Abstract

Abstract A simple model is presented for estimating concentrations of hydrophobic organic substances in various organisms of aquatic food-webs from chemical concentrations in water and sediments. The model is applied to the Lake Ontario food-web and shown to be in satisfactory agreement with field data. Model confidence is determined by Monte-Carlo simulation. Since the model only requires basic data to characterize the organisms of the food-web, chemical properties and environmental conditions, the model is an easy-to-apply and practical tool for the management of organic contaminants on an “ecosystem” level.

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