1. Max Planck Institute for Marine Microbiology Celsiusstrasse 1 D‐28359 Bremen Germany
2. Department of Microbiology and Ecosystem Science Division of Microbial Ecology University of Vienna Althanstrasse 14 A‐1090 Vienna Austria
3. Department of Geoscience University of Calgary Calgary 2500 University Drive AB T2N 1N4 Canada
4. Department of Limnology and Oceanography University of Vienna Althanstrasse 14 A‐1090 Vienna Austria
5. Department of Bioinformatics and Genetics Swedish Museum of Natural History Box 50007 SE‐104 05 Stockholm Sweden
6. Department of Marine Sciences Sven Lovén Centre for Marine Sciences Tjärnö University of Gothenburg Hättebäcksvägen 7 SE‐452 96 Strömstad Sweden
7. Department of Biological and Environmental Sciences University of Gothenburg Box 463 SE‐405 30 Göteborg Sweden
8. Faculty of Biology/Chemistry University of Bremen Bibliothekstrasse 1 D‐28359 Bremen Germany