Professor of Evolutionary Biology, University of Toronto

Professor of Plant Biology, University of Georgia

University of KwaZulu-Natal

Professor of Ecology and Evolutionary Biology, University of Toronto

Faculty & Emeritus Professor of Biological Sciences, University of Calgary

FRS, University of Canterbury, New Zealand

Professor in Plant Ecology, Uppsala University

Kyoto University, Professor

Investigador Titular C ( CIEco, UNAM)