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Registro Completo |
Biblioteca(s): |
Embrapa Pantanal. |
Data corrente: |
30/06/2015 |
Data da última atualização: |
10/05/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MARTINS, C. de A.; ROQUE, F. de O.; SANTOS, B. A.; FERREIRA, V. L.; STRUSSMANN, C.; TOMAS, W. M. |
Afiliação: |
CLARISSA DE ARAÚJO MARTINS, UFMS; FÁBIO DE OLIVEIRA ROQUE, UFMS; BRÁULIO A. SANTOS, UFPB; VANDA LÚCIA FERREIRA, UFMS; CHRISTINE STRUSSMANN, UFMT; WALFRIDO MORAES TOMAS, CPAP. |
Título: |
What shapes the phylogenetic structure of anuran communities in a seasonal environment? The influence of determinism at regional scale to stochasticity or antagonistic forces at local scale. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Plos One, v. 10, n. 6, p. 1-14, 2015. |
ISSN: |
1932-6203 |
DOI: |
10.1371/journal.pone.0130075 |
Idioma: |
Inglês |
Conteúdo: |
Ecological communities are structured by both deterministic and stochastic processes. We investigated phylogenetic patterns at regional and local scales to understand the influences of seasonal processes in shaping the structure of anuran communities in the southern Pantanal wetland, Brazil. We assessed the phylogenetic structure at different scales, using the Net Relatedness Index (NRI), the Nearest Taxon Index (NTI), and hylobetadiversity indexes, as well as a permutation test, to evaluate the effect of seasonality. The anuran community was represented by a non-random set of species with a high degree of phylogenetic relatedness at the regional scale. However, at the local scale the phylogenetic structure of the community was weakly related with the seasonality of the system, indicating that oriented stochastic processes (e.g. colonization, extinction and ecological drift) and/or antagonist forces drive the structure of such communities in the southern Pantanal. |
Palavras-Chave: |
Biological diversity; Seasonality; Southern Pantanal. |
Thesagro: |
Biodiversidade. |
Thesaurus Nal: |
Biogeography; Community ecology. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/131686/1/journal.pone.0130075-anuros-nhecolandia.pdf
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Marc: |
LEADER 01856naa a2200277 a 4500 001 2018918 005 2018-05-10 008 2015 bl uuuu u00u1 u #d 022 $a1932-6203 024 7 $a10.1371/journal.pone.0130075$2DOI 100 1 $aMARTINS, C. de A. 245 $aWhat shapes the phylogenetic structure of anuran communities in a seasonal environment? The influence of determinism at regional scale to stochasticity or antagonistic forces at local scale. 260 $c2015 520 $aEcological communities are structured by both deterministic and stochastic processes. We investigated phylogenetic patterns at regional and local scales to understand the influences of seasonal processes in shaping the structure of anuran communities in the southern Pantanal wetland, Brazil. We assessed the phylogenetic structure at different scales, using the Net Relatedness Index (NRI), the Nearest Taxon Index (NTI), and hylobetadiversity indexes, as well as a permutation test, to evaluate the effect of seasonality. The anuran community was represented by a non-random set of species with a high degree of phylogenetic relatedness at the regional scale. However, at the local scale the phylogenetic structure of the community was weakly related with the seasonality of the system, indicating that oriented stochastic processes (e.g. colonization, extinction and ecological drift) and/or antagonist forces drive the structure of such communities in the southern Pantanal. 650 $aBiogeography 650 $aCommunity ecology 650 $aBiodiversidade 653 $aBiological diversity 653 $aSeasonality 653 $aSouthern Pantanal 700 1 $aROQUE, F. de O. 700 1 $aSANTOS, B. A. 700 1 $aFERREIRA, V. L. 700 1 $aSTRUSSMANN, C. 700 1 $aTOMAS, W. M. 773 $tPlos One$gv. 10, n. 6, p. 1-14, 2015.
