Richard A. Ryder

• A Conceptual approach for the application of biological indicators of ecosystem quality in the Great Lakes Basin
• A study of the effects of postural change on the peripheral circulation
• Comparative properties of rivers and lakes from an Ontario perspective
• Fishes of Northern Ontario
• Further investigation of fish predation by otter, Lutra c. canadensis, in Michigan
• Total fish landings from fresh waters as a function of limnological variables, with special reference to lakes of East-Central Africa