A STEADY-STATE MODEL OF PCB ACCUMULATION IN DAB FOOD-WEB

Citation
V. Loizeau et A. Menesguen, A STEADY-STATE MODEL OF PCB ACCUMULATION IN DAB FOOD-WEB, Oceanologica acta, 16(5-6), 1993, pp. 633-640
Citations number
30
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Oceanografhy
Journal title
ISSN journal
0399-1784
Volume
16
Issue
5-6
Year of publication
1993
Pages
633 - 640
Database
ISI
SICI code
0399-1784(1993)16:5-6<633:ASMOPA>2.0.ZU;2-S
Abstract
A five-compartment steady-state food web model is proposed for the ben thic food web leading to the dab. Three exposure pathways are consider ed in the description of accumulation by benthic animals: ingestion of particulate contaminants associated with either sediment or phytoplan kton, and respiratory uptake of free dissolved contaminant in overlayi ng water. Application of the model to a simple food web in the Bay of Seine (Eastern Channel) indicates that : a) feeding is the principal r oute of contamination, especially for PCB which have more than four ch lorine atoms in the molecule ; b) excretion and growth rates, phytopla nkton lipid fraction and organic carbon content of sediment are the pa rameters which mostly determine the chemical bioaccumulation in the fo od web.