J. E. Burgess

Some Effects of Cultural Practices on Aquatic Environments and Native Fish Populations

Cultural practices which either contribute nutrient materials to the ecosystem or accelerate detrition by induced recirculation of nutrients within the system result in environmental changes which persist after the practices have been discontinued. The effects of environmental modification were found to be reflected in species structure of native fish populations. The percent of centrarchids within the total population was found to occur in direct proportion to the percent of productive bottom. Macroinvertebrate organisms used as food by centrarchids were' found to be restricted to...