S. Bartell, R. O'Neill, R. Gardner
Developments in Environmental Modelling
Abstract A stochastic modelling procedure was developed for use in evaluation of risks posed to aquatic ecosystems by toxic chemicals. Two models (FOAM and SWACOM) were used in the procedure to estimate probable fate and effects of potential toxicants and calculate uncertainties associated with these estimates. Results of simulations illustrate that structure-activity relationships can be used in FOAM to estimate transport, degradation, and accumulation of anthracene in lentic systems. SWACOM can extrapolate bioassay data to approximate risk of indirect effects on higher trophic levels caused by toxicants in aquatic systems.