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Embrapa Pantanal (CPAP) |
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Registro Completo
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
10/02/2014 |
Data da última atualização: |
26/05/2014 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
FAGERIA, N. K.; BALIGAR, V. C.; LI, Y. C. |
Afiliação: |
NAND KUMAR FAGERIA, CNPAF; V. C. BALIGAR, USDA; Y. C. LI, UNIVERSITY OF FLORIDA. |
Título: |
Nutrient uptake and use efficiency by tropical legume cover crops at varying pH of an oxisol. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Journal of Plant Nutrition, New York, v. 37, n. 2, p. 294-311, Feb. 2014. |
DOI: |
10.1080/01904167.2013.851695 |
Idioma: |
Inglês |
Conteúdo: |
Oxisols comprise large soil group in tropical America. These soils are acidic and have low fertility. Use of tropical legume cover crops in cropping systems is an important strategy to improve fertility of these soils for sustainable crop production. Data are limited on nutrient uptake and use efficiency of tropical cover crops under different acidity levels. The objective of our study was to evaluate growth and nutrient uptake parameters of sixteen tropical legume cover crops under three soil pH (5.1, 6.5, and 7.0) of an Oxisol. Shoot dry weight was influenced significantly by pH and cover crop treatments and their interactions, indicating that cover crops used had differential responses to changing soil pH levels. Overall, shoot dry weight decreased when soil pH was raised from 5.1 to 7.0, indicating acidity tolerance of cover crops. Nutrient concentration (content per unit of dry weight), uptake (concentration X dry weight), and nutrient use efficiency (dry weight of shoot per unit of nutrient uptake) varied significantly among cover crops. The variation in nutrient uptake and use efficiency among cover crop species was associated with variation in shoot dry matter production. Significant variation among crop species in dry matter production and low C/N ratios (average value of 14.25) suggest that cover crops which produced higher dry matter yield like white jack bean, gray mucuna bean, black mucuna bean, mucuna bean ana, and lablab are important choices for planting in tropical soils to recover large amount of macro and micronutrients, and to prevent such nutrient leaching in soil plant systems. MenosOxisols comprise large soil group in tropical America. These soils are acidic and have low fertility. Use of tropical legume cover crops in cropping systems is an important strategy to improve fertility of these soils for sustainable crop production. Data are limited on nutrient uptake and use efficiency of tropical cover crops under different acidity levels. The objective of our study was to evaluate growth and nutrient uptake parameters of sixteen tropical legume cover crops under three soil pH (5.1, 6.5, and 7.0) of an Oxisol. Shoot dry weight was influenced significantly by pH and cover crop treatments and their interactions, indicating that cover crops used had differential responses to changing soil pH levels. Overall, shoot dry weight decreased when soil pH was raised from 5.1 to 7.0, indicating acidity tolerance of cover crops. Nutrient concentration (content per unit of dry weight), uptake (concentration X dry weight), and nutrient use efficiency (dry weight of shoot per unit of nutrient uptake) varied significantly among cover crops. The variation in nutrient uptake and use efficiency among cover crop species was associated with variation in shoot dry matter production. Significant variation among crop species in dry matter production and low C/N ratios (average value of 14.25) suggest that cover crops which produced higher dry matter yield like white jack bean, gray mucuna bean, black mucuna bean, mucuna bean ana, and lablab are important choices for planting in t... Mostrar Tudo |
Palavras-Chave: |
Ssitema de cultivo. |
Thesagro: |
Absorção de nutrientes; Planta de cobertura. |
Thesaurus NAL: |
cover crops; Cropping systems; Nutrient uptake; Soil pH. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02376naa a2200241 a 4500 001 1979244 005 2014-05-26 008 2014 bl uuuu u00u1 u #d 024 7 $a10.1080/01904167.2013.851695$2DOI 100 1 $aFAGERIA, N. K. 245 $aNutrient uptake and use efficiency by tropical legume cover crops at varying pH of an oxisol.$h[electronic resource] 260 $c2014 520 $aOxisols comprise large soil group in tropical America. These soils are acidic and have low fertility. Use of tropical legume cover crops in cropping systems is an important strategy to improve fertility of these soils for sustainable crop production. Data are limited on nutrient uptake and use efficiency of tropical cover crops under different acidity levels. The objective of our study was to evaluate growth and nutrient uptake parameters of sixteen tropical legume cover crops under three soil pH (5.1, 6.5, and 7.0) of an Oxisol. Shoot dry weight was influenced significantly by pH and cover crop treatments and their interactions, indicating that cover crops used had differential responses to changing soil pH levels. Overall, shoot dry weight decreased when soil pH was raised from 5.1 to 7.0, indicating acidity tolerance of cover crops. Nutrient concentration (content per unit of dry weight), uptake (concentration X dry weight), and nutrient use efficiency (dry weight of shoot per unit of nutrient uptake) varied significantly among cover crops. The variation in nutrient uptake and use efficiency among cover crop species was associated with variation in shoot dry matter production. Significant variation among crop species in dry matter production and low C/N ratios (average value of 14.25) suggest that cover crops which produced higher dry matter yield like white jack bean, gray mucuna bean, black mucuna bean, mucuna bean ana, and lablab are important choices for planting in tropical soils to recover large amount of macro and micronutrients, and to prevent such nutrient leaching in soil plant systems. 650 $acover crops 650 $aCropping systems 650 $aNutrient uptake 650 $aSoil pH 650 $aAbsorção de nutrientes 650 $aPlanta de cobertura 653 $aSsitema de cultivo 700 1 $aBALIGAR, V. C. 700 1 $aLI, Y. C. 773 $tJournal of Plant Nutrition, New York$gv. 37, n. 2, p. 294-311, Feb. 2014.
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