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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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| Registros recuperados : 28 | |
| 3. |  | SANTOS, S. L. dos; MADRUGA, A. L. S.; MACIEL, V. T.; CUNHA, C. R. da. Aceitação sensorial de bolo elaborado com farinhas de castanha-do-brasil e banana verde. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA PIBIC/PIBITI DA EMBRAPA ACRE, 1., 2013, Rio Branco, AC. Anais... Rio Branco, AC: Embrapa Acre, 2013. 6 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 4. | | ALVARES, V. de S.; MADRUGA, A. L. S.; LIMA, A. C. de; CAMPOS FILHO, M. D. Perfil da classificação da farinha de mandioca do território da cidadania do Vale do Juruá, Acre. In: CONGRESSO BRASILEIRO DE MANDIOCA, 14.; FEIRA BRASILEIRA DA MANDIOCA, 1., 2011, Maceió. Mandioca: fonte de alimentos e energia: anais. Maceió: SBM, 2011. 5 p. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 5. | | SANTOS, T. C. dos; ALVARES, V. de S.; COSTA, D. A. da; MADRUGA, A. L. S. Qualidade microbiológica da castanha-do-brasil seca durante o armazenamento com ventilação forçada. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA PIBIC/PIBITI DA EMBRAPA ACRE, 1., 2013, Rio Branco, AC. Anais... Rio Branco, AC: Embrapa Acre, 2013. 7 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 8. | | ALVARES, V. de S.; COSTA, D. A. da; FELISBERTO, F. A. V.; SILVA, S. F. da; MADRUGA, A. L. S. Atributos físicos e físico-químicos da farinha de mandioca artesanal em Rio Branco, Acre. Revista Caatinga, Mossoró, v. 26, n. 2, p. 50-58, abr./jun. 2013.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Acre. |
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| 16. | | ALVARES, V. de S.; CASTRO, I. M. de; COSTA, D. A. da; LIMA, A. C. de; MADRUGA, A. L. S. Qualidade da castanha-do-brasil do comércio de Rio Branco, Acre. Acta Amazonica, Manaus, v. 42, n. 2, p. 269-274, 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Acre. |
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| 18. | | MACIEL, V. T.; ALVARES, V. de S.; PEREIRA, J. D. da S.; SOUSA, S. B. de; ATHAYDE, N. B.; MADRUGA, A. L. S. Caracterização da farinha obtida da extração de óleo de bacaba como aproveitamento de resíduos agroindustriais. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFAC, 26., 2017, Rio Branco. Anais... Rio Branco: Ufac, 2018. p. 486.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 19. | | CUNHA, C. R. da; MACIEL, V. T.; MADRUGA, A. L. S.; LUNZ, A. M. P.; BERGO, C. L.; OLIVEIRA, M. do S. P. de. Caracterização físico-química da polpa de indivíduos experimentais de açaizeiro (Euterpe oleraceae Mart.) com alta produtividade. In: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 9., 2013, Ilhéus. Anais... Ilhéus: SBSAF, 2013. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre; Embrapa Amazônia Oriental. |
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| 20. | | SOUZA, J. M. L. de; ALVARES, V. de S.; ATHAYDE, N. B.; NÓBREGA, M. de S.; ARAÚJO, A. P. de S.; MADRUGA, A. L. S. Efeito da adição de polpa de buriti sobre parâmetros físico-químicos da farinha de mandioca artesanal. In: CONGRESSO BRASILEIRO DE MANDIOCA, 17.; CONGRESSO LATINO-AMERICANO E CARIBENHO DE MANDIOCA, 2., 2018, Belém, PA. Anais... Belém, PA: SBM, 2018. p. 551-555.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| Registros recuperados : 28 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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