Biofilms como indicadores de la calidad del agua en el Río de la Plata

HUALDE, P. R.; LICURSI, M.; GÓMEZ, N.

San Salvador de Jujuy

Congreso; V Congreso Latinoamericano de Ecología; 2001

BIOFILMS COMO INDICADORES DE LA CALIDAD DEL AGUA EN EL RÍO DE LA PLATA Hualde P. R, Licursi M. y Gómez N.   Instituto de Limnología “Dr. R.A. Ringuelet” CONICET-UNLP. CC 712- 1900 La Plata. e- mail: nora@ilpla.edu.ar Contribución científica del Instituto de Limnología “Dr. Raúl A. Ringuelet” Nº 725.   Biofilms as indicator of water quality in the Río de la Plata river   ABSTRACT   The purpose of this paper was analysed the biofilm of natural (Schoenoplectus californicus (Mey) Soják, known as bulrush) and artificial substrates (acetate) as a tool that integrates water quality changes in the coast of the Río de la Plata river. In this study we analysed the composition and structure in biofilms exposed to oil and sewage pollution. Species diversity, evenness, pollution tolerance, taxonomic groups and diatoms indices were used as descriptors. Physicals and chemicals variables were measured in field and water samples were taken for nutrients, DBO5 and DQO analysis. The biofilms on artificial and natural substrates showed water quality changes. The community structure and species tolerance to eutrophication and organic pollution were the better descriptors. Key words: biofilm, bioindicator, oil pollution, sewage pollution, Río de la Plata river