Professor, University of Colorado at Boulder

Douglas Provostial Professor, Stanford University

University of Massachusetts-Amherst USA and Northeastern University, Shenyang, China

NIOZ Netherlands Institute for Sea Research and Utrecht University

Professor, Dept. Environmental Sciences, University of Virginia

Cary Institute of Ecosystem Studies

Cornell Universty

Soil Science of Temperate Ecosystems, Agricultural Soil Science, University of Göttingen

Cornell University

University of Hawaii