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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 : 17 | |
| 6. |  | MIRANDA, I. S.; SÁ, T. D. A.; MENEZES, M. Situação atual e perspectivas do ensino, capacitação e pesquisa agroflorestal no Brasil: uma abordagem com ênfase na região amazônica. In: MULLER, M. W.; GAMA-RODRIGUES, A. C. da; BRANDÃO, I. C. S. F. L.; SERÔDIO, M. H. de C. F. (Ed.). Sistemas agroflorestais, tendência da agricultura ecológica nos trópicos: sustento da vida e sustento de vida. Ilhéus, BA: SBSA: CEPLAC: Universidade Estadual do Norte Fluminense, 2004. p. 243-255. Trabalhos apresentados no Congresso Brasileiro de Sistemas Agroflorestais, 4., 2002, Ilhéus.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 9. | | SILVA JUNIOR, A. T.; MIRANDA, I. S.; SÁ, T. D. de A. Crescimento e regeneração em diferentes tratamentos agrícolas no nordeste do Pará. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA FCAP, 12.; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 6., 2002, Belém, PA. A contribuição do profissional de Ciências Agrárias no uso e conservação da biodiversidade: anais. Belém, PA: FCAP: Embrapa Amazônia Oriental, 2002.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 12. | | VALE, I. do; MIRANDA, I. S.; LACERDA, F. da C. B.; BISPO, C. J. C.; KATO, O. R. Vegetação espontânea após o uso da trituração mecanizada e manual em sistemas agroflorestais. In: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 8., 2011, Belém, PA. Anais... Belém, PA: SBSAF: Embrapa Amazônia Oriental: UFRA: CEPLAC: EMATER: ICRAF, 2011. 1 CD-ROM. Editores técnicos: Roberto Porro, Milton Kanashiro, Maria do Socorro Gonçalves Ferreira, Leila Sobral Sampaio e Gladys Ferreira de Sousa.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 13. | | SAMPAIO, S. M. N.; HOMMA, A. K. O.; LAQUES, A, E.; MIRANDA, I. S. M. S.; MITJA, D. Formation of babassu in degraded areas by human action in Southeast Pará, Brazil: its importance for recovery of legal reserve areas. In: ECOLOGICAL ECONOMICS AND RIO+20: CHALLENGES AND CONTRIBUTIONS FOR A GREEN ECONOMY, 2012, Rio de Janeiro. Conference procedings... Rio de Janeiro: ISEE, 2012. ISEE 2012.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 14. | | OLIVEIRA, M. G.; SANTOS, G. G. A.; LAQUES, A.-E.; THALÊS, M. C.; MITJA, D.; MIRANDA, I. S. Métricas da paisagem e quantidade de habitat florestal em um mosaico agrícola, sudeste do Pará. Pesquisa Florestal Brasileira, Colombo, v. 42, e201902023, 2022. p. 1-8. Nota científica.| Biblioteca(s): Embrapa Florestas. |
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| 15. | | BRAGA, E. O.; ROCHA, A. E. S.; COSTA NETO, S. V.; LIMA, T. T. S.; COSTA, L. G. S.; MIRANDA, I. S. Biomassa e sazonalidade das raízes finas em savanas da Amazônia Oriental. Pesquisa Florestal Brasileira, Colombo, v. 37, n. 92, p. 475-483 out./dez. 2017.| Biblioteca(s): Embrapa Florestas. |
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| 16. | | SAMPAIO, S. M. N.; LAQUES, A.; COELHO, R. F. de R.; MIRANDA, I. S.; CORDEIRO, I. M. C. C.; GAZEL, A. Tipos de paisagens: um instrumento de identificação e avaliação de sistemas agroflorestais em assentamentos rurais na mesorregião Sudeste paraense (PA). In: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 6., 2006, Campos dos Goytacazes. Sistemas agroflorestais: bases científicas para o desenvolvimento sustentável. Campos dos Goytacazes: Universidade Estadual do Norte Fluminense Darcy Ribeiro; Salvador: Sociedade Brasileira de Sistemas Agroflorestais, 2006. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 17. | | MARICHAL, R.; GRIMALDI, M.; FEIJOO M. A.; OSZWALD, J.; PRAXEDES, C.; RUIZ COBO, D. H.; DEL PILAR HURTADO, M.; DESJARDINS, T.; SILVA JUNIOR, M. L. da; COSTA, L. G. da S.; MIRANDA, I. S.; OLIVEIRA, M. N. D.; BROWN, G. G.; TSÉLOUIKO, S.; MARTINS, M. B.; DECAËNS, T.; VELASQUEZ, E.; LAVELLE, P. Soil macroinvertebrate communities and ecosystem services indeforested landscapes of Amazonia. Applied Soil Ecology, v. 83, p. 177-185, Nov. 2014. XVI International Colloquium on Soil Zoology & XIII International Colloquium on Apterygota, 2012, Coimbra. Selected papers.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 17 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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