Aquatic Macroinvertebrate community composition from small streams of the Andean region of Colombia, with emphasis on the entomofauna
DOI:
https://doi.org/10.32870/dugesiana.v20i2.4123Keywords:
Arroyos andinos, diversidad, insectos acuáticos, zona cafetera, ecosistemas acuáticos, ColombiaAbstract
The Colombian Andes are irrigated by an extensive network of small streams that originate the most important rivers of the country andcontribute fundamental ecosystem services to local rural communities. Despite the importance of these stream ecosystems, little is known abouttheir biological diversity and function. This work evaluated benthic macroinvertebrate composition in 28 first and second order streams locatedin La Vieja River Basin (Colombia’s central Andes). Results evidenced the high abundance and diversity of the regional macroinvertebratecommunity. A total of 32,319 individuals, distributed in four phyla, eight classes, 18 orders, 73 families and 91 genera, were collected.Arthropoda and Mollusca were the best represented phyla, whereas Insecta, Gastropoda and Bivalvia, were the most important classes.Chironomidae was the dominant taxa in the studied streams. Odonata was also abundant, contrasting with the typical low abundance of thisgroup in higher order systems. The most common genera were Smicridea, Heterelmis, Atrichopogon, Farrodes, Argia and Limnocoris, whichalso presented distribution patterns different than those found in larger streams. Within the Ephemeroptera, the genus Zelusia (Baetidae) ishighlighted as a new distribution record for the Andean region of the Valle del Cauca. Results demonstrate that even though the studied systems are small and immersed in agricultural landscapes, they harbor an important component of the regional and local diversity
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2015-10-01
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