Professor of Ecology and Conservation Biology, The Australian National University

Professor of Ecosystem Science, University of Washington

Burton V. Barnes Collegiate Professor of Ecology, University of Michigan

Professor of Ecosystem Science, University of Idaho

Geography, CU Boulder

Northern Arizona University

Professor of Tropical Forest Ecology, Wageningen University, The Netherlands

University of the Sunshine Coast and University of Connecticut

Regents Professor, Natural Resources, U Arizona

Regents Professor Emeritus of Dendrochronology, Lab. of Tree-Ring Research, Univ. AZ