. Izpostavljen je problem šolanja plesalcev, predstavljena so dru...

  15. ROČNA ZASTAVNA PRAVICA NA PREMIČNINAH

    OpenAIRE

    Benko, Ana

    2013-01-01

    Ročna zastavna pravica na premičninah (pignus) je oblika zavarovanja terjatev, pri kateri je dodatno jamstvo za izpolnitev dolžnikove obveznosti vrednost zastavljene stvari. Bistvena značilnost ročne zastavne pravice na premičninah je njena posestnost. O posesti oziroma neposesti govorimo z vidika zastavnega upnika. Po vsebini je ročna zastavna pravica podobna pridržni (retencijski) pravici. Njen predmet je lahko vsaka premična stvar, ki je v pravnem prometu in ima neko prometno vrednost. Je ...

  16. Kotelny na biomasu

    OpenAIRE

    Egerle, Dušan

    2013-01-01

    Projekt řeší vytápění a přípravu teplé vody pro bytový dům v Chocni (Pardubický kraj). Bytový dům má tři nadzemní vytápěná podlaží a jedno podzemní nevytápěné podlaží. Zdrojem tepla je zplynovací kotel na dřevo, resp. kotel na pelety, který zároveň slouží pro přípravu teplé vody v zimním období, po ostatní část roku jsou na přípravu teplé vody nainstalovány solární kolektory. Zdroj tepla je umístěn v oddělené a samostatně přístupné místnosti, v kotelně....

  17. Cenzura na Internetu

    OpenAIRE

    Žila, Milan

    2011-01-01

    Tato práce se zabývá problémem cenzury na internetu v Číně. Práce popisuje formy a způsoby internetové cenzury v Číně. Zároveň uvádí i možnosti zjištění, ověření a obcházení cenzury pomocí různých nástrojů, aplikací a internetových služeb. Práce obsahuje výsledky provedených testů určených k ověření a zjištění cenzurovaných webových stránek a klíčových slov z různých lokací v Číně. Na základě těchto testů jsou vyvozeny závěry o cenzuře na internetu v Číně. This thesis deals with the p...

  18. Scaling Vegetation on Experimental Channel Patterns

    Science.gov (United States)

    van Breemen, D. M.; van de Lageweg, W. I.; van Dijk, W. M.; Kleinhans, M. G.

    2010-12-01

    There are strong feedbacks between river channels, floodplains and riparian and floodplain vegetation. We study the effect of experimental vegetation on channel pattern. Through linear bar theory it is known that channel width-depth ratio affects bar pattern and relatively narrow channels with strong banks are required for meandering. Riparian vegetation is able to alter the channel width-depth ratio and therefore the channel pattern through strengthening of the banks. Floodplain vegetation adds hydraulic resistance so the flow is more focused into the channels. However, determination of the underlying mechanisms and processes has remained scarce and qualitative and hence these effects are not yet fully understood. The objectives of this study are 1) to develop a controllable and scalable method to reproduce vegetation effect in experimental self-formed channels, and 2) to experimentally determine the effects of riparian vegetation on bank strength, channel pattern and meandering dynamics. Sprouts of three plant species were systematically subjected to different seeding densities and to various growing conditions, including light intensity, submergence and nutrient starvation. Denser seeding reduced sprout growth after about a week. Stronger light increased plant growth and plant strength. Nutrient starvation caused different branching intensity of the root system. Tens of small-scale bank erosion experiments and bank failure experiments (see Kleinhans et al., this conference) were performed to quantify the strength of banks reinforced by plant roots at the experimental scale, demonstrating that bank strength is strongly determined by seeding density, rooting density and depth relative to channel depth. To study pattern evolution and morphodynamics we used a 1.25x7.5 m flume with a constant discharge and sediment feed. The introduction of vegetation in experiments results in narrower and deeper channels. Higher vegetation density leads to static channels with

  19. A epilepsia na neurocisticercose

    Directory of Open Access Journals (Sweden)

    Luís Marques-Assis

    1972-12-01

    Full Text Available Foram estudados 131 casos de epilepsia com etiologia cisticercótica comprovada. A idade variou de 2 a 68 anos; 75 pacientes eram de sexo masculino e 56 de sexo feminino; 117 eram brancos, 10 pardos, três pretos e um amarelo. A idade de início da doença predominou na primeira década. O estudo foi feito em relação ao tipo de epilepsia, ao tempo decorrido após a primeira crise, à freqüência das crises e ao eletrencefalograma relativamente às epilepsias em geral. Investigação foi feita também em relação à cefaléia, aos achados neurológicos, liquóricos, radiológicos simples e contrastados e anátomo-patológicos. A análise dos resultados permitiu aos autores as seguintes conclusões: 1 No grupo de neurocisticercose o início da doença predominou na primeira e a partir da quarta década em relação às epilepsias em geral. 2 Dentre as manifestações clínicas predominaram as formas convulsivas da doença (61%, sendo as crises bravas-jacksonianas as menos freqüentes (4%; quando comparadas com as epilepsias em geral, verifica-se incidência menor das convulsões generalizadas na neurocisticercose. 3 Quanto ao tempo de doença, verifica-se predomínio das formas de duração mais curta (um ano ou menos na neurocisticercose. 4 A severidade da epilepsia, traduzida pela freqüência das crises, foi menor no grupo com neurocisticercose. 5 Excluídos os casos com anormalidades eletrencefalográficas contínuas, foram encontrados maiores índices percentuais de EEG normal na neurocisticercose que nas epilepsias em geral. 6 A cefaléia estava presente em 68% dos casos, assumindo caráter paroxístico na maior parte (78%; em 67% dos casos com cefaléia paroxística não havia concomitantemente sinais de hipertensão intracraniana; nos casos com cefaléia contínua, em apenas dois (13% esses sinais não estavam presentes. 7 Na maior parte dos casos (62% as manifestações epilépticas se apresentaram isoladamente, sem sinais neurol

  20. FT Duplication Coordinates Reproductive and Vegetative Growth

    Energy Technology Data Exchange (ETDEWEB)

    Hsu, Chuan-Yu [Mississippi State University (MSU); Adams, Joshua P. [Mississippi State University (MSU); Kim, Hyejin [Mississippi State University (MSU); No, Kyoungok [Mississippi State University (MSU); Ma, Caiping [Oregon State University, Corvallis; Strauss, Steven [Oregon State University, Corvallis; Drnevich, Jenny [University of Illinois, Urbana-Champaign; Wickett, Norman [Pennsylvania State University; Vandervelde, Lindsay [Mississippi State University (MSU); Ellis, Jeffrey D. [Mississippi State University (MSU); Rice, Brandon [Mississippi State University (MSU); Gunter, Lee E [ORNL; Tuskan, Gerald A [ORNL; Brunner, Amy M. [Virginia Polytechnic Institute and State University (Virginia Tech); Page, Grier P. [RTI International; Carlson, John E. [Pennsylvania State University; DePamphilis, Claude [Pennsylvania State University; Luthe, Dawn S. [Pennsylvania State University; Yuceer, Cetin [Mississippi State University (MSU)

    2011-01-01

    Annual plants grow vegetatively at early developmental stages and then transition to the reproductive stage, followed by senescence in the same year. In contrast, after successive years of vegetative growth at early ages, woody perennial shoot meristems begin repeated transitions between vegetative and reproductive growth at sexual maturity. However, it is unknown how these repeated transitions occur without a developmental conflict between vegetative and reproductive growth. We report that functionally diverged paralogs FLOWERING LOCUS T1 (FT1) and FLOWERING LOCUS T2 (FT2), products of whole-genome duplication and homologs of Arabidopsis thaliana gene FLOWERING LOCUS T (FT), coordinate the repeated cycles of vegetative and reproductive growth in woody perennial poplar (Populus spp.). Our manipulative physiological and genetic experiments coupled with field studies, expression profiling, and network analysis reveal that reproductive onset is determined by FT1 in response to winter temperatures, whereas vegetative growth and inhibition of bud set are promoted by FT2 in response to warm temperatures and long days in the growing season. The basis for functional differentiation between FT1 and FT2 appears to be expression pattern shifts, changes in proteins, and divergence in gene regulatory networks. Thus, temporal separation of reproductive onset and vegetative growth into different seasons via FT1 and FT2 provides seasonality and demonstrates the evolution of a complex perennial adaptive trait after genome duplication.

  1. Vegetation and soil carbon storage in China

    Institute of Scientific and Technical Information of China (English)

    LI; Kerang; WANG; Shaoqiang; CAO; Mingkui

    2004-01-01

    This study estimated the current vegetation and soil carbon storage in China using a biogeochemical model driven with climate, soil and vegetation data at 0.5°latitude-longitude grid spatial resolution. The results indicate that the total carbon storage in China's vegetation and soils was 13.33 Gt C and 82.65 Gt C respectively, about 3% and 4% of the global total. The nationally mean vegetation and soil carbon densities were 1.47 kg C/m2 and 9.17 kg C/m2, respectively, differing greatly in various regions affected by climate, vegetation, and soil types. They were generally higher in the warm and wet Southeast China and Southwest China than in the arid Northwest China; whereas vegetation carbon density was the highest in the warm Southeast China and Southwest China, soil carbon density was the highest in the cold Northeast China and southeastern fringe of the Qinghai-Tibetan Plateau. These spatial patterns are clearly correlated with variations in the climate that regulates plant growth and soil organic matter decomposition, and show that vegetation and soil carbon densities are controlled by different climatic factors.

  2. Microbiota on spoiled vegetables and their characterization.

    Science.gov (United States)

    Lee, Dong Hwan; Kim, Jin-Beom; Kim, Mihyun; Roh, Eunjung; Jung, Kyusuk; Choi, Minseon; Oh, Changsik; Choi, Jaehyuk; Yun, Jongchul; Heu, Sunggi

    2013-08-01

    Spoilage causes vegetables to deteriorate and develop unpleasant characteristics. Approximately 30 % of fresh vegetables are lost to spoilage, mainly due to colonization by bacteria. In the present study, a total of 44 bacterial isolates were obtained from a number of spoiled vegetables. The isolates were identified and classified into 20 different species of 14 genera based on fatty acid composition, biochemical tests, and 16S rDNA sequence analyses. Pseudomonas spp. were the species most frequently isolated from the spoiled vegetables. To evaluate the spoilage ability of each species, a variety of fresh vegetables were treated with each isolate and their degree of maceration was observed. In addition, the production of plant cell wall-degrading enzymes (PCWDEs), such as cellulase, xylanase, pectate lyase, and polygalacturonase, was compared among isolates to investigate their potential associations with spoilage. Strains that produce more PCWDEs cause spoilage on more diverse plants, and pectinase may be the most important enzyme among PCWDEs for vegetable spoilage. Most gram-negative spoilage bacteria produced acylated homoserine lactone, a quorum-sensing signal molecule, suggesting that it may be possible to use this compound effectively to prevent or slow down the spoilage of vegetables contaminated with diverse bacteria.

  3. A new world natural vegetation map for global change studies

    Directory of Open Access Journals (Sweden)

    David M. Lapola

    2008-06-01

    Full Text Available We developed a new world natural vegetation map at 1 degree horizontal resolution for use in global climate models. We used the Dorman and Sellers vegetation classification with inclusion of a new biome: tropical seasonal forest, which refers to both deciduous and semi-deciduous tropical forests. SSiB biogeophysical parameters values for this new biome type are presented. Under this new vegetation classification we obtained a consensus map between two global natural vegetation maps widely used in climate studies. We found that these two maps assign different biomes in ca. 1/3 of the continental grid points. To obtain a new global natural vegetation map, non-consensus areas were filled according to regional consensus based on more than 100 regional maps available on the internet. To minimize the risk of using poor quality information, the regional maps were obtained from reliable internet sources, and the filling procedure was based on the consensus among several regional maps obtained from independent sources. The new map was designed to reproduce accurately both the large-scale distribution of the main vegetation types (as it builds on two reliable global natural vegetation maps and the regional details (as it is based on the consensus of regional maps.Elaborou-se um novo mapa global de vegetação natural naresolução horizontal de 1 grau para uso em modelos climáticos de circulação geral. Utilizou-se a classificação de vegetação de Dorman e Sellers com a inclusão de um novo bioma: floresta tropical estacional, que compreende as florestas tropicais decíduas e semidecíduas. Para este novo tipo de bioma, apresentaram-se os valores de parâmetros biogeofísicos domodelo de processos à superfície SSiB. Sob essa nova classificação de vegetação, obteve-se um mapa de consenso entre dois mapas globais de vegetação natural amplamente utilizados em estudos climáticos. Mostrou-se que esses dois mapas alocam biomas diferentes em cerca

  4. 76 FR 37312 - Fruit and Vegetable Industry Advisory Committee

    Science.gov (United States)

    2011-06-27

    ...; ] DEPARTMENT OF AGRICULTURE Agricultural Marketing Service Fruit and Vegetable Industry Advisory Committee... Agriculture (USDA) Fruit and Vegetable Industry Advisory Committee and a Request for Nominations. SUMMARY: The USDA intends to reestablish the Fruit and Vegetable Industry Advisory Committee (Committee)....

  5. Salt reduction in vegetable fermentation: reality or desire?

    Science.gov (United States)

    Bautista-Gallego, J; Rantsiou, K; Garrido-Fernández, A; Cocolin, L; Arroyo-López, F N

    2013-08-01

    NaCl is a widely used chemical in food processing which affects sensory characteristics and safety; in fact, its presence is frequently essential for the proper preservation of the products. Because the intake of high contents of sodium is linked to adverse effects on human health, consumers demand foods with low-sodium content. A 1st step to reduce the use of salt would imply the proper application of this compound, reducing its levels to those technologically necessary. In addition, different chloride salts have been evaluated as replacers for NaCl, but KCl, CaCl2 , and ZnCl2 show the most promising perspectives of use. However, prior to any food reformulation, there is a need for exhaustive research before its application at industrial level. Salt reduction may lead to an increased risk in the survival/ growth of pathogens and may also alter food flavor and cause economic losses. This review deals with the technological, microbiological, sensorial, and health aspects of the potential low-salt and salt-substituted vegetable products and how this important segment of the food industry is responding to consumer demand.

