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Phenology and phylogeny of animal-dispersed plants in a Dry Chaco forest (Argentina)

Marco, Diana E. and Páez, Sergio A. (2002) Phenology and phylogeny of animal-dispersed plants in a Dry Chaco forest (Argentina). Journal of Arid Environments, 52 (1). pp. 1-16. ISSN 0140-1963

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Phenological patterns of dry tropical forests have been related to environmental factors, mainly rainfall and insolation, and to plant endogenous rhythms inherent to trees as large, perennial plants. Superimposed to these environmental ('external hypothesis') and intrinsic ('endogenous hypothesis') explanations, there may be phylogenetic constraints contributing to shape phenology. The phenology of tree and shrub species with fleshy fruits in a Dry Chaco forest in Argentina was studied addressing these hypotheses and following two approaches, with the species average values taken as independent data points, and removing phylogenetic effects. The hypotheses addressed are largely complementary to one another. Strong environmental restrictions conditioned general flowering patterns with specieś endogenous characteristics acting secondarily. Phylogenetic patterns were also masked by climatic variables. When considering fruiting phenology, however, phylogeny, representing a set of specieś shared traits, predominated over environmental restrictions.

Tipo de documento: Artículo
Palabras clave: Argentina. Dispersal guild. Dry Chaco forest. Flowering and fruiting patterns. Phenology. Phylogeny.
Temas: S Agricultura > SB Cultura de la planta
S Agricultura > SF Cultura de los animales
Unidad académica: Universidad Católica de Córdoba > Facultad de Ciencias Agropecuarias
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