Professor of Rangeland Ecology & Management, Colorado State University

Professor, University of the Philippines Los Banos

Van Hall Larenstein University of Applied Sciences

Associate Professor, Seattle University

Center for International Forestry Research

Canada Research Chair in Human-Environment Interactions, The University of Winnipeg

Institute for Sustainable Earth and Resources, Universitas Indonesia

Oregon State University

University of the Witwatersrand

Professor, Institute of Resource Assessment, University of Dar es Salaam