  6. Dyes adsorption blue vegetable and blue watercolor by natural zeolites modified with surfactants;Adsorcion de colorantes azul vegetal y azul acuarela por zeolitas naturales modificadas con surfactantes

    Energy Technology Data Exchange (ETDEWEB)

    Jardon S, C. C.; Olguin G, M. T. [ININ, Departamento de Quimica, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico); Diaz N, M. C., E-mail: teresa.olguin@inin.gob.m [Instituto Tecnologico de Toluca, Av. Instituto Tecnologico s/n, Ex-Rancho la Virgen, 52140 Metepec, Estado de Mexico (Mexico)

    2009-07-01

    In this work was carried out the dyes removal blue vegetable and blue watercolor of aqueous solutions, to 20 C, at different times and using a zeolite mineral of Parral (Chihuahua, Mexico) modified with hexadecyl trimethyl ammonium bromide or dodecyl trimethyl ammonium bromide. The zeolite was characterized before and after of its adaptation with NaCl and later with HDTMABr and DTMABr. For the materials characterization were used the scanning electron microscopy of high vacuum; elementary microanalysis by X-ray spectroscopy of dispersed energy and X-ray diffraction techniques. It was found that the surfactant type absorbed in the zeolite material influences on the adsorption process of the blue dye. Likewise, the chemical structure between the vegetable blue dye and the blue watercolor, determines the efficiency of the color removal of the water, by the zeolites modified with the surfactants. (Author)

  7. Determination of zinc contents in vegetables

    International Nuclear Information System (INIS)

    Zinc content of three groups of vegetables (roots and tuber, leaves and fruits) collected from local markets was determined and are reported here. The determination was made by Atomic Absorption Spectrophotometer. The results obtained show that the zinc content of different vegetables ranged from 6.26-36.80 ppm, 8.80-70-70 ppm and 7.20-35.10 ppm for roots and tubers, fruits of vegetables respectively on dry weight basis. Generally, the values obtained in majority are not above, the maximum permissible limits. (author)

  8. Influence of vegetation on SMOS mission retrievals

    Directory of Open Access Journals (Sweden)

    K. Lee

    2002-01-01

    Full Text Available Using the proposed Soil Moisture and Ocean Salinity (SMOS mission as a case study, this paper investigates how the presence and nature of vegetation influence the values of geophysical variables retrieved from multi-angle microwave radiometer observations. Synthetic microwave brightness temperatures were generated using a model for the coherent propagation of electromagnetic radiation through a stratified medium applied to account simultaneously for the emission from both the soil and any vegetation canopy present. The synthetic data were calculated at the look-angles proposed for the SMOS mission for three different soil-moisture states (wet, medium wet and dry and four different vegetation covers (nominally grass, crop, shrub and forest. A retrieval mimicking that proposed for SMOS was then used to retrieve soil moisture, vegetation water content and effective temperature for each set of synthetic observations. For the case of a bare soil with a uniform profile, the simpler Fresnel model proposed for use with SMOS gave identical estimates of brightness temperatures to the coherent model. However, to retrieve accurate geophysical parameters in the presence of vegetation, the opacity coefficient (one of two parameters used to describe the effect of vegetation on emission from the soil surface used within the SMOS retrieval algorithm needed to be a function of look-angle, soil-moisture status, and vegetation cover. The effect of errors in the initial specification of the vegetation parameters within the coherent model was explored by imposing random errors in the values of these parameters before generating synthetic data and evaluating the errors in the geophysical parameters retrieved. Random errors of 10% result in systematic errors (up to 0.5°K, 3%, and ~0.2 kg m-2 for temperature, soil moisture, and vegetation content, respectively and random errors (up to ~2°K, ~8%, and ~2 kg m-2 for temperature, soil moisture and vegetation content

  9. Genotoxicity of vegetables irrigated by industrial wastewater

    Institute of Scientific and Technical Information of China (English)

    Nupur Mathur; Pradeep Bhatnagar; Hemraj Verma

    2006-01-01

    Wastewater effluents from textile dyeing and printing industries of Sanganer are discharged directly, without any treatment,into Amani Shah Nallah drainage. The drainage water takes the dissolved toxicants to flora and fauna, including crops and seasonal vegetables, being grown in the land adjoining the Nallah drainage. Thus mutagenic potential of vegetables irrigated by the water of Amani Shah Nallah drainage was investigated in the present study. The vegetables irrigated by ground water from Sanganer have also been analyzed to determine possible adverse effects of these wastewater effluents on aqua duct.

  10. Integration of vegetation inventory data and ALOS image for vegetation classification in Yancheng coastal wetlands

    Science.gov (United States)

    Li, Yunmei; Wu, Lan; Yang, Yu; Xia, Rui; Wang, Yanfei; Jin, Xing

    2009-10-01

    Systematic mapping and monitoring of wetland landscape are of fundamental importance for wetland development and management. To accurately classify wetland in Yancheng coastal wetland, ground investigation was conducted in 2006. Integrated with ground investigation, the wetland was classified into 8 categories such as Spartina alterniflora Loisel, Farm land, Phragmites Australis, Artemisia halodendron Turcz, Bare beach, Salt field, Fish & shrimp pond, and Sea water. A total of three decision trees were successfully produced. The first represented broad divisions of vegetation (in fact, at this stage, it just can be called vegetated cover like) and non-vegetation, and the second two represented more detailed vegetation classes and non-vegetation classes. To construct the decision trees, NDVI and principal component analysis were used as the evaluation factors. The thresholds were built combining with ground investigation and spectral property. Firstly, almost all kinds of vegetable were divided out of non-vegetation by NDVI. Secondly, the different species of vegetation were distinguished and some vegetated cover like was eliminated out of vegetation. Phragmites Australis belt, Artemisia halodendron Turcz belt, Spartina alterniflora Loisel belt and bare beach belt were distributed regularly from land to sea.

  11. Determination of macro and micronutrients and nutritional prospects of six vegetable species of Mardan, Pakistan

    International Nuclear Information System (INIS)

    This study was carried out to assess the nutritional an d mineral composition of selected vegetables, which are commonly used as food in Pakistan. Abel moschus esculentus, Solanum melongena , Cucurbita moschata, Allium sativum, Momordica charantia and Portulaca oleracea were collected form Mardan (Pakistan) and subjected to nutrient analysis. Nutrient analysis (total proteins, fats, carbohydrates, ash, energy value and moisture contents) of vegetable species were determined according to AOAC methods. Macro viz. calcium (Ca), magnesium (Mg), potassium (K), sodium (Na), and phosphorus (P) and micro viz. iron (Fe), zinc (Zn), manganese (Mn), copper (Cu), nickel (Ni) and selenium (Se) elements were analyzed using Atomic Absorption Spectrometric method. The moisture (wet and dry basis), ash, fats, fibers, proteins, energy value (305.9 - 382.6 Kcal/100 g) and carbohydrates of these vegetable species were found in the range of 62.9 - 92.7, 5.4-7.7, 3.1 - 23.1, 0.3-8.3, 10.2-22.5, 7.7 - 16.9, and 51.3 - 80.2% respectively. The micronutrients including Fe, Zn, Mn, and Cu were found to be in the range, 6.2-24.1, 0.2-11.7, 0.6-16.7, and 0.1-70 ppm respectively. The results of macronutrients obtained having values of Ca (90-1850 ppm), Mg (94-571 ppm), K (2078-4010 ppm), Na (2-170 ppm), and P (250-1532 ppm) respectively. The quantity of Ni and Se were found negligible in these vegetables. The results indicate that all these vegetables have the potential to provide essential nutrients to the human beings. Momordica charantia and Allium sativum were found to be a good source of proteins, fats, carbohydrates, hence capable of providing energy to the consumer. Both these species were found significantly useful in terms of minerals sources, particularly Ni, K, P, Zn, Cu, and Mn. (author)

  12. Vegetation - Napa County and Blue Ridge Berryessa [ds201

    Data.gov (United States)

    California Department of Resources — In 1995, the Manual of California Vegetation (MCV) introduced a quantitatively based method for classifying and mapping vegetation in California. In 2002 Department...

  13. Golden Gate National Recreation Area Vegetation Inventory Project

    Data.gov (United States)

    California Department of Resources — High resolution vegetation polygons mapped by the National Park Service. The vegetation units of this map were determined through stereoscopic interpretation of...

  14. Miocardiopatia dilatada na infancia

    OpenAIRE

    Madureira, José Rubens Alcantara

    2013-01-01

    Resumo: Com objetivo de estudar a evolução e obter informações prognosticas da Miocardiopatia Dilatada na infância. Foram Estudados 70 pacientes internados no Centro de Cardiologia Infantil do Paraná, do Hospital infantil Pequeno Príncipe, em Curitiba, no período de Janeiro de 1985 a janeiro de 1995. Todos os pacientes foram internados por ocasião da primeira consulta hospitalar, tendo sido realizados exame clínico, radiografia de tórax, eletrocardiograma e ecocardiograma regularmente, no int...

  15. Rawls na planini?

    OpenAIRE

    Kurelić, Zoran

    1994-01-01

    Autor prikazuje komunitarističku kritiku Rawlsa, prije svega u obliku koji je izložio Michael Walzer u knjizi "Spheres of Justice". Glavni prigovor Walzera i drugih komunitaraca Rawlsovoj teoriji pravednosti da je ona objektivistička i da stoga predstavlja modernu varijantu platoizma. Nasuprot takvoj poziciji, Walzer inzistira na teoriji pravednosti koja polazi od partikularnih vrijednosti pojedinačnog društva i kulture, te sam nastoji formulirati kritiku američkog društva kao zajednice podvr...

  16. na Perua

    Directory of Open Access Journals (Sweden)

    Jorge Carvalho

    1989-01-01

    Full Text Available Antes de se caracterizar como tentativa de ensaio ou de análise a qualquer coisa, o presente artigo tem, antes de mais nada, a pretensão de se constituir uma provocação ao debate acerca da questão do esporte na escola. A provocação parte basicamente do relato da minha experiência pessoal como Secretário da Educação do Município de Aracaju, cargo que exerci no período de 1º de janeiro de 1986 a 27 de janeiro de 1987.

  17. Stress laboral na PSP

    OpenAIRE

    Passeira, Andrea Verónica Vaz

    2011-01-01

    Dissertação de Mestrado em Segurança e Higiene no Trabalho O presente Estudo foi aplicado a profissionais da polícia do Comando Metropolitano de Lisboa da PSP. O objectivo principal subjacente a este trabalho foi proceder à análise da problemática do stress, nos profissionais da PSP que constituem a nossa amostra. Para tal, a metodologia utilizada consistiu na aplicação de um conjunto de Questionários, designadamente, “Fontes de Stress”, “Sintomas de Stress”, “Estratégias de C...

  18. Average Vegetation Growth 1992 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1992 average vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the...

  19. Peak Vegetation Growth 2004 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 2004 peak vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the map...

  20. Average Vegetation Growth 1994 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1994 average vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the...

  1. Average Vegetation Growth 1991 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1991 average vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the...

  2. Average Vegetation Growth 1993 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1993 average vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the...

  3. Peak Vegetation Growth 1994 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1994 peak vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the map...

  4. Average Vegetation Growth 1998 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1998 average vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the...

  5. Average Vegetation Growth 1999 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1999 average vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the...

  6. Peak Vegetation Growth 1995 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1995 peak vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the map...

  7. Average Vegetation Growth 1990 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1990 average vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the...

  8. Peak Vegetation Growth 1990 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1990 peak vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the map...

  9. Peak Vegetation Growth 1993 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1993 peak vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the map...

  10. Peak Vegetation Growth 2002 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 2002 peak vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the map...

  11. Peak Vegetation Growth 1997 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1997 peak vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the map...

  12. Average Vegetation Growth 2003 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 2003 average vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the...

  13. House soap made with used vegetable oil

    Directory of Open Access Journals (Sweden)

    Rosana Maria Alberici

    2004-06-01

    Full Text Available In this work, an alternative method to recycle used vegetable oil was developed. Because it disposal in the environment has caused serious pollution problems, it was used to make house soap.

  14. Submerged Aquatic Vegetation (SAV) - Volusia County Seagrass

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Aquatic vegetation in Volusia County. DEP SEA_GRASSES This polygon GIS data set represents a compilation of statewide seagrass data from various source agencies and...

  15. Peak Vegetation Growth 1999 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1999 peak vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the map...

  16. Vegetation Drought Response Index: 2010-Present

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — VegDRI, short for Vegetation Drought Response Index, is a drought-monitoring tool developed by scientists at EROS in collaboration with the National Drought...

  17. Fractals in Spatial Patterns of Vegetation Formations

    Institute of Scientific and Technical Information of China (English)

    SONG Zhiyuan; HUANG Daming; Masae Shiyomi; WANG Yusheng; Shigeo Takahashi; Hori Yoshimichi; Yasuo Yamamuru; CHEN Jun

    2006-01-01

    The spatial distribution patterns of species are always scale-dependent and spatially self-similar in ecological systems. In this work, vegetation distribution data collected from the vegetation map of the Xigazê region was analyzed using a box-counting method. The power law of the box-counting dimension (DB) across a range of scales (5-160 km) confirms the fractal patterns for most vegetation formations, while the fluctuations of the scale-specific DB among the different abundance groups indicate limitations of fractal coherence. The fractal method is shown to be a useful tool for measuring the distribution patterns of vegetation formations across scales, which provides important information for both species and habitat conservation, especially in landscape management.

  18. Vegetation Mapping Project: Massasoit National Wildlife Refuge

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report details the Vegetation Mapping Project at the Massasoit National Wildlife Refuge (NWR) inPlymouth, Massachusetts (Figure 1) which is part of the Eastern...

  19. US Forest Service LANDFIRE Existing Vegetation

    Data.gov (United States)

    US Forest Service, Department of Agriculture — LANDFIRE Existing Vegetation is mapped using predictive landscape models based on extensive field-referenced data, satellite imagery and biophysical gradient layers...

  20. Cellular antioxidant activity of common vegetables.

    Science.gov (United States)

    Song, Wei; Derito, Christopher M; Liu, M Keshu; He, Xiangjiu; Dong, Mei; Liu, Rui Hai

    2010-06-01

    The measurement of antioxidant activity using biologically relevant assays is important to screen fruits, vegetables, natural products, and dietary supplements for potential health benefits. The cellular antioxidant activity (CAA) assay quantifies antioxidant activity using a cell culture model and was developed to meet the need for a more biologically representative method than the popular chemistry antioxidant capacity measures. The objective of the study was to determine the CAA, total phenolic contents, and oxygen radical absorbance capacity (ORAC) values of 27 vegetables commonly consumed in the United States. Beets, broccoli, and red pepper had the highest CAA values, whereas cucumber had the lowest. CAA values were significantly correlated to total phenolic content. Potatoes were found to be the largest contributors of vegetable phenolics and CAA to the American diet. Increased fruit and vegetable consumption is an effective strategy to increase antioxidant intake and decrease oxidative stress and may lead to reduced risk of developing chronic diseases, such as cancer and cardiovascular disease.

  1. Peak Vegetation Growth 1991 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1991 peak vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the map...

  2. Average Vegetation Growth 2002 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 2002 average vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the...

  3. Peak Vegetation Growth 1996 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1996 peak vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the map...

  4. Average Vegetation Growth 1997 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 1997 average vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the...

  5. Delta Vegetation and Land Use [ds292

    Data.gov (United States)

    California Department of Resources — Vegetation and land use are mapped for the approximately 725,000 acres constituting the Legal Delta portion of the Sacramento and San Joaquin River Delta area....

  6. Soil-vegetation-atmosphere transfer modeling

    Energy Technology Data Exchange (ETDEWEB)

    Ikonen, J.P.; Sucksdorff, Y. [Finnish Environment Agency, Helsinki (Finland)

    1996-12-31

    In this study the soil/vegetation/atmosphere-model based on the formulation of Deardorff was refined to hour basis and applied to a field in Vihti. The effect of model parameters on model results (energy fluxes, temperatures) was also studied as well as the effect of atmospheric conditions. The estimation of atmospheric conditions on the soil-vegetation system as well as an estimation of the effect of vegetation parameters on the atmospheric climate was estimated. Areal surface fluxes, temperatures and moistures were also modelled for some river basins in southern Finland. Land-use and soil parameterisation was developed to include properties and yearly variation of all vegetation and soil types. One classification was selected to describe the hydrothermal properties of the soils. Evapotranspiration was verified against the water balance method

  7. Hydrolyzed Vegetable Protein Containing Products Recalls

    Data.gov (United States)

    U.S. Department of Health & Human Services — This list includes products subject to recall in the United States since February 2010 related to hydrolyzed vegetable protein (HVP) paste and powder distributed by...

  8. Fruit and vegetable consumption and mortality

    DEFF Research Database (Denmark)

    Leenders, Max; Sluijs, Ivonne; Ros, Martine M;

    2013-01-01

    In this study, the relation between fruit and vegetable consumption and mortality was investigated within the European Prospective Investigation Into Cancer and Nutrition. Survival analyses were performed, including 451,151 participants from 10 European countries, recruited between 1992 and 2000...... body mass index and suggested in smokers. Inverse associations were stronger for raw than for cooked vegetable consumption. These results support the evidence that fruit and vegetable consumption is associated with a lower risk of death....... be prevented if all participants would shift their consumption 1 quartile upward. Consumption of fruits and vegetables was inversely associated with all-cause mortality (for the highest quartile, hazard ratio = 0.90, 95% confidence interval (CI): 0.86, 0.94), with a rate advancement period of 1.12 years (95...

