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Leaf life span and nitrogen content in semideciduous forest tree species (Croton priscus and Hymenaea courbaril) Scientia Agricola
Haddad,Claudia Regina Baptista; Lemos,Damiani Pereira; Mazzafera,Paulo.
In comparison to deciduous species, evergreen plants have lower leaf nutrient contents and higher leaf life span, important mechanisms for nutrient economy, allowing the colonization of low fertility soils. Strategies to conserve nitrogen in two semideciduous tropical forest tree species, with different leaf life spans were analyzed. The hypothesis was the fact that the two species would present different nitrogen conservation mechanisms in relation to chemical (total nitrogen, protein, chlorophyll, and proteolytic activity), functional (leaf life span, N-use efficiency, and N-resorption efficiency), morphological (specific leaf mass) leaf characteristics, and total nitrogen in the soil. Hymenaea courbaril L. presented lower nitrogen compounds in leaves,...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Leaf life span; Specific leaf mass; N-resorption efficiency; N-use efficiency; Atlantic forest.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000400018
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