1. Department of Environmental Microbiomics Institute of Environmental Technology, Technical University of Berlin Berlin Germany
2. Department of Plankton and Microbial Ecology Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB) Stechlin Germany
3. Groupe de Recherche Interuniversitaire en Limnologie, Département des Sciences Biologiques Université du Québec à Montréal Montréal QC Canada
4. Department of Ecology Radboud University Nijmegen The Netherlands
5. Department of Earth and Environmental Sciences University of Waterloo Waterloo ON Canada
6. Chemical Oceanography Unit University of Liège Liège Belgium