1. Microbial Systems Ecology, Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
2. Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research and Utrecht University, Den Burg, The Netherlands
3. Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Utrecht, The Netherlands
4. Institute of Microbiology and Biotechnology, Rheinische Friedrich-Wilhelms University, Bonn, Germany
5. Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, The Netherlands
6. Winogradsky Institute of Microbiology, Research Centre of Biotechnology, Russian Academy of Sciences, Moscow, Russia
7. Department of Biotechnology, Delft University of Technology, Delft, The Netherlands