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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Tabuleiros Costeiros. |
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Data corrente: |
02/12/2014 |
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Data da última atualização: |
02/12/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LISBOA, F. J. G.; CHAER, G. M.; FERNANDES, M. F.; BERBARA, R. L. L.; MADARI, B. E. |
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Afiliação: |
GUILHERME MONTANDON CHAER, CNPAB; MARCELO FERREIRA FERNANDES, CPATC. |
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Título: |
The match between microbial community structure and soil properties is modulated by land use types and sample origin within an integrated agroecosystem. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Soil Biology & Biochemistry, Oxford, v. 78, p. 97-108, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
It is of global concern to adopt measures to mitigate land degradation caused by agricultural production systems. One of the strategies proposed is to replace degraded pastures with agrosilvopastoral systems which integrate three different land-use types: crop production, livestock pasture and forestry plantation (denoted iCLF). However, little is known about the differences between iCLF and other land use types in terms of soil microbial community structure. Distance matrices based on individual soil chemical properties and individual soil microbial variables were correlated by Procrustes analysis and these re-lationships yielded vectors of residuals depicting these correlations (matches). These vectors were used as univariate response variables in an ANOVA framework in order to investigate how the match sizes (the strength of correlation/covariance) between individual soil chemical properties and individual soil mi-crobial variables vary across land use types (levels: iCLF; degradated pasture; improved pasture; and a native cerrado fragment) and also across sample origin within iCLF (levels: soil samples under morein fluence of the exotic tree forest stand; soil samples under influence of the pasture; samples within the transition between the forest stand and the pasture). We were able to obtain insights into the fact that the land use distinction can be driven by more than just individual soil chemical and microbial variables. The integration of crop, livestock and forestry promoted a dominance of fungi in this low fertility and low pH environment. P availability and the composite variable exchangeable base cations (Caþ2, Mgþ2, Kþ) were the soil properties whose strengths of correlation (match sizes) with individual microbial variables were the most affected by land use type and sampling origin within iCLF. While the strength of the correlation between soil microbial structure variables and P availability was typically land use type dependent, the response of the microbial structure to exchangeable base cations was mainly affected by the sample origin within iCLF. Finally our results point towards the conclusion that increases in the heterogeneity of vegetation within integrated crop, pasture and forestry systems are an important driver of microbial community response to environmental changes, and may be one means by which to in-crease the sustainability of tropical agroecosystems. MenosIt is of global concern to adopt measures to mitigate land degradation caused by agricultural production systems. One of the strategies proposed is to replace degraded pastures with agrosilvopastoral systems which integrate three different land-use types: crop production, livestock pasture and forestry plantation (denoted iCLF). However, little is known about the differences between iCLF and other land use types in terms of soil microbial community structure. Distance matrices based on individual soil chemical properties and individual soil microbial variables were correlated by Procrustes analysis and these re-lationships yielded vectors of residuals depicting these correlations (matches). These vectors were used as univariate response variables in an ANOVA framework in order to investigate how the match sizes (the strength of correlation/covariance) between individual soil chemical properties and individual soil mi-crobial variables vary across land use types (levels: iCLF; degradated pasture; improved pasture; and a native cerrado fragment) and also across sample origin within iCLF (levels: soil samples under morein fluence of the exotic tree forest stand; soil samples under influence of the pasture; samples within the transition between the forest stand and the pasture). We were able to obtain insights into the fact that the land use distinction can be driven by more than just individual soil chemical and microbial variables. The integration of crop, livestock and forest... Mostrar Tudo |
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Palavras-Chave: |
Degradação. |
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Thesagro: |
Sistema de Produção; Solo. |
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Thesaurus Nal: |
degradation; soil. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/112859/1/Lisboa-et-al.-2014b.pdf
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Marc: |
LEADER 03132naa a2200229 a 4500
001 2001356
005 2014-12-02
008 2014 bl uuuu u00u1 u #d
100 1 $aLISBOA, F. J. G.
245 $aThe match between microbial community structure and soil properties is modulated by land use types and sample origin within an integrated agroecosystem.
260 $c2014
520 $aIt is of global concern to adopt measures to mitigate land degradation caused by agricultural production systems. One of the strategies proposed is to replace degraded pastures with agrosilvopastoral systems which integrate three different land-use types: crop production, livestock pasture and forestry plantation (denoted iCLF). However, little is known about the differences between iCLF and other land use types in terms of soil microbial community structure. Distance matrices based on individual soil chemical properties and individual soil microbial variables were correlated by Procrustes analysis and these re-lationships yielded vectors of residuals depicting these correlations (matches). These vectors were used as univariate response variables in an ANOVA framework in order to investigate how the match sizes (the strength of correlation/covariance) between individual soil chemical properties and individual soil mi-crobial variables vary across land use types (levels: iCLF; degradated pasture; improved pasture; and a native cerrado fragment) and also across sample origin within iCLF (levels: soil samples under morein fluence of the exotic tree forest stand; soil samples under influence of the pasture; samples within the transition between the forest stand and the pasture). We were able to obtain insights into the fact that the land use distinction can be driven by more than just individual soil chemical and microbial variables. The integration of crop, livestock and forestry promoted a dominance of fungi in this low fertility and low pH environment. P availability and the composite variable exchangeable base cations (Caþ2, Mgþ2, Kþ) were the soil properties whose strengths of correlation (match sizes) with individual microbial variables were the most affected by land use type and sampling origin within iCLF. While the strength of the correlation between soil microbial structure variables and P availability was typically land use type dependent, the response of the microbial structure to exchangeable base cations was mainly affected by the sample origin within iCLF. Finally our results point towards the conclusion that increases in the heterogeneity of vegetation within integrated crop, pasture and forestry systems are an important driver of microbial community response to environmental changes, and may be one means by which to in-crease the sustainability of tropical agroecosystems.
