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Caldasia
Print version ISSN 0366-5232On-line version ISSN 2357-3759
Abstract
ALTAMIRANDA-S., MARIANO; PEREZ-G., LEÓN ANDRÉS and GUTIERREZ-M., LUIS CARLOS. Composition and microhabitat preference of Odonata larvae (insecta) in the San Juan de Tocagua swamp (Atlántico, Colombia). Caldasia [online]. 2010, vol.32, n.2, pp.399-410. ISSN 0366-5232.
We evaluated the response of the assembly of Odonata larvae to the available substrates on the shoreline of the Swamp San Juan de Tocagua, Atlántico, Colombia. We sampled the habitats from September 2006 to March 2007 to estimate diversity, richness and abundance of larval odonates. We also measured physical and chemical parameters of the water body. The species showed a broad occupancy of the substrate, with greater cover and permanence on the floating macrophytes and the muddy bottom. The species of the bottom of the swamp were not associated with a particular the type of texture. The measured physicochemical factors were not associated with the diversity, richness and abundance of the larvae in the system, suggesting that the variation in the values of these parameters does not explain the response of the assembly during the study.
Keywords : Aquatic vegetation; richness; abundance; macrophytes.