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Registro Completo |
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Biblioteca(s): |
Embrapa Algodão. |
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Data corrente: |
29/09/2009 |
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Data da última atualização: |
03/10/2009 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
VIDAL NETO, F. das C.; CARVALHO, L. P. de; ANDRADE, F. P. de; SANTOS, J. W. dos; SOUZA, S. L. de; ARAÚJO, G. P. de. |
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Afiliação: |
Francisco das Chagas Vidal Neto, Embrapa Agroindústria Tropical; Luis Paulo de Carvalho, CNPA; Francisco Pereira de Andrade, CNPA; José Wellington dos Santos, CNPA; Sebastião Lemos de Souza, CNPA; Gildo Pereira de Araújo, CNPA. |
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Título: |
Ensaio de valor de cultivo e uso (VCU 2008), do programa de melhoramento da Embrapa no Nordeste. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DO ALGODÃO, 7., 2009, Foz do Iguaçu. Sustentabilidade da cotonicultura brasileira e expansão dos mercados: anais. Campina Grande: Embrapa Algodão, 2009. |
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Descrição Física: |
1 CD-ROM |
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ISSN: |
2175-2311 |
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Idioma: |
Português |
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Palavras-Chave: |
Características da fibra; Linhagens de algodão; Produtividade do algodão. |
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Categoria do assunto: |
-- |
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URL: |
https://www.cnpa.embrapa.br/produtos/algodao/publicacoes/cba7/TRABALHO_37.pdf
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Marc: |
LEADER 00834naa a2200229 a 4500
001 1512633
005 2009-10-03
008 2009 bl uuuu u00u1 u #d
022 $a2175-2311
100 1 $aVIDAL NETO, F. das C.
245 $aEnsaio de valor de cultivo e uso (VCU 2008), do programa de melhoramento da Embrapa no Nordeste.
260 $c2009
300 $c1 CD-ROM
653 $aCaracterísticas da fibra
653 $aLinhagens de algodão
653 $aProdutividade do algodão
700 1 $aCARVALHO, L. P. de
700 1 $aANDRADE, F. P. de
700 1 $aSANTOS, J. W. dos
700 1 $aSOUZA, S. L. de
700 1 $aARAÚJO, G. P. de
773 $tIn: CONGRESSO BRASILEIRO DO ALGODÃO, 7., 2009, Foz do Iguaçu. Sustentabilidade da cotonicultura brasileira e expansão dos mercados: anais. Campina Grande: Embrapa Algodão, 2009.
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Registro original: |
Embrapa Algodão (CNPA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
27/02/2008 |
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Data da última atualização: |
23/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
DAVIDSON, E. A.; CARVALHO, C. J. R. de; FIGUEIRA, A. M.; ISHIDA, F. Y.; OMETTO, J. P. H. B.; NARDOTO, G. B.; SABÁ, R. T.; HAYASHI, S. N.; LEAL, E. C.; VIEIRA, I. C. G.; MARTINELLI, L. A. |
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Afiliação: |
Eric A. Davidson, The Woods Hole Research Center; CLAUDIO JOSE REIS DE CARVALHO, CPATU; Adelaine Michela Figueira, CENA; Françoise Yoko Ishida, CENA; Jean Pierre H. B. Ometto, CENA; Gabriela B. Nardoto, CENA; Renata Tuma Sabá, bolsista CPATU; Sanae N. Hayashi, MPEG; Eliane C. Leal, MPEG; Ima Célia G. Vieira, MPEG; Luiz A. Martinelli, CENA. |
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Título: |
Recuperation of nitrogen cycling in Amazonian forests following agricultural abandonment. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Nature, v. 447, n. 7147, p. 995-998, Jun. 2007. |
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DOI: |
10.1038/nature05900 |
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Idioma: |
Português |
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Notas: |
Disponível também on-line. |
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Conteúdo: |
Phosphorus (P) is generally considered the most common limiting nutrient for productivity of mature tropical lowland forests growing on highly weathered soils1, 2, 3, 4, 5. It is often assumed that P limitation also applies to young tropical forests, but nitrogen (N) losses during land-use change may alter the stoichiometric balance of nutrient cycling processes. In the Amazon basin, about 16% of the original forest area has been cleared6, and about 30?50% of cleared land is estimated now to be in some stage of secondary forest succession following agricultural abandonment7. Here we use forest age chronosequences to demonstrate that young successional forests growing after agricultural abandonment on highly weathered lowland tropical soils exhibit conservative N-cycling properties much like those of N-limited forests on younger soils in temperate latitudes. As secondary succession progresses, N-cycling properties recover