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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
22/02/2010 |
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Data da última atualização: |
16/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FORTINI, L. B.; BRUNA, E. M.; ZARIN, D. J.; VASCONCELOS, S. S.; MIRANDA, I. S. |
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Afiliação: |
LUCAS BERIO FORTINI, UNIVERSITY OF FLORIDA; EMILIO M. BRUNA, UNIVERSITY OF FLORIDA; DANIEL J. ZARIN, UNIVERSITY OF FLORIDA; STEEL SILVA VASCONCELOS, CPATU; IZILDINHA S. MIRANDA, UFRA. |
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Título: |
Altered resource availability and the population dynamics of tree species in Amazonian secondary forests. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Oecologia, Dec. 2009. |
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DOI: |
10.1007/s00442-009-1524-5 |
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Idioma: |
Inglês |
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Conteúdo: |
Despite research demonstrating that water and nutrient availability exert strong effects on multiple ecosystem processes in tropical forests, little is known about the effect of these factors on the demography and population dynamics of tropical trees. Over the course of 5 years, we monitored two common Amazonian secondary forest species?Lacistema pubescens and Myrcia sylvatica?in dry-season irrigation, litter-removal and control plots. We then evaluated the effects of altered water and nutrient availability on population demography and dynamics using matrix models and life table response experiments. Our results show that despite prolonged experimental manipulation of water and nutrient availability, there were nearly no consistent and unidirectional treatment effects on the demography of either species. The patterns and significance of observed treatment effects were largely dependent on cross-year variability not related to rainfall patterns, and disappeared once we pooled data across years. Furthermore, most of these transient treatment effects had little effect on population growth rates. Our results suggest that despite major experimental manipulations of water and nutrient availability?factors considered critical to the ecology of tropical pioneer tree species?autogenic light limitation appears to be the primary regulator of tree demography at early/mid successional stages. Indeed, the effects of light availability may completely override those of other factors thought to influence the successional development of Amazonian secondary forests. MenosDespite research demonstrating that water and nutrient availability exert strong effects on multiple ecosystem processes in tropical forests, little is known about the effect of these factors on the demography and population dynamics of tropical trees. Over the course of 5 years, we monitored two common Amazonian secondary forest species?Lacistema pubescens and Myrcia sylvatica?in dry-season irrigation, litter-removal and control plots. We then evaluated the effects of altered water and nutrient availability on population demography and dynamics using matrix models and life table response experiments. Our results show that despite prolonged experimental manipulation of water and nutrient availability, there were nearly no consistent and unidirectional treatment effects on the demography of either species. The patterns and significance of observed treatment effects were largely dependent on cross-year variability not related to rainfall patterns, and disappeared once we pooled data across years. Furthermore, most of these transient treatment effects had little effect on population growth rates. Our results suggest that despite major experimental manipulations of water and nutrient availability?factors considered critical to the ecology of tropical pioneer tree species?autogenic light limitation appears to be the primary regulator of tree demography at early/mid successional stages. Indeed, the effects of light availability may completely override those of other factors though... Mostrar Tudo |
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Palavras-Chave: |
Limitação de nutriente. |
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Thesagro: |
Floresta Secundaria. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02221naa a2200217 a 4500
001 1658404
005 2022-11-16
008 2009 bl uuuu u00u1 u #d
024 7 $a10.1007/s00442-009-1524-5$2DOI
100 1 $aFORTINI, L. B.
245 $aAltered resource availability and the population dynamics of tree species in Amazonian secondary forests.$h[electronic resource]
260 $c2009
520 $aDespite research demonstrating that water and nutrient availability exert strong effects on multiple ecosystem processes in tropical forests, little is known about the effect of these factors on the demography and population dynamics of tropical trees. Over the course of 5 years, we monitored two common Amazonian secondary forest species?Lacistema pubescens and Myrcia sylvatica?in dry-season irrigation, litter-removal and control plots. We then evaluated the effects of altered water and nutrient availability on population demography and dynamics using matrix models and life table response experiments. Our results show that despite prolonged experimental manipulation of water and nutrient availability, there were nearly no consistent and unidirectional treatment effects on the demography of either species. The patterns and significance of observed treatment effects were largely dependent on cross-year variability not related to rainfall patterns, and disappeared once we pooled data across years. Furthermore, most of these transient treatment effects had little effect on population growth rates. Our results suggest that despite major experimental manipulations of water and nutrient availability?factors considered critical to the ecology of tropical pioneer tree species?autogenic light limitation appears to be the primary regulator of tree demography at early/mid successional stages. Indeed, the effects of light availability may completely override those of other factors thought to influence the successional development of Amazonian secondary forests.
650 $aAmazonia
650 $aFloresta Secundaria
653 $aLimitação de nutriente
700 1 $aBRUNA, E. M.
700 1 $aZARIN, D. J.
700 1 $aVASCONCELOS, S. S.
700 1 $aMIRANDA, I. S.
773 $tOecologia, Dec. 2009.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
27/06/2007 |
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Data da última atualização: |
17/08/2022 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
DRUMOND, M. A.; ANJOS, J. B. dos; PAIVA, L. E.; MORGADO, L. B.; REIS, E. M. |
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Afiliação: |
MARCOS ANTONIO DRUMOND, CPATSA; JOSE BARBOSA DOS ANJOS, CPATSA; LAZARO EURIPEDES PAIVA, SPM - E. Petrolina; LUIZ BALBINO MORGADO, CPATSA; ELIAS MOURA REIS, CPATSA. |
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Título: |
Produção de pinhão manso no semi-árido brasileiro. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: CONGRESSO INTERNACIONAL DE AGROENERGIA E BIOCOMBUSTÍVEIS, 1., 2007, Teresina. Energia de resultados: anais. Teresina: Embrapa Meio-Norte, 2007. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
Com o objetivo de determinar o potencial produtivo do pinhão manso em condições semi-áridas, de sequeiro e irrigado, foi implantado um experimento no Campo Experimental da Embrapa ENT-Petrolina, em Petrolina, PE, entre as coordenadas de 9°09’S, 40°22’W, com altitude de 365,5 m. |
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Palavras-Chave: |
Jatropha curcas L; Nordeste; Pinhão manso; Região Semi-Árida. |
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Thesagro: |
Pinhão; Planta Oleaginosa; Produção. |
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Thesaurus NAL: |
Jatropha. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPATSA/35570/1/OPB1293.pdf
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Marc: |
LEADER 01075nam a2200265 a 4500
001 1159012
005 2022-08-17
008 2007 bl uuuu u00u1 u #d
100 1 $aDRUMOND, M. A.
245 $aProdução de pinhão manso no semi-árido brasileiro.
260 $aIn: CONGRESSO INTERNACIONAL DE AGROENERGIA E BIOCOMBUSTÍVEIS, 1., 2007, Teresina. Energia de resultados: anais. Teresina: Embrapa Meio-Norte$c2007
300 $c1 CD-ROM.
520 $aCom o objetivo de determinar o potencial produtivo do pinhão manso em condições semi-áridas, de sequeiro e irrigado, foi implantado um experimento no Campo Experimental da Embrapa ENT-Petrolina, em Petrolina, PE, entre as coordenadas de 9°09’S, 40°22’W, com altitude de 365,5 m.
650 $aJatropha
650 $aPinhão
650 $aPlanta Oleaginosa
650 $aProdução
653 $aJatropha curcas L
653 $aNordeste
653 $aPinhão manso
653 $aRegião Semi-Árida
700 1 $aANJOS, J. B. dos
700 1 $aPAIVA, L. E.
700 1 $aMORGADO, L. B.
700 1 $aREIS, E. M.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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