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Sample records for bryophyta

  1. CLADISTIC ANALYSIS OF THE FAMILY CRYPHAEACEAE (BRYOPHYTA WITH EMPHASIS ON CRYPHAEA: A STUDY BASED ON A COMPREHENSIVE MORPHOLOGICAL DATASET

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    Jorge R. Flores

    2017-01-01

    Full Text Available El primer análisis filogenético de Cryphaeaceae (Bryophyta, una familia de musgos pleurocárpicos, se lleva a cabo sobre la base de caracteres morfológicos. El conjunto de datos consta de 73 caracteres: 10 continuos y 63 discretos. El muestreo de taxa incluye 9 géneros y 46 especies de Cryphaeaceae, 32 especies pertenecientes a Cryphaea. El grupo externo, incluye 23 especies de 21 géneros y 13 familias de musgos pleurocarpous. Los análisis filogenéticos se realizaron utilizando parsimonia bajo pesos implicados. Los resultados no apoyan la monofilia de Cryphaeaceae ya que excluye a Dendroalsia abietina de la familia. El clado compuesto por los géneros restantes (clado A fue diagnosticado por una seta corta (0,26-0,30 mm, costa presente en todas las hojas periqueciales internas, opérculo cónico y hojas adpresas al estado seco. Los análisis además recuperaron Cryphaea como parafilético y Dendrocryphaea como polifilético. Cryphaea incluye Schoenobryum concavifolium, Cyptodontopsis leveillei, y Dendrocryphaea lamyana que se separaron de las otras especies de Dendrocryphaea. El mapeo de caracteres reveló que, como consecuencia de la ubicación inesperada de especies cruciales, la diagnosis debería ser considerablemente modificada.

  2. Flora Malesiana, Series III: Bryophyta

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    Wijk, van der R.

    1951-01-01

    Scope, organization, and purpose of Series III, Flora Malesiana (Musci and Hepaticae) are explained. Collaboration is asked on the following points: (a) To collect Mosses and Hepaticae in Malaysia and to add extensive and detailed data to the specimens (directions available on application to the

  3. Diversidade, taxonomia e distribuição por estados brasileiros das famílias Bartramiaceae, Brachytheciaceae, Bryaceae, Calymperaceae, Fissidentaceae, Hypnaceae e Leucobryaceae (Bryophyta da Estação Científica Ferreira Penna, Caxiuanã, Pará, Brasil Diversity, taxonomy and distribution for brazilian states of the families Bartramiaceae, Brachytheciaceae, Bryaceae, Calymperaceae, Fissidentaceae, Hypnaceae and Leucobryaceae (Bryophyta of the Scientific Station Ferreira Penna, Caxiuanã, Pará, Brazil

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    Eryka de Nazaré Rezende Moraes

    2009-01-01

    Full Text Available Foi realizado o inventário das espécies de musgos (Bryophyta da Estação Científica Ferreira Penna, município de Melgaço, estado do Pará. Esta estação possui 85% de sua área ocupada por mata de terra firme, bem conservada. Sua vegetação de fanerógamas já está relativamente estudada. Porém o estudo dos musgos está avançando agora com este trabalho. Além de inventariar as espécies de musgos ocorrentes na área, outros objetivos são ampliar a distribuição geográfica das espécies ainda não referidas para a região, registrar o tipo de substrato e ecossistema onde elas ocorrem. Foram identificadas 84 espécies, 37 gêneros e 19 famílias. Esse trabalho é parte dos estudos realizados com os musgos da ECFPn, tratando apenas das 47 espécies pertencentes às famílias Bartramiaceae, Brachytheciaceae, Bryaceae, Calymperaceae, Fissidentaceae, Hypnaceae e Leucobryaceae. Para cada táxon foram citados, herbário, referências de descrições, comentários com as características diagnósticas, habitats, distribuição geográfica brasileira e material examinado. São novas referências para Amazônia Brasileira, Fissidens pauperculus M. Howe e Octoblepharum costatum H. A.Crum e para o estado do Pará, Syrrhopodon incompletus Schwägr. var. berteroanus (Brid. W. D. Reese e Leucobryum crispum Müll. Hal.The inventory of the species of mosses (Bryophyta was conducted in the Scientific Station Ferreira Penna, municipality of Melgaço, state of Pará. This station possesses 85% of its area of well conserved, terra-firme vegetation. Although the phanerogams are relatively well studied, the mosses are only now moving forward with this work. Besides inventorying the species of mosses inhabiting the area, other objectives are to expand knowledge regarding the geographical distribution of the species reported for the area, and to register the substratum type and ecosystem where they occur. There were identified 84 species, 37 genera and 19

  4. The Erpodiaceae (Bryophyta: Isobryales of India

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    A.E.D. Daniels

    2012-06-01

    Full Text Available Three genera, viz., Aulacopilum, Erpodium and Solmsiella are recognized in the moss family Erpodiaceae. Aulacopilum and Erpodium have 2 species each while Solmsiella has only one. Aulacopilum beccarii and Erpodium glaziovii are added to the moss flora of Asia, and South and Southeast Asia respectively. Aulacopilum glaucum is added to the moss flora of India. The name Aulacopilum beccarii is resuscitated. The genera and species are keyed out. Apart from a detailed description and information on habitat, each species is illustrated and its distribution is mapped.

  5. The Moss (Bryophyta Flora of Karasu District (Sakarya/Turkey

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    Gamze GÜRSU

    2017-11-01

    Full Text Available In this study, 180 moss specimens collected from the Karasu (Sakarya district, were identified and a total of 36 taxa belonging to 12 families and 24 genera were determined. While, Pottiaceae is the richest family in terms of the number of taxa (11-%30,5, Brachytheciaceae has the second order (7 -%19,4 and Polytrichaceae has the third order (4-%11,3.

  6. Chemical and structural characterization of copper adsorbed on mosses (Bryophyta)

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    González, Aridane G., E-mail: aridaneglez@gmail.com [GET (Géosciences Environnement Toulouse) UMR 5563CNRS, 14 Avenue Edouard Belin, F-31400 Toulouse (France); Jimenez-Villacorta, Felix [Instituto de Ciencia de Materiales Madrid, CSIC, Cantoblanco, E-28049 Madrid (Spain); Beike, Anna K. [Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestrasse 1, 79104 Freiburg (Germany); State Museum of Natural History Stuttgart, Rosenstein 1, 70191 Stuttgart (Germany); Reski, Ralf [Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestrasse 1, 79104 Freiburg (Germany); BIOSS—Centre for Biological Signalling Studies, 79104 Freiburg (Germany); FRIAS—Freiburg Institute for Advanced Studies, 79104 Freiburg (Germany); Adamo, Paola [Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055 Naples (Italy); Pokrovsky, Oleg S. [GET (Géosciences Environnement Toulouse) UMR 5563CNRS, 14 Avenue Edouard Belin, F-31400 Toulouse (France); BIO-GEO-CLIM Laboratory, Tomsk State University, Tomsk (Russian Federation); Institute of Ecological Problems of the North, Russian Academy of Science, Arkhangelsk (Russian Federation)

    2016-05-05

    Highlights: • Cu{sup 2+} was adsorbed on four mosses used in moss-bag pollution monitoring technique. • Thermodynamic approach was used to model Cu speciation based on XAS results. • All studied mosses have ∼4.5 O/N atoms at ∼1.95 Å around Cu likely in a pseudo-square geometry. • Cu(II)-carboxylates and Cu(II)-phosphoryls are the main moss surface binding groups. • Moss growing in batch reactor yielded ∼20% of Cu(I) in the form of Cu–S(CN) complexes. - Abstract: The adsorption of copper on passive biomonitors (devitalized mosses Hypnum sp., Sphagnum denticulatum, Pseudoscleropodium purum and Brachythecium rutabulum) was studied under different experimental conditions such as a function of pH and Cu concentration in solution. Cu assimilation by living Physcomitrella patents was also investigated. Molecular structure of surface adsorbed and incorporated Cu was studied by X-ray Absorption Spectroscopy (XAS). Devitalized mosses exhibited the universal adsorption pattern of Cu as a function of pH, with a total binding sites number 0.05–0.06 mmolg{sub dry}{sup −1} and a maximal adsorption capacity of 0.93–1.25 mmolg{sub dry}{sup −1} for these devitalized species. The Extended X-ray Absorption Fine Structure (EXAFS) fit of the first neighbor demonstrated that for all studied mosses there are ∼4.5 O/N atoms around Cu at ∼1.95 Å likely in a pseudo-square geometry. The X-ray Absorption Near Edge Structure (XANES) analysis demonstrated that Cu(II)-cellulose (representing carboxylate groups) and Cu(II)-phosphate are the main moss surface binding moieties, and the percentage of these sites varies as a function of solution pH. P. patens exposed during one month to Cu{sup 2+} yielded ∼20% of Cu(I) in the form of Cu–S(CN) complexes, suggesting metabolically-controlled reduction of adsorbed and assimilated Cu{sup 2+}.

  7. Musgos (Bryophyta na Ilha Trambioca, Barcarena, PA, Brasil Mosses (Bryophyta in Trambioca Island, Barcarena, Pará State, Brazil

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    Adriana Paula da Silva Souza

    2005-09-01

    Full Text Available Foi realizado o inventário dos musgos em diferentes ecossistemas da Ilha Trambioca, município de Barcarena, PA. Foram encontradas 40 espécies, pertencentes a 20 gêneros e 13 famílias. As famílias com maior número de espécies foram Calymperaceae (12 spp., Sematophyllaceae (6 spp. e Leucobryaceae (5 spp., as quais destacaram-se também quanto ao número de indivíduos. As espécies mais comuns foram Sematophyllum subsimplex (Hedw. Mitt, Calymperes erosum Müll. Hal., Pilosium chlorophyllum (Hornsch. Müll. Hal., Taxithelium planum (Brid. Mitt., Callicostella pallida (Hornsch. Årgstr. e Trichosteleum papillosum (Hornsch. A. Jaeger. Evidenciou-se maior diversidade de espécies na mata de terra firme, confirmando a preferência das briófitas por este ecossistema. Philonotis gracillima Ångstr. é citada como primeira referência para o Estado do Pará.This work presents a survey of mosses from different ecosystems of Trambioca Island, municipality of Barcarena, Pará State, Brazil. Forty taxa of mosses were found, belonging to 20 genera and 13 families. The families with highest number of species were Calymperaceae (12 spp., Sematophyllaceae (6 spp., and Leucobryaceae (5 spp., which also presented the highest number of individuals. The most common species were Sematophyllum subsimplex (Hedw. Mitt, Calymperes erosum Müll. Hal., Pilosium chlorophyllum (Hornsch. Müll. Hal., Callicostella pallida (Hornsch. Årgstr., and Trichosteleum papillosum (Honrsch. A. Jaeger. It was observed a higher richness of species in the primary low land rainforest, confirming the preference of bryophytes for this ecosystem. Philonotis gracillima Ångstr. is mentioned as the first report to Pará State.