  9. VEGETATIVE RESCUE OF Anadenanthera macrocarpa TREES

    Directory of Open Access Journals (Sweden)

    Poliana Coqueiro Dias

    2015-03-01

    Full Text Available The objective of this work was to evaluate the vegetative rescue of adult Anadenanthera macrocarpa trees through the induction of epicormic shoots from tree severance and stem ringing, as well as the efficiency of cutting technique on the propagation of the species. The experimental design used was random plots, in a 2 X 2 factorial arrangement, constituted by two techniques for the induction of basal shoots (tree severance and stem ringing and cuttings types (herbaceous cuttings and semihardwoods cuttings, in four replicates and plots of 12 cuttings per repetition. The tree severance and stem ringing were efficient in the induction of basal shoots in adult A. macrocarpa trees. However, the tree severance provided higher emission of basal shoots. The herbaceous cuttings presented higher rooting percentages, independent of vegetative rescue technique. In general, we conclude that the vegetative rescue and the vegetative propagation of A. macrocarpa adult trees are technically efficient.

  10. Vegetation patterns and environmental gradients in Benin

    NARCIS (Netherlands)

    Adomou, A.

    2005-01-01

    Key words: West Africa, Benin, vegetation patterns, floristic areas, phytogeography, chorology, floristic gradients, climatic factors, water availability, Dahomey Gap, threatened plants, biodiversity, conservation.Understanding plant species distribution patterns and the underlying factors is a cruc

  11. FUNCTIONAL BEVERAGES BASED ON VEGETABLE JUICES

    Directory of Open Access Journals (Sweden)

    Limareva N. S.

    2014-01-01

    Full Text Available This article covers development of functional beverages technology based on using vegetable juice with apple and beetroot pectin concentrates, content of vitamins, minerals and functional properties

  12. Vegetation - Suisun Marsh 1999 [ds160

    Data.gov (United States)

    California Department of Resources — This vegetation mapping project of Suisun Marsh blends ground-based classification, aerial photo interpretation, and GIS editing and processing. The method is based...

  13. Selected Vegetables/Sun's Soup (PDQ)

    Science.gov (United States)

    ... Alternative Medicine (CAM) CAM for Patients CAM for Health Professionals Questions to Ask about Your Treatment Research Selected Vegetables/Sun's Soup (PDQ®)–Patient Version Overview NOTE: The ...

  14. Bonneville - Hood River Vegetation Management Environmental Assessment

    Energy Technology Data Exchange (ETDEWEB)

    N/A

    1998-08-01

    To maintain the reliability of its electrical system, BPA, in cooperation with the U.S. Forest Service, needs to expand the range of vegetation management options used to clear unwanted vegetation on about 20 miles of BPA transmission line right-of-way between Bonneville Dam and Hood River; Oregon, within the Columbia Gorge National Scenic Area (NSA). We propose to continue controlling undesirable vegetation using a program of Integrated Vegetation Management (IVM) which includes manual, biological and chemical treatment methods. BPA has prepared an Environmental Assessment (EA) (DOE/EA-1257) evaluating the proposed project. Based on the analysis in the EA, BPA has determined that the proposed action is not a major Federal action significantly affecting the quality of the human environment, within the meaning of the National Environmental Policy Act (NEPA) of 1969. Therefore, the preparation of an Environmental Impact Statement (EIS) is not required and BPA is issuing this FONSI.

  15. Average Vegetation Growth 2001 - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer is a grid map of 2001 average vegetation growth for Alaska and the conterminous United States. The nominal spatial resolution is 1 kilometer and the...

  16. Simulated changes in vegetation distribution, land carbon storage, and atmospheric CO2 in response to a collapse of the North Atlantic thermohaline circulation

    OpenAIRE

    Köhler, Peter; Joos, F.; Gerber, S; Knutti, R.

    2005-01-01

    It is investigated how abrupt changes in the North Atlantic (NA) thermohaline circulation (THC) affect the terrestrial carbon cycle. The Lund-Potsdam-Jena Dynamic Global Vegetation Model is forced with climate perturbations from freshwater experiments with the ECBILT-CLIO ocean-atmosphere model. A reorganization of the marine carbon cycle is not addressed. Modelled NA THC collapsed and recovered after about a millennium in response to prescribed freshwater forcing. The initial cooling of seve...

  17. Sensory determinants of stated liking for vegetable names and actual liking for canned vegetables

    DEFF Research Database (Denmark)

    Dinnella, Caterina; Morizet, David; Masi, Camilla;

    2016-01-01

    Sensory properties are reported as one of the main factors hindering an appropriate vegetable intake by the young. In the present work the sensory determinants of likings for vegetables were explored in adolescents of four European countries (Denmark, n = 88; France, n = 206; Italy, n = 110...... and United Kingdom, n = 93). A questionnaire was designed to study cross country differences in stated liking for and familiarity with a list of vegetables popular among European markets (between-vegetable approach). A within-vegetable comparison approach with actual tasting was used to analyze differences...... indicate that flavour and appearance descriptors of the distinct sensory properties of each type of vegetable positively affect liking, while the intensity of unusual flavours is related to sample disliking....

  18. New vegetable and fruit-vegetable juices treated by high pressure

    Science.gov (United States)

    Gabrovská, Dana; Ouhrabková, Jarmila; Rysová, Jana; Laknerová, Ivana; Fiedlerová, Vlasta; Holasová, Marie; Winterová, Renata; Průchová, Jiřina; Strohalm, Jan; Houška, Milan; Landfeld, Aleš; Erban, Vladimír; Eichlerová, Eva; Němečková, Irena; Kejmarová, Marie; Bočková, Pavlína

    2012-03-01

    The aim of this work was to find sensory suitable combinations of not commonly used vegetables, that is, cabbage, celeriac and parsnip, into mixed fruit-vegetable juices, two-species vegetable juices and vegetable juices with whey. These juices might have the potential to offer consumers new, interesting, tasty and nutritional products. Another interesting variation could be preparation of vegetable juices in combination with sweet whey. Nutritional and sensory evaluations were carried out using juices prepared in the laboratory. The total phenolic content, in addition to ascorbic acid and antioxidant activity, was determined. The developed juices with high nutritional value should increase very low fruit and vegetable consumption in the Czech population. The prepared juices were high pressure pasteurized (410 MPa). This technique retains the desired levels of important nutritional substances, while being destructive to live microbial cell structure. The germination of spores is suppressed by low pH value.

  19. Determination of macro, micro nutrient and trace element concentrations in Indian medicinal and vegetable leaves using instrumental neutron activation analysis

    Energy Technology Data Exchange (ETDEWEB)

    Naidu, G.R.K.; Balaji, T. [Department of Chemistry, S.V. University, Tirupati (India); Denschlag, H.O.; Mauerhofer, E.; Porte, N. [Institut fuer Kernchemie, Johannes Gutenberg Universitaet, Mainz (Germany)

    1999-05-01

    Leafy samples often used as medicine in the Indian Ayurvedic system and vegetables were analyzed for 20 elements (As, Ba, Br, Ca, Ce, Cr, Cs, Co, Eu, Fe, K, La, Na, Rb, Sb, Sc, Sm, Sr, Th, Zn) by employing Instrumental Neutron Activation Analysis (INAA). The samples were irradiated at the 100 kW TRIGA-MAINZ nuclear reactor and the induced activities were counted by gamma ray spectrometry using an efficiency calibrated high resolution High Purity Germanium (HPGe) detector. The concentration of the elements in the medicinal and vegetable leaves and their biological effects on human beings are discussed.

  20. Determination of macro, micro nutrient and trace element concentrations in Indian medicinal and vegetable leaves using instrumental neutron activation analysis

    International Nuclear Information System (INIS)

    Leafy samples often used as medicine in the Indian Ayurvedic system and vegetables were analyzed for 20 elements (As, Ba, Br, Ca, Ce, Cr, Cs, Co, Eu, Fe, K, La, Na, Rb, Sb, Sc, Sm, Sr, Th, Zn) by employing Instrumental Neutron Activation Analysis (INAA). The samples were irradiated at the 100 kW TRIGA-MAINZ nuclear reactor and the induced activities were counted by gamma ray spectrometry using an efficiency calibrated high resolution High Purity Germanium (HPGe) detector. The concentration of the elements in the medicinal and vegetable leaves and their biological effects on human beings are discussed

  1. Anaerobic digestion of food and vegetable waste

    OpenAIRE

    Jiang, Ying

    2012-01-01

    Food and vegetable wastes contribute a large percentage of the organic fraction of municipal solid waste (OFMSW), and anaerobic digestion potentially offers an ideal method for their management. Their chemical composition can, however, lead to unstable operation and in extreme cases complete process failure has been reported with this type of substrate. Semi-continuous trials on vegetable waste were carried out in laboratory-scale digesters with daily feed additions at different organic loadi...

  2. Determination of fat in vegetable foods.

    Science.gov (United States)

    Rosenthal, I; Merin, U; Popel, G; Bernstein, S

    1985-01-01

    The fat in vegetable foods--tree nuts, peanuts, sunflower seeds, avocado, and olives--can be determined volumetrically by acid digestion of the material and separation of the fat. The assay can be performed conveniently by using the equipment developed for fat determination of milk (Gerber method). The results agree well with those obtained by Soxhlet extraction. The advantages of using the Gerber method for vegetable foods are simplicity, speed, low operation cost, and elimination of the use of inflammable solvents.

  3. CONSIDERATIONS ON ROMANIA’S VEGETABLE MARKET

    Directory of Open Access Journals (Sweden)

    Agatha POPESCU

    2013-12-01

    Full Text Available The paper aimed to present the situation of Romania’s vegetable market in the period 2007-2011 based on the statistical data regarding the main vegetables: tomatoes, onion, garlic, cabbage, green peppers and melons. The vegetable production increased by 33.99 from 3,166.8 tons in 2007 to 4,176.3 tons in 2011.This was due to the yield gain as follows: 58.55 % for melons, 27.62 % for green peppers, 27.05 % for tomatoes, 25.99 % for dry garlic, 24.96 % for dry onion, 12.61 % for white cabbage. In 2011, the contribution of various categories of vegetables to production was: 24.55 % white cabbage, 21.81 % tomatoes, 15.45 % melons, 9.44 % onion, 6.06 % green pepper, 1.59 % garlic and 21.1 % other vegetables. The contribution of the micro regions to vegetable production in 2011 was: 19.46 % South Muntenia, 18.95 % South East Romania, 17.30 % South West Oltenia, 15.92 % North East Romania, 10.43 % West Romania, 8.47 % North West Romania, 6.54 % Central Romania, 2.93 % Bucharest Ilfov. Vegetable production per inhabitant is higher in Romania compared to the average production per capita in the EU. The average consumption increased as a postive aspect reflecting the obtained production and import. Vegetable production should increase in order to cover much better the doestic market needs and support export to the EU market.

  4. Value perception and consumption of indigenous vegetables

    OpenAIRE

    Chanita Panmanee; Aree Cheamuangphan; Kasem Kunasri

    2013-01-01

    Awareness of safety and healthy food is continuously increasing nowadays. Indigenous vegetables are the one of many choices influencing on consumption decision making of local people because they are readily available food source in rural areas. Moreover, they are nutritious and have medicinal properties being beneficial in the treatment of various diseases. In fact, the more understanding of indigenous vegetables value of the consumers, the more utilizing them for their health. Thus, the pur...

  5. Some aspects of vegetable pickling processes

    OpenAIRE

    Nabais, R.M.; Malcata, F. X.

    1997-01-01

    A topical review of pickled vegetables is presented that encompasses scientific considerations rele vant to processing with the ultimate goal of generating interest for this ancient preservation tech nique. The emphasis is placed on the potential application of pickling to a group of high quality vegetables, and directing research and development pertaining to pickling in a more educated way. A critical literature survey is presented on issues such as transport of solutes, in situ fermen tati...

  6. Avaliação da comunidade de macroinvertebrados aquáticos como ferramenta para o monitoramento de um reservatório na bacia do rio Pitangui, Paraná, Brasil

    Directory of Open Access Journals (Sweden)

    Ivana F Barbola

    2011-06-01

    Full Text Available Os macroinvertebrados bentônicos e nectônicos representam elementos importantes na estrutura e funcionamento dos ecossistemas aquáticos e sua distribuição é influenciada pela natureza química do substrato, composição da vegetação e profundidade da lâmina d'água. O conhecimento desta fauna contribui para a avaliação da qualidade da água e a elaboração de ações visando à conservação da biodiversidade. No presente estudo foram avaliadas diferentes medidas bióticas da comunidade de invertebrados da represa de Alagados, importante manancial da cidade de Ponta Grossa, no Paraná. Em cinco diferentes pontos de amostragem, foram coletados 18.473 exemplares de macroinvertebrados aquáticos ou semi-aquáticos, pertencentes a 46 táxons dos filos Annelida (Hirudinea e Oligochaeta, Mollusca (Gastropoda, Platyhelminthes (Turbellaria, Nematoda e Arthropoda (Arachnida, Crustacea e Insecta. Esta comunidade foi constituída predominantemente por organismos predadores (45,7% dos táxons amostrados, seguidos de coletores e/ou filtradores (23,9%; raspadores (15,2%, fragmentadores (13% e detritívoros (2,2%. De modo geral, os índices de diversidade (H' e equitabilidade (J foram significativamente baixos para os cinco locais investigados, com H' variando de 0,3301 a 1,0396. Quanto à tolerância dos organismos à poluição orgânica, alguns táxons mais sensíveis foram muito raros (Plecoptera ou em baixa frequência (Trichoptera e Ephemeroptera. Entre os grupos mais resistentes a ambientes poluídos estão os Chironomidae e os Hirudinea, ambos bastante comuns nas amostras de Alagados. Este estudo reforça a importância da análise de bioindicadores na avaliação da qualidade de água para consumo humano e também para a conservação de ecossistemas, considerando que um programa de monitoramento ambiental deve integrar medidas físicas, químicas e biológicas.

  7. Estimation of vegetative mercury emissions in China

    Institute of Scientific and Technical Information of China (English)

    QUAN Jiannong; ZHANG Xiaoshan; Shang Gyoo SHIM

    2008-01-01

    Vegetative mercury emissions were estimated within the framework of Biogenic Emission Inventory System (BEIS3 V3.11). In this estimation, the 19 categories of U.S. Geological Survey landcover data were incorporated to generate the vegetation-specific mercury emissions in a 81-km Lambert Conformal model grid coveting the total Chinese continent. The surface temperature and cloud-corrected solar radiation from a Mesoscale Meteorological model (MMS) were retrieved and used for calculating the diurnal variation. The implemented emission factors were either evaluated from the measured mercury flux data for forest, agriculture and water, or assumed for other land fields without available flux data. Annual simulations using the MM5 data were performed to investigate the seasonal emission variation. From the sensitivity analysis using two sets of emission factors, the vegetative mercury emissions in China domain were estimated to range from a lower limit of 79×103 kg/year to an upper limit of 177×103 kg/year. The modeled vegetative emissions were mainly generated from the eastern and southern China. Using the estimated data, it is shown that mercury emissions from vegetation are comparable to that from anthropogenic sources during summer. However, the vegetative emissions decrease greatly during winter, leaving anthropogenic sources as the major sources of emission.

  8. Modeling aeolian erosion in presence of vegetation

    Science.gov (United States)

    Dupont, S.; Bergametti, G.; Simoëns, S.

