Epiphytic algae from environments associated to the Paraná River (Buenos Aires, Argentina).

Abstract

This paper deals with the epiphytic algae found in a channel and in an artificial pond in Estación Experimental INTA Delta (Buenos Aires, Argentina). These algae are in relation with a carp population that feeds on them in their early stages. A total of 21 taxa were identified. One was a new taxon, Uronema elongatum Hoodgetts var. robustus L. Mercado et Vigna, and six are new records for Argentina. Among the Cyanophyceae, the 60% were associated algae whereas the rest were epiphytic on emergent macrophytes. The coccoid Xantophyceae were found on filamentous Chlorophyceae, whereas the filaments themselves were epiphytic on emergent macrophytes.