  8. Helicophyllaceae (Bryophyta, nova ocorrência para o Estado do Pará, Brasil Helicophyllaceae (Bryophyta, a new record to Pará State, Brazil

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    Regina C. L. Lisboa

    2005-09-01

    Full Text Available Helicophyllaceae, família monotípica neotropical, é registrada pela primeira vez no Estado do Pará. Sua única espécie, Helicophyllum torquatum (Hook. Brid., registrada anteriormente no Estado do Amazonas e que recentemente havia sido excluída da lista de musgos amazônicos, é apresentada como nova ocorrência para toda a Amazônia brasileira.Helicophyllaceae, a monotypic family of Neotropics, is presented for the Pará State. Helicophyllum torquatum (Hook. Brid., the single species, was recorded for the Amazonas State, but recently was excluded of checklist of Amazonian mosses. H. torquatum is considered a new report for all Brazilian Amazônia.

  9. CONTRIBUTIONS TO THE MOSS FLORA OF URUGUAY: THE GENUS POHLIA (BRYOPHYTA, BRYALES, A NEW RECORD

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    Guillermo M. Suárez

    2013-01-01

    Full Text Available El género Pohlia se presenta como un nuevo registro para Uruguay, donde está representado por dos especies: P. wahlenbergii y P. humilis (=P. tenuifolia. Pohlia humilis también se registra por primera vez para Colombia. Se propone a P. loriformis, una especie poco conocida descrita para Bolivia, como un nuevo sinónimo de P. humilis. Se designan lectotipos para P. loriformis y Mielichhoferia brachycarpa. Se presenta una clave para las especies de Pohlia de Uruguay y se indican, para P. humilis, los sinónimos de América del Sur, comentarios breves, su distribución e ilustraciones.

  10. Noteworthy habitat and phylogeny updates for eastern US Ulota (Orthotrichaceae, Bryophyta).

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    Tessler, Michael; Cunningham, Seth W; Clark, Theresa A

    2017-09-01

    The moss Ulota crispa is ubiquitous as an obligate epiphyte in eastern North America. Yet several specimens preliminarily identified as U. crispa were collected from the upper portions of boulders in the Shawangunks, NY. Mitochondrial (nad5) and chloroplast (rps4 and trnL-trnF) sequence data were produced for these specimens, confirming their status as the first record of rock-dwelling U. crispa in North America. The reviewed loci were then used to assess phylogenetic relationships of Northeastern US Ulota species, incorporating a species not yet reviewed, U. coarctata. Conforming to peristome morphology, Ulota hutchinsiae appears to be more closely related to U. crispa than to U. coarctata. Monophyly was recovered for U. crispa and U. coarctata. Although monophyly was not found for U. hutchinsiae, it is diagnosably distinct based on the reviewed loci. While almost identical in number of nucleotides sequenced, mitochondrial DNA held substantially less phylogenetically informative nucleotides than the chloroplast loci, but did have important indel information segregating U. coarctata from other species reviewed.

  11. Present Status of Family Dicranaceae (Bryophyta in Pachmarhi Wildlife Sanctuary, Central India

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    Reesa Gupta

    2016-08-01

    Full Text Available The present study outlines the current status of moss family Dicranaceae in Pachmarhi Sanctuary, a part of Pachmarhi Biosphere Reserve. During the taxonomic evaluation of the moss flora of this Reserve, eight taxa of Dicranaceae have been encountered belonging to three genera viz. Campylopus Bridel, Dicranella C. Muell. And Leuculoma Bridel. Among these, Campylopus gracilis (Mitt. A. Jaeger, Campylopus flexuosus (Hedw. Bridel, Dicranella leptoneura Dixon and Leucoloma taylorii (Schwaegr. Mitt., are new additions to the moss flora of central Indian bryogeographical region.

  12. Contrasting phylogeographic patterns in Sphagnum fimbriatum and Sphagnum squarrosum (Bryophyta, Sphagnopsida) in Europe.

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    Szövényi, Péter; Hock, Zsófia; Urmi, Edwin; Schneller, Jakob J

    2006-01-01

    The chloroplast phylogeography of two peat mosses (Sphagnum fimbriatum and Sphagnum squarrosum) with similar distributions but different life history characteristics was investigated in Europe. Our main aim was to test whether similar distributions reflect similar phylogeographic and phylodemographic processes. Accessions covering the European distributions of the species were collected and approx. 2000 bp of the chloroplast genome of each species was sequenced. Maximum parsimony, statistical parsimony and phylodemographic analyses were used to address the question of whether these species with similar distributions show evidence of similar phylogeographic and phylodemographic processes. The chloroplast haplotypes of the currently spreading species S. fimbriatum showed strong geographic structure, whereas those of S. squarrosum, which has stable historical population sizes, showed only very weak geographic affinity and were widely distributed. We hypothesize that S. fimbriatum survived the last glaciations along the Atlantic coast of Europe, whereas S. squarrosum had numerous, scattered refugia in Europe. The dominance of one haplotype of S. fimbriatum across almost all of Europe suggests rapid colonization after the last glacial maximum. We hypothesize that high colonizing ability is an inherent characteristic of the species and its recent expansion in Europe is a response to climate change.

  13. Effects of Experimental Lead Pollution on the Microbial Communities Associated with Sphagnum fallax (Bryophyta)

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    Nguyen Viet, Hung; Gilbert, Daniel; Mitchell, Edward A.D.; Badot, Pierre-Marie; Bernard, Nadine

    2010-01-01

    Ecotoxicological studies usually focus on single microbial species under controlled conditions. As a result, little is known about the responses of different microbial functional groups or individual species to stresses. In an aim to assess the response of complex microbial communities to pollution in their natural habitat, we studied the effect of a simulated lead pollution on the microbial community (bacteria, cyanobacteria, protists, fungi, and micrometazoa) living on Sphagnum fallax. Moss...

  14. Effects of experimental lead pollution on the microbial communities associated with Sphagnum fallax (Bryophyta).

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    Nguyen-Viet, H; Gilbert, D; Mitchell, E A D; Badot, P-M; Bernard, N

    2007-08-01

    Ecotoxicological studies usually focus on single microbial species under controlled conditions. As a result, little is known about the responses of different microbial functional groups or individual species to stresses. In an aim to assess the response of complex microbial communities to pollution in their natural habitat, we studied the effect of a simulated lead pollution on the microbial community (bacteria, cyanobacteria, protists, fungi, and micrometazoa) living on Sphagnum fallax. Mosses were grown in the laboratory with 0 (control), 625, and 2,500 microg L(-1) of Pb(2+) diluted in a standard nutrient solution and were sampled after 0, 6, 12, and 20 weeks. The biomasses of bacteria, microalgae, testate amoebae, and ciliates were dramatically and significantly decreased in both Pb addition treatments after 6, 12, and 20 weeks in comparison with the control. The biomass of cyanobacteria declined after 6 and 12 weeks in the highest Pb treatment. The biomasses of fungi, rotifers, and nematodes decreased along the duration of the experiment but were not significantly affected by lead addition. Consequently, the total microbial biomass was lower for both Pb addition treatments after 12 and 20 weeks than in the controls. The community structure was strongly modified due to changes in the densities of testate amoebae and ciliates, whereas the relative contribution of bacteria to the microbial biomass was stable. Differences in responses among the microbial groups suggest changes in the trophic links among them. The correlation between the biomass of bacteria and that of ciliates or testate amoebae increased with increasing Pb loading. We interpret this result as an effect on the grazing pathways of these predators and by the Pb effect on other potential prey (i.e., smaller protists). The community approach used here complements classical ecotoxicological studies by providing clues to the complex effect of pollutant-affecting organisms both directly and indirectly through trophic effects and could potentially find applications for pollution monitoring.

  15. Does the core circadian clock in the moss Physcomitrella patens (Bryophyta comprise a single loop?

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    Hedman Harald

    2010-06-01

    Full Text Available Abstract Background The endogenous circadian clock allows the organism to synchronize processes both to daily and seasonal changes. In plants, many metabolic processes such as photosynthesis, as well as photoperiodic responses, are under the control of a circadian clock. Comparative studies with the moss Physcomitrella patens provide the opportunity to study many aspects of land plant evolution. Here we present a comparative overview of clock-associated components and the circadian network in the moss P. patens. Results The moss P. patens has a set of conserved circadian core components that share genetic relationship and gene expression patterns with clock genes of vascular plants. These genes include Myb-like transcription factors PpCCA1a and PpCCA1b, pseudo-response regulators PpPRR1-4, and regulatory elements PpELF3, PpLUX and possibly PpELF4. However, the moss lacks homologs of AtTOC1, AtGI and the AtZTL-family of genes, which can be found in all vascular plants studied here. These three genes constitute essential components of two of the three integrated feed-back loops in the current model of the Arabidopsis circadian clock mechanism. Consequently, our results suggest instead a single loop circadian clock in the moss. Possibly as a result of this, temperature compensation of core clock gene expression appears to be decreased in P. patens. Conclusions This study is the first comparative overview of the circadian clock mechanism in a basal land plant, the moss P. patens. Our results indicate that the moss clock mechanism may represent an ancestral state in contrast to the more complex and partly duplicated structure of subsequent land plants. These findings may provide insights into the understanding of the evolution of circadian network topology.

