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| Registros recuperados : 23 | |
| 3. |  | VASCONCELOS, S. S.; ZARIN, D. J.; ARAÚJO, M. M.; MIRANDA, I. de S. Aboveground net primary productivity in tropical forest regrowth increases following wetter dry-seasons. In: REUNIÃO ANUAL DA SBPC, 59., 2007, Belém, PA. Resumos... Belém, PA: SBPC, [2007].| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 6. | | COELHO, R. de F. R.; ZARIN, D. J.; MIRANDA, I. S.; TUCKER, J. M. Análise florística e estrutural de uma floresta em diferentes estágios sucessionais no município de Castanhal, Pará. Acta Amazonica, Manaus, v. 33, n. 4, p. 563-582, out./dez. 2003.| Biblioteca(s): Embrapa Florestas. |
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| 8. | | COELHO, R. de F. R.; ZARIN, D. J.; MIRANDA, I. S.; TUCKER, J. M. Ingresso e mortalidade em uma floresta em diferentes estágios sucessionais no município de Castanhal, Pará. Acta Amazonica, Manaus, v. 33, n. 4, p. 619-630, out./dez. 2003.| Biblioteca(s): Embrapa Florestas. |
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| 11. | | VASCONCELOS, S. S.; ZARIN, D. J.; ROSA, M. B. S. da; OLIVEIRA, F. de A.; CARVALHO, C. J. R. de. Leaf decomposition in a dry season irrigation experiment in eastern Amazonian forest regrowth. Biotropica, Lawrence, v. 39, n. 5, p. 593-600, 2007.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 13. | | ZARIN, D. J.; MULKEY, S. S.; VASCONCELOS, S. S.; FORTINI, L. B.; CARVALHO, C. J. R.; OLIVEIRA, F. A. Moisture stress constrains carbon flux rates in an Eastern Amazonian regrowth forest. In: CONFERÊNCIA CIENTÍFICA INTERNACIONAL DO LBA, 2., 2002, Manaus. Resumos. Manaus: LBA, 2002. Não paginado.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 14. | | ARAGÃO, D. V.; FORTINI, L. B.; MULKEY, S. S.; ZARIN, D. J.; ARAUJO, M. M.; CARVALHO, C. J. R. de. Correlation but no causation between leaf nitrogen and maximum assimilation: the role of drought and reproduction in gas exchange in an understory tropical plant Miconia ciliata (Melastomataceae). American Journal of Botany, v. 92, n. 3, p. 456-461, Mar. 2005.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 16. | | RANGEL-VASCONCELOS, L. G. T.; ZARIN, D. J.; OLIVEIRA, F. de A.; VASCONCELOS, S. S.; CARVALHO, C. J. R. de; SANTOS, M. M. de L. S. Effect of water availability on soil microbial biomass in secondary forest in Eastern Amazonia. Revista Brasileira de Ciência do Solo, v. 39, n. 2, p. 377-384, mar./abr. 2015.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 17. | | VASCONCELOS, S. S.; ZARIN, D. J.; ARAÚJO, M. M.; RANGEL-VASCONCELOS, L. G. T.; CARVALHO, C. J. R. de; STAUDHAMMER, C. L.; OLIVEIRA, F. de A. Effects of seasonality, litter removal and dry-season irrigation on litterfall quantity and quality in eastern Amazonian forest regrowth, Brazil. Journal of Tropical Ecology, v. 24, p. 27-38, 2008.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 18. | | MEIR, P.; BRANDO, P. M.; NEPSTAD, D.; VASCONCELOS, S.; COSTA, A. C. L.; DAVIDSON, E.; ALMEIDA, S.; FISHER, R. A.; SOTTA, E. D.; ZARIN, D.; CARDINOT, G. The effects of drought on Amazonian rain forests. In: KELLER, M.; BUSTAMANTE, M.; GASH, J.; DIAS, P. S. (Ed.). Amazonian and global change. Estados Unidos: AGU, 2009. p. 429-449. (Geophysical Monograph Series, v. 186).| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 19. | | MEIR, P.; BRANDO, P. M.; NEPSTAD, D.; VASCONCELOS, S.; COSTA, A. C. L.; DAVIDSON, E.; ALMEIDA, S.; FISHER, R. A.; SOTTA, E. D.; ZARIN, D.; CARDINOT, G. The effects of drought on Amazonian rain forests. In: KELLER, M.; BUSTAMANTE, M.; GASH, J.; DIAS, P. S. (Ed.). Amazonian and global change. Estados Unidos: AGU, 2009. p. 429-449. (Geophysical Monograph Series, v. 186).| Biblioteca(s): Embrapa Amapá. |
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| 20. | | VASCONCELOS, L. G. T. R.; ZARIN, D. J.; CARVALHO, C. J. R. de; SANTOS, M. M. de L. S.; VASCONCELOS, S. S.; OLIVEIRA, F. de A. Carbono, nitrogênio e atividade da biomassa microbiana de um solo sob vegetação secundária de diferentes idades na Amazônia Oriental. Revista de Ciências Agrárias, n. 44, p. 49-63, jul./dez. 2005.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| Registros recuperados : 23 | |
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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. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
08/07/2005 |
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Data da última atualização: |
02/12/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
FORTINI, L. B.; MULKEY, S. S.; ZARIN, D. J.; VASCONCELOS, S. S.; CARVALHO, C. J. R. de. |