650 $adegradation
650 $asoil
650 $aSistema de Produção
650 $aSolo
653 $aDegradação
700 1 $aCHAER, G. M.
700 1 $aFERNANDES, M. F.
700 1 $aBERBARA, R. L. L.
700 1 $aMADARI, B. E.
773 $tSoil Biology & Biochemistry, Oxford$gv. 78, p. 97-108, 2014.
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Registro original: |
Embrapa Tabuleiros Costeiros (CPATC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Unidades Centrais. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
17/06/1997 |
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Data da última atualização: |
17/06/1997 |
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Autoria: |
BELLAVER, C.; GUIDONI, A. L.; ALBINO, L. F. T.; PIENIZ, L. C. |
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Afiliação: |
CNPSA. |
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Título: |
Fontes e niveis de fosfatos de rocha sobre o desempenho de frangos de corte. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.22, n.9/10, p.1085-1091, set./out.1987. |
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Idioma: |
Português |
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Conteúdo: |
Foi conduzido um experimento com frangos de corte, nas fases inicial (7 - 28 dias) final (28 - 49 dias) e total (7 - 49 dias), testando tres rochas fosfaticas (patos, goias e tapira) em relacao ao fosfato bicalcico. Para cada fonte, as dietas foram calculadas para ter 0%; 0,15%; 0,30% ou 0,45% de fosforo (P) suplementar, mantendo-se constante a relacao Ca: P, sendo elas isoproteicas e isoenergeticas. Os pintos foram alojados em baterias com aquecimento eletrico, tendo dez aves por parcela. O delineamento utilizado foi o inteiramente casualizado. As variaveis estudadas foram: ganho de peso total (GPT), conversao alimentar (CA), percentagem de cinza na tibia (CT) percentagem de fosforo na tibia (PT) e fosforo no plasma sanguineo (PP). Constatou-se inferioridade(P<0,05) do fosfato goias em relacao aos demais, nao havendo diferencas significativas (P>0,05) entre estes. O fosfato goias piorou o desempenho a medida que foi incluido na racao. A estimativa de P disponivel, baseada na CT, situou-se entre 54% e 76% para os fosfatos patos e tapira. Concluiu-se que houve similaridade no desempenho entre as aves que receberam os fosfatos bicalcico, patos e tapira, e que o goias piorou o desempenho a medida que foi incluido na racao. |
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Palavras-Chave: |
Ave; Biodisponibilidade do fosforo; Fowl; Phosphorus bioavaibility; Rocha fosfatica; Rocks phosphate. |
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Thesagro: |
Flúor; Fósforo. |
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Thesaurus NAL: |
fluorine; phosphorus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02013naa a2200277 a 4500
001 1090754
005 1997-06-17
008 1987 bl uuuu u00u1 u #d
100 1 $aBELLAVER, C.
245 $aFontes e niveis de fosfatos de rocha sobre o desempenho de frangos de corte.
260 $c1987
520 $aFoi conduzido um experimento com frangos de corte, nas fases inicial (7 - 28 dias) final (28 - 49 dias) e total (7 - 49 dias), testando tres rochas fosfaticas (patos, goias e tapira) em relacao ao fosfato bicalcico. Para cada fonte, as dietas foram calculadas para ter 0%; 0,15%; 0,30% ou 0,45% de fosforo (P) suplementar, mantendo-se constante a relacao Ca: P, sendo elas isoproteicas e isoenergeticas. Os pintos foram alojados em baterias com aquecimento eletrico, tendo dez aves por parcela. O delineamento utilizado foi o inteiramente casualizado. As variaveis estudadas foram: ganho de peso total (GPT), conversao alimentar (CA), percentagem de cinza na tibia (CT) percentagem de fosforo na tibia (PT) e fosforo no plasma sanguineo (PP). Constatou-se inferioridade(P<0,05) do fosfato goias em relacao aos demais, nao havendo diferencas significativas (P>0,05) entre estes. O fosfato goias piorou o desempenho a medida que foi incluido na racao. A estimativa de P disponivel, baseada na CT, situou-se entre 54% e 76% para os fosfatos patos e tapira. Concluiu-se que houve similaridade no desempenho entre as aves que receberam os fosfatos bicalcico, patos e tapira, e que o goias piorou o desempenho a medida que foi incluido na racao.
650 $afluorine
650 $aphosphorus
650 $aFlúor
650 $aFósforo
653 $aAve
653 $aBiodisponibilidade do fosforo
653 $aFowl
653 $aPhosphorus bioavaibility
653 $aRocha fosfatica
653 $aRocks phosphate
700 1 $aGUIDONI, A. L.
700 1 $aALBINO, L. F. T.
700 1 $aPIENIZ, L. C.
773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.22, n.9/10, p.1085-1091, set./out.1987.
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