Fernando Arellano Martín, Mario S. Durán Castillo, Óscar E. Verduzco Salazar, Teresa Alfaro Reyna, Francisco Montoya Reyes, Yameli G Aguilar Duarte,
2023
Memorias de congresos
Tree species richness, diversity, and composition around a karstic lagoon in Quintana Roo, Mexico
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CIENCIAS DE LA VIDA
BOTANICA
BOTANICA GENERAL
The changes of vegetation characteristics in karstic ecosystems have been studied in relation to topography, but little is known about how those characteristics vary through space in relation to water bodies. We studied the varition of tree species richness, diversity, and difference in community composition in relation to the distance to the bank of a karstic lagoon in southeast Mexico. We established 24 plots with an area of 200 m2 and arranged them alongside the lagoon in groups of five. We located the first plot of each group at the bank of the lagoon, and the last at a distance of at least 400 m from the bank. Inside each plot we identified the species of all the trees whose diameter at breast height was at least 7.5 cm. We calculated species richness and Shanon and Inverse Simpson Diversity indices for each plot and distance to the bank. Furthermore, we calculated the Bray-Curtis dissimilarity to evaluate the differences in tree community composition among the distances to the bank. Finally, we evaluted if the species richness and diversity were statistically diferennt among the distances by means of one-way ANOVAs. We recorded a total of 428 individuals pertaining to 46 species and 27 families. Although the plots in the bank of the lagoon showed the highest species richness and diversity (29, H? = 2.9, D = 13.1), we did not find statistically significant differences among the distances. The Bray-Curtis dissimilarity values ranged across 0.40 and 0.78 and were greater for the plots in the bank compared to all other distances. We conclude that the bank of the lagoon hosts a distinguishable tree community due to the presence of species that need high water availability, and that there is a great heterogenity in community characteristics among the distances from the bank.
Sistema Estatal de Información y Documentación Científica y Tecnológica
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