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Registro Completo |
Biblioteca(s): |
Embrapa Algodão. |
Data corrente: |
15/02/2011 |
Data da última atualização: |
15/02/2011 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
PORTO, M. S.; MILANI, M.; ANDRADE, F. P. de; NOBREGA, M. B. de M. |
Afiliação: |
MAIRA MILANI, CNPA; FRANCISCO PEREIRA DE ANDRADE, CNPA; MARCIA BARRETO DE MEDEIROS NOBREGA, CNPA. |
Título: |
Avaliação de efeitos da autofecundação em genótipos de mamona do banco ativo de germoplasma da Embrapa. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
In: ENCONTRO DE PRODUÇÃO CIENTÍFICA DA EMBRAPA ALGODÃO - EPC 2010, 5., 2010, Campina Grande. [Resumos...]. Campina Grande: Embrapa Algodão, 2010. |
Páginas: |
p. 17 |
ISSN: |
0103-0205 |
Idioma: |
Português |
Palavras-Chave: |
Depressão endogâmica; Homozigose. |
Thesagro: |
Mamona; Ricinus Communis. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00732naa a2200217 a 4500 001 1877324 005 2011-02-15 008 2010 bl uuuu u00u1 u #d 022 $a0103-0205 100 1 $aPORTO, M. S. 245 $aAvaliação de efeitos da autofecundação em genótipos de mamona do banco ativo de germoplasma da Embrapa. 260 $c2010 300 $ap. 17 650 $aMamona 650 $aRicinus Communis 653 $aDepressão endogâmica 653 $aHomozigose 700 1 $aMILANI, M. 700 1 $aANDRADE, F. P. de 700 1 $aNOBREGA, M. B. de M. 773 $tIn: ENCONTRO DE PRODUÇÃO CIENTÍFICA DA EMBRAPA ALGODÃO - EPC 2010, 5., 2010, Campina Grande. [Resumos...]. Campina Grande: Embrapa Algodão, 2010.
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Embrapa Algodão (CNPA) |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
21/08/2006 |
Data da última atualização: |
28/04/2022 |
Autoria: |
PHILLIPS, O. L.; BAKER, T. R.; ARROYO, L.; HIGUCHI, N.; KILLEEN, T. J.; LAURENCE, W. F.; LEWIS, S. L.; LLOYD, J.; MALHI, Y.; MONTEAGUDO, A.; NEILL, D. A.; VARGAS, P. N.; SILVA, J. N. M.; TERBORGH, J.; MARTÍNEZ, R. V.; ALEXIADES, M.; ALMEIDA, S.; BROWN, S.; CHAVES, J.; COMISKEY, J. A.; CZIMCZIK, C. I.; DI FIORE, A.; ERWIN, T.; KUEBLER, C.; LAURANCE, S. G.; NASCIMENTO, H. E. M.; OLIVIER, J.; PALACIOS, W.; PATIÑO, S.; PITMAN, N. C. A.; QUESADA, C. A.; SALDIAS, M.; LEZAMA, A. T.; VINCETI, B. |
Afiliação: |
JOSÉ NATALINO MACEDO SILVA, CPATU. |
Título: |
Pattern and process in Amazon tree turnover, 1976-2001. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
Philippine Transactions of Royal Society of London. B, v. 359, n. 1443, p. 381-407, 2004. |
Idioma: |
Inglês |
Conteúdo: |
Previous work has shown that tree turnover, tree biomass and large liana densities have increased in mature tropical forest plots in the late twentieth century. These results point to a concerted shift in forest ecological processes that may already be having significant impacts on terrestrial carbon stocks, fluxes and biodiversity. However, the findings have proved controversial, partly because a rather limited number of permanent plots have been monitored for rather short periods. The aim of this paper is to characterize regional-scale patterns of 'tree turnover' (the rate with which trees die and recruit into a population) by using improved datasets now available for Amazonia that span the past 25 years. Specifically, we assess whether concerted changes in turnover are occurring, and if so whether they are general throughout the Amazon or restricted to one region or environmental zone. In addition, we ask whether they are driven by changes in recruitment, mortality or both. We find that: (i) trees 10 cm or more in diameter recruit and die twice as fast on the richer soils of southern and western Amazonia than on the poorer soils of eastern and central Amazonia; (ii) turnover rates have increased throughout Amazonia over the past two decades; (iii) mortality and recruitment rates have both increased significantly in every region and environmental zone, with the exception of mortality in eastern Amazonia; (iv) recruitment rates have consistently exceeded mortality rates; (v) absolute increases in recruitment and mortality rates are greatest in western Amazonian sites; and (vi) mortality appears to be lagging recruitment at regional scales. These spatial patterns and temporal trends are not caused by obvious artefacts in the data or the analyses. The trends cannot be directly driven by a mortality driver (such as increased drought or fragmentation-related death) because the biomass in these forests has simultaneously increased. Our findings therefore indicate that long-acting and widespread environmental changes are stimulating the growth and productivity of Amazon forests. MenosPrevious work has shown that tree turnover, tree biomass and large liana densities have increased in mature tropical forest plots in the late twentieth century. These results