Professor, Environmental Sciences, University of Virginia

Environment and Climate Change Canada

Distinguished Professor, Texas A&M University

Professor of Biological Science, University of Lethbridge

Explorer in Residence, National Geographic Society

Professor of Ecology

Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, NL

Professor of Ecology and Evolutionary Biology, Yale University

Professor, Center for Limnology, University of Wisconsin-Madison

Rachel Carson Professor of Marine Conservation Biology, Duke University