Prof Oceanography, University of British Columbia

McCulloch Crosby Chair of Marine Biology, University of Southern California

Sorbonne University, Villefranche Oceanography Laboratory, France

Professor of Aquatic Microbial Ecology, University of Amsterdam, The Netherlands

Institut de Ciències del Mar, CSIC. Barcelona, Catalunya

Dept of Functional and Evolutionary Ecology at University of Vienna

University of British Columbia

Station Biologique de Roscoff, CNRS et Sorbonne Université

Senior Scientist at CNRS and Sorbonne University

HW Smith Professor emeritus of Biological Oceangr., Duke University