    2014-02-01

    Semiarid landscapes are characterized by vegetated surfaces. Understanding the impact of vegetation on aeolian soil erosion is important for reducing soil erosion or limiting crop damage through abrasion or burial. In the present study, a saltation model fully coupled with a large-eddy simulation airflow model is extended to vegetated landscapes. From this model, the sensitivity of sand erosion to different arrangements and type of plants (shrub versus tree) representative of semiarid landscapes is investigated and the wind erosion reduction induced by plants is quantified. We show that saltation processes over vegetated surfaces have a limited impact on the mean wind statistics, the momentum extracted from the flow by saltating particles being negligible compared to that extracted by plants. Simulated sand erosion patterns resulting from plant distribution, i.e., accumulation and erosion areas, appear qualitatively consistent with previous observations. It is shown that sand erosion reduction depends not only on vegetation cover but also on plant morphology and plant distribution relative to the mean wind direction. A simple shear stress partitioning approach applied in shrub cases gives similar trends of sand erosion reduction as the present model following wind direction and vegetation cover. However, the magnitude of the reduction appears significantly different from one approach to another. Although shrubs trap saltating particles, trees appear more efficient than shrubs to reduce sand erosion. This is explained by the large-scale sheltering effect of trees compared to the local shrub one.

  9. Radiocesium cycling in vegetation and soil

    International Nuclear Information System (INIS)

    Data on cesium dynamics in vegetation and soils are reviewed. Special emphasis is placed on typical environments in the southeastern United States. Clay minerals of soil, especially micaceous types, effectively fix cesium and remove it from biotic components of ecosystems. Fallout 137Cs enters food chains principally by direct deposition on vegetation; uptake by the root pathway is usually less than direct contamination of plant foliage. Cesium-137 levels in vegetation of the southeastern U. S. Coastal Plain are estimated on the basis of direct deposition from the atmosphere and root uptake from soil. Estimated concentrations, based on current concepts of 137Cs dynamics in vegetation and fixation in soil, are in good agreement with observed values of 137Cs in vegetation collected in 1969 and 1970. Mechanisms of direct deposition and of increased uptake by roots due to the absence of micaceous clays adequately explain the higher levels of 137Cs in vegetation of the Coastal Plain and thus are responsible for the elevated 137Cs reported for milk of the Tampa, Fla., milkshed

  10. Psychosocial determinants of fruit and vegetable consumption.

    Science.gov (United States)

    Brug, J; Lechner, L; De Vries, H

    1995-12-01

    Psychosocial correlates of fruit and vegetable consumption were studied in an adult Dutch population (n = 367) based on the ASE model of attitudes, social influence and self-efficacy. Attitudes were a summation of beliefs about taste, different health consequences, and costs in time and money. Social influences were measured through the social stimulation respondents expected to get from important others to consume adequate amounts of fruit and vegetables and by asking the subjects about the behaviour of important others. Self-efficacy reflected the respondents' ability to consume adequate amounts of fruit and vegetables in various situations. Self-efficacy and attitudes were consistently and significantly associated with consumption of boiled or otherwise heated vegetables, of salads, and of fruit. Furthermore, respondents reporting low consumption of these food groups had lower self-efficacy expectations and less positive attitudes than subjects with relatively high consumption of fruit and vegetables. It is concluded that nutrition education aimed at stimulating fruit and vegetable consumption should focus especially on changing attitudes and self efficacy expectations.

  11. Weeds as important vegetables for farmers

    Directory of Open Access Journals (Sweden)

    Gisella S. Cruz-Garcia

    2012-12-01

    Full Text Available The objective of this study was to investigate the multiple uses and cognitive importance of edible weeds in Northeast Thailand. Research methods included focus group discussions and freelistings. A total of 43 weeds consumed as vegetable were reported, including economic, naturalized, agricultural and environmental weeds. The weedy vegetables varied considerably on edible parts, presenting both reproductive (flowers, fruits and seeds and vegetative organs (shoots, leaves, flower stalks, stems or the whole aerial part. The results of this study show that weedy vegetables are an important resource for rice farmers in this region, not only as a food but also because of the multiple additional uses they have, especially as medicine. The fact that the highest Cognitive Salience Index (CSI scores of all wild vegetables freelisted corresponded to weeds, reinforces the assertion that weeds are culturally cognitively important for local farmers as a vegetable source. This is a key finding, given that these species are targets of common pesticides used in this region.

  12. Emergence of river dynamics through changing vegetation patterns

    Science.gov (United States)

    van Oorschot, Mijke; Kleinhans, Maarten; Middelkoop, Hans; Geerling, Gertjan

    2016-04-01

    Riparian vegetation interacts with morphodynamic processes in rivers to create distinct habitat mosaics supporting a large biodiversity. The aim of our work is to quantitatively investigate the emergent patterns in vegetation and river morphology at the river reach scale by dynamically modelling the processes and their interactions. Here, we coupled an advanced morphodynamic model to a novel dynamic riparian vegetation model to study the interaction between vegetation and morphodynamics. Vegetation colonizes bare substrate within the seed dispersal window, passes several growth stages with different properties and can die through flooding, desiccation, uprooting, scour or burial. We have compared river morphology and vegetation patterns of scenarios without vegetation, with static vegetation that does not grow or die and several dynamic vegetation scenarios with a range of vegetation strategies and eco-engineering properties. Results show that dynamic vegetation has a decreased lateral migration of meander bends and maintains its active meandering behavior as opposed to the scenarios without vegetation and with static vegetation. Also the patterns in vegetation and fluvial morphology and the vegetation age distribution mostly resemble the natural situation when compared to aerial photos of the study area. We find that river dynamics, specifically sinuosity and sediment transport, are very sensitive to vegetation properties that determine vegetation density, settlement location and survival. Future work will include the effects of invasive species, addition of silt and the effect of various river management strategies.

  13. Cadeias produtivas do carvão vegetal na agricultura familiar no sul do Brasil

    Directory of Open Access Journals (Sweden)

    Marina Carrieri-Souza

    2014-08-01

    Full Text Available The charcoal production is an important income generating activity for family farmers in the south of Brazil, but this relevance is not officially recognized. Much of the charcoal found in retail establishments is produced clandestinely. In the market, the coal produced in a socially and environmentally responsible way can be confused with the coal produced in undesirable contexts. We seek to understand the conditions of charcoal production in family farms and how this production comes to the final consumer, based on the concept of supply chains. We conducted a study of three representative cases in southern Brazil, in the cities of Biguaçu, SC, Santa Rosa de Lima, SC and Bituruna, PR. The tools for data collection were questionnaires, interviews and informal conversations with actors of all links of the production chain and with technicians from environmental agencies and rural extension, as well as direct observation in communities. In the municipality of Biguaçu, we identified long, short face-to-face, short with spatial proximity and short spatially extended chains. In the municipalities of Bituruna and Santa Rosa de Lima, we identify only the long chains. We discuss about the several implicit norms that guide the behavior of social actors, identifying the marketing of coal in short chains as a way of creating strategies for entering the market and add value, based on the identification of the quality characteristics of the product, with emphasis on the compliance with the requirements of environmental production obtained in family farming.

  14. PROMOCIJA ZDRAVJA NA DELOVNEM MESTU

    OpenAIRE

    Kondić, Vesna

    2015-01-01

    Varnost in zdravje pri delu sta ključna elementa pri zagotavljanju bolj zdravega in daljšega poklicnega življenja. Problem: Delo neposredno vpliva na zdravje, saj ljudje na delovnem mestu preživijo veliko časa, zato je zagotavljanje varnosti in zdravja delavcev pri delu zelo pomemben člen, ki ga mora delodajalec tudi zakonsko upoštevati. Namen: Namen magistrskega dela je proučiti učinkovitost promocije zdravja na delovnem mestu z vidika varovanja zdravja zaposlenih in ozaveščanja zap...

  15. Evapotranspiration estimation in heterogeneous urban vegetation

    Science.gov (United States)

    Nagler, P. L.; Nouri, H.; Beecham, S.; Anderson, S.; Sutton, P.; Chavoshi, S.

    2015-12-01

    Finding a valid approach to measure the water requirements of mixed urban vegetation is a challenge. Evapotranspiration (ET) is the main component of a plant's water requirement. A better understanding of the ET of urban vegetation is essential for sustainable urbanisation. Increased implementation of green infrastructure will be informed by this work. Despite promising technologies and sophisticated facilities, ET estimation of urban vegetation remains insufficiently characterized. We reviewed the common field, laboratory and modelling techniques for ET estimation, mostly agriculture and forestry applications. We opted for 3 approaches of ET estimation: 1) an observational-based method using adjustment factors applied to reference ET, 2) a field-based method of Soil Water Balance (SWB) and 3) a Remote Sensing (RS)-based method. These approaches were applied to an experimental site to evaluate the most suitable ET estimation approach for an urban parkland. To determine in-situ ET, 2 lysimeters and 4 Neutron Moisture Meter probes were installed. Based on SWB principles, all input water (irrigation, precipitation and upward groundwater movements) and output water (ET, drainage, soil moisture and runoff) were measured monthly for 14 months. The observation based approach and the ground-based approach (SWB) were compared. Our predictions were compared to the actual irrigation rates (data provided by the City Council). Results suggest the observational-based method is the most appropriate urban ET estimation. We examined the capability of RS to estimate ET for urban vegetation. Image processing of 5 WorldView2 satellite images enabled modelling of the relationship between urban vegetation and vegetation indices derived from high resolution images. Our results indicate that an ETobservational-based -NDVI modelling approach is a reliable method of ET estimation for mixed urban vegetation. It also has the advantage of not depending on extensive field data collection.

  16. Mineral elements of some green vegetables

    International Nuclear Information System (INIS)

    Some of the mineral components of Allium porrum Linn, Brassica rapa and Medicago denticulata were studied. Extraction of minerals was carried out in three different ways (I) Ash solution was prepared and used for the determination of Na, K, Ca, P, Fe and Mg. (II) Perchloric acid extraction was employed for Na, K, Fe, Mg, Cu and Zinc. (III) Solvent extraction was used for Na and K. Determination of calcium was done titrimetrically, Na and K. Flame photometrically, P, Fe and Mg Spectrophotometrically, Cu and Zinc Atomic Absorption Spectrophotometrically. Allium porrum Linn was rich in Ca, K and Zinc, in Brassica rapa Fe, Mg and Na in Medicago denticalata P contents were greater. (author)

  17. FLOW STRUCTURE AND SEDIMENT TRANSPORT WITH IMPACTS OF AQUATIC VEGETATION

    Institute of Scientific and Technical Information of China (English)

    LIU Cheng; SHEN Yong-ming

    2008-01-01

    Aquatic vegetation plays an important role in the flow structure of open channels and thus changes the fate and the transport of sediment. This article proposes a three-dimensional turbulence model by introducing vegetation density and drag force into the control equations of water flow in the presence of vegetation. The model was used to calculate the impacts of submerged vegetation on the vertical profiles of longitudinal flow velocities, the changes of the depth-averaged flow velocities in a compound channel with emergent vegetation in the floodplain, the removal of suspended sediment from the channels by emergent vegetation, and the bed changes around and in a vegetated island. Numerical investigations show that aquatic vegetation retards flow in the vegetation zone, reduces the sediment transport capacity, and contributes to erosion on both sides of the vegetated island. Calculated results agree well with experimental results.

  18. HEALTHY PROPERTIES OF ENDIVE (CICHORIUM ENDIVIA L. DEPENDING ON THE VARIETY AND VEGETATIVE OF SEASON

    Directory of Open Access Journals (Sweden)

    Iwona Mentel

    2015-02-01

    Full Text Available The endive (Cichorium endivia L. is plant belonging to Asteraceae family. It is very popular vegetable in France, Italy and Germany. Endive because of its high content healthy components can be used in prevention against a lot of diseases. The studies were conducted on two varieties of endive: ‘Cigal’ and ‘Marconi’ during vegetative of season: 2009 and 2010. The research material was assessed for: dry matter, protein, dietary fibre, ash, selected minerals (Ca, Mg, K, P, Na, Fe, Zn, Mn, Cu levels and antioxidants (vitamin C, phenols components contents. Also, the calculation of the energy value, carbohydrates and the antioxidant potential of ABTS. were performed. The endive variety ‘Cigal’ was characterized higher content of calcium, magnesium, phosphorus, potassium, sodium, zinc and phenols components. While variety ‘Marconi’ contained more of dry matter, carbohydrates, dietary fibre, vitamin C, iron, copper and higher antioxidant activity. The studies showed statistically significant differences in terms of the content of components and antioxidant activity, between analysed varieties of vegetable and vegetation of season.

  19. Ecogeomorphology of Sand Dunes Shaped by Vegetation

    Science.gov (United States)

    Tsoar, H.

    2014-12-01

    Two dune types associated with vegetation are known: Parabolic and Vegetated Linear Dunes (VLDs), the latters are the dominant dune type in the world deserts. Parabolic dunes are formed in humid, sub-humid and semi-arid environments (rather than arid) where vegetation is nearby. VLDs are known today in semiarid and arid lands where the average yearly rainfall is ≥100 mm, enough to support sparse cover of vegetation. These two dune types are formed by unidirectional winds although they demonstrate a different form and have a distinct dynamics. Conceptual and mathematical models of dunes mobility and stability, based on three control parameters: wind power (DP), average annual precipitation (p), and the human impact parameter (μ) show that where human impact is negligible the effect of wind power (DP) on vegetative cover is substantial. The average yearly rainfall of 60-80 mm is the threshold of annual average rainfall for vegetation growth on dune sand. The model is shown to follow a hysteresis path, which explains the bistability of active and stabilized dunes under the same climatic conditions with respect to wind power. We have discerned formation of parabolic dunes from barchans and transverse dunes in the coastal plain of Israel where a decrease in human activity during the second half of the 20th century caused establishment of vegetation on the crest of the dunes, a process that changed the dynamics of these barchans and transverse dunes and led to a change in the shape of the windward slope from convex to concave. These dunes gradually became parabolic. It seems that VLDs in Australia or the Kalahari have always been vegetated to some degree, though the shrubs were sparser in colder periods when the aeolian erosion was sizeable. Those ancient conditions are characterized by higher wind power and lower rainfall that can reduce, but not completely destroy, the vegetation cover, leading to the formation of lee (shadow) dunes behind each shrub. Formation of

  20. The Impact of the Rise in Vegetable Prices on Vegetable Producer Behavior–Based on the survey of vegetable producers in Jiayu, Hubei Province

    Directory of Open Access Journals (Sweden)

    Liu Pan

    2015-01-01

    Full Text Available In order to study the impact of the rise in prices of vegetables on vegetable producers, and to increase the revenue of vegetable producers, this paper does a survey by anonymous sampling questionnaire. Results shows that: most vegetable growers think that vegetable prices should rise and would continue to rise, and that vegetable prices would increase their revenue, thus in the coming year they would expand the planting scale of vegetable variety whose increase rate is the largest in this year. But because of the increase of logistics costs and production costs, some farmers benefit very little from the rising trend of vegetable prices. Most farmers expect too much in the trend estimation of the prices of vegetables and also lack of planning and forward-looking in production, thus the planting area of single variety is often decided by the market of previous year. According to analysis of the impact of the rise in vegetable prices on vegetable producer behavior, this paper gives the following suggestions to increase revenue of vegetable producers: change the mode of thinking, improve rural information platform, and increase capital investment for vegetable production base.

