Abstract

MORENO PALLARES, MARÍA INÉS  and  GUILLOT MONROY, GABRIEL HERNANDO. Spatial and Temporal Distribution of Dragonflies Naiads in Wetlands La Vaca and Santa Maria del Lago, Bogotá, Colombia. Acta biol.Colomb. [online]. 2012, vol.17, n.2, pp.281-294. ISSN 0120-548X.

We evaluated the spatial and temporal variation in communities of dragonfly's naiads and their association to the habitat rehabilitation status in LaVaca and Santa María del Lagowetlands. Four samplings were carried out in several sites of each during a year. Macroinvertebrates were collected at the entryande exit flow, and in open waters of the wetlands using standard techniques. We found a gradient in the distribution of the abundance of nymphs in both wetlands, where naiads community had the highest number of individuals in the places located farther from the dumping sites. Comparing the community s composition between wetlands La Vaca and Santa María del Lago through the beta diversity, heterogeneity was found in both ecosystems. The gradient in the distribution of the abundance of naiads observed in both wetlands fits with to a response of the species in terms of tolerance to the environmental variables.

Keywords : Drangonfly; naiads; Odonata; spatial and temporal distribution; wetlands.

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