Abstract

BOJORGES-BANOS, José Cruz. Richness and diversity of bird species associated with mangrove in three lagoon systems in the coastal region of Oaxaca, Mexico. Rev. Mex. Biodiv. [online]. 2011, vol.82, n.1, pp.205-215. ISSN 2007-8706.

Avian richness and diversity was recorded in the lagoons of Chacahua, Manialtepec and La Ventanilla, using counts and captures. Shannon-Wiener diversity was compared using the Hutcheson's t-test, similarity of species richness was determined, as were differences in abundance. Species accumulation curves were generated and richness was estimated using the Incidence-based Estimator. 17 orders, 39 families and 94 species were registered, 65 of which were resident and 25 of which were migratory. While no difference in abundance was detected (p > 0.05), there was difference in diversity between the lagoons, with La Ventanilla presenting the highest index (3.51). The greatest similarity obtained was between Chacahua and Manialtepec, with 56%, and the least was between Manialtepec and La Ventanilla, with 42%. The richness and proportion of resident and migratory species was similar in the 3 areas; however, due to the low similarity, it is inferred that species composition differs significantly and that possibilities of registering other species exist. This information complements previous studies, it represents a current inventory and indicates that the avifauna associated with mangroves has not been totally documented.

Keywords : avifauna; diversity; Oaxaca; mangrove; richness.

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