  1. ANALYSING LONGITUDINAL TURBULENCE INTENSITY IN VEGETATED CHANNELS

    Directory of Open Access Journals (Sweden)

    Francesco Giuseppe Carollo

    2007-12-01

    Full Text Available Vegetation altering hydrodynamic conditions of an open channel flow controls the exchanges of sediment, nutrients and contaminants. In this paper the turbulence structure of open-channel flow over a flexible grass vegetation is investigated. Velocity measurements were carried out, in a rectangular flume, using a 2D-ADV (Acoustic Doppler Velocimeter for different values of stem concentration, water discharge, and bed slope. The experimental results showed that: 1 the maximum value of the longitudinal turbulence intensity occurs at a water depth close to the bent vegetation height; 2 the turbulence intensity damps for increasing values of the stem concentration; 3 above the vegetation height, an exponential distribution, similar to Nezu’s law, can be fitted to the measured longitudinal turbulence intensity profile. Finally, a new relative turbulence intensity distribution is proposed and fitted to the measured profiles. This relative turbulence intensity distribution needs the estimate of two parameters coinciding with the vegetation height and the water depth at which the maximum flow velocity occurs.

  2. Flavonoids as fruit and vegetable intake biomarkers

    DEFF Research Database (Denmark)

    Krogholm, Kirstine Suszkiewicz

    Most validation studies show that the food frequency questionnaire (FFQ) is rather low in precision and accuracy, and there is an ongoing debate regarding the applicability of such self-reported data with regard to diet-disease relationships. However, no other method has so far been able to repla....... Collection of 24h urine is difficult and time consuming, and therefore morning spot urine may be a more convenient tool than 24h urine for validating the fruit and vegetable consumption in large population studies....... of fruit and vegetable intake (Nielsen et al. 2002). The overall aim of the present Ph.D. thesis was to further develop and validate this potentially new fruit and vegetable biomarker and furthermore use it for the validation of self-reported dietary intake of fruits and vegetables in intervention...... and cohort studies. The Ph.D. thesis contains four scientific papers. Paper I provides evidence that the sum of 7 flavonoids in 24h urine respond in a linear and sensitive manner to moderate increases in the intake of fruits and vegetables, and thus consolidates that the flavonoids are a valid biomarker...

  3. Heat Waves, Urban Vegetation, and Air Pollution

    Science.gov (United States)

    Churkina, G.; Grote, R.; Butler, T. M.

    2014-12-01

    Fast-track programs to plant millions of trees in cities around the world aim at the reduction of summer temperatures, increase carbon storage, storm water control, provision of space for recreation, as well as poverty alleviation. Although these multiple benefits speak positively for urban greening programs, the programs do not take into account how close human and natural systems are coupled in urban areas. Elevated temperatures together with anthropogenic emissions of air and water pollutants distinguish the urban system. Urban and sub-urban vegetation responds to ambient changes and reacts with pollutants. Neglecting the existence of this coupling may lead to unforeseen drawbacks of urban greening programs. The potential for emissions from urban vegetation combined with anthropogenic emissions to produce ozone has long been recognized. This potential increases under rising temperatures. Here we investigate how global change induced heat waves affect emissions of volatile organic compounds (VOC) from urban vegetation and corresponding ground-level ozone levels. We also quantify other ecosystem services provided by urban vegetation (e.g., cooling and carbon storage) and their sensitivity to climate change. In this study we use Weather Research and Forecasting Model with coupled atmospheric chemistry (WRF-CHEM) to quantify these feedbacks in Berlin, Germany during the heat waves in 2003 and 2006. We highlight the importance of the vegetation for urban areas under changing climate and discuss associated tradeoffs.

  4. Floristics and structure of fallow vegetation

    Directory of Open Access Journals (Sweden)

    R.M. Ubom

    2012-08-01

    Full Text Available Vegetation-environment (soil was studied in fallow plots in Uyo, ranging from 0-year-old to 6-year-old. Systematic sampling method was used to sample both vegetation and soil. The parameters determined for vegetation included; Height, Frequency, Basal area and Crown cover for all species. The soil physical and chemical properties were also determined. Results obtained showed that there were eight (8 plant species in the 0-year old plot, 12 species in the 2-year old plot, 20 species of plants in 4-year old plot and 23 species of plants in the 6-year old plot. The soils were acidic across the years of fallow, but most acidic in 6-year old plot. Organic carbon was high in 4-year old plot, exchangeable cations decreased along the fallow, available phosphorus increased in 0, 2 and 4 year old and decreased in 6-year old plot. The percentage of sand increased as years of fallow increased. The texture of the soil in all the plots was loamy sand. Correlation co-efficient of soil parameters showed that magnesium, potassium, zinc, irons, silt, organic carbon, calcium, exchangeable acidity, total nitrogen, base saturation influenced the vegetation parameters. The vegetation parameters were significant at P = 0.05.

  5. Linking models and data on vegetation structure

    Science.gov (United States)

    Hurtt, G. C.; Fisk, J.; Thomas, R. Q.; Dubayah, R.; Moorcroft, P. R.; Shugart, H. H.

    2010-06-01

    For more than a century, scientists have recognized the importance of vegetation structure in understanding forest dynamics. Now future satellite missions such as Deformation, Ecosystem Structure, and Dynamics of Ice (DESDynI) hold the potential to provide unprecedented global data on vegetation structure needed to reduce uncertainties in terrestrial carbon dynamics. Here, we briefly review the uses of data on vegetation structure in ecosystem models, develop and analyze theoretical models to quantify model-data requirements, and describe recent progress using a mechanistic modeling approach utilizing a formal scaling method and data on vegetation structure to improve model predictions. Generally, both limited sampling and coarse resolution averaging lead to model initialization error, which in turn is propagated in subsequent model prediction uncertainty and error. In cases with representative sampling, sufficient resolution, and linear dynamics, errors in initialization tend to compensate at larger spatial scales. However, with inadequate sampling, overly coarse resolution data or models, and nonlinear dynamics, errors in initialization lead to prediction error. A robust model-data framework will require both models and data on vegetation structure sufficient to resolve important environmental gradients and tree-level heterogeneity in forest structure globally.

  6. Quality of Vegetable Waste Silages Treated with Various Carbohydrate Sources

    OpenAIRE

    R. Ridwan; Y. Widyastuti; W.D. Astuti; E. Yetti

    2013-01-01

    The aim of this research was to evaluate the quality of vegetable waste silages, using rice bran, onggok (cassava flour waste) and pollard as carbohydrate sources. Vegetable waste was collected from local traditional market, consisted of corn husk, chinese cabbage and cabbage. Research was held in randomized block design consisted of six treatments with 3 replications. Treatments were (T1) vegetable waste + rice bran, (T2) vegetable waste + rice bran + rice straw, (T3) vegetable waste + onggo...

  7. European Vegetation Archive (EVA): an integrated database of European vegetation plots

    DEFF Research Database (Denmark)

    Chytrý, M; Hennekens, S M; Jiménez-Alfaro, B;

    2015-01-01

    The European Vegetation Archive (EVA) is a centralized database of European vegetation plots developed by the IAVS Working Group European Vegetation Survey. It has been in development since 2012 and first made available for use in research projects in 2014. It stores copies of national and regional...... vegetation- plot databases on a single software platform. Data storage in EVA does not affect on-going independent development of the contributing databases, which remain the property of the data contributors. EVA uses a prototype of the database management software TURBOVEG 3 developed for joint management...... requests, selections and provisions according to the approved EVA Data Property and Governance Rules. By 30 June 2015, 61 databases from all European regions have joined EVA, contributing in total 1 027 376 vegetation plots, 82% of them with geographic coordinates, from 57 countries. EVA provides a unique...

  8. Dyes adsorption blue vegetable and blue watercolor by natural zeolites modified with surfactants

    International Nuclear Information System (INIS)

    In this work was carried out the dyes removal blue vegetable and blue watercolor of aqueous solutions, to 20 C, at different times and using a zeolite mineral of Parral (Chihuahua, Mexico) modified with hexadecyl trimethyl ammonium bromide or dodecyl trimethyl ammonium bromide. The zeolite was characterized before and after of its adaptation with NaCl and later with HDTMABr and DTMABr. For the materials characterization were used the scanning electron microscopy of high vacuum; elementary microanalysis by X-ray spectroscopy of dispersed energy and X-ray diffraction techniques. It was found that the surfactant type absorbed in the zeolite material influences on the adsorption process of the blue dye. Likewise, the chemical structure between the vegetable blue dye and the blue watercolor, determines the efficiency of the color removal of the water, by the zeolites modified with the surfactants. (Author)

  9. Valores na escola

    Directory of Open Access Journals (Sweden)

    Menin Maria Suzana De Stefano

    2002-01-01

    Full Text Available Neste texto pretende-se discorrer sobre valores morais na escola e suas implicações para a formação de professores. Para tanto discutir-se-á, em primeiro lugar, e brevemente, o que são valores morais, ou éticos, e como a escola pode situar-se em relação a eles. Em seguida, serão relatadas algumas observações a respeito de valores de professores e práticas daí decorrentes. São comentados resultados de pesquisa que ilustram a transmissão de valores de forma doutrinal e a educação moral e cívica tal como realizada na ditadura militar, e, por outro lado, a posição relativista e/ou de laissez-faire que certas escolas podem adotar, metodologicamente, sobre a educação em valores. Finalmente, defender-se-á a idéia de que é necessária uma discussão sobre valores pelos diversos membros da escola e uma opção por uma metodologia para ensiná-los, seja os professores, em sua formação inicial e continuada, seja os alunos. A teoria de desenvolvimento moral de Jean Piaget será apresentada como uma referência possível para a educação em valores. Exemplos de situações escolares de conflito de valores entre direção, pais e alunos são discutidas para ilustrar como uma escola pode adotar um procedimento democrático de educação em valores, que se apresenta como um terceiro caminho possível de educação moral nas escolas, além das posições doutrinárias ou relativistas.

  10. Use of spectral channels and vegetation indices from satellite VEGETATION time series for the Post-Fire vegetation recovery estimation

    Science.gov (United States)

    Coluzzi, Rosa; Lasaponara, Rosa; Montesano, Tiziana; Lanorte, Antonio; de Santis, Fortunato

    2010-05-01

    Satellite data can help monitoring the dynamics of vegetation in burned and unburned areas. Several methods can be used to perform such kind of analysis. This paper is focused on the use of different satellite-based parameters for fire recovery monitoring. In particular, time series of single spectral channels and vegetation indices from SPOT-VEGETATION have investigated. The test areas is the Mediterranean ecosystems of Southern Italy. For this study we considered: 1) the most widely used index to follow the process of recovery after fire: normalized difference vegetation index (NDVI) obtained from the visible (Red) and near infrared (NIR) by using the following formula NDVI = (NIR_Red)/(NIR + Red), 2) moisture index MSI obtained from the near infrared and Mir for characterization of leaf and canopy water content. 3) NDWI obtained from the near infrared and Mir as in the case of MSI, but with the normalization (as the NDVI) to reduce the atmospheric effects. All analysis for this work was performed on ten-daily normalized difference vegetation index (NDVI) image composites (S10) from the SPOT- VEGETATION (VGT) sensor. The final data set consisted of 279 ten-daily, 1 km resolution NDVI S1O composites for the period 1 April 1998 to 31 December 2005 with additional surface reflectance values in the blue (B; 0.43-0.47,um), red (R; 0.61-0.68,um), near-infrared (NIR; 0.78-0.89,um) and shortwave-infrared (SWIR; 1.58-1.75,um) spectral bands, and information on the viewing geometry and pixel status. Preprocessing of the data was performed by the Vlaamse Instelling voor Technologisch Onderzoek (VITO) in the framework of the Global Vegetation Monitoring (GLOVEG) preprocessing chain. It consisted of the Simplified Method for Atmospheric Correction (SMAC) and compositing at ten-day intervals based on the Maximum Value Compositing (MVC) criterion. All the satellite time series were analysed using the Detrended Fluctuation Analysis (DFA) to estimate post fire vegetation recovery

  11. Regime shifts in models of dryland vegetation

    CERN Document Server

    Zelnik, Yuval R; Yizhaq, Hezi; Bel, Golan; Meron, Ehud

    2013-01-01

    Drylands are pattern-forming systems showing self-organized vegetation patchiness, multiplicity of stable states and fronts separating domains of alternative stable states. Pattern dynamics, induced by droughts or disturbances, can result in desertification shifts from patterned vegetation to bare soil. Pattern-formation theory suggests various scenarios for such dynamics; an abrupt global shift involving a fast collapse to bare soil, a gradual global shift involving the expansion and coalescence of bare-soil domains, and an incipient shift to a hybrid state consisting of stationary bare-soil domains in an otherwise periodic pattern. Using models of dryland vegetation we address the question which of these scenarios can be realized. We found that the models can be split into two groups: models that exhibit multiplicity of periodic-pattern and bare-soil states, and models that exhibit, in addition, multiplicity of hybrid states. Furthermore, in all models we could not identify parameter regimes in which bare-s...

  12. Mercury levels in cereals and vegetables

    International Nuclear Information System (INIS)

    The mercury content of cereals and market vegetables was determined with the flameless Atomic Absorption Spectrophotometry cold vapor method. Except for one sample the values for rye and wheat are below 100 ppb related to plant dry matter. Significant differences in the mercury content during the growth period could not be established. The average Hg-concentration in the kernel was 11 ppb. Vegetables of the Viennese market varied in Hg content between 0.5 and 40.7 ppb (mean values on wet weight basis). Only a few samples of champignons exceeded the permitted 50 ppb Hg tolerance limit, but 89% of the samples showed values of less than or equal to 10 ppb. At per head level of 74 kg vegetables consumed in Austria and an accepted mercury level of 10 ppb the weekly mercury intake is less than 5% of the 300 μg total Hg dosis per week tolerated by the WHO/FAO. (author)

  13. The impact of spices on vegetable consumption

    DEFF Research Database (Denmark)

    Li, Zhaoping; Krak, Michael; Zerlin, Alona;

    2015-01-01

    This pilot study was conducted to evaluate the impact of spices added to broccoli, cauliflower, and spinach on amount and rate of vegetable consumption. Twenty overweight subjects who routinely ate less than three daily servings of vegetables were recruited. On six occasions, subjects were assigned...... in random order to eat broccoli, cauliflower, or spinach with or without added spices. Dishes were placed on a modified Universal Eating Monitor (UEM) that recorded rate of eating (g/sec), duration of eating (min) and total amount consumed (g). Total intake and duration of eating were increased...... significantly for broccoli with spices compared to plain broccoli, but there was no significant difference for cauliflower or spinach. No significant differences were noted in any of the visual analog scale (VAS) responses. This study suggests that adding spices may increase vegetable intake, but more studies...

  14. Biological effects of fruit and vegetables

    DEFF Research Database (Denmark)

    Dragsted, L. O.; Krath, B.; Ravn-Haren, Gitte;

    2006-01-01

    A strong and persistent effect of plant-derived foods on the prevention of lifestyle diseases has emerged from observational studies. Several groups of constituents in plants have been identified as potentially health promoting in animal studies, including cholesterol-lowering factors, antioxidants......, providing 600hairspg fruit and vegetables/d or in the controls a carbohydrate-rich drink to balance energy intake. Surrogate markers of oxidative damage to DNA, protein and lipids, enzymic defence and lipid metabolism were determined in blood and urine. It was found that a high intake of fruit...... and vegetables tends to increase the stability of lipids towards oxidative damage. Markers of oxidative enzymes indicate a steady increase in glutathione peroxidase (GPX1) activity in erythrocytes during intervention with fruit and vegetables but there is no effect on GPX1 transcription levels in leucocytes...