point to a concerted shift in forest ecological processes that may already be having significant impacts on terrestrial carbon stocks, fluxes and biodiversity. However, the findings have proved controversial, partly because a rather limited number of permanent plots have been monitored for rather short periods. The aim of this paper is to characterize regional-scale patterns of 'tree turnover' (the rate with which trees die and recruit into a population) by using improved datasets now available for Amazonia that span the past 25 years. Specifically, we assess whether concerted changes in turnover are occurring, and if so whether they are general throughout the Amazon or restricted to one region or environmental zone. In addition, we ask whether they are driven by changes in recruitment, mortality or both. We find that: (i) trees 10 cm or more in diameter recruit and die twice as fast on the richer soils of southern and western Amazonia than on the poorer soils of eastern and central Amazonia; (ii) turnover rates have increased throughout Amazonia over the past two decades; (iii) mortality and recruitment rates have both increased significantly in every region and environmental zone, with the exception of mortality in eastern Amazonia; (iv) recruitment rates have consistently exceeded mortality rates; (v... Mostrar Tudo |
Palavras-Chave: |
Brasil. |
Thesagro: |
Desenvolvimento Florestal; Produção Florestal. |
Thesaurus NAL: |
Amazonia. |
Categoria do assunto: |
-- |
Marc: |
LEADER 03604naa a2200565 a 4500 001 1408524 005 2022-04-28 008 2004 bl uuuu u00u1 u #d 100 1 $aPHILLIPS, O. L. 245 $aPattern and process in Amazon tree turnover, 1976-2001.$h[electronic resource] 260 $c2004 520 $aPrevious work has shown that tree turnover, tree biomass and large liana densities have increased in mature tropical forest plots in the late twentieth century. These results point to a concerted shift in forest ecological processes that may already be having significant impacts on terrestrial carbon stocks, fluxes and biodiversity. However, the findings have proved controversial, partly because a rather limited number of permanent plots have been monitored for rather short periods. The aim of this paper is to characterize regional-scale patterns of 'tree turnover' (the rate with which trees die and recruit into a population) by using improved datasets now available for Amazonia that span the past 25 years. Specifically, we assess whether concerted changes in turnover are occurring, and if so whether they are general throughout the Amazon or restricted to one region or environmental zone. In addition, we ask whether they are driven by changes in recruitment, mortality or both. We find that: (i) trees 10 cm or more in diameter recruit and die twice as fast on the richer soils of southern and western Amazonia than on the poorer soils of eastern and central Amazonia; (ii) turnover rates have increased throughout Amazonia over the past two decades; (iii) mortality and recruitment rates have both increased significantly in every region and environmental zone, with the exception of mortality in eastern Amazonia; (iv) recruitment rates have consistently exceeded mortality rates; (v) absolute increases in recruitment and mortality rates are greatest in western Amazonian sites; and (vi) mortality appears to be lagging recruitment at regional scales. These spatial patterns and temporal trends are not caused by obvious artefacts in the data or the analyses. The trends cannot be directly driven by a mortality driver (such as increased drought or fragmentation-related death) because the biomass in these forests has simultaneously increased. Our findings therefore indicate that long-acting and widespread environmental changes are stimulating the growth and productivity of Amazon forests. 650 $aAmazonia 650 $aDesenvolvimento Florestal 650 $aProdução Florestal 653 $aBrasil 700 1 $aBAKER, T. R. 700 1 $aARROYO, L. 700 1 $aHIGUCHI, N. 700 1 $aKILLEEN, T. J. 700 1 $aLAURENCE, W. F. 700 1 $aLEWIS, S. L. 700 1 $aLLOYD, J. 700 1 $aMALHI, Y. 700 1 $aMONTEAGUDO, A. 700 1 $aNEILL, D. A. 700 1 $aVARGAS, P. N. 700 1 $aSILVA, J. N. M. 700 1 $aTERBORGH, J. 700 1 $aMARTÍNEZ, R. V. 700 1 $aALEXIADES, M. 700 1 $aALMEIDA, S. 700 1 $aBROWN, S. 700 1 $aCHAVES, J. 700 1 $aCOMISKEY, J. A. 700 1 $aCZIMCZIK, C. I. 700 1 $aDI FIORE, A. 700 1 $aERWIN, T. 700 1 $aKUEBLER, C. 700 1 $aLAURANCE, S. G. 700 1 $aNASCIMENTO, H. E. M. 700 1 $aOLIVIER, J. 700 1 $aPALACIOS, W. 700 1 $aPATIÑO, S. 700 1 $aPITMAN, N. C. A. 700 1 $aQUESADA, C. A. 700 1 $aSALDIAS, M. 700 1 $aLEZAMA, A. T. 700 1 $aVINCETI, B. 773 $tPhilippine Transactions of Royal Society of London. B$gv. 359, n. 1443, p. 381-407, 2004.
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