Community Structure And Differential Impingement Of Savannah River Fishes

the fish communities of the middle Savannah River and 2 cooling water intake canals connected to the river had equal species richness and were equally diverse. However, the relative abundance of functionally similar species groups differed between the localities. Sunfishes were more dominant in the canal communities. Suckers contribued 55% of the biomass in all 3 communities. Impingement was very low and spread over 32 species. Three species of c1upeids comprized 32% of the total number of fish impinged. The impingement of a number of species was disproportionate to their relative abundance in the intake canals