  15. Analysis on the Comparison of Vegetable Price

    Institute of Scientific and Technical Information of China (English)

    Na; LI; Jianmin; SHI

    2013-01-01

    In 2010,the garlic,bean and ginger became more expensive than ever,which made some people’s life harder.In response to such phenomena,the retail price and wholesale price at the producers’ end,the retail price and wholesale price at distributors’ end,and consumption related data(disposable income,consumption expenditure,fresh vegetables amount from 2004 to 2011 were compared and analyzed in this paper.Results showed that the average price(selling price,wholesale price and retail price) of five kinds of vegetables generally rose.There was certain differences in the price change range.Since 2004,especially in 2009 the vegetable prices had been so high that it had influenced the life of low income families in China.

  16. Encontro de Aedes (Stegomyia albopictus (Skuse em Bromeliaceae na periferia de São Paulo, SP, Brasil

    Directory of Open Access Journals (Sweden)

    Natal Delsio

    1997-01-01

    Full Text Available Foram coletadas larvas de Aedes albopictus em uma planta da família Bromeliaceae, na periferia da cidade de São Paulo, SP, Brasil. Esse encontro abre perspectivas de estudo para avaliação do potencial desse vegetal como criadouro desse mosquito no País.

  17. Heavy metal pollution in vegetables grown in the vicinity of a multi-metal mining area in Gejiu, China: total concentrations, speciation analysis, and health risk.

    Science.gov (United States)

    Li, Yanyan; Wang, Hongbin; Wang, Haijuan; Yin, Fei; Yang, Xiaoyan; Hu, Yongjun

    2014-11-01

    A field survey was conducted to investigate the present situation and health risk of arsenic (As), lead (Pb), cadmium (Cd), copper (Cu), and zinc (Zn) in soils and vegetables in a multi-metal mining area, Gejiu, China. Furthermore, three vegetables (water spinach, potato, and summer squash) containing high metal concentrations were selected to further analyze metal speciation. The results showed that the average concentrations of five metals in soil exceeded the limiting values, and their bioavailable concentrations were significantly positively correlated to the total ones. Heavy metals in the edible parts of vegetables also exceeded the corresponding standards. The leaves of pakchoi, peppermint, and coriander had a strong metal-accumulative ability and they were not suitable for planting. Except the residue forms, the main forms of metals in the edible parts of three selected vegetables were ethanol-, NaCl-, and HAc-extractable fractions for As, Pb, and Cd, respectively; however, Cu was mainly presented as NaCl-extractable and Zn as HAc-extractable fractions. A high proportion of ethanol-extractable As showed that As bioactivity and toxic effects were the highest. Although the total and bioavailable Cd were high in soil, its speciation in vegetables was mainly presented as HAc-extractable fraction, which has a relatively low bioactivity. Lead and arsenic were imposing a serious threat on the local residents via vegetable consumption.

  18. Improving Fishpond Sediment by Aquatic Vegetable Rotation

    Directory of Open Access Journals (Sweden)

    Ling Tao

    2012-10-01

    Full Text Available Continuously intensive fish farming results in pond degradation that needs to be improved. Therefore, the experiment rotating intensive fish culture with two aquatic vegetables lotus (Nelumbo nucifera and water chestnuts (Eleocharis dulcis cultivation is conducted aiming at determining the effect of rotation as a sediment management technique on improving the pond sediment and assessing the food safety risk of the vegetables cultivated in the pond sediment from the aspects of heavy metal. The results showed that after rotation, the content of Total Nitrogen (TN and Organic Matter (OM in the upper 10 cm sediment decreased significantly (p<0.05, with TN content reduced 1.05 and 0.74 g/kg; OM content reduced 0.59 and 0.37%, respectively. The contents of Organic-Phosphorus (OP and Fe/Al-bound Phosphorus (Fe/Al-P in the sediment decreased significantly (p<0.05, with OP reduced 0.05 and 0.04 g/kg, Fe/Al-P reduced 0.19 and 0.15 g/kg, respectively. The heavy metal contents of As, Pb, Cd, Hg, Cr and Zn except Cu in the pond sediment were under Chinese National II Soil Criterion and the contents of As, Pb, Cd, Hg, Cr, Cu and Zn in edible vegetable rhizomes satisfied Safety Requirements for Non-environmental Pollution Vegetable. Rotation of fish culture with aquatic vegetables cultivation effectively mitigated excessive nutrient load in the sediment while recycled the nutrient in the sediment to produce safe vegetables. It could be considered as a viable sediment quality improving technique.

  19. Arizona Vegetation Resource Inventory (AVRI) accuracy assessment

    Science.gov (United States)

    Szajgin, John; Pettinger, L.R.; Linden, D.S.; Ohlen, D.O.

    1982-01-01

    A quantitative accuracy assessment was performed for the vegetation classification map produced as part of the Arizona Vegetation Resource Inventory (AVRI) project. This project was a cooperative effort between the Bureau of Land Management (BLM) and the Earth Resources Observation Systems (EROS) Data Center. The objective of the accuracy assessment was to estimate (with a precision of ?10 percent at the 90 percent confidence level) the comission error in each of the eight level II hierarchical vegetation cover types. A stratified two-phase (double) cluster sample was used. Phase I consisted of 160 photointerpreted plots representing clusters of Landsat pixels, and phase II consisted of ground data collection at 80 of the phase I cluster sites. Ground data were used to refine the phase I error estimates by means of a linear regression model. The classified image was stratified by assigning each 15-pixel cluster to the stratum corresponding to the dominant cover type within each cluster. This method is known as stratified plurality sampling. Overall error was estimated to be 36 percent with a standard error of 2 percent. Estimated error for individual vegetation classes ranged from a low of 10 percent ?6 percent for evergreen woodland to 81 percent ?7 percent for cropland and pasture. Total cost of the accuracy assessment was $106,950 for the one-million-hectare study area. The combination of the stratified plurality sampling (SPS) method of sample allocation with double sampling provided the desired estimates within the required precision levels. The overall accuracy results confirmed that highly accurate digital classification of vegetation is difficult to perform in semiarid environments, due largely to the sparse vegetation cover. Nevertheless, these techniques show promise for providing more accurate information than is presently available for many BLM-administered lands.

  20. A aposta na filosofia

    Directory of Open Access Journals (Sweden)

    Márcio Suzuki

    2011-12-01

    Full Text Available Para Hume, filosofar é uma atividade semelhante às demais ocupações humanas. A decisão que leva à atividade filosófica é menos resultado de uma argumentação teórica do que fruto de um cálculo prático, que é entendido como uma caça ou um jogo. O objetivo deste trabalho será o de mostrar que no jogo filosófico perde quem joga sério demais. A aposta na filosofia tem que passar pelo bom humor e pela diversão: uma resposta a Pascal?For Hume, philosophy is in itself neither more nor less important than other human activities. On the contrary, it can be explained from its resemblance with game and hunting. If one chooses to dedicate himself to philosophy, his decision is not the consequence of logical reasoning, but depends on practical evaluation, which has something to do with gambling. The following text tries to show that in philosophy, like in other games, the loser will be the one who plays too earnestly. The philosophical game requires good humour and some relaxation: Is this a good answer to Pascal's pari?

  1. Straight Vegetable Oil as a Diesel Fuel?

    Energy Technology Data Exchange (ETDEWEB)

    None

    2014-01-01

    Biodiesel, a renewable fuel produced from animal fats or vegetable oils, is popular among many vehicle owners and fleet managers seeking to reduce emissions and support U.S. energy security. Questions sometimes arise about the viability of fueling vehicles with straight vegetable oil (SVO), or waste oils from cooking and other processes, without intermediate processing. But SVO and waste oils differ from biodiesel (and conventional diesel) in some important ways and are generally not considered acceptable vehicle fuels for large-scale or long-term use.

  2. Continuous wok-frying of vegetables:

    DEFF Research Database (Denmark)

    Adler-Nissen, Jens

    2007-01-01

    A new process for continuous stir-frying in industrial scale has been developed for producing convenience high-quality vegetables. The understanding of the dynamics of heat and mass transfer during stir-frying is crucial for up-scaling and controlling the process. The effect of different factors...... of loosely bound water from the vegetables allows the products to be frozen and re-heated without drip loss, and it is also an advantage when using them as ingredients in composite foods, such as pâtés. Examples developed by a professional chef indicate that he saved up to half of the cooking time compared...

  3. Multispectral Imaging of Wok-Fried Vegetables

    DEFF Research Database (Denmark)

    Clemmensen, Line Katrine Harder; Dissing, Bjørn Skovlund; Hyldig, Grethe;

    2012-01-01

    Quality control in the food industry is often performed by measuring various chemical compounds in the food involved. The authors propose an imaging concept for acquiring high-quality multispectral images to evaluate optical reflection changes in carrots and celeriac over a period of 14 days....... For comparison, sensory analysis was performed on the same samples. Prior to multispectral image recording, the vegetables were prefried and frozen at -30 °C for 4 months. During the 14 days of image recording, the vegetables were kept at +5 °C. In this period, surface changes and thereby reflectance properties...

  4. Methyl Ester (Bio diesel) Production from Waste Cooking Vegetable Oil by Microwave Irradiation

    International Nuclear Information System (INIS)

    In this study we tried to develop, test and optimize a batch microwave system using waste cooking vegetable oil (WCVO) that was used as bio diesel feedstock. Two catalysts, sodium hydroxide (NaOH) and potassium hydroxide (KOH) were tested in this study. Transesterification reactions between oil and methanol were carried out in presence of microwaves. It was observed that by using of microwaves, the reaction times were drastically reduced. As high as 99.5 % conversions could be achieved for 0.5% KOH concentration. Moreover, quality analysis of bio diesels according to international standards was performed and the samples were found to meet the necessary specifications. (author)

  5. A Nonlinear Coupled Soil Moisture-Vegetation Model

    Institute of Scientific and Technical Information of China (English)

    LIU Shikuo; LIU Shida; FU Zuntao; SUN Lan

    2005-01-01

    Based on the physical analysis that the soil moisture and vegetation depend mainly on the precipitation and evaporation as well as the growth, decay and consumption of vegetation a nonlinear dynamic coupled system of soil moisture-vegetation is established. Using this model, the stabilities of the steady states of vegetation are analyzed. This paper focuses on the research of the vegetation catastrophe point which represents the transition between aridness and wetness to a great extent. It is shown that the catastrophe point of steady states of vegetation depends mainly on the rainfall P and saturation value v0, which is selected to balance the growth and decay of vegetation. In addition, when the consumption of vegetation remains constant, the analytic solution of the vegetation equation is obtained.

  6. Comparison modeling for alpine vegetation distribution in an arid area.

    Science.gov (United States)

    Zhou, Jihua; Lai, Liming; Guan, Tianyu; Cai, Wetao; Gao, Nannan; Zhang, Xiaolong; Yang, Dawen; Cong, Zhentao; Zheng, Yuanrun

    2016-07-01

    Mapping and modeling vegetation distribution are fundamental topics in vegetation ecology. With the rise of powerful new statistical techniques and GIS tools, the development of predictive vegetation distribution models has increased rapidly. However, modeling alpine vegetation with high accuracy in arid areas is still a challenge because of the complexity and heterogeneity of the environment. Here, we used a set of 70 variables from ASTER GDEM, WorldClim, and Landsat-8 OLI (land surface albedo and spectral vegetation indices) data with decision tree (DT), maximum likelihood classification (MLC), and random forest (RF) models to discriminate the eight vegetation groups and 19 vegetation formations in the upper reaches of the Heihe River Basin in the Qilian Mountains, northwest China. The combination of variables clearly discriminated vegetation groups but failed to discriminate vegetation formations. Different variable combinations performed differently in each type of model, but the most consistently important parameter in alpine vegetation modeling was elevation. The best RF model was more accurate for vegetation modeling compared with the DT and MLC models for this alpine region, with an overall accuracy of 75 % and a kappa coefficient of 0.64 verified against field point data and an overall accuracy of 65 % and a kappa of 0.52 verified against vegetation map data. The accuracy of regional vegetation modeling differed depending on the variable combinations and models, resulting in different classifications for specific vegetation groups.

  7. Comparison modeling for alpine vegetation distribution in an arid area.

    Science.gov (United States)

    Zhou, Jihua; Lai, Liming; Guan, Tianyu; Cai, Wetao; Gao, Nannan; Zhang, Xiaolong; Yang, Dawen; Cong, Zhentao; Zheng, Yuanrun

    2016-07-01

    Mapping and modeling vegetation distribution are fundamental topics in vegetation ecology. With the rise of powerful new statistical techniques and GIS tools, the development of predictive vegetation distribution models has increased rapidly. However, modeling alpine vegetation with high accuracy in arid areas is still a challenge because of the complexity and heterogeneity of the environment. Here, we used a set of 70 variables from ASTER GDEM, WorldClim, and Landsat-8 OLI (land surface albedo and spectral vegetation indices) data with decision tree (DT), maximum likelihood classification (MLC), and random forest (RF) models to discriminate the eight vegetation groups and 19 vegetation formations in the upper reaches of the Heihe River Basin in the Qilian Mountains, northwest China. The combination of variables clearly discriminated vegetation groups but failed to discriminate vegetation formations. Different variable combinations performed differently in each type of model, but the most consistently important parameter in alpine vegetation modeling was elevation. The best RF model was more accurate for vegetation modeling compared with the DT and MLC models for this alpine region, with an overall accuracy of 75 % and a kappa coefficient of 0.64 verified against field point data and an overall accuracy of 65 % and a kappa of 0.52 verified against vegetation map data. The accuracy of regional vegetation modeling differed depending on the variable combinations and models, resulting in different classifications for specific vegetation groups. PMID:27307276

  8. CRMS vegetation analytical team framework: Methods for collection, development, and use of vegetation response variables

    Science.gov (United States)

    Cretini, Kari F.; Visser, Jenneke M.; Krauss, Ken W.; Steyer, Gregory D.

    2011-01-01

    This document identifies the main objectives of the Coastwide Reference Monitoring System (CRMS) vegetation analytical team, which are to provide (1) collection and development methods for vegetation response variables and (2) the ways in which these response variables will be used to evaluate restoration project effectiveness. The vegetation parameters (that is, response variables) collected in CRMS and other coastal restoration projects funded under the Coastal Wetlands Planning, Protection and Restoration Act (CWPPRA) are identified, and the field collection methods for these parameters are summarized. Existing knowledge on community and plant responses to changes in environmental drivers (for example, flooding and salinity) from published literature and from the CRMS and CWPPRA monitoring dataset are used to develop a suite of indices to assess wetland condition in coastal Louisiana. Two indices, the floristic quality index (FQI) and a productivity index, are described for herbaceous and forested vegetation. The FQI for herbaceous vegetation is tested with a long-term dataset from a CWPPRA marsh creation project. Example graphics for this index are provided and discussed. The other indices, an FQI for forest vegetation (that is, trees and shrubs) and productivity indices for herbaceous and forest vegetation, are proposed but not tested. New response variables may be added or current response variables removed as data become available and as our understanding of restoration success indicators develops. Once indices are fully developed, each will be used by the vegetation analytical team to assess and evaluate CRMS/CWPPRA project and program effectiveness. The vegetation analytical teams plan to summarize their results in the form of written reports and/or graphics and present these items to CRMS Federal and State sponsors, restoration project managers, landowners, and other data users for their input.

  9. Metrópoles, cobertura vegetal, áreas verdes e saúde

    Directory of Open Access Journals (Sweden)

    Luís Fernando Amato-Lourenço

    2016-04-01

    Full Text Available A falta de planejamento no processo de urbanização das grandes metrópoles tem produzido numerosas externalidades negativas, entre elas a supressão de sua cobertura vegetal e de áreas verdes. Inúmeros benefícios têm sido reportados sobre como a presença da vegetação no meio ambiente urbano favorece fatores ambientais, sociais e econômicos, influenciando na saúde da população. O presente trabalho busca apresentar uma série de estudos com enfoque na associação entre áreas verdes e saúde e também uma sucinta reflexão sobre a importância do assunto no município de São Paulo.