  16. LOS MUSGOS (BRYOPHYTA DE LA REGIÓN DE SANTA MARÍA-BOYACÁ (COLOMBIA

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    AVENDAÑO-TORRES KARINA

    2007-06-01

    Full Text Available En la región de Santa María (Boyacá se registraron 68 especies de musgos,pertenecientes a 45 géneros y 21 familias; 22 taxones son nuevos registros para eldepartamento. Las familias más ricas en géneros y especies fueron: Hypnaceae (8géneros - 8 especies, Meteoriaceae (6-7, Pilotrichaceae (4-7 y Fissidentaceae (1-6. Los géneros más ricos en especies fueron: Fissidens (6 y Syrrhopodon (3. Lacomposición por región de vida fue para la tropical de 63 especies en 45 génerosy 21 familias y para la subandina 22 especies de 19 géneros y 15 familias. Las dosregiones comparten 17 especies, en 17 géneros y 14 familias. Los hábitats (sustratosmás diversos fueron: epífi tos (16 especies, epilíticos (8 y epilítico-terrestres (8,doce especies se presentaron en todos los sustratos. Las formas de vida con mayorrepresentación fueron: cespitosas cortas (24 y felpas lisas (17.

  17. New mosses records (Bryophyta for Goiás and Tocantins states, Brazil Ocorrências novas de musgos (Bryophyta para os Estados de Goiás e Tocantins, Brasil

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    Denilson Fernandes Peralta

    2008-09-01

    Full Text Available Sixty-five moss taxa are new records for Goiás and Tocantins States. Of these, 44 are new records (40 - Goiás; four - Tocantins and 23 are new sites in each of the states (19 -Goiás; four - Tocantins. Ptychostomum pallescens (Schleich. ex Schwägr. Spence and Philonotis fontana (Hedw. Brid. are new records for Brazil, and are illustrated.Após o estudo da coleção do herbário SP, foram encontradas 65 novas ocorrências de musgos para Goiás e Tocantins. Deste total, 44 táxons são primeiras referências (40 - Goiás e quatro - Tocantins e 23 táxons tiveram a distribuição geográfica ampliada em cada um dos estados (19 - Goiás e quatro - Tocantins. As espécies Ptychostomum pallescens (Schleich. ex Schwägr. Spence e Philonotis fontana (Hedw. Brid. são novas citações para o Brasil e apresentam ilustração.

  18. Os gêneros Lepidopilidium, Lepidopilum, Pilotrichum e Thamniopsis (Pilotrichaceae, Bryophyta no Estado do Rio de Janeiro, Brasil The genera Lepidopilidium, Lepidopilum, Pilotrichum and Thamniopsis (Pilotrichaceae, Bryophyta in Rio de Janeiro State, Brazil

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    Thaís de Freitas Vaz

    2006-12-01

    Full Text Available A família Pilotrichaceae está bem representada no Estado do Rio de Janeiro, onde ocorrem 11 gêneros e 35 espécies. O trabalho trata das 17 espécies dos gêneros Lepidopilidium (Müll. Hal., Lepidopilum (Brid. Brid., Pilotrichum P. Beauv. e Thamniopsis (Mitt. M. Fleisch. presentes no Estado do Rio de Janeiro. São apresentadas descrições diagnósticas, ilustrações, comentários taxonômicos, distribuição geográfica e status de conservação para cada espécie.The family Pilotrichaceae is well represented in the state of Rio de Janeiro, where 11 genera and 35 species occur. The study includes 17 species of Lepidopilidium (Müll. Hal., Lepidopilum (Brid. Brid., Pilotrichum P. Beauv. and Thamniopsis (Mitt. M. Fleisch. from Rio de Janeiro State. Diagnostic descriptions, illustrations, floristic comments, geographic distribution and conservation status are provided for each species.

  19. Os gêneros Brymela, Callicostella, Crossomitrium, Cyclodictyon, Hookeriopsis, Hypnella e Trachyxiphyum (Pilotrichaceae, Bryophyta no Estado do Rio de Janeiro, Brasil The genera Brymela, Callicostella, Crossomitrium, Cyclodictyon, Hookeriopsis, Hypnella and Trachyxiphium (Pilotrichaceae, Bryophyta in Rio de Janeiro State, Brazil

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    Thaís de Freitas Vaz

    2006-12-01

    Full Text Available No Estado do Rio de Janeiro a família Pilotrichaceae está representada por 35 espécies, compreendidas em 11 gêneros. O trabalho é parte dos estudos realizados com a família no Estado, tratando de 18 espécies pertencentes aos gêneros Brymela Crosby & B.H. Allen, Callicostella (Müll. Hal. Mitt., Crossomitrium Müll. Hal., Cyclodictyon Mitt., Hookeriopsis (Besch. A. Jaeger, Hypnella (Müll. Hal. A. Jaeger e Trachyxiphium W.R. Buck. São apresentados para cada espécie descrições diagnósticas, ilustrações, comentários, distribuição geográfica e o status de conservação.Pilotrichaceae is represented in Rio de Janeiro State by 35 species and 11 genera. This work is part of a larger study on the family in the state, and presents a taxonomic treatment of 18 species in the genera Brymela Crosby & B.H. Allen, Callicostella (Müll. Hal. Mitt., Crossomitrium Müll. Hal., Cyclodictyon Mitt., Hookeriopsis (Besch. A. Jaeger, Hypnella (Müll. Hal. A. Jaeger and Trachyxiphium W.R. Buck. Descriptions, illustrations, comments, distribution, and conservation status for each species are presented.

  20. Identification guide to Nordic aphids associated with mosses, horsetails and ferns (Bryophyta, Equisetophyta, Polypodiophyta (Insecta, Hemiptera, Aphidoidea

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    Anders Christian Albrecht

    2015-10-01

    Full Text Available Keys and diagnoses of North European aphids (Hemiptera, Aphidoidea associated with mosses, horsetails and ferns are given, based on fresh and freeze-dried material. Numerous externally visible and thus informative characters, that are absent in cleared, slide-mounted specimens, such as body shape colours, wax coating and pattern etc., are utilized. Most of the species are illustrated by photographs of live specimens and drawings. Root-feeding species living in the moss layer or otherwise often present in moss samples are also included, even if their hosts were spermatophytes. The combination of colour images and diagnoses, utilizing easily observed characters, allows the identification of a large number of species already in the field, and many more at home with the aid of a stereo microscope. Host plant relationships and association with ants are summarised, including new records. Brief accounts on aphid life cycles, freeze-drying preparation techniques, etc. are also given to support the use of the keys.

  1. Ecological niche comparison and molecular phylogeny segregate the invasive moss species Campylopus introflexus (Leucobryaceae, Bryophyta) from its closest relatives

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    Gama, R.; Aguirre Gutierrez, J; Stech, M

    2017-01-01

    Abstract The delimitation of the invasive moss species Campylopus introflexus from its closest relative, Campylopus pilifer, has been long debated based on morphology. Previous molecular phylogenetic reconstructions based on the nuclear ribosomal internal transcribed spacers (ITS) 1 and 2 showed that C. pilifer is split into an Old World and a New World lineage, but remained partly inconclusive concerning the relationships between these two clades and C. introflexus. Analyses of an extended I...

  2. MUSGOS (BRYOPHYTA DEL PARQUE NACIONAL ÁVILA, SECTORES CERRO EL ÁVILA – LAGUNAZO, VENEZUELA

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    Morales Thalia

    2009-12-01

    Full Text Available Se reportan 29 familias, 74 géneros y 111 especies de musgos para los sectores CerroEl Ávila y Lagunazo, Parque Nacional El Ávila en Caracas, Venezuela. Las familiasPottiaceae, Dicranaceae y Fissidentaceae fueron las más ricas en géneros y especies.A lo largo las seis localidades estudiadas la mayor riqueza de musgos se encontró a1700 m de altura. Del total de especies inventariadas el 60 % corresponden al hábitoacrocárpico, el 43% de los taxones se ubicaron en el sustrato terrestre y la forma devida cespitosa corta (Cc fue la más representativa, con él 44.7% de las especies demusgo. Se adicionan cinco especies a la fl ora muscícola de Venezuela: Rhodobryumroseum (Hedw. Limpr., Pilopogon tiquipayae Herzog, Taxiphyllum taxirameum(Mitt. M. Fleisch., Leskea plumaria Mitt., Bryoerythrophyllum campylocarpum(Müll. Hal. H.A. Crum. Se citan también 22 nuevos registros a la briofl ora de laregión de la Cordillera de la Costa.

  3. First record of Hydrogonium gregarium (Pottiaceae, Bryophyta in Russia: an interesting extension of the species’ distribution to the heart of the permafrost zone

    Directory of Open Access Journals (Sweden)

    Ignatova Elena A.

    2013-12-01

    Full Text Available Hydrogonium gregarium (Mitt. Jan Kučera, previously known from Southeast Asia, Japan, and scattered occurrences in Pacific North America south to Mexico, is reported for the first time in Russia from the central part of Yakutia at the western foothills of the Verkhoyansk Range. Both morphology and nuclear ITS sequence data confirm its identity with H. gregarium var. gregarium. The species is described and illustrated, and its habitat is briefly discussed.

  4. Use of bryophyta for air pollution monitoring: state of research in Italy; L'utilizzo delle briofite nel monitoraggio ambientale: stato della ricerra in Italia

    Energy Technology Data Exchange (ETDEWEB)

    Cenci, R.M.; Aleffi, M. [European Commission, Ispra (Italy). Centro Comune di Ricerca di Ispra Instituto dell' Ambiente, Unit Suolo e Rifiuti

    2001-07-01

    The moss Hypnum cupressiforme was collected in 94 sites throughout the Colline Metallifere (southern Tuscany) to evaluate environmental contamination by trace elements. As epigeic mosses trap airborne soil particles, absolute concentrations of lithophilic elements were normalised by using Al and Ti as indicators of soil contamination. High concentrations of As, B, Cr, Ni and other elements were found in several samples, mainly reflecting the geochemical nature of the region, abandoned mining and smelting activities and emissions from geothermal power plants. Possible approaches to improve the biomonitoring of trace metals with mosses were discussed.