and the dominance of a conservative P cycle typical of mature lowland tropical forests re-emerges. These successional shifts in N:P cycling ratios with forest age provide a mechanistic explanation for initially lower and then gradually increasing soil emissions of the greenhouse gas nitrous oxide (N2O). The patterns of N and P cycling during secondary forest succession, demonstrated here over decadal timescales, are similar to N- and P-cycling patterns during primary succession as soils age over thousands and millions of years, thus revealing that N availability in terrestrial ecosystems is ephemeral and can be disrupted by either natural or anthropogenic disturbances at several timescales. MenosPhosphorus (P) is generally considered the most common limiting nutrient for productivity of mature tropical lowland forests growing on highly weathered soils1, 2, 3, 4, 5. It is often assumed that P limitation also applies to young tropical forests, but nitrogen (N) losses during land-use change may alter the stoichiometric balance of nutrient cycling processes. In the Amazon basin, about 16% of the original forest area has been cleared6, and about 30?50% of cleared land is estimated now to be in some stage of secondary forest succession following agricultural abandonment7. Here we use forest age chronosequences to demonstrate that young successional forests growing after agricultural abandonment on highly weathered lowland tropical soils exhibit conservative N-cycling properties much like those of N-limited forests on younger soils in temperate latitudes. As secondary succession progresses, N-cycling properties recover and the dominance of a conservative P cycle typical of mature lowland tropical forests re-emerges. These successional shifts in N:P cycling ratios with forest age provide a mechanistic explanation for initially lower and then gradually increasing soil emissions of the greenhouse gas nitrous oxide (N2O). The patterns of N and P cycling during secondary forest succession, demonstrated here over decadal timescales, are similar to N- and P-cycling patterns during primary succession as soils age over thousands and millions of years, thus revealing that N availabi... Mostrar Tudo |
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Palavras-Chave: |
Brasil. |
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Thesagro: |
Agricultura; Floresta; Nitrogênio. |
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Thesaurus NAL: |
Amazonia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02556naa a2200325 a 4500
001 1409000
005 2022-11-23
008 2007 bl uuuu u00u1 u #d
024 7 $a10.1038/nature05900$2DOI
100 1 $aDAVIDSON, E. A.
245 $aRecuperation of nitrogen cycling in Amazonian forests following agricultural abandonment.$h[electronic resource]
260 $c2007
500 $aDisponível também on-line.
520 $aPhosphorus (P) is generally considered the most common limiting nutrient for productivity of mature tropical lowland forests growing on highly weathered soils1, 2, 3, 4, 5. It is often assumed that P limitation also applies to young tropical forests, but nitrogen (N) losses during land-use change may alter the stoichiometric balance of nutrient cycling processes. In the Amazon basin, about 16% of the original forest area has been cleared6, and about 30?50% of cleared land is estimated now to be in some stage of secondary forest succession following agricultural abandonment7. Here we use forest age chronosequences to demonstrate that young successional forests growing after agricultural abandonment on highly weathered lowland tropical soils exhibit conservative N-cycling properties much like those of N-limited forests on younger soils in temperate latitudes. As secondary succession progresses, N-cycling properties recover and the dominance of a conservative P cycle typical of mature lowland tropical forests re-emerges. These successional shifts in N:P cycling ratios with forest age provide a mechanistic explanation for initially lower and then gradually increasing soil emissions of the greenhouse gas nitrous oxide (N2O). The patterns of N and P cycling during secondary forest succession, demonstrated here over decadal timescales, are similar to N- and P-cycling patterns during primary succession as soils age over thousands and millions of years, thus revealing that N availability in terrestrial ecosystems is ephemeral and can be disrupted by either natural or anthropogenic disturbances at several timescales.
650 $aAmazonia
650 $aAgricultura
650 $aFloresta
650 $aNitrogênio
653 $aBrasil
700 1 $aCARVALHO, C. J. R. de
700 1 $aFIGUEIRA, A. M.
700 1 $aISHIDA, F. Y.
700 1 $aOMETTO, J. P. H. B.
700 1 $aNARDOTO, G. B.
700 1 $aSABÁ, R. T.
700 1 $aHAYASHI, S. N.
700 1 $aLEAL, E. C.
700 1 $aVIEIRA, I. C. G.
700 1 $aMARTINELLI, L. A.
773 $tNature$gv. 447, n. 7147, p. 995-998, Jun. 2007.
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