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Distribution and phenology of the woody flora of Chajul, Selva Lacandona, Chiapas, Mexico Distribución y fenología de la flora leñosa de Chajul, Selva Lacandona, Chiapas, México

by Ochoa Gaona, S; Domínguez Vázquez, G.
Publisher: 2000ISSN: 0304-3711.Subject(s): ARBOLES FORESTALES | ARBOLES | TEMPERATURA DEL AIRE | FLORACION | MADURACION | FENOLOGIA | COMUNIDADES VEGETALES | PRECIPITACION | RADIACION SOLAR | VEGETACION | PLANTAS LEÑOSAS | MEXICO | FOREST TREES | TREES | AIR TEMPERATURE | FLOWERING | MATURATION | PHENOLOGY | PLANT COMMUNITIES | SOLAR RADIATION | VEGETATION | WOODY PLANTS | MEXICO | ARBRE FORESTIER | ARBRE | TEMPERATURE DE L'AIR | FLORAISON | MATURATION | PHENOLOGIE | COMMUNAUTE VEGETALE | RADIATION SOLAIRE | VEGETATION | PLANTE LIGNEUSE | MEXIQUE In: Brenesia (Costa Rica) (no.54) p. 1-24Summary: A vegetation survey was carried out for 1.5 years in Chajul, Selva Lacandona, Chiapas, Mexico, to gather data on vegetation, life form, habitat, abundance, and phenology of the 392 woody species. The following tree associations were distiguished: Evergreen Tropical Forest of Licania hypoleuca-Xylopia frutescens, Evergreen Tropical Forest of Dialium guianense-Licania platypus, Evergreen Tropical Forest of Bravaisia integerrima, Savanna of Byrsonima crassifolia-Curatella americana, Secondary Forest, and Riparian Forest. The Sorensen Similarity Index showed high-similarity in the highly disturbed associations whereas species-rich communities were the most dissimilar. The flowering and fruiting pattern of the woody species were not statistically different (P minor than 0.05). Two periods of high flowering could be distinguished; the first coincides with the period of low rainfall and the second one with midsummer. The fruiting of woody species showed three peaks. The first peak coincides with low precipitation andlow temperature, whereas the second and third peak coincided with the peaks in flowering. These results suggest that the phenological patterns of woody species in the study region are related to the variation in precipitation and temperature, and possibly also correlated with the amount of irradiation.
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A vegetation survey was carried out for 1.5 years in Chajul, Selva Lacandona, Chiapas, Mexico, to gather data on vegetation, life form, habitat, abundance, and phenology of the 392 woody species. The following tree associations were distiguished: Evergreen Tropical Forest of Licania hypoleuca-Xylopia frutescens, Evergreen Tropical Forest of Dialium guianense-Licania platypus, Evergreen Tropical Forest of Bravaisia integerrima, Savanna of Byrsonima crassifolia-Curatella americana, Secondary Forest, and Riparian Forest. The Sorensen Similarity Index showed high-similarity in the highly disturbed associations whereas species-rich communities were the most dissimilar. The flowering and fruiting pattern of the woody species were not statistically different (P minor than 0.05). Two periods of high flowering could be distinguished; the first coincides with the period of low rainfall and the second one with midsummer. The fruiting of woody species showed three peaks. The first peak coincides with low precipitation andlow temperature, whereas the second and third peak coincided with the peaks in flowering. These results suggest that the phenological patterns of woody species in the study region are related to the variation in precipitation and temperature, and possibly also correlated with the amount of irradiation.

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