  5. Botanická ilustrace - mechorosty

    OpenAIRE

    KOLÁŘOVÁ, Martina

    2013-01-01

    This diploma thesis deals with Bryophyta studies as a part of curriculum at primary schools as well as at lower and upper grammar schools. It determines the field of studies and the expected outcomes in the Human and Nature subject matter, it searches for the link between bryophyta and cross-sectional topics. The relation of pupil's key competences to bryophyta is being reflected, too. It compares the subject range of Bryophyta in school books. Furthermore, the thesis sums up the history of b...

  6. Musgos (Bryophyta de um fragmento de Mata Atlântica na Serra da Jibóia, município de Santa Terezinha, BA, Brasil Mosses (Bryophyta from a fragment of Atlantic Forest in the Jibóia Mountains, Santa Terezinha municipality, Bahia State, Brazil

    Directory of Open Access Journals (Sweden)

    Emilia de Brito Valente

    2009-06-01

    Full Text Available O levantamento de musgos realizado em uma área de Mata Atlântica no município de Santa Terezinha, Bahia, resultou em flora rica, com 61 espécies pertencentes a 23 famílias e 46 gêneros. Sematophyllaceae (sete spp., Orthotrichaceae (seis spp., Pilotrichaceae (cinco spp., Calymperaceae (cinco spp., Leucobryaceae (cinco spp. e Meteoriaceae (quatro spp. apresentaram maior riqueza específica. Actinodontium integrifolium (Broth. Churchill e Calymperes venezuelanum (Mitt. Broth. ex Pittier constituem novos registros para o Brasil. Ectropothecium leptochaeton (Schwaegr. W.R. Buck, Eulacophyllum cultelliforme (Sull. W.R. Buck & Ireland, Fissidens santaclarensis Thér., Lepidopilidium portoricense (Müll. Hal. H.A. Crum & Steere, Mittenothamnium reptans (Hedw. Card., Orthostichella pentasticha (Brid. W.R. Buck, Pilotrichella flexilis (Hedw. Ångstr., Porotrichum mutabile Hampe e Thuidium tomentosum Schimp. são novas ocorrências para a Bahia. Houve predomínio de táxons de distribuição neotropical. A comunidade corticícola foi predominante com 70% das espécies, seguida da epíxila, com 23%. A brioflora do fragmento mostrou-se rica já que corresponde a 24% do total de briófitas atualmente conhecido no Estado.This work presents the results of an inventory of mosses carried out in an Atlantic Forest fragment in the Jibóia Mountains, Santa Terezinha, Bahia State, Brazil. A total of 61 moss species distributed in 23 families and 46 genera were found. The families Sematophyllaceae (seven spp., Orthotrichaceae (six spp., Pilotrichaceae (five spp., Calymperaceae (five spp., Leucobryaceae (five spp. and Meteoriaceae (four spp. had higher species richness. Actinodontium integrifolium (Broth. Churchill and Calymperes venezuelanum (Mitt. Pitt. are new records for Brazil. Ectropothecium leptochaeton (Schwaegr. W.R. Buck., Eulacophyllum cultelliforme (Sull. W.R. Buck & Ireland, Fissidens santa-clarensis Thér., Mittenothamnium reptans (Hedw. Card., Orthostichella pentasticha (Brid. Buck, Pilotrichella flexilis (Hedw. Ångstr., Lepidopilidium portoricense (Müll. Hal. Crum & Steere, and Thuidium tomentosum Schimp. are new records for Bahia. As regards geografic distribuition, neotropical taxa predominate, while in relation to communities, corticicolous (70% and epixilous species (23% predominate. The local flora was considered rich for including 24% of the bryophytes that occur in Bahia State.

  7. Musgos pleurocárpicos dos fragmentos de Mata Atlântica da Reserva Ecológica da Michelin, município de Igrapiúna, BA, Brasil: II - Hypnales (Bryophyta: Bryopsida Pleurocarpous mosses from Atlantic Forest fragments at the Michelin Ecological Reserve, Igrapiúna County, Bahia State Brazil: II - Hypnales (Bryophyta: Bryopsida

    Directory of Open Access Journals (Sweden)

    Silvana B. Vilas Bôas-Bastos

    2009-09-01

    Full Text Available Durante os estudos brioflorísticos realizados na Reserva Ecológica da Michelin, foram identificadas 37 espécies de Hypnales pertencentes a 10 famílias. Sematophyllaceae e Pylaisiadelphaceae contribuíram com o maior número de espécies, 10 e sete, respectivamente, seguidas de Neckeraceae com seis. Taxithelium planum (Brid. Mitt. e Sematophyllum subsimplex (Hedw. Mitt. foram as espécies com maior ocorrência na área de estudo, 78 e 54 ocorrências, respectivamente. Estão sendo apresentadas chaves de identificação para os gêneros, distribuição geográfica, espectro ecológico e comentários para as espécies.During a bryofloristic study at the Michelin Ecological Reserve, 37 species were identified belonging to 10 families. Sematophyllaceae and Pylaisiadelphaceae were the most species-rich families, 10 and seven, respectively, followed by Neckeraceae with six species. Taxithelium planum (Brid. Mitt. and Sematophyllum subsimplex (Hedw. Mitt. were common, with 78 and 54 occurrences, respectively. An identification key to the genera, geographic distribution, ecological spectrum and comments on the species are provided.

  8. COMPARATIVE STUDIES ON MOSSES FOR AIR POLLUTION ...

    African Journals Online (AJOL)

    Osondu

    2012-08-16

    Aug 16, 2012 ... The division bryophyta also consists of liverworts and hornworts. Bryophyta have been long considered to be insignificant in the economy of man except for those used in packing, plugging and decoration. Recent progress in environmental pollution studies has changed our understanding of bryophytes as ...

  9. Musgos (Bryophita do nordeste Paranaense, Brasil -1. Zona Bragantina, microrregião do Salgado e município de Viseu Mosses (Bryophyta of northeast Pará, Brazil -1. Zona Bragantina Salgado microregion and Viseu municipality

    Directory of Open Access Journals (Sweden)

    Rita de Cássia P. dos Santos

    2003-01-01

    Full Text Available Neste trabalho foram inventariadas as espécies de musgos que ocorrem nos diferentes tipos de vegetação dos municípios da Zona Bragantina, da Microrregião do Salgado e município de Viseu, todos localizados no Nordeste Paraense. Coletaram-se 632 amostras, que resultaram em 60 espécies e uma variedade, distribuídas em 30 gêneros e 16 famílias. Sematophyllaceae, Calymperaceae e Leucobryaceae destacaram-se em diversidade de espécies e número de ocorrências. Sematophyllum subsimplex (Hedw. Mitt. e Calymperes lonchophyllum Schwaegr. são as espécies mais abundantes. Os resultados referentes à Microrregião do Salgado são comparados aos encontrados na Zona Bragantina e município de Viseu. Ocorre maior diversidade nas matas primárias, indicando que a substituição delas por vegetação secundária resulta no empobrecimento da diversidade das espécies de musgos.This paper is an inventory of moss species occuring in diferent types of vegetation in the Zona Bragantina, Salgado microregion and Viseu municipalities, all located in the northeast of Pará. The results found 60 species and one variety in 632 moss samples, distributed in 30 genera and 16 families. Sematophyllaceae, Calymperaceae e Leucobryaceae were prominent in diversity of species and number of occurrencies. Sematophyllum subsimplex (Hedw. Mitt. and Calymperes lonchophyllum Schwaegr. are the most abundant species. The results found at Salgado Microregion were compared to the results found at Zona Bragantina and Viseu municipalities. There is a higher diversity in primary vegetation, indicating that the replacement by the secondary vegetation results in the impoverishment of moss species diversity.

  10. Investigation of antimicrobial activity of some Turkish pleurocarpic ...

    African Journals Online (AJOL)

    Jane

    2011-10-05

    28. Basile A, Vuotto MT, Lelpo MTL, Moscatiello V, Ricciardi L, Giordano S,. Cobianchi Castaldo R (1998b). Antibacterial Activity in. Rhynchostegium riparioides (Hedw.) Card. Extract (Bryophyta),. Phytother. Res., 12, 146-148.

  11. Caddisfly (Trichoptera) larvae of the Opa River basin, south-western ...

    African Journals Online (AJOL)

    The large number of hydropsychid caddisflies at one sampling station was attributed to the presence of submerged beds of Fontinalis (Bryophyta) in that area, which is usually associated with the occurrence of that taxon. Efforts should be made to create favourable conditions in the streams and rivers of this catchment to ...

  12. Download this PDF file

    African Journals Online (AJOL)

    Dr Francis

    Tethyan group of Syntrichia (Pottiaceae, Bryophyta): The S. caninervis complex. Systematic Botany 27 (4): 643-653. Kürschner HF (2000) Bryophyte flora of the Arabian peninsula and Socotra. Bryoph. Bibl. 55: 1-131. Magill RE (1976) Mosses of Big Bend National Park, Texas. The Bryologist 79: 269-295. Magill RE (1981) ...

  13. Observations on the seasonal dynamics of Caddisfly larvae ...

    African Journals Online (AJOL)

    The Trichoptera fauna in the water body consisted of two genera, Cheumatopsyche and Amphipsyche, which closely associated with the moss, Fontinalis (Bryophyta). The density of larvae increased with the occurrence and bloom of moss. The changes in density of larvae are discussed with reference to the resources ...

