Revista de Biología Tropical ISSN Impreso: 0034-7744 ISSN electrónico: 2215-2075

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Diversity, structure and regeneration of the seasonally dry tropical forest of Yucatán Península, Mexico.
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Keywords

Mesoamerica
seed dispersal mode
mature forest
secondary forest
seasonally inundated forest
tropical dry forest
bosque tropical seco
Mesoamérica
modo de dispersión
selva madura
vegetación secundaria
selva baja inundable.

How to Cite

Hernández-Ramírez, A. M., & García-Méndez, S. (2015). Diversity, structure and regeneration of the seasonally dry tropical forest of Yucatán Península, Mexico. Revista De Biología Tropical, 63(3), 603–616. https://doi.org/10.15517/rbt.v63i3.16532

Abstract

Seasonally dry tropical forests are considered as the most endangered ecosystem in lowland tropics. The aim of this study was to characterize the floristic composition, richness, diversity, structure and regeneration of a seasonally dry tropical forest landscape constituted by mature forest, secondary forest and seasonally inundated forest located in the Northeastern part of the Yucatán Península, Mexico. We used the Gentry’s standard inventory plot methodology (0.1 ha per forest type in 2007) for facilitating comparison with other Mesoamerican seasonally dry tropical forests; a total of 10 plots were sampled. A total of 77 species belonging to 32 families were observed in the study area. Fabaceae and Euphorbiaceae were the families with the largest taxonomic richness in the three forest types. Low levels of b diversity were observed among forest types (0.19-0.40), suggesting a high turnover of species at landscape level. The non-regenerative species were dominant (50-51 %), followed by regenerative species (30-28 %), and colonizer species (14-21 %) in the three forest types. Zoochory was the most common dispersal type in the study area. The 88 % of the observed species in the study area were distributed in Central America. Some floristic attributes of the seasonally dry tropical forest of the Yucatán Península, fall into the values reported for Mesoamerican seasonally dry tropical forests. Natural disturbances contributed to explain the high number of individuals, the low number of liana species, as well as the low values of basal area observed in this study. Our results suggested that the seasonally dry tropical forest of Yucatán Península seems to be resilient to natural disturbances (hurricane) in terms of the observed number of species and families, when compared with the reported values in Mesoamerican seasonally dry tropical forests. Nonetheless, the recovery and regeneration of vegetation in long-term depends on animal-dispersed species. This study highlights the importance of establishing multiple protected areas throughout the Mesoamerican seasonally dry tropical forest in order to conserve both µ- and b- diversity.

https://doi.org/10.15517/rbt.v63i3.16532
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