Abstract

Drifting and wrack seaweeds were collected from four beaches off San Andres island, Caribbean Colombia, between February and November 2009 for a taxonomic survey of the floating flora in the area. We found 1 species of Cyanophyta, 28 species of Rhodophyta, 26 species of Phaeophyceae, and 26 species of Chlorophyta, for a total of 80 taxa. Of these, 24 species (30% of the species encountered) were new records, 18 for the archipelago and 6 for Colombia. These new records increase by 11.9% the number of species in the region recorded to date. The Phaeophyceae constituted the largest biomass, and most Rhodophyta species found were small epiphytes on Padina, Dictyota and Dictyopteris.

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