Epiphytic algae from environments associated to the Paraná River (Buenos Aires, Argentina). Darwiniana 34: 275-283

DARWINIANA

34(1-4): 275-283. 1996

ALGAS EPIFITAS DE AMBIENTES ASOCIADOS AL RIO PARANA (BUENOS AIRES, ARGENTINA)

LILIANA M. MERCADO¹

Instituto de Limnología "Dr. Raúl A. Ringuelet", Av. Calchaquí km 23.5, (1888) Florencio Varela, Buenos Aires, Argentina.

MARIA SUSANA VIGNA²

Facultad de Ciencias Exactas y Naturales, U.B.A, Dpto de Ciencias Biológicas, (1428) Buenos Aires, Argentina.

ABSTRACT: Mercado, L.M. and Vigna, M.S. 1996. Epiphytic algae from environments associated to the Paraná River (Buenos Aires, Argentina).Darwiniana 34(1-4):00.00

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, 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 filamentoces Chlorophyceae, whereas the filaments themselves were epiphytic on emergent macrophytes.

* Presentado en el VI Congreso Latinoamericano de Botánica (Mar del Plata, Octubre de 1994).

¹ Becaria de Iniciación del CONICET.

² Miembro de la Carrera del Investigador Cientifico y Tecnológico del CONICET.