Distinguished Professor, Western Sydney University, Macaulay Institute

Max Planck Institute for Biogeochemistry

University of North Carolina, Greensboro

Environment, Soils and Land-Use Department, Teagasc, Johnstown Castle

Manaaki Whenua - Landcare Research

Fenner School of Environment and Society, Australian National University

Conservation Ecology, University Marburg

Professor, University of Auckland

Associate Professor, Scientia Fellow, The University of New South Wales, Australia

Professor of Oceanography & Coastal Sciences, Louisiana State University