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Caldasia
versão impressa ISSN 0366-5232versão On-line ISSN 2357-3759
Resumo
GARZON SANABRIA, CAROLINA e REALPE, EMILIO. Dragonfly diversity (Insecta) in the natural reserve Cabildo-Verde (Sabana de torres-Santander, Colombia), an conservation approach. Caldasia [online]. 2009, vol.31, n.2, pp.459-470. ISSN 0366-5232.
We studied the diversity of Odonata (Insecta) in six sampling stations in the Sabana de Torres county, department of Santander, Colombia. Four stations were located within the Natural reserve Cabildo Verde, an area long the western hall slope of the Eastern cordillera, in the Magdalena's river mid valley. The remaining two were located outside of this reserve. The species composition was analyzed using an euclydian distance analysis. We found 245 adult individuals belonging to seven families, 22 genera and 39 species in the Sabana de Torres; 33 species, most of them in the suborder zygoptera were found in the Natural Reserve Cabildo verde. The Shannon-Weaver value for the natural reserve was of H`= 2,972 and outside of the reserve H`= 2,645, both relatively high in comparison to other studies. There was not significant differences in the number of species inside and outside of the reserve (Chi-squared, X ² = 1,51, Gl=1, p> 0.05); however, the composition of dragonflies within the reserve was given mainly by estenotopics species, especially those in the families Protoneuridae and Perilestidae. Such species are abundant in the studied area, occurring in streams with high vegetal coverage in primary and secondary forests.
Palavras-chave : Dragonfly; stenotopic; conservation; natural reserve Cabildo Verde; Santander.