Autor: Marie-Jeanne Teil, Marc Chevreuil, A. Chesterikoff, B. Garban, Martine Blanchard, D. Ollivon, A. M. Carru
Rok vydání: 1999
Předmět:
Zdroj: Hydrobiologia. 400:149-154
ISSN: 0018-8158
Popis: We studied the impact of urban and industrial activity upon the occurrence and the distribution of pollutants in the fresh estuary of the River Seine. Contamination was investigated under dry weather conditions, by determination of PCB and trace metal levels upstream and downstream of Rouen and the pollutant content of organisms with different positions in the trophic web. PCB contents of roach were higher downstream than upstream of Rouen. Cd levels showed a regular four fold increase from upstream to downstream of Rouen. Cyprinidae (ablet, roach) showed similar PCB or even higher trace metal levels than their predators (Percidae). This result suggests that contaminated food intake was not the main pathway for pollutant accumulation.
Databáze: OpenAIRE