  14. Progress in Malaysian botany

    NARCIS (Netherlands)

    NN,

    1956-01-01

    Bryophyta. The new collections built up during the last years under the supervision of Prof. R. van der Wijk, Groningen, have now all been arranged and provisionally been identified by him and his collaborator Mr Margadant. Revisional work has started. Pteridophyta. A most important collaboration,

  15. Contributions to Bryophyte Flora of Zonguldak Province

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    Muhammet ÖREN

    2015-12-01

    Full Text Available With this study, some new bryophyte taxa have been added for the bryophyte flora of Zonguldak. One taxon from Anthoceratophyta (Hornworts, 11 from Marchantiophyta (Liverworts and 55 from Bryophyta (Mosses, totally 67 taxa are determined as new for the bryophyte flora of Zonguldak province with examination of specimens collected from field trips held on different habitats between 2012-2014. Among them, 14 taxa are newly reported from A2 square according to the Henderson grid system. Considering previous studies, the number of specific and infra specific taxa in the research area are reached up to 282.

  16. Micro-Eukaryotic Diversity in Hypolithons from Miers Valley, Antarctica

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    Don A. Cowan

    2013-02-01

    Full Text Available The discovery of extensive and complex hypolithic communities in both cold and hot deserts has raised many questions regarding their ecology, biodiversity and relevance in terms of regional productivity. However, most hypolithic research has focused on the bacterial elements of the community. This study represents the first investigation of micro-eukaryotic communities in all three hypolith types. Here we show that Antarctic hypoliths support extensive populations of novel uncharacterized bryophyta, fungi and protists and suggest that well known producer-decomposer-predator interactions may create the necessary conditions for hypolithic productivity in Antarctic deserts.

  17. Adições à flora de briófitas de Mato Grosso do Sul, Brasil Additions to the flora of bryophytes from Mato Grosso do Sul State, Brazil

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    Olga Yano

    2004-09-01

    Full Text Available Nesse levantamento foram encontrados 133 táxons no Estado de Mato Grosso do Sul, sendo um pertencente à divisão Anthocerotophyta em um gênero e uma família, 83 pertencentes à divisão Bryophyta, distribuídos em 54 gêneros e 27 famílias, e 49 à divisão Hepatophyta, distribuídos em 27 gêneros e 13 famílias. Destes, 100 (1 antócero, 59 musgos e 40 hepáticas são novas citações para o Estado.In this taxonomic survey 133 taxa were found in Mato Grosso do Sul State, one belonging to Anthocerotophyta, distributed into one genus and one family, 83 belonging to Bryophyta, distributed into 54 genera and 27 families, and 49 belonging to Hepatophyta, distributed into 27 genera and 13 families. Of these, 100 (one hornworts, 59 mosses and 40 hepatics are new records for the State.

  18. Evolutionary genomics revealed interkingdom distribution of Tcn1-like chromodomain-containing Gypsy LTR retrotransposons among fungi and plants

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    Blinov Alexander

    2010-04-01

    Full Text Available Abstract Background Chromodomain-containing Gypsy LTR retrotransposons or chromoviruses are widely distributed among eukaryotes and have been found in plants, fungi and vertebrates. The previous comprehensive survey of chromoviruses from mosses (Bryophyta suggested that genomes of non-seed plants contain the clade which is closely related to the retrotransposons from fungi. The origin, distribution and evolutionary history of this clade remained unclear mainly due to the absence of information concerning the diversity and distribution of LTR retrotransposons in other groups of non-seed plants as well as in fungal genomes. Results In present study we preformed in silico analysis of chromodomain-containing LTR retrotransposons in 25 diverse fungi and a number of plant species including spikemoss Selaginella moellendorffii (Lycopodiophyta coupled with an experimental survey of chromodomain-containing Gypsy LTR retrotransposons from diverse non-seed vascular plants (lycophytes, ferns, and horsetails. Our mining of Gypsy LTR retrotransposons in genomic sequences allowed identification of numerous families which have not been described previously in fungi. Two new well-supported clades, Galahad and Mordred, as well as several other previously unknown lineages of chromodomain-containing Gypsy LTR retrotransposons were described based on the results of PCR-mediated survey of LTR retrotransposon fragments from ferns, horsetails and lycophytes. It appeared that one of the clades, namely Tcn1 clade, was present in basidiomycetes and non-seed plants including mosses (Bryophyta and lycophytes (genus Selaginella. Conclusions The interkingdom distribution is not typical for chromodomain-containing LTR retrotransposons clades which are usually very specific for a particular taxonomic group. Tcn1-like LTR retrotransposons from fungi and non-seed plants demonstrated high similarity to each other which can be explained by strong selective constraints and the

  19. Diversity of endolithic fungal communities in dolomite and limestone rocks from Nanjiang Canyon in Guizhou karst area, China.

    Science.gov (United States)

    Tang, Yuan; Lian, Bin

    2012-06-01

    The endolithic environment, the tiny pores and cracks in rocks, buffer microbial communities from a number of physical stresses, such as desiccation, rapid temperature variations, and UV radiation. Considerable knowledge has been acquired about the diversity of microorganisms in these ecosystems, but few culture-independent studies have been carried out on the diversity of fungi to date. Scanning electron microscopy of carbonate rock fragments has revealed that the rock samples contain certain kinds of filamentous fungi. We evaluated endolithic fungal communities from bare dolomite and limestone rocks collected from Nanjiang Canyon (a typical karst canyon in China) using culture-independent methods. Results showed that Ascomycota was absolutely dominant both in the dolomite and limestone fungal clone libraries. Basidiomycota and other eukaryotic groups (Bryophyta and Chlorophyta) were only detected occasionally or at low frequencies. The most common genus in the investigated carbonate rocks was Verrucaria. Some other lichen-forming fungi (e.g., Caloplaca, Exophiala, and Botryolepraria), Aspergillus, and Penicillium were also identified from the rock samples. The results provide a cross-section of the endolithic fungal communities in carbonate rocks and help us understand more about the role of microbes (fungi and other rock-inhabiting microorganisms) in rock weathering and pedogenesis.

  20. Quickly-released peroxidase of moss in defense against fungal invaders.

    Science.gov (United States)

    Lehtonen, Mikko T; Akita, Motomu; Kalkkinen, Nisse; Ahola-Iivarinen, Elina; Rönnholm, Gunilla; Somervuo, Panu; Thelander, Mattias; Valkonen, Jari P T

    2009-01-01

    Mosses (Bryophyta) are nonvascular plants that constitute a large part of the photosynthesizing biomass and carbon storage on Earth. Little is known about how this important portion of flora maintains its health status. This study assessed whether the moss, Physcomitrella patens, responds to treatment with chitosan, a fungal cell wall-derived compound inducing defense against fungal pathogens in vascular plants. Application of chitosan to liquid culture of P. patens caused a rapid increase in peroxidase activity in the medium. For identification of the peroxidase(s), matrix-assisted laser desorption/ionization-time-of-flight (MALDI-TOF)/MS, other methods and the whole-genome sequence of P. patens were utilized. Peroxidase gene knock-out mutants were made and inoculated with fungi. The peroxidase activity resulted from a single secreted class III peroxidase (Prx34) which belonged to a P. patens specific phylogenetic cluster in analysis of the 45 putative class III peroxidases of P. patens and those of Arabidopsis and rice. Saprophytic and pathogenic fungi isolated from another moss killed the Prx34 knockout mutants but did not damage wild-type P. patens. The data point out the first specific host factor that is pivotal for pathogen defense in a nonvascular plant. Furthermore, results provide conclusive evidence that class III peroxidases in plants are needed in defense against hostile invasion by fungi.

  1. Distribution and biological activities of the flavonoid luteolin.

    Science.gov (United States)

    López-Lázaro, Miguel

    2009-01-01

    Epidemiological evidence suggests that flavonoids may play an important role in the decreased risk of chronic diseases associated with a diet rich in plant-derived foods. Flavonoids are also common constituents of plants used in traditional medicine to treat a wide range of diseases. The purpose of this article is to summarize the distribution and biological activities of one of the most common flavonoids: luteolin. This flavonoid and its glycosides are widely distributed in the plant kingdom; they are present in many plant families and have been identified in Bryophyta, Pteridophyta, Pinophyta and Magnoliophyta. Dietary sources of luteolin include, for instance, carrots, peppers, celery, olive oil, peppermint, thyme, rosemary and oregano. Preclinical studies have shown that this flavone possesses a variety of pharmacological activities, including antioxidant, anti-inflammatory, antimicrobial and anticancer activities. The ability of luteolin to inhibit angiogenesis, to induce apoptosis, to prevent carcinogenesis in animal models, to reduce tumor growth in vivo and to sensitize tumor cells to the cytotoxic effects of some anticancer drugs suggests that this flavonoid has cancer chemopreventive and chemotherapeutic potential. Modulation of ROS levels, inhibition of topoisomerases I and II, reduction of NF-kappaB and AP-1 activity, stabilization of p53, and inhibition of PI3K, STAT3, IGF1R and HER2 are possible mechanisms involved in the biological activities of luteolin.

  2. Peatmoss (Sphagnum) diversification associated with Miocene Northern Hemisphere climatic cooling?

    Science.gov (United States)

    Shaw, A Jonathan; Devos, Nicolas; Cox, Cymon J; Boles, Sandra B; Shaw, Blanka; Buchanan, Alex M; Cave, Lynette; Seppelt, Rodney

    2010-06-01

    Global climate changes sometimes spark biological radiations that can feed back to effect significant ecological impacts. Northern Hemisphere peatlands dominated by living and dead peatmosses (Sphagnum) harbor almost 30% of the global soil carbon pool and have functioned as a net carbon sink throughout the Holocene, and probably since the late Tertiary. Before that time, northern latitudes were dominated by tropical and temperate plant groups and ecosystems. Phylogenetic analyses of mosses (phylum Bryophyta) based on nucleotide sequences from the plastid, mitochondrial, and nuclear genomes indicate that most species of Sphagnum are of recent origin (ca. Sphagnum species are not only well-adapted to boreal peatlands, they create the conditions that promote development of peatlands. The recent radiation that gave rise to extant diversity of peatmosses is temporally associated with Miocene climatic cooling in the Northern Hemisphere. The evolution of Sphagnum has had profound influences on global biogeochemistry because of the unique biochemical, physiological, and morphological features of these plants, both while alive and after death. 2010 Elsevier Inc. All rights reserved.

