Emeritus Professor, Biological Sciences, University of Cape Town

Rachel Carson Chair in Sustainability & University Distinguished Professor, Michigan State

Science Systems and Applications, Inc. (SSAI)

Senior Fellow, INSTAAR, and Professor Emeritus of Ecology and Evolutionary Biology

Professor, School of Biological, Earth and Environmental Sciences, University of New South …

Professor of Soil Microbial Ecology, University of British Columbia

Environmental Sciences Division, Oak Ridge National Laboratory

Professor of Zoology, Universidad de Vigo

National Audubon Society

University of Wisconsin-Madison