|
Afiliação: |
LUCAS B. FORTINI, University of Florida; STEPHEN S. MULKEY, University of Florida; DANIEL J. ZARIN, University of Florida; STEEL S. VASCONCELOS, University of Florida; CLAUDIO JOSE REIS DE CARVALHO, CPATU. |
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Título: |
Drought constraints on leaf gas exchange by Miconia ciliata (Melastomataceae) in the understory of an eastern Amazonian regrowth forest stand. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
American Journal of Botany, v. 90, n. 7, p. 1064-1070, Jul. 2003. |
|
Descrição Física: |
il. |
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DOI: |
10.3732/ajb.90.7.1064 |
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Idioma: |
Inglês |
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Conteúdo: |
Analyses of the effects of drought stress on Amazonian regrowth stands are lacking. We measured leaf gas exchange and leaf water potential of Miconia ciliata (Melastomataceae) in a dry-season irrigation experiment in 14-yr-old regrowth. In the dry season, irrigated plants maintained significantly higher leaf water potentials, photosynthetic capacity at light saturation (Amax), stomatal conductance (gs), internal CO2 concentration (Ci), and lower Amax/gs than control plants. The degree of dry-season down-regulation of control plant Amax, along with its fast recovery following rain, reveals the importance of occasional dry-season rains to the carbon budget of M. ciliata. During the wet season, we observed higher Amax for control plants than for plants that had been irrigated during the dry season. We hypothesize that reduced drought constraints on photosynthesis of irrigated plants advanced the flowering and fruiting phenology of irrigated plants into the dry season. Flowers and fruits of control plants developed later, during the wet season, potentially stimulating a compensatory reproductive photosynthesis response in nearby leaves. The relative drought intolerance of M. ciliata may be a deciding factor in its ability to survive through the dynamic successional development of the regrowth stand studied. |
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Palavras-Chave: |
Floresta tripical; Miconia ciliata. |
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Thesagro: |
Fenologia; Floresta Secundaria; Fotossíntese; Melastomataceae. |
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Thesaurus NAL: |
Amazonia. |
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Categoria do assunto: |
-- |
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Marc: |
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001 1407030
005 2022-12-02
008 2003 bl uuuu u00u1 u #d
024 7 $a10.3732/ajb.90.7.1064$2DOI
100 1 $aFORTINI, L. B.
245 $aDrought constraints on leaf gas exchange by Miconia ciliata (Melastomataceae) in the understory of an eastern Amazonian regrowth forest stand.$h[electronic resource]
260 $c2003
300 $cil.
520 $aAnalyses of the effects of drought stress on Amazonian regrowth stands are lacking. We measured leaf gas exchange and leaf water potential of Miconia ciliata (Melastomataceae) in a dry-season irrigation experiment in 14-yr-old regrowth. In the dry season, irrigated plants maintained significantly higher leaf water potentials, photosynthetic capacity at light saturation (Amax), stomatal conductance (gs), internal CO2 concentration (Ci), and lower Amax/gs than control plants. The degree of dry-season down-regulation of control plant Amax, along with its fast recovery following rain, reveals the importance of occasional dry-season rains to the carbon budget of M. ciliata. During the wet season, we observed higher Amax for control plants than for plants that had been irrigated during the dry season. We hypothesize that reduced drought constraints on photosynthesis of irrigated plants advanced the flowering and fruiting phenology of irrigated plants into the dry season. Flowers and fruits of control plants developed later, during the wet season, potentially stimulating a compensatory reproductive photosynthesis response in nearby leaves. The relative drought intolerance of M. ciliata may be a deciding factor in its ability to survive through the dynamic successional development of the regrowth stand studied.
650 $aAmazonia
650 $aFenologia
650 $aFloresta Secundaria
650 $aFotossíntese
650 $aMelastomataceae
653 $aFloresta tripical
653 $aMiconia ciliata
700 1 $aMULKEY, S. S.
700 1 $aZARIN, D. J.
700 1 $aVASCONCELOS, S. S.
700 1 $aCARVALHO, C. J. R. de
773 $tAmerican Journal of Botany$gv. 90, n. 7, p. 1064-1070, Jul. 2003.
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