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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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Embrapa Amazônia Oriental (CPATU) |
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Biblioteca(s): |
Embrapa Gado de Corte. |
Data corrente: |
20/09/1999 |
Data da última atualização: |
25/05/2017 |
Autoria: |
ALMEIDA, R. F. C. de; SOARES, C. O.; ARAÚJO, F. R. de (ed.). |
Título: |
Brucelose e tuberculose bovina: epidemiologia, controle e diagnóstico. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
Brasília, DF: Embrapa Informação Tecnológica, 2004. |
Páginas: |
94 p. |
ISBN: |
85-7383-266-5 |
Idioma: |
Português |
Notas: |
CNPGC. |
Conteúdo: |
A brucelose e a tuberculose bovina são doenças infeccios de grande impacto para a cadeia da pecuária bovina no Brasil e no mundo, pois, além de determinarem sérios prejuízos diretos e indiretos ao sistema produtivo, constituem importantes zoonoses. Dessa forma, este livro foi estruturado em duas partes: uma contemplando a enfermidade brucelose bovina e a outra versando sobre a tuberculose bovina. Para cada enfermidade, é abordado um capítulo relativo aos aspectos de epidemiologia e controle, e outro tratando exclusivamente do diagnóstico. |
Palavras-Chave: |
Animal sanity; Bovine; Bovino - Doença; Brucelose Bovina; Control; Controle; Diagnosis; Disease; Tuberculose Bovina. |
Thesagro: |
Bovino; Brucelose; Diagnostico; Doença; Doença Animal; Epidemiologia; Gado; Sanidade Animal; Tuberculose. |
Thesaurus NAL: |
animal diseases; animal health; brucellosis; cattle; epidemiology; tuberculosis. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/104543/1/Brucelose-e-tuberculose-bovina-2.pdf
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Marc: |
LEADER 01694nam a2200457 a 4500 001 1325789 005 2017-05-25 008 2004 bl uuuu 00u1 u #d 020 $a85-7383-266-5 100 1 $aALMEIDA, R. F. C. de 245 $aBrucelose e tuberculose bovina$bepidemiologia, controle e diagnóstico. 260 $aBrasília, DF: Embrapa Informação Tecnológica$c2004 300 $a94 p. 500 $aCNPGC. 520 $aA brucelose e a tuberculose bovina são doenças infeccios de grande impacto para a cadeia da pecuária bovina no Brasil e no mundo, pois, além de determinarem sérios prejuízos diretos e indiretos ao sistema produtivo, constituem importantes zoonoses. Dessa forma, este livro foi estruturado em duas partes: uma contemplando a enfermidade brucelose bovina e a outra versando sobre a tuberculose bovina. Para cada enfermidade, é abordado um capítulo relativo aos aspectos de epidemiologia e controle, e outro tratando exclusivamente do diagnóstico. 650 $aanimal diseases 650 $aanimal health 650 $abrucellosis 650 $acattle 650 $aepidemiology 650 $atuberculosis 650 $aBovino 650 $aBrucelose 650 $aDiagnostico 650 $aDoença 650 $aDoença Animal 650 $aEpidemiologia 650 $aGado 650 $aSanidade Animal 650 $aTuberculose 653 $aAnimal sanity 653 $aBovine 653 $aBovino - Doença 653 $aBrucelose Bovina 653 $aControl 653 $aControle 653 $aDiagnosis 653 $aDisease 653 $aTuberculose Bovina 700 1 $aSOARES, C. O. 700 1 $aARAÚJO, F. R. de
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