  3. Herbarium Areqvipense (HUSA: computerization and representativeness of its collection

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    Italo F. Treviño

    2012-11-01

    Full Text Available Scientific collections and herbaria are essential sources of information and education for researchers and practitioners in biological sciences. The Herbarium Areqvipense (HUSA, registered at Index Herbariorum since 2004, holds one of the most important collections in Peru. In this paper we provide information about the collection, and its representativeness for the Peruvian flora. HUSA has more than 11000 specimens recorded to date, with more than 2300 determined species, consisting mostly of Magnoliophyta and Pteridophyta (ca. 98%, and a smaller proportion of Basidiomycetes, Ascomycetes (fungi and lichens and Bryophyta (mosses. The collection includes specimens from 23 departments of Peru, where the samples belonging to Arequipa have the largest number of individuals collected (3375 accounting for 31% of the collection. Asteraceae and Solanaceae are the most collected with 1571 and 964 specimens, respectively. The majority of geo-referenced specimens came from the tropical wet forest with 15%, followed by the tropical pre-montane wet forest with 8%. We also provide a list of the nomenclatural types and a brief summary of the history and development of HUSA since its creation.

  4. Forensic botany: usability of bryophyte material in forensic studies.

    Science.gov (United States)

    Virtanen, Viivi; Korpelainen, Helena; Kostamo, Kirsi

    2007-10-25

    Two experiments were performed to test the relevance of bryophyte (Plantae, Bryophyta) material for forensic studies. The first experiment was conducted to reveal if, and how well, plant fragments attach to footwear in general. In the test, 16 persons walked outdoors wearing rubber boots or hiking boots. After 24h of use outdoors the boots were carefully cleaned, and all plant fragments were collected. Afterwards, all plant material was examined to identify the species. In the second experiment, fresh material of nine bryophyte species was kept in a shed in adverse conditions for 18 months, after which DNA was extracted and subjected to genotyping to test the quality of the material. Both experiments give support for the usability of bryophyte material in forensic studies. The bryophyte fragments become attached to shoes, where they remain even after the wearer walks on a dry road for several hours. Bryophyte DNA stays intact, allowing DNA profiling after lengthy periods following detachment from the original plant source. Based on these experiments, and considering the fact that many bryophytes are clonal plants, we propose that bryophytes are among the most usable plants to provide botanical evidence for forensic investigations.

  5. Market survey on traditional medicine of the third month fair in Dali Prefecture in Yunnan Province, South West China.

    Science.gov (United States)

    Zhang, Dequan; Duan, Lizhen; Zhou, Nong

    2014-01-01

    The Third Month Fair in Dali is a historical festival and fair. The market of traditional medicine (TM) is one of the main parts in the fair, which has important influence on local and peripheral people. In this study, approaches of ethnobotany, pharmacognosy, and participatory rural appraisal were used in market survey. Twenty-six druggists were selected randomly as informants and their TMs were recorded. As a result, 427 TMs were recorded including 362 plant medicines, 33 animal medicines, 13 mineral medicines and 19 unidentified medicines. Xinyi, Shanza and Gancao were the most popular medicines due to their popular usages, whereas Sanqi, Tianma and Renshen were relatively fewer in this investigation probably owing to high price and limited output. The plant medicines were from medicinal plants of 117 families belonged to Angiosperm, Gymnospermae, Pteridophyta, Bryophyta, Lichenes and Fungi. Asteraceae, Apiaceae and Fabaceae provided the maximum numbers of TMs successively. Moreover, these TMs were mainly from the cultivated especially familiar TMs, which reflected significant progress in utilization and conservation of medicinal resource in China. Medicinal market in the Third Month Fair is the most important traditional bazaar in Yunnan province. This study systematically surveyed TMs in the fair for the first time, analyzing and revealing resource compositions and current market situations. These newly gathered data provided precious information for development of medicine cultivation, resource protection and market management as well as further pharmacognostical, pharmacological and clinical researches.

  6. Bacterial and eukaryotic biodiversity patterns in terrestrial and aquatic habitats in the Sør Rondane Mountains, Dronning Maud Land, East Antarctica.

    Science.gov (United States)

    Obbels, Dagmar; Verleyen, Elie; Mano, Marie-José; Namsaraev, Zorigto; Sweetlove, Maxime; Tytgat, Bjorn; Fernandez-Carazo, Rafael; De Wever, Aaike; D'hondt, Sofie; Ertz, Damien; Elster, Josef; Sabbe, Koen; Willems, Anne; Wilmotte, Annick; Vyverman, Wim

    2016-06-01

    The bacterial and microeukaryotic biodiversity were studied using pyrosequencing analysis on a 454 GS FLX+ platform of partial SSU rRNA genes in terrestrial and aquatic habitats of the Sør Rondane Mountains, including soils, on mosses, endolithic communities, cryoconite holes and supraglacial and subglacial meltwater lenses. This inventory was complemented with Denaturing Gradient Gel Electrophoresis targeting Chlorophyta and Cyanobacteria. OTUs belonging to the Rotifera, Chlorophyta, Tardigrada, Ciliophora, Cercozoa, Fungi, Bryophyta, Bacillariophyta, Collembola and Nematoda were present with a relative abundance of at least 0.1% in the eukaryotic communities. Cyanobacteria, Proteobacteria, Bacteroidetes, Acidobacteria, FBP and Actinobacteria were the most abundant bacterial phyla. Multivariate analyses of the pyrosequencing data revealed a general lack of differentiation of both eukaryotes and prokaryotes according to habitat type. However, the bacterial community structure in the aquatic habitats was dominated by the filamentous cyanobacteria Leptolyngbya and appeared to be significantly different compared with those in dry soils, on mosses, and in endolithic habitats. A striking feature in all datasets was the detection of a relatively large amount of sequences new to science, which underscores the need for additional biodiversity assessments in Antarctic inland locations. © FEMS 2016. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  7. Musgos urbanos do recanto das Emas, Distrito Federal, Brasil

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    Câmara Paulo Eduardo

    2003-01-01

    Full Text Available Fruto da ocupação desordenada de Brasília, o Recanto das Emas é uma das mais recentes cidades criadas no entorno da capital. Localizada a 25,8km do Plano Piloto, conta com área de 101.476km². O Recanto das Emas foi criado em 1993 e hoje conta com população de aproximadamente 100.000 habitantes. Foram selecionados vários pontos de coleta procurando abranger toda a cidade e diferentes áreas. Foram encontrados relativamente poucos representantes da brioflórula, com predomínio de espécies ruderais. A divisão Bryophyta conta com 10 espécies e sete famílias, destacandose a família Bryaceae com três espécies. Barbula indica (Hook. Spreng. é citada pela primeira vez para a região Centro-Oeste. Os resultados explicam-se pelo pouco tempo de existência da cidade, que conta com poucos substratos para fixação das populações de briófitas e não permitiram ainda o estabelecimento de nova cobertura vegetal.

  8. Long-term patterns of chironomid assemblages in a high elevation stream/lake network (Switzerland – Implications to global change

    Directory of Open Access Journals (Sweden)

    Brigitte Lods-Crozet

    2012-10-01

    Full Text Available A long-term monitoring program was initiated in 2002 on running and standing waters in a high elevation cirque landscape (Macun in the Swiss National Park. The region comprises contrasting basins with different water sources, a glacier-fed basin and two precipitation-fed basins. Sampling of 26 permanent and temporary ponds (or small lakes and of interconnecting streams (10 sites was conducted from 2002 to 2010. Pond macroinvertebrate assemblages were dominated by chironomids with 42 taxa. The Orthocladiinae were the dominant subfamily in richness and abundance with 22 taxa. The greatest diversity was found in ponds located in the south and outlet basins. The inter-year variability for the same pond is high, but no clear temporal trend was noticed in ponds frequently monitored ponds. The Orthocladiinae subfamily was also the richest in the stream sites where 33 taxa were collected. The north and south basins were separated on the basis of chironomid assemblages. The chironomid assemblages in the stream network shows a temporal trend from 2002 but it cannot be linked to any clear change at the community structure level. The higher richness and abundance in stream sites and ponds of the south basin could be related to a greater heterogeneity in water physico-chemistry and substrata, and by the presence of Bryophyta. The understanding of the environmental factors that influence faunal assemblages is crucial for the protection of this sensitive alpine pond network where a relatively high overall regional diversity (49 taxa is detected. From the literature, temperature is recognized as the driving force on changes in chironomid assemblages in alpine systems. Our results support the use of chironomids as flagship indicators in the assessment of climatic change in alpine landscapes.doi: 10.5324/fn.v31i0.1361.Published online: 17 October 2012.

  9. Restricted variation in plant barcoding markers limits identification in closely related bryophyte species.

    Science.gov (United States)

    Hassel, Kristian; Segreto, Rossana; Ekrem, Torbjørn

    2013-11-01

    Species-level identification and delimitation of bryophytes using the proposed general barcode markers for land plants has been challenging. Bryophyta (mosses) is the second most species-rich group of land plants after angiosperms, and it is thus of great importance to find useful barcoding regions also for this group of plants. We investigated how the plastid regions atpF-atpH, rbcL and trnH-psbA and the nuclear ITS2 region performed as barcode markers on closely related bryophyte taxa of selected moss (Bartramia, Distichium, Fissidens, Meesia and Syntrichia) and liverwort (Blepharostoma) genera from boreal and arctic regions. We also evaluated how sequencing success of herbarium specimens is related to length of the sequenced fragment, specimen age and taxonomic group. Sequencing success was higher for shorter fragments and younger herbarium specimens, but was lower than expected in the genera Distichium and Fissidens, indicating imperfect universality of the primers used. None of the studied DNA barcode regions showed a consistent barcode gap across the studied genera. As a single locus, the region atpF-atpH performed slightly better than rbcL and ITS2 and much better than trnH-psbA in terms of grouping conspecific sequences in monophyletic groups. This marker also gave a higher percentage of correct hits when conducting blast searches on a local database of identified sequences. Concatenated data sets of two and three markers grouped more conspecific sequences in monophyletic groups, but the improvement was not great compared with atpF-atpH alone. A discussion of recent studies testing barcode regions for bryophytes is given. We conclude that atpF-atpH, rbcL and ITS2 are to be the most promising barcode markers for mosses. © 2013 John Wiley & Sons Ltd.

