ILPLA   05424
INSTITUTO DE LIMNOLOGIA "DR. RAUL A. RINGUELET"
Unidad Ejecutora - UE
artículos
Título:
Estudio ecotoxicologico del arroyo Las Conchitas (Buenos Aires).I. Toxicidad en agua y sedimentos. II. Parámetros fisico-químicos y relevamiento de la biota
Autor/es:
HERKOVITS, J.; RODRIGUES CAPÍTULO, A.; BOYLE, T.; SERVANT, R.,; PEREZ COLL, C.; GÓMEZ, N.; MUÑOZ, L.; DOMÍNGUEZ, O.; CORTELEZZI, A.; LICURSI, M.
Revista:
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
Editorial:
Argibay Quiroga- SETAC
Referencias:
Lugar: Buenos Aires; Año: 2007 p. 50 - 50
ISSN:
0730-7268
Resumen:
ABSTRACT The proper use of water resources are essential aspects for sustainable development. Las Conchitas stream is located in the southern area of Metropolitan Buenos Aires (Municipalities of Florencio Varela and Berazategui) with 700.000 inhabitants. The area includes a Natural Park (Hudson), agriculture, industry and residential zones ending the stream into Rio de la Plata. In this preliminary study the ecotoxicity and the biota in surface water and sediments are reported. The toxicity in the water column and sediments ranged between 1 and 40 Toxicity Units (with the highest values in sediments). The relative distribution of metals both in water and sediments were: Zn>Cu>V>Pb=Ni>Cu>Cd and Cr>Zn>Pb>V>Cu>As>Ni>Cd>Hg respectively. From a biological point of view, changes in composition, density and sensibility to pollution of benthic, diatom, macroinvertebrates and fishes were reported. The correlation between the biota and the ecotoxicological data provides a panoramic view on the adverse effects due to the pollution in this stream basin.