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Abstract:

We studied developmental and environmental constraints on leaf dynamics, morphology and physiology in the monopodial tropical palm of the Atlantic Forest biome, Euterpe edulis. Plastic responses to light environments in terms of photosynthesis, leaf size, leaf life span, patterns of biomass allocation and growth were analysed. Plants were grown during 14 months in a shade house under four different growth irradiances. Plants of Euterpe edulis were able to adjust leaf demography and biomass allocation in the different light treatments. Leaf life span increased by 100 days with decreasing light levels while the rate of leaf production decreased, consistent with lower electron transport rates. At low light levels, adjustments in biomass allocation to leaf components allowed E. edulis to reduce self-shading and increase light interception. At high light plants allocated more biomass to roots, and the plants exhibited small leaf sizes when leaves were compared using an explicit ontogenetic analysis. Ontogeny constrained the maximum size that each consecutive leaf could achieve, while growth irradiance determined the rate of leaf production and other leaf traits. Consequently, there were both, developmental constraints and environmental determinants influencing leaf demography and morphology in E. edulis. The findings of this ecophysiological and demographic study are relevant to palms growing under natural conditions and help to explain the success of E. edulis in the forest understory and its absence from large gap openings. Our results not only confirm that E. edulis is a shade tolerant species, but also show that palms are able to acclimate to different growing condition as well as trees. © 2011 Elsevier GmbH.

Registro:

Documento: Artículo
Título:Growth and leaf production in the tropical palm Euterpe edulis: Light conditions versus developmental constraints
Autor:Gatti, M.G.; Campanello, P.I.; Goldstein, G.
Filiación:CONICET - Laboratorio de Ecología Funcional, Dept. Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
Department of Biology, University of Miami, P.O. Box 249118, Coral Gables, FL 33124, United States
IBS - Instituto de Biologia Subtropical, Facultad de Ciencias Forestales, Universidad Nacional de Misiones, Andresito 21, 3370 Puerto Iguazu, Misiones, Argentina
Palabras clave:Atlantic Forest; Leaf life span; Leaf production; Light acclimation; Ontogeny; Palmae; biomass allocation; biome; demography; developmental biology; ecophysiology; electron; evergreen tree; functional morphology; growth rate; leaf morphology; light effect; ontogeny; physiological response; radiation balance; tropical environment; understory; Atlantic Forest; Arecaceae; Euterpe edulis
Año:2011
Volumen:206
Número:8
Página de inicio:742
Página de fin:748
DOI: http://dx.doi.org/10.1016/j.flora.2011.04.004
Título revista:Flora: Morphology, Distribution, Functional Ecology of Plants
Título revista abreviado:Flora Morphol. Distrib. Funct. Ecol. Plants.
ISSN:03672530
CODEN:FLRAB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03672530_v206_n8_p742_Gatti

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Citas:

---------- APA ----------
Gatti, M.G., Campanello, P.I. & Goldstein, G. (2011) . Growth and leaf production in the tropical palm Euterpe edulis: Light conditions versus developmental constraints. Flora: Morphology, Distribution, Functional Ecology of Plants, 206(8), 742-748.
http://dx.doi.org/10.1016/j.flora.2011.04.004
---------- CHICAGO ----------
Gatti, M.G., Campanello, P.I., Goldstein, G. "Growth and leaf production in the tropical palm Euterpe edulis: Light conditions versus developmental constraints" . Flora: Morphology, Distribution, Functional Ecology of Plants 206, no. 8 (2011) : 742-748.
http://dx.doi.org/10.1016/j.flora.2011.04.004
---------- MLA ----------
Gatti, M.G., Campanello, P.I., Goldstein, G. "Growth and leaf production in the tropical palm Euterpe edulis: Light conditions versus developmental constraints" . Flora: Morphology, Distribution, Functional Ecology of Plants, vol. 206, no. 8, 2011, pp. 742-748.
http://dx.doi.org/10.1016/j.flora.2011.04.004
---------- VANCOUVER ----------
Gatti, M.G., Campanello, P.I., Goldstein, G. Growth and leaf production in the tropical palm Euterpe edulis: Light conditions versus developmental constraints. Flora Morphol. Distrib. Funct. Ecol. Plants. 2011;206(8):742-748.
http://dx.doi.org/10.1016/j.flora.2011.04.004