  10. Evolution of land plant genes encoding L-Ala-D/L-Glu epimerases (AEEs) via horizontal gene transfer and positive selection.

    Science.gov (United States)

    Yang, Zefeng; Wang, Yifan; Zhou, Yong; Gao, Qingsong; Zhang, Enying; Zhu, Lei; Hu, Yunyun; Xu, Chenwu

    2013-03-01

    The L-Ala-D/L-Glu epimerases (AEEs), a subgroup of the enolase superfamily, catalyze the epimerization of L-Ala-D/L-Glu and other dipeptides in bacteria and contribute to the metabolism of the murein peptide of peptidoglycan. Although lacking in peptidoglycan, land plants possess AEE genes that show high similarity to those in bacteria. Similarity searches revealed that the AEE gene is ubiquitous in land plants, from bryophytas to angiosperms. However, other eukaryotes, including green and red algae, do not contain genes encoding proteins with an L-Ala-D/L-Glu_epimerase domain. Homologs of land plant AEE genes were found to only be present in prokaryotes, especially in bacteria. Phylogenetic analysis revealed that the land plant AEE genes formed a monophyletic group with some bacterial homologs. In addition, land plant AEE proteins showed the highest similarity with these bacterial homologs and shared motifs only conserved in land plant and these bacterial AEEs. Integrated information on the taxonomic distribution, phylogenetic relationships and sequence similarity of the AEE proteins revealed that the land plant AEE genes were acquired from bacteria through an ancient horizontal gene transfer (HGT) event. Further evidence revealed that land plant AEE genes had undergone positive selection and formed the main characteristics of exon/intron structures through gaining some introns during the initially evolutionary period in the ancestor of land plants. The results of this study clearly demonstrated that the ancestor of land plants acquired an AEE gene from bacteria via an ancient HGT event. Other findings illustrated that adaptive evolution through positive selection has contributed to the functional adaptation and fixation of this gene in land plants.

  11. How to describe species richness patterns for bryophyte conservation?

    Science.gov (United States)

    Hespanhol, Helena; Cezón, Katia; Felicísimo, Ángel M; Muñoz, Jesús; Mateo, Rubén G

    2015-12-01

    A large amount of data for inconspicuous taxa is stored in natural history collections; however, this information is often neglected for biodiversity patterns studies. Here, we evaluate the performance of direct interpolation of museum collections data, equivalent to the traditional approach used in bryophyte conservation planning, and stacked species distribution models (S-SDMs) to produce reliable reconstructions of species richness patterns, given that differences between these methods have been insufficiently evaluated for inconspicuous taxa. Our objective was to contrast if species distribution models produce better inferences of diversity richness than simply selecting areas with the higher species numbers. As model species, we selected Iberian species of the genus Grimmia (Bryophyta), and we used four well-collected areas to compare and validate the following models: 1) four Maxent richness models, each generated without the data from one of the four areas, and a reference model created using all of the data and 2) four richness models obtained through direct spatial interpolation, each generated without the data from one area, and a reference model created with all of the data. The correlations between the partial and reference Maxent models were higher in all cases (0.45 to 0.99), whereas the correlations between the spatial interpolation models were negative and weak (-0.3 to -0.06). Our results demonstrate for the first time that S-SDMs offer a useful tool for identifying detailed richness patterns for inconspicuous taxa such as bryophytes and improving incomplete distributions by assessing the potential richness of under-surveyed areas, filling major gaps in the available data. In addition, the proposed strategy would enhance the value of the vast number of specimens housed in biological collections.

  12. THE DEVELOPMENT AND IMPLEMENTATION OF BIOLOGY TEACHING KITS USING SELF REGULATED LEARNING (SRL STRATEGIES

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    Erie Agusta

    2015-12-01

    Full Text Available Abstract: This study was aimed to develop Biology teaching kits using Self Regulated Learning (SRL-based strategy in senior high schools that have been validated and tested. The study was carried out by using the development strategy of Borg and Gall. The subjects were the tenth grade students of SMA Negeri 1 Sentolo in the academic year of 2014/2015. The data for the validation process and the implementation of the teaching kits were collected through questionnaires and observations. The data of the validator assessment were analyzed using the categorization formula and Borich formula. The data on the try-out were analyzed using the paired sample test. The findings were in the form of teaching kits product for Bryophyta materials for the tenth grade students. The teaching kits had been validated theoretically by experts and teachers, the lesson plans had been validated and simulated, and the teaching kits and research instruments had been tried out in a small scale and implemented in the field. Keywords: teaching kits, Self Regulated Learning (SRL strategies PENGEMBANGAN DAN IMPLEMENTASI PERANGKAT PEMBELAJARAN BIOLOGI DENGAN STRATEGI SELF REGULATED LEARNING (SRL Abstrak: Tujuan penelitian pengembangan ini adalah dihasilkannya perangkat pembelajaran biologi berbasis Self Regulated Learningdi SMA yang telah tervalidasi dan teruji. Metode penelitian menggunakan strategi pengembangan Borg dan Gall. Subjek penelitian perangkat pembelajaran adalah siswa kelas X SMAN 1 Sentolo. Teknik pengumpulan data dalam proses validasi dan implementasi perangkat pembelajaran menggunakan angket dan observasi. Data penilaian validator dianalisis dengan rumus kategorisasi, sedang persamaan validator terhadap lembar validasi menggunakan rumus Borich. Data hasil uji coba dianalisis dengan paired sample test. Hasil penelitian berupa produk perangkat pembelajaran pada materi tumbuhan lumut di kelas X SMA. Perangkat pembelajaran tersebut telah divalidasi secara teoretis

  13. Evolution of land plant genes encoding L-Ala-D/L-Glu epimerases (AEEs) via horizontal gene transfer and positive selection

    Science.gov (United States)

    2013-01-01

    Background The L-Ala-D/L-Glu epimerases (AEEs), a subgroup of the enolase superfamily, catalyze the epimerization of L-Ala-D/L-Glu and other dipeptides in bacteria and contribute to the metabolism of the murein peptide of peptidoglycan. Although lacking in peptidoglycan, land plants possess AEE genes that show high similarity to those in bacteria. Results Similarity searches revealed that the AEE gene is ubiquitous in land plants, from bryophytas to angiosperms. However, other eukaryotes, including green and red algae, do not contain genes encoding proteins with an L-Ala-D/L-Glu_epimerase domain. Homologs of land plant AEE genes were found to only be present in prokaryotes, especially in bacteria. Phylogenetic analysis revealed that the land plant AEE genes formed a monophyletic group with some bacterial homologs. In addition, land plant AEE proteins showed the highest similarity with these bacterial homologs and shared motifs only conserved in land plant and these bacterial AEEs. Integrated information on the taxonomic distribution, phylogenetic relationships and sequence similarity of the AEE proteins revealed that the land plant AEE genes were acquired from bacteria through an ancient horizontal gene transfer (HGT) event. Further evidence revealed that land plant AEE genes had undergone positive selection and formed the main characteristics of exon/intron structures through gaining some introns during the initially evolutionary period in the ancestor of land plants. Conclusions The results of this study clearly demonstrated that the ancestor of land plants acquired an AEE gene from bacteria via an ancient HGT event. Other findings illustrated that adaptive evolution through positive selection has contributed to the functional adaptation and fixation of this gene in land plants. PMID:23452519

  14. Historical biogeography of Eastern Asian-Eastern North American disjunct Melaphidina aphids (Hemiptera: Aphididae: Eriosomatinae) on Rhus hosts (Anacardiaceae).

    Science.gov (United States)

    Ren, Zhumei; Zhong, Yang; Kurosu, Utako; Aoki, Shigeyuki; Ma, Enbo; von Dohlen, Carol D; Wen, Jun

    2013-12-01

    Intercontinental biotic disjunctions have been documented and analyzed in numerous Holarctic taxa. Patterns previously synthesized for animals compared to plants suggest that the timing of animal disjunctions are mostly Early Tertiary and were generated by migration and vicariance events occurring in the North Atlantic, while plant disjunctions are mostly Mid-Late Tertiary and imply migration and vicariance over Beringia. Melaphidina aphids (Hemiptera: Aphididae: Fordini) exhibit host-alternating life cycles comprising an obligate seasonal shift between Rhus subgenus Rhus species (Anacardiaceae) and mosses (Bryophyta). Similar to their Rhus hosts, melaphidines are distributed disjunctly between Eastern Asia and Eastern North America. We examined evolutionary relationships within Melaphidina to determine the position of the North American lineage, date its divergence from Asian relatives, and compare these results to a previous historical biogeographic study of Rhus. We sampled nine species and three subspecies representing all six genera of Melaphidina. Data included sequences of mitochondrial cytochrome c oxidase subunits I and II+leucine tRNA, cytochrome b, and nuclear elongation factor 1α genes. Phylogenetic analyses (Bayesian, maximum-likelihood, parsimony) of the combined data (3282 bp) supported the monophyly of all genera except Nurudea and Schlechtendalia, due to the position of N. ibofushi. While the exact position of the North American Melaphis was not well resolved, there was high support for a derived position within Asian taxa. The divergence of Melaphis from Asian relatives centered on the Eocene-Oligocene boundary (~33-35Ma), which coincides with closure of Beringian Land Bridge I. This also corresponded to the Asian-North American disjunction previously estimated for subgenus Rhus spp. We suggest the late-Eocene Bering Land Bridge as the most likely migration route for Melaphis ancestors, as was also hypothesized for North American Rhus ancestors

  15. Molecular evolution of glutamine synthetase II: Phylogenetic evidence of a non-endosymbiotic gene transfer event early in plant evolution

