1. Department of Environmental Microbiology Eawag, Swiss Federal Institute of Aquatic Science and Technology Überlandstrasse 133 8600 Dübendorf Switzerland
2. Institute for Hygiene and Applied Immunology Water Hygiene Medical University of Vienna 1090 Vienna Austria
3. Interuniversity Cooperation Center Water and Health Gumpendorferstr. 1a 1060 Vienna Austria
4. Department of Biological Oceanography Royal Netherlands Institute for Sea Research (NIOZ) 1790 AB Den Burg Texel The Netherlands
5. Aquatic Microbiology Institute for Biodiversity and Ecosystem Dynamics University of Amsterdam Amsterdam The Netherlands
6. Joanneum Research, Institute for Water, Energy and Sustainability Research Group Water Resources Management Elisabethstrasse 18/II 8010 Graz Austria
7. Research Group Environmental Microbiology and Molecular Ecology Institute of Chemical Engineering Gumpendorferstr. 1A 1060 Vienna Austria