Abstract

CORTES-GUZMAN, Daniela  and  LINARES, Edgar L.. Freshwater molluscs of Old Providence, San Andrés, Providencia and Santa Catalina Archipielago, Colombia. Acta Zool. Mex [online]. 2016, vol.32, n.1, pp.101-110. ISSN 2448-8445.

The present study describes the composition of the mollusk community in various streams of Providence, and the dynamic of these during three hydrological periods. Three sampling were carried in five streams of the island, where the mollusk were collected. Indexes and community descriptors were calculated, the species dynamic with the seasonality were described and microhabitat preferences were established. Five species of freshwater mollusk, four of which were not reported for the island before, were found. The seasonal dynamic of community showed a population increase in all species, except for one, during the rainy season, and an increase in equity values. Boulders and roots microhabitats were the most remarkable, and it was found that sites with the greatest number of available microhabitats have more mollusk abundance.

Keywords : freshwater molluscs; seasonality; seasonal dynamics.

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