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    Tartar Aurélien

    2010-06-01

    Full Text Available Abstract Background Glutamine synthetase (GS is essential for ammonium assimilation and the biosynthesis of glutamine. The three GS gene families (GSI, GSII, and GSIII are represented in both prokaryotic and eukaryotic organisms. In this study, we examined the evolutionary relationship of GSII from eubacterial and eukaryotic lineages and present robust phylogenetic evidence that GSII was transferred from γ-Proteobacteria (Eubacteria to the Chloroplastida. Results GSII sequences were isolated from four species of green algae (Trebouxiophyceae, and additional green algal (Chlorophyceae and Prasinophytae and streptophyte (Charales, Desmidiales, Bryophyta, Marchantiophyta, Lycopodiophyta and Tracheophyta sequences were obtained from public databases. In Bayesian and maximum likelihood analyses, eubacterial (GSIIB and eukaryotic (GSIIE GSII sequences formed distinct clades. Both GSIIB and GSIIE were found in chlorophytes and early-diverging streptophytes. The GSIIB enzymes from these groups formed a well-supported sister clade with the γ-Proteobacteria, providing evidence that GSIIB in the Chloroplastida arose by horizontal gene transfer (HGT. Bayesian relaxed molecular clock analyses suggest that GSIIB and GSIIE coexisted for an extended period of time but it is unclear whether the proposed HGT happened prior to or after the divergence of the primary endosymbiotic lineages (the Archaeplastida. However, GSIIB genes have not been identified in glaucophytes or red algae, favoring the hypothesis that GSIIB was gained after the divergence of the primary endosymbiotic lineages. Duplicate copies of the GSIIB gene were present in Chlamydomonas reinhardtii, Volvox carteri f. nagariensis, and Physcomitrella patens. Both GSIIB proteins in C. reinhardtii and V. carteri f. nagariensis had N-terminal transit sequences, indicating they are targeted to the chloroplast or mitochondrion. In contrast, GSIIB proteins of P. patens lacked transit sequences, suggesting

  16. Seafloor mapping at Olkiluoto western coast of Finland

    Energy Technology Data Exchange (ETDEWEB)

    Ilmarinen, K.; Leinikki, J.; Oulasvirta, P. (Alleco Oy, Helsinki (Finland))

    2009-02-15

    The objective of the study was to investigate the seafloor of shallow areas around Olkiluoto island, western Finland. The surveys were carried out by Alleco Ltd. Posiva will use the data for modeling purposes. The investigations included bathymetric surveys, sediment sampling and assessment of benthic macrophytes and macrozoobenthos in the underwater parts of six pre-defined survey transects extending from land to the sea. Sediment sampling and the assessment of benthic organisms were done by SCUBA diving. The study area showed a great variation in environmental conditions. Olkiluoto stands between almost open sea and extremely sheltered river mouth area of Lapinjoki. Two of the transects were more than 7 meters deep and included both hard and soft sand bottom. Whereas rest of the transects were shallow with mostly soft clay, mud and silt bottom. Altogether 27 species of algae including five species of stoneworts (Charophyta), one species of water moss (Bryophyta) and 16 species of vascular plants (Tracheophyta) were found. The most abundant group was vascular plants, between the other groups of macroalgae big differences in the abundance were not seen. Furthermore altogether 43 species of macrozoobenthos (Invertebrata) were found, of which six species were sessile bottom fauna (permanently attached fauna). The most abundant groups in the bottom samples were bivalves (Lamellibranchiata) (996 individuals per m2), snails (Gastropoda) (739 individuals per m2) and polychaetes (Polychaeta) (542 individuals per m2). The total abundance of macrozoobenthos on all transects was 2 899 individuals per m2. The biggest groups by biomass were bivalves (fresh weight 87 054 mg per m2) and polychaetes (fresh weight 12 983 mg per m2). Transect 1 was the richest in number of species of the deep and exposed transects 1 and 2. The transect 5 had the highest diversity of all the shallow soft bottom transects 3, 4, 5 and 5a. The high diversity of the transect 1 and 5 may be explained by

  17. Diversity and primary productivity of hill beech forests from Doftana Valley (Romanian Subcarpathians

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    Mihaela Paucã-Comãnescu

    2009-11-01

    Full Text Available The hill beech forests cover most of the woody area in the Doftana Valley. The present study refers, for the first time, to two beech forests typical to this belt, which belong to the phytocoenological associations Epipactieto-Fagetum (Resmeritã,1972, in the Lunca Mare area, and Hieracio rotundati-Fagetum (Vida 1983, Täuber 1987 in the Sotrile area, from floristic, structural, biomass and necromassaccumulation point of view, within the framework of the vertical structure of biocoenosis.The limestone substratum, occasionally with small outcrops in the first beech forest, differs chiefly through the pH levels (6.34-5.67 from the siliceous substratum (pH 5.11-4.36 in the second beech forest. The layer of trees is dominated by Fagus sylvatica in both forests; this species is associated with Cerasus avium (4.5%,Acer pseudoplatanus (2% and Sorbus torminalis (2% in the first beech forest, and is monodominant in the second. Although the forest underwent selective cuts, more intense in the Lunca Mare area, the aboveground ligneous biomass reaches nowadays 222 t/ha in the Lunca Mare area compared to only 163 t/ha in the Sotrile area; theaverage height is 28.8±2.49 m and 23.7±1.12 m, respectively, and the diameter is 33.30±7.9 cm and 31.60±6.28 cm, respectively. The species of macrofungi, not very numerous during the study because of scarce precipitations (6 and 7 species, respectively,are predominant on the rhytidoma trees in the beech forest rooted on the limestone ground; in the Sotrile beech forest they are joined by mycorrhizal and parasite species. The layer of shrub is underdeveloped. The herbaceous layer is discontinuous, and includes, along herbs, small plants and saplings belonging to the ligneous species and to liana Hedera helix. The maximal value of the aboveground biomass of thelayer is 317 kg/ha DM in the Lunca Mare area and 235 kg /ha DM in the Sotrile area.Bryophyta is present in large quantities, especially in the ªotrile area

  18. Diversity and primary productivity of hill beech forests from Doftana Valley (Romanian Subcarpathians

    Directory of Open Access Journals (Sweden)

    Mihaela Paucã-Comãnescu

    2009-12-01

    Full Text Available The hill beech forests cover most of the woody area in the Doftana Valley. The present study refers, for the first time, to two beech forests typical to this belt, which belong to the phytocoenological associations Epipactieto-Fagetum (Resmeriţă, 1972, in the Lunca Mare area, and Hieracio rotundati-Fagetum (Vida 1983, Täuber 1987 in the Sotrile area, from floristic, structural, biomass and necromass accumulation point of view, within the framework of the vertical structure of biocoenosis. The limestone substratum, occasionally with small outcrops in the first beech forest, differs chiefly through the pH levels (6.34-5.67 from the siliceous substratum (pH 5.11-4.36 in the second beech forest. The layer of trees is dominated by Fagus sylvatica in both forests; this species is associated with Cerasus avium (4.5%, Acer pseudoplatanus (2% and Sorbus torminalis (2% in the first beech forest, and is monodominant in the second. Although the forest underwent selective cuts, more intense in the Lunca Mare area, the aboveground ligneous biomass reaches nowadays 222 t/ha in the Lunca Mare area compared to only 163 t/ha in the Sotrile area; the average height is 28.8ą2.49 m and 23.7ą1.12 m, respectively, and the diameter is 33.30ą7.9 cm and 31.60ą6.28 cm, respectively. The species of macrofungi, not very numerous during the study because of scarce precipitations (6 and 7 species, respectively, are predominant on the rhytidoma trees in the beech forest rooted on the limestone ground; in the Sotrile beech forest they are joined by mycorrhizal and parasite species. The layer of shrub is underdeveloped. The herbaceous layer is discontinuous, and includes, along herbs, small plants and saplings belonging to the ligneous species and to liana Hedera helix. The maximal value of the aboveground biomass of the layer is 317 kg/ha DM in the Lunca Mare area and 235 kg /ha DM in the Sotrile area. Bryophyta is present in large quantities, especially in the Sotrile

  19. Programa de Pós-Graduação em Geologia - 2003 - Teses Defendidas - Doutorado - Instituto de Geociências, UFRJ

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    2003-01-01

    vegetação no holoceno da região norte do estado do Rio de Janeiro (Brasil - 167 p. A investigação da dinâmica da vegetação do norte do Estado do Rio de Janeiro nos últimos 7.000 amos baseou-se nos resultados obtidos pelas análises palinológicas de (1 sedimentos superficiais do fundo de duas lagoas situadas no município de Campos dos Goytacazes, (2 sedimentos recentes de solos periféricos a estas lagoas e (3 sedimentos de dois testemunhos, um coletado na Lagoa de Cima e um na Lagoa do Campelo. Foram considerados como palinomorfos os grãos de pólen, os esporos de Pteridophyta e Bryophyta, zigósporos e cenóbios de algas verdes. De acordo com os resultados obtidos foram caracterizados: 1. A dinâmica espacial na deposição recente de palinomorfos na superfície de fundo das lagoas. Foram analisadas 15 amostras de um transect de direção nordeste/sudoeste pela Lagoa de Cima. Os grãos de pólen em sua maioria refletiram a floresta que beira a lagoa e os afluentes Imbé e Urubu, com contribuição expressiva dos taxa regionais, bem como a importante contribuição de plantas hidrófitas e palustres e de plantas ruderais das vastas pastagens encontradas na área. Indicaram que na atualidade a tendência deposicional dos palinomorfos na Lagoa de Cima está condicionada pelos influxos dos rios Imbé e Urubu ocasionando uma diferenciação espacial na sedimentação conforme o tamanho dos palinomorfos, a proximidade do local de sedimentação em relação a desembocadura desses rios e a batimetria do leito da lagoa. Já na Lagoa do Campelo as 4 amostras de superfície de fundo, também retiradas na direção nordeste/sudoeste, revelaram um padrão diferenciado de deposição dos palinomorfos em relação à Lagoa de Cima. A análise palinológica revelou alta deposição de pólen de plantas hidrófitas e palustres. Os tipos arbóreos e arbustivos devem ter sua "área-fonte" de pólen em um pequeno fragmento florestal contíguo à borda nordeste da lagoa. Os