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A Model of PCB Bioaccumulation in the Sea Bass Food Web from the Seine Estuary (Eastern English Channel) |
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| Authors: | V Loizeau A Abarnou P Cugier A Jaouen-Madoulet A -M Le Guellec and A Menesguen |
| Institution: | Département d'Ecologie Côtière, IFREMER, Centre de Brest, BP70, 29280, Plouzané, France |
| Abstract: | A bioaccumulation model was developed to simulate the PCB contamination in the sea bass food web from the Seine Estuary. The model relies upon a contaminant mass balance budget for each biological species. Biological processes determine the extent of bioaccumulation: respiration and feeding rates control the uptake of contaminants whereas excretion, spawning, and growth act on the chemicals removal. A step-by-step modelling approach was followed. A first version was a steady-state model validated for the bioaccumulation processes. In the second version seasonal variation was taken into account, and finally in the third version, the model was coupled with a population dynamics model to describe PCB contamination in each age class. |
| Keywords: | bioaccumulation PCBs numerical model Seine Estuary sea bass food web |
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