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Photosynthetic responses of tropical tree species from different successional groups under contrasting irradiance conditions Rev. Bras. Bot.
Ribeiro,Rafael V; Souza,Gustavo M; Oliveira,Ricardo F; Machado,Eduardo C.
This study evaluated the photosynthetic responses of seven tropical trees of different successional groups under contrasting irradiance conditions, taking into account changes in gas exchange and chlorophyll a fluorescence. Although early successional species have shown higher values of CO2 assimilation (A) and transpiration (E), there was not a defined pattern of the daily gas exchange responses to high irradiance (FSL) among evaluated species. Cariniana legalis (Mart.) Kuntze (late secondary) and Astronium graveolens Jacq. (early secondary) exhibited larger reductions in daily-integrated CO2 assimilation (DIA) when transferred from medium light (ML) to FSL. On the other hand, the pioneer species Guazuma ulmifolia Lam. had significant DIA increase when...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chlorophyll fluorescence; Flexibility response; Functional groups; Gas exchange; High irradiance.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042005000100012
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