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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). Repositório Alice
ARAGÃO, D. V.; FORTINI, L. B.; MULKEY, S. S.; ZARIN, D. J.; ARAUJO, M. M.; CARVALHO, C. J. R. de..
Alternative hypotheses were tested to explain a previously reported anomaly in the response of leaf photosynthetic capacity at light saturation (A..) in Miconia ciliata to dry-season irrigation. The anomaly is characterized by an abrupt increase in leaf A._ for nonirrigated plants at the onset of the rainy season to values that significantly exceeded corresponding measurements for plants that were irrigated during the previous dry season. Hypothesis I posits that a pulse in leaf nitrogen increases CO2 assimilation in nonirrigated plants at the onset of the wet season and is dampened for irrigated plants; this hypothesis was rejected because, although a wet-season nitrogen pulse did occur, it was identical for both irrigated and nonirrigated plants and was...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Amazon; Compensatory photosynthesis; Drought seasonality; Nitrogen content; Reprodutive phenology; Secondary forest.
Ano: 2005 URL: http://www.alice.cnptia.embrapa.br/handle/doc/578363
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Moisture stress constrains carbon flux rates in an Eastern Amazonian regrowth forest. Repositório Alice
ZARIN, D. J.; MULKEY, S. S.; VASCONCELOS, S. S.; FORTINI, L. B.; CARVALHO, C. J. R.; OLIVEIRA, F. A..
2002
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Floresta; Rebrota; Conteúdo de água no solo; Taxa do fluxo de carbono.
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/handle/doc/406232
Registros recuperados: 2
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