  10. VPLIV MEDIJEV NA PORAST KRIMINALITETE

    OpenAIRE

    Plešivčnik, Petra

    2011-01-01

    V diplomski nalogi sem podrobneje predstavila vpliv medijev na kriminaliteto in skušala ugotoviti ali imajo mediji kakšen vpliv na porast le-te. V prvem poglavju sem se osredotočila na zastavitev nekaterih hipotez skozi diplomsko nalogo, nato pa nadaljevala z razvojem medijev, razčlenitvijo množičnih medijev in predstavila nekaj njihovih učinkov. V tretjem poglavju sem povzela korelacijo med nasiljem in posameznikom, ter bolj konkretno nadaljevala s predstavitvijo same kriminalitete v medijih...

  11. VPLIV KULTURE NA MOTIVACIJO ZAPOSLENIH

    OpenAIRE

    Gjergjek, Andreja

    2012-01-01

    Pri diplomskem delu smo se osredotočili na proučevanje kulture in motivacije. Opredelili smo pojem kulture in njene sestavine. V okviru nacionalne kulture smo opredelili dela Hofsteda, Trompenaarsa, Halla, Ronena in Shenkara. V nadaljevanju smo opredelili pojem motivacije in predstavili motivacijske dejavnike. Pojasnili smo tudi vpliv kulture na motivacijo zaposlenih. Kultura je način ţivljenja pripadnikov neke druţbe. Obsega celotno področje idej, navad, prepričanj, jezika, vzorcev vedenj...

  12. TRGOVANJE NA IZBRANEM TRGU - FOREX

    OpenAIRE

    Ambrož, Sabina

    2012-01-01

    V delu diplomskega seminarja je obravnavana tematika trgovanja na valutnem trgu. Trgovanje z valutami je v zadnjem desetletju doseglo velik razvoj, močno pa je narasla tudi priljubljenost valutnega trga Forex, saj se zaradi enostavnega pristopa in možnosti velikih zaslužkov zanj odloča vse več posameznikov. V teoretičnem delu povzamemo ključne elemente, ki jih mora poznati začetnik na tem trgu. V empiričnem delu pa poskušamo na praktičnem primeru pokazati primer trgovanja s trendom in vstopom...

  13. Uwarunkowania procesu transformacji na Ukrainie

    OpenAIRE

    Michalski, Tomasz; Kuczabski, Aleksander

    2014-01-01

    W pierwszej części artykułu omówiono główne czynniki (wewnętrzne i zewnętrzne), które wpłynęły na procesy transformacji ustrojowej w europejskich i zakaukaskich krajach postkomunistycznych. W drugiej części artykułu skupiono się na czynnikach, które zadecydowały, że jak dotychczas proces transformacji ustrojowej na Ukrainie jest bardzo słabo zaawansowany.

  14. A MODIS-based vegetation index climatology

    Science.gov (United States)

    Our motivation here is to provide information for the NASA Soil Moisture Active Passive (SMAP) satellite soil moisture retrieval algorithms (launch in 2014). Vegetation attenuates the signal and the algorithms must correct for this effect. One approach is to use data that describes the canopy water ...

  15. Vegetable oil base stocks for lubricants

    Energy Technology Data Exchange (ETDEWEB)

    Garces, R.; Martinez-Force, E.; Salas, J.

    2011-07-01

    The use of vegetable biodegradable base stocks for lubricant oils present several advantages over the much more extended mineral bases. These advantages refer to biodegradability, a renewable feedstock of local production, lubricant and viscosity index and lower costs than synthetic lubricant bases. Despite these benefits, their use in industry and motor vehicles is not yet extensive due their lower stability and higher pour points. Vegetable oils are esters of fatty acids and glycerol, and their physicochemical properties rely mainly on the composition of their acyl moieties. Thus, to assure the maximum levels of stability while maintaining acceptable behavior at low temperatures, monounsaturated fatty acids are preferred for this purpose. The presence of natural antioxidants also improves the properties of these vegetable based stocks as lubricants. These oils usually require additives to improve their viscosity value, oxidative stability and properties at low temperatures. In the present work, the different sources of vegetable oils appropriate for bio lubricant production were reviewed. Their properties and the future improvement of the oil bases, oil based stock production, uses and additives are discussed. (Author).

  16. Health promoting compounds in vegetables and fruits:

    DEFF Research Database (Denmark)

    Brandt, K.; Christensen, L.P.; Hansen-Møller, J.;

    2004-01-01

    Vegetables contain unknown compounds with important health promoting effect. The described project defined and tested a two-step screening procedure for identification of such compounds. Step 1 is initial screening according to three criteria: 1.1, chemically reactive functional groups; 1.2, toxi...

  17. Cruciferous vegetables: dietary phytochemicals for cancer prevention.

    Science.gov (United States)

    Abdull Razis, Ahmad Faizal; Noor, Noramaliza Mohd

    2013-01-01

    Relationships between diet and health have attracted attention for centuries; but links between diet and cancer have been a focus only in recent decades. The consumption of diet-containing carcinogens, including polycyclic aromatic hydrocarbons and heterocyclic amines is most closely correlated with increasing cancer risk. Epidemiological evidence strongly suggests that consumption of dietary phytochemicals found in vegetables and fruit can decrease cancer incidence. Among the various vegetables, broccoli and other cruciferous species appear most closely associated with reduced cancer risk in organs such as the colorectum, lung, prostate and breast. The protecting effects against cancer risk have been attributed, at least partly, due to their comparatively high amounts of glucosinolates, which differentiate them from other vegetables. Glucosinolates, a class of sulphur- containing glycosides, present at substantial amounts in cruciferous vegetables, and their breakdown products such as the isothiocyanates, are believed to be responsible for their health benefits. However, the underlying mechanisms responsible for the chemopreventive effect of these compounds are likely to be manifold, possibly concerning very complex interactions, and thus difficult to fully understand. Therefore, this article provides a brief overview about the mechanism of such compounds involved in modulation of carcinogen metabolising enzyme systems.

  18. Weeds as important vegetables for farmers

    NARCIS (Netherlands)

    Cruz Garcia, G.S.; Price, L.L.

    2012-01-01

    The objective of this study was to investigate the multiple uses and cognitive importance of edible weeds in Northeast Thailand. Research methods included focus group discussions and freelistings. A total of 43 weeds consumed as vegetable were reported, including economic, naturalized, agricultural

  19. High pressure effects on fruits and vegetables

    NARCIS (Netherlands)

    Timmermans, R.A.H.; Matser, A.M.

    2016-01-01

    The chapter provides an overview on different high pressure based treatments (high pressure pasteurization, blanching, pressure-assisted thermal processing, pressure-shift freezing and thawing) available for the preservation of fruits and vegetable products and extending their shelf life. Pressure t

  20. Building the United States National Vegetation Classification

    Science.gov (United States)

    Franklin, S.B.; Faber-Langendoen, D.; Jennings, M.; Keeler-Wolf, T.; Loucks, O.; Peet, R.; Roberts, D.; McKerrow, A.

    2012-01-01

    The Federal Geographic Data Committee (FGDC) Vegetation Subcommittee, the Ecological Society of America Panel on Vegetation Classification, and NatureServe have worked together to develop the United States National Vegetation Classification (USNVC). The current standard was accepted in 2008 and fosters consistency across Federal agencies and non-federal partners for the description of each vegetation concept and its hierarchical classification. The USNVC is structured as a dynamic standard, where changes to types at any level may be proposed at any time as new information comes in. But, because much information already exists from previous work, the NVC partners first established methods for screening existing types to determine their acceptability with respect to the 2008 standard. Current efforts include a screening process to assign confidence to Association and Group level descriptions, and a review of the upper three levels of the classification. For the upper levels especially, the expectation is that the review process includes international scientists. Immediate future efforts include the review of remaining levels and the development of a proposal review process.

  1. 30 CFR 779.19 - Vegetation information.

    Science.gov (United States)

    2010-07-01

    ... important habitat for fish and wildlife for those species of fish and wildlife identified under 30 CFR 780... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Vegetation information. 779.19 Section 779.19... SURFACE MINING PERMIT APPLICATIONS-MINIMUM REQUIREMENTS FOR INFORMATION ON ENVIRONMENTAL RESOURCES §...

  2. 30 CFR 783.19 - Vegetation information.

    Science.gov (United States)

    2010-07-01

    ... identified under 30 CFR 784.21. ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Vegetation information. 783.19 Section 783.19... UNDERGROUND MINING PERMIT APPLICATIONS-MINIMUM REQUIREMENTS FOR INFORMATION ON ENVIRONMENTAL RESOURCES §...

  3. Vegetable oils and protection of plants

    Energy Technology Data Exchange (ETDEWEB)

    Charlemagne, D. [Societe Robbe, 60 - Compiegne (France)

    1995-09-01

    Vegetable oils are biodegradable, inoffensive for environment and people and flammable. They have a lot of assets to be marketed as additives for weed killers, insecticides and rat-killing. They can be used too as pulverization vectors in insecticides treatments. (O.L.).

  4. 1976 Commercial Vegetable Pest Control Guide.

    Science.gov (United States)

    MacNab, A. A.; And Others

    This guide contains pest control information for commercial vegetable production. It was prepared for agricultural supply dealers, extension agents, fieldmen, and growers. It gives general precautions, information on seed treatment, growing disease-free seedlings and transplants, general soil insect control, general weed control, and spraying…

  5. Microwave dielectric behavior of vegetation material

    Science.gov (United States)

    Elrayes, Mohamed A.; Ulaby, Fawwaz T.

    1987-01-01

    The microwave dielectric behavior of vegetation was examined through the development of theoretical models involving dielectric dispersion by both bound and free water and supported by extensive dielectric measurements conducted over a wide range of conditions. The experimental data were acquired using an open-ended coaxial probe that was developed for sensing the dielectric constant of thin layers of materials, such as leaves, from measurements of the complex reflection coefficient using a network analyzer. The probe system was successfully used to record the spectral variation of the dielectric constant over a wide frequency range extending from 0.5 to 20.4 GHz at numerous temperatures between -40 to +40 C. The vegetation samples were measured over a wide range of moisture conditions. To model the dielectric spectrum of the bound water component of the water included in vegetation, dielectric measurements were made for several sucrose-water solutions as analogs for the situation in vegetation. The results were used in conjunction with the experimental data for leaves to determine some of the constant coefficients in the theoretical models. Two models, both of which provide good fit to the data, are proposed.

  6. Green vegetable supply in Dar es Salaam

    NARCIS (Netherlands)

    Wegerif, M.C.A.

    2015-01-01

    This article constructs a picture of green vegetable growing and supply in Dar es Salaam by looking at the lives and work of a small trader and an urban farmer. It reveals the importance of a range of distribution and trade networks and the integration of a wider city region, alongside urban and per

  7. Vermicomposting of Vegetable Wastes Using Cow Dung

    Directory of Open Access Journals (Sweden)

    K. Muthukumaravel

    2008-01-01

    Full Text Available Municipal solid wastes are mainly from domestic and commercial areas containing recyclable toxic substances, compostable organic matter and others. With rapid increase in population, the generation of municipal solid wastes has increased several folds during last few years. Disposal of solid wastes can be done by methods like land filling, incineration, recycling, conversion into biogas, disposal into sea and composting. Vermicomposting is one of the recycling technologies which will improve the quality of the products. The present study aims to find out the possibility of utilization of vegetable wastes for vermiculture. Earthworm Megascolex mauritii cultured in plastic trays (45 x 30 x 30 cm containing soil alone (control (T1, soil + cow dung (T2, soil + vegetable waste (T3 and soil + vegetable waste + cow dung (T4 for 60 days. Nutrient values were determined from the compost and compared with that of the control. From these results, it was found that NPK values were maximum in compost obtained from vegetable waste with the use of cow dung.

  8. Multispectral imaging of wok fried vegetables

    DEFF Research Database (Denmark)

    Løje, Hanne; Dissing, Bjørn Skovlund; Clemmensen, Line Katrine Harder;

    2011-01-01

    This paper shows how multispectral images can be used to assess color change over time in wok fried vegetables. We present results where feature selection was performed with sparse methods from the multispectral images to detect the color changes of wok fried carrots and celeriac stored at +5°C...

  9. 40 CFR 230.43 - Vegetated shallows.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Vegetated shallows. 230.43 Section 230.43 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) OCEAN DUMPING SECTION 404(b)(1) GUIDELINES FOR SPECIFICATION OF DISPOSAL SITES FOR DREDGED OR FILL MATERIAL Potential Impacts...

  10. Atlas of the potential vegetation of Ethiopia

    DEFF Research Database (Denmark)

    Friis, Ib; Demissew, Sebsebe; van Breugel, Paulo

    recognised, and the descriptions are illustrated with selected photographs from many parts of Ethiopia. Parts of the book is an atlas with 29 map plates and a legend to signatures. This atlas shows the potential distribution of the 15 natural vegetation types. The book also describes the relation between...

  11. Reduced-dimension clustering for vegetation segmentation

    NARCIS (Netherlands)

    Steward, B.L.; Tian, L.F.; Nettleton, D.; Tang, L.

    2004-01-01

    Segmentation of vegetation is a critical step in using machine vision for field automation tasks. A new method called reduced-dimensionclustering (RDC) was developed based on theoretical considerations about the color distribution of field images. RDC performed unsupervised classification of pixels

  12. SUBMERGED AQUATIC VEGETATION GARDENING MX974861

    Science.gov (United States)

    The Submerged Aquatic Vegetation Gardening project will acquire the seed/seedlings of SAVs for planting, will create an SAV gardening guide; and will create SAV plots at volunteers waterfront properties. Volunteers will gather data on plant size and spacing. Water quality test ...

  13. How vegetation reinforces soil on slopes

    NARCIS (Netherlands)

    A. Stokes; J.E. Norris; L.P.H. van Beek; T. Bogaard; E. Cammeraat; S.B. Mickovski; A. Jenner; A. Di Iorio; T. Fourcaud

    2008-01-01

    Once the instability process e.g. erosion or landslides has been identified on a slope, the type of vegetation to best reinforce the soil can then be determined. Plants improve slope stability through changes in mechanical and hydrological properties of the root-soil matrix. The architecture of a pl

  14. Rapid vegetative propagation method for carob

    Science.gov (United States)

    Many fruit species are propagated by vegetative methods such as budding, grafting, cutting, suckering, layering etc. to avoid heterozygosity. Carob trees (Ceratonia siliqua L.) are of highly economical value and it is among the most difficult-to-propagate fruit species. In this study, air-layering p...

  15. Toward a comprehensive landscape vegetation monitoring framework

    Science.gov (United States)

    Kennedy, Robert; Hughes, Joseph; Neeti, Neeti; Larrue, Tara; Gregory, Matthew; Roberts, Heather; Ohmann, Janet; Kane, Van; Kane, Jonathan; Hooper, Sam; Nelson, Peder; Cohen, Warren; Yang, Zhiqiang

    2016-04-01

    Blossoming Earth observation resources provide great opportunity to better understand land vegetation dynamics, but also require new techniques and frameworks to exploit their potential. Here, I describe several parallel projects that leverage time-series Landsat imagery to describe vegetation dynamics at regional and continental scales. At the core of these projects are the LandTrendr algorithms, which distill time-series earth observation data into periods of consistent long or short-duration dynamics. In one approach, we built an integrated, empirical framework to blend these algorithmically-processed time-series data with field data and lidar data to ascribe yearly change in forest biomass across the US states of Washington, Oregon, and California. In a separate project, we expanded from forest-only monitoring to full landscape land cover monitoring over the same regional scale, including both categorical class labels and continuous-field estimates. In these and other projects, we apply machine-learning approaches to ascribe all changes in vegetation to driving processes such as harvest, fire, urbanization, etc., allowing full description of both disturbance and recovery processes and drivers. Finally, we are moving toward extension of these same techniques to continental and eventually global scales using Google Earth Engine. Taken together, these approaches provide one framework for describing and understanding processes of change in vegetation communities at broad scales.

