Pesquisador Científico VI, Instituto de Pesquisas Ambientais, SP

Department of Plant and Microbial Biology, North Carolina State University

DR, IRD, IEES-P

Royal Botanic Garden Edinburgh and University of Edinburgh

University of Western Austrlia

Professor of Earth System Science and Policy, University of North Dakota

Professor, University of São Carlos

Texas A&M University

Max Planck Institute for Biogeochemistry

Botany Department, Rhodes University