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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 : 23 | |
| 8. |  | LEUCHTENBERGER, C.; RIBAS, C.; MAGNUSSON, W.; MOURAO, G. de M. To each his own taste: latrines of the giant otter as a food resource for vertebrates in Southern Pantanal, Brazil. Studies on Neotropical Fauna and Environment, v. 47, n. 2, p. 81-85, August, 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Pantanal. |
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| 14. | | RIBAS, C.; CUNHA, H. A.; DAMASCENO, G.; MAGNUSSON, W. E.; SOLÉ-CAVA, A.; MOURAO, G. More than meets the eye: kinship and social organization in giant otters (Pteronura brasiliensis). Behavioral Ecology Sociobiology, v. 70, n.1, p. 61-72, 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Pantanal. |
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| 16. | | SORANSO, M.; ARAÚJO, M. M.; RIBAS, C. P.; BARBOSA, L. R. Plano de monitoramento para a praga vespa-da-galha do eucalipto, Leptocybe invasa, no Estado do Paraná. In: CONFERÊNCIA NACIONAL DE DEFESA AGROPECUÁRIA, 5., 2014, Florianópolis. Defesa agropecuária a serviço de um Estado de excelência. Florianópolis: SBDA; Concórdia: Embrapa Suínos e Aves, 2014. p. 143. Resumo.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
|  |
| 17. | | RIBAS, C.; VASCONCELLOS, A. V.; MOURAO, G.; MAGNUSSON, W.; SOLÉ-CAVA, A. M.; CUNHA, H. A. Polymorphic microsatellite loci from the endangered Giant Otter (Pteronura brasiliensis). Conservation Genetics Resources, v.3, n. 4, p.769-771, 2011.| Tipo: Nota Técnica/Nota Científica |
| Biblioteca(s): Embrapa Pantanal. |
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| 18. | | TOMAS, W. M.; CAMILO, A. R.; RIBAS, C.; LEUCHTENBERGER, C; BORGES, P. A. L; MOURAO, G.; PELLEGRIN, L. A. Distribution and conservation status of giant otter Pteronura brasiliensis in the Pantanal wetland, Brazil. The Latin American Journal of Aquatic Mammals, v. 10, n. 2, p. 107-114, dez. 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 4 |
| Biblioteca(s): Embrapa Pantanal. |
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| 19. | | DOUTEL-RIBAS, C.; MARTINS, F. I.; CAMPOS, Z. M. da S.; PIOVEZAN, U.; TOMAS, W. M.; SILVA, V. S.; PELLEGRIN, A. O.; MOURAO, G. de M. Invasive wild boars and native mammals in agroecosystems in the Atlantic Forest of Western Brazil. Pesquisa Agropecuária Brasileira, v. 54, e00241, 2019. p. 1-9. Na publicação: Zilca Campos; Walfrido Tomas; Aiesca Pellegrin; Guilherme Mourão.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Pantanal; Embrapa Suínos e Aves; Embrapa Tabuleiros Costeiros; Embrapa Unidades Centrais. |
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| 20. | | SOLAR, R.; BARLOW, J.; FERREIRA, J.; BERENGUER, E.; LEES, A.; LOUZADA, J.; MAUES, M.; MOURA, N.; OLIVEIRA, V.; CHAUL, J.; RIBAS, C.; SCHOEREDER, J. H.; MAC NALLY, R.; THOMSON, J. R.; VIEIRA, I. C. G.; GARDNER, T. How pervasive is biotic homogenization in human-modified tropical forests? In: INTERNATIONAL CONGRESS FOR CONSERVATION BIOLOGY, 27.; EUROPEAN CONGRESS FOR CONSERVATION BIOLOGY, 4., 2015, Montpellier. Mission biodiversity: choosing new paths for conservation: abstract book. [S.l.]: Society for Conservation Biology, 2015. p. 658-659.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| Registros recuperados : 23 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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