  16. Variation of MODIS reflectance and vegetation indices with viewing geometry and soybean development

    Directory of Open Access Journals (Sweden)

    Fábio M. Breunig

    2012-06-01

    Full Text Available Directional effects introduce a variability in reflectance and vegetation index determination, especially when large field-of-view sensors are used (e.g., Moderate Resolution Imaging Spectroradiometer - MODIS. In this study, we evaluated directional effects on MODIS reflectance and four vegetation indices (Normalized Difference Vegetation Index - NDVI; Enhanced Vegetation Index - EVI; Normalized Difference Water Index - NDWI1640 and NDWI2120 with the soybean development in two growing seasons (2004-2005 and 2005-2006. To keep the reproductive stage for a given cultivar as a constant factor while varying viewing geometry, pairs of images obtained in close dates and opposite view angles were analyzed. By using a non-parametric statistics with bootstrapping and by normalizing these indices for angular differences among viewing directions, their sensitivities to directional effects were studied. Results showed that the variation in MODIS reflectance between consecutive phenological stages was generally smaller than that resultant from viewing geometry for closed canopies. The contrary was observed for incomplete canopies. The reflectance of the first seven MODIS bands was higher in the backscattering. Except for the EVI, the other vegetation indices had larger values in the forward scattering direction. Directional effects decreased with canopy closure. The NDVI was lesser affected by directional effects than the other indices, presenting the smallest differences between viewing directions for fixed phenological stages.Efeitos direcionais introduzem variabilidade na reflectância e na determinação de índices de vegetação, especialmente quando sensores de amplo campo de visada são usados (p.ex., Moderate Resolution Imaging Spectroradiometer - MODIS. Neste estudo, nós avaliamos os efeitos direcionais sobre a reflectância e quatro índices de vegetação (Normalized Difference Vegetation Index - NDVI; Enhanced Vegetation Index - EVI; Normalized

  17. Mineral Element Concentrations in Vegetables Cultivated in Acidic Compared to Alkaline Areas of South Sweden

    Directory of Open Access Journals (Sweden)

    Ingegerd Rosborg

    2009-01-01

    Full Text Available A study in 1997, on mineral levels in acidic compared to alkaline well waters, and in women’s hair, revealed higher concentrations of a number of mineral elements like Ca, Mo and Se in alkaline waters and hair. Thus, median Ca levels were six times higher in well water and five times higher in hair from the alkaline area compared to the acidic area. This finding raised the probability of similar differences in vegetables from these areas. Thus, in the year 2006, 60 women who had participated in the study in 1997 were asked to cultivate parsley, lettuce, carrot and chive. During the spring of 2006, the women from the water and hair study of 1997, 30 of them from the acidic area and 30 women from the alkaline district cultivated vegetables: carrot (Daucus carota L, parsley (Petroselinum crispum, chive (Allium schoenoprasum and lettuce (Eruca sativa. The vegetables were harvested, and rinsed in tap water from the kitchens of the participating women in August. The concentrations of about 35 elements and ions were determined by ICP OES and ICP-MS predominantly. In addition, soil samples from the different cultivators were also analyzed for a number of elements. Lettuce and parsley showed the highest concentrations of mineral elements per gram dry weight. Only Mo concentrations were significantly higher in all the different vegetables from the alkaline district compared to vegetables from the acidic areas. On the other hand, the concentrations of Ba, Br, Mn, Rb and Zn were higher in all the different vegetables from the acidic area. In the soil, only pH and exchangeable Ca from the alkaline area were higher than from the acidic area, while exchangeable Fe, Mn and Na concentrations were higher in soils from the acidic area. Soil elements like Al, Fe, Li, Ni, Pb, Si, Ti, V, Zn and Zr were found in higher concentrations in lettuce and parsley, which were attributed to soil particles being splashed on the plants by the rain and absorbed by the leaves

  18. Studies on NaXe Clusters

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The chemical shift of 23Na in excimer NaXe was measured by using nuclear magnetic resonance (NMR) spectra, which is in good agreement with the theoretical value obtained by ab initio calculations. The bond length, dissociation energy, dipole of NaXe and Mulliken charges at Na and Xe in NaXe were calculated, respectively. The spectra of ultraviolet (UV) fluorescence and surface-enhanced Raman scattering of NaXe were also measured.

  19. Effects of vegetation structure on biomass accumulation in a Balanced Optimality Structure Vegetation Model (BOSVM v1.0

    Directory of Open Access Journals (Sweden)

    Z. Yin

    2013-09-01

    Full Text Available A myriad of interactions exist between vegetation and local climate for arid and semi-arid regions. Vegetation function, structure and individual behavior have large impacts on carbon-water-energy balances, which consequently influence local climate variability that, in turn, feeds back to the vegetation. In this study, a conceptual vegetation structure scheme is formulated and tested in a new carbon-water-energy coupled model to explore the importance of vegetation structure and vegetation adaptation to water stress on equilibrium biomass states. Surface energy, water and carbon fluxes are simulated for a range of vegetation structures across a precipitation gradient in West Africa and optimal vegetation structures that maximizes biomass for each precipitation regime are determined. Two different strategies of vegetation adaptation to water stress are included. Under dry conditions vegetation tries to maximize the Water Use Efficiency and Leaf Area Index as it tries to maximize carbon gain. However, an important negative feedback mechanism is found as the vegetation also tries to minimize its cover to optimize the surrounding bare ground area from which water can be extracted, thereby forming patches of vertical vegetation. Under larger precipitation, a positive feedback mechanism is found in which vegetation tries to maximize its cover as it then can reduce water loss from bare soil while having maximum carbon gain due to a large Leaf Area Index. The competition between vegetation and bare soil determines a transition between a "survival" state to a "growing" state.

  20. Araneofauna captured in the forest and adjacent area, in the north of Paraná, Brazil Araneofauna capturada na mata e área aberta adjacente, no norte do Paraná, Brasil

    Directory of Open Access Journals (Sweden)

    Lizandra Lucy Catelli

    2008-10-01

    Full Text Available Arachnids make up an exclusive predator group. Eating habit makes the arthropods to move around in search for hunting or building traps with silk threads. In order to know the araneofauna of the Godoy’s Forest State Park, pitfall-like traps were installed inside the forest, edge and adjacent area predominantly grassy. Collections were carried out fortnightly, in the period of a year, separating what was collected during the day and during the night. One hundred and twenty-one individuals were collected, belonging to 18 families where Lycosidae and Theridiidae were the most abundant, although Lyniphiidae family has prevailed in the forest area. Young individuals prevailed. It is concluded that the highest frequency and abundance of young individuals may be directly related to its dispersal and spiders belonging to the Lycosidae, Zoridae and Theridiidae families, being able to be used as bioindicators. Os aracnídeos compõem um grupo exclusivamente predador. O hábito alimentar faz com que o artropoda locomova-se em busca da caça ou construa armadilhas com fios de seda. Buscando conhecer a araneofauna do Parque Estadual Mata dos Godoy, foram instaladas armadilhas tipo ptiffal dentro da mata, borda e área adjacente, com vegetação predominantemente formada por gramíneas. As coletas eram realizadas quinzenalmente, no período de um ano, separando o coletado em diurno e noturno. Foram coletados 121 indivíduos, pertencentes a 18 famílias, das quais as famílias Lycosidae e Theridiidae foram as mais abundantes, embora a família Lyniphiidae tenha predominado na área de mata. Houve maior freqüência de indivíduos jovens. Conclui-se que a maior freqüência e abundância de indivíduos jovens pode estar diretamente relacionada a sua dispersão e, além disso, as aranhas pertencentes as famílias Lycosidae, Zoridae e Theridiidae, podem ser utilizadas como bioindicadores.

  1. Semi-Dried Fruits and Vegetables

    Directory of Open Access Journals (Sweden)

    Gamze Uysal Seçkin

    2015-12-01

    Full Text Available Since ancient times, the preservation of fruit and vegetables is an ancient method of drying. Sun drying method has been used more widely. In general, consumer-ready products are dried fruits, while the dried vegetables are the foods subjected to the rehydration processes such as boiling, heating and baking before consumption. In recent years, new products with high eating quality have been attempted to achieve without losing characteristic of raw material. With the improving of food technology, using developed methods (pH reduction with reducing aw, slight heating, preservatives use etc. as protective agent, and using a combination of a low rate as an alternative to traditional food preservation process, products have been obtained without changing original characteristics of food. ‘Semi-dried 'or 'medium moist 'products with little difference between the taste and texture of the product with a damp have gained importance in recent years in terms of consumer preferences. Vegetables or fruits, which have water activity levels between 0.50 and 0.95 and the moisture content of between 26% and 60%, are called 'medium moist fruit or vegetables'. Two different manufacturing process to obtain a semi-dried or intermediate moisture products are applied. First, fully dried fruits and vegetables to be rehydrated with water are brought to the desired level of their moisture content. Second, in the first drying process, when the product moisture content is reduced to the desired level, the drying process is finished. The semi-dried products are preferred by consumers because they have a softer texture in terms of eating quality and like fresh products texture.

  2. Results from NA61/SHINE

    Directory of Open Access Journals (Sweden)

    Unger M.

    2013-06-01

    Full Text Available In this paper we summarize recent results from NA61/SHINE relevant for heavy ion physics, neutrino oscillations and the interpretation of air showers induced by ultra-high energy cosmic rays.

  3. Na via do Behemoth

    Directory of Open Access Journals (Sweden)

    Gérard Rabinovitch

    2008-06-01

    Full Text Available O momento nazista permanece um enigma impensado de que a cultura contemporânea continua cativa. O autor levanta a hipótese de que a persistência desse enigma e seus estragos duráveis se devem à insistência dos pensamentos político, sociológico e filosófico em construírem o nazismo à luz da metáfora hobbesiana do Leviatã. Propõe retomar a questão do nazismo sob a perspectiva do Behemoth, antônimo do Leviatã. Para tanto, sugere a necessidade de retornar a Freud e à psicanálise, balizas de um possível novo pensamento do político que escrutine a destrutividade nazista. Propõe ainda sondar as homologias entre nazismo, corjas e máfias, com base na figura da " heroicização da violência" que lhes seria comum. E avança um modelo " econômico" : a quimera, suscetível de capturar o caráter heterotópico e heterocrônico de sua construção criminosa.The paths of Behemoth. The Nazi moment remains as the thoughtless enigma of which contemporary culture is still captive. The author raises the hypothesis where the persistency of this enigma and its durable damages are due to the insistence of the political, social and philosophical thoughts in building the Nazism at the view of the Hobbesian metaphor of Leviathan. It is here proposed to resume the Nazism matter under Behemoth's perspective, antonym to Leviathan. For such, it is suggested a necessity to look back at Freud and the psychoanalysis, structured by a possible new political thought which scrutinizes the destructivity of the Nazism. It is also here proposed to gaze at the homologies between Nazism, mafias and gangs, with a base in the figure of " violence as a heroically act" that are their common ground. The author also advances an economical model: the chimera susceptible to capture the heterotopic and heterochronic character of its criminal construction.

  4. Spatial Vegetation Data for Capitol Reef National Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This polygon feature class represents vegetation communities mapped at Capitol Reef National Park to an alliance or association level, depending on the photo...

  5. Landsat-facilitated vegetation map and vegetation reconnaissance of Tetlin National Wildlife Refuge, Alaska

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — A Landsat assisted vegetation map was prepared for Tetlin National Wildlife Refuge (925,000 acres). The refuge lies within the northern boreal subzone of eastern...

  6. Pu`ukohola Heiau National Historic Site Vegetation Mapping Project - Spatial Vegetation Data

    Data.gov (United States)

    National Park Service, Department of the Interior — This metadata is for the vegetation and land-use geo-spatial database for Pu'ukohola Heiau National Historic Site (PUHE) , Island of Hawai'i and surrounding areas....

  7. Spatial Vegetation Data for Florissant Fossil Beds National Monument Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The vegetation units on this map were determined through the stereoscopic interpretation of aerial photographs supported by field sampling and ecological analysis....

  8. Spatial Vegetation Data for Bent's Old Fort National Historic Site Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — High resolution vegetation polygons mapped by the National Park Service. A total of 800 acres (324 ha) were mapped. Thirteen map classes were used to describe the...

  9. Spatial Vegetation Data for Apostle Islands National Lakeshore Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The geographic information system (GIS) format spatial data set of vegetation for Apostle Islands National Lakeshore (APIS) was created for the National Park...

  10. Spatial Vegetation Data for Fredericksburg and Spotsylvania National Military Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This shapefile is an vegetation map of Fredericksburg and Spotsylvania National Military Park, Virginia. It was developed by The Virginia Department of Conservation...

  11. Investigation on the Patterns of Global Vegetation Change Using a Satellite-Sensed Vegetation Index

    Directory of Open Access Journals (Sweden)

    Ainong Li

    2010-06-01

    Full Text Available The pattern of vegetation change in response to global change still remains a controversial issue. A Normalized Difference Vegetation Index (NDVI dataset compiled by the Global Inventory Modeling and Mapping Studies (GIMMS was used for analysis. For the period 1982–2006, GIMMS-NDVI analysis indicated that monthly NDVI changes show homogenous trends in middle and high latitude areas in the northern hemisphere and within, or near, the Tropic of Cancer and Capricorn; with obvious spatio-temporal heterogeneity on a global scale over the past two decades. The former areas featured increasing vegetation activity during growth seasons, and the latter areas experienced an even greater amplitude in places where precipitation is adequate. The discussion suggests that one should be cautious of using the NDVI time-series to analyze local vegetation dynamics because of its coarse resolution and uncertainties.

  12. Spatial Vegetation Data for Appomattox Court House National Historical Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This shapefile is an vegetation map of Appomattox Court House National Historical Park, Virginia. It was developed by The Virginia Department of Conservation and...

  13. Spatial Vegetation Data for Saugus Iron Works National Historic Site Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This shapefile is an association-level vegetation map of Saugus Iron Works National Historic Site developed by NatureServe for the National Park Service. The map is...

  14. Spatial Vegetation Data for Richmond National Battlefield Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This shapefile is an vegetation map of Richmond National Battlefield Park, Virginia. It was developed by The Virginia Department of Conservation and Recreation,...

  15. Spatial Vegetation Data for San Antonio Missions National Historical Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This metadata is for the vegetation and land-use geo-spatial database for San Antonio Missions National Historical Park (SAAN) and surrounding areas. This project...

  16. Spatial Vegetation Data for Lyndon B. Johnson National Historical Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — his metadata is for the vegetation and land-use geo-spatial database for Lydon B. Johnson National Historical Site and surrounding areas. This project is authorized...

  17. Spatial Vegetation Data for Fossil Butte National Monument Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This polygon feature class represents vegetation communities mapped at Fossil Butte National Monument. The polygons were generated using guidelines set by the...

  18. Spatial Vegetation Data for Walnut Canyon National Monument Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This metadata is for the vegetation and land-use geo-spatial database for Walnut Canyon National Monument and surrounding areas. The project is authorized as part...

  19. Spatial Vegetation Data for Pipe Spring National Monument Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This polygon feature class represents vegetation communities mapped at Pipe Spring National Monument. The polygons were delineated using guidelines set by the...

  20. Spatial Vegetation Data for Booker T. Washington National Monument Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — This shapefile is an vegetation map of Booker T. Washington National Monument, Virginia. It was developed by The Virginia Department of Conservation and Recreation,...