Abstract
Based upon the ecological model presented by Andersen & Ursin (1977), we constructed an adequate model which will quantatively evaluate the overall impact of industrial large-scale development on fisheries at Osaka Bay. It is expected that the patterns of changes in biomass of dominant species, which is caused by eutrophication, will be explained by the model we have established. The simulated results for two years, 1956–1957, are as a whole comparable to the actual variations. However, the results for several species, including sea bass, flat fish, crab, mantis shrimp, and cuttlefish, differ significantly from observed data. It was attributed to the lack of accurate parameters of anabolism and catabolism for younger-aged stages of these species.
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