1. Limnology and Bio‐Oceanography, Center of Functional EcologyUniversity of Vienna, Althanstrasse 14 1090 Vienna Austria
2. Institut de Ciències del Mar, ICM‐CSIC, Pg Marítim de la Barceloneta 37‐49 08003 Barcelona Catalonia Spain
3. Department of Subsurface Geobiological Analysis and ResearchJapan Agency for Marine‐Earth Science and Technology, Natushima 2‐15 Yokosuka Kanagawa Japan
4. Center for Marine ResearchRuder Boskovic Institute, G. Paliaga 5 52210 Rovinj Croatia
5. NIOZ, Department of Marine Microbiology and BiogeochemistryRoyal Netherlands Institute for Sea Research, Utrecht University, PO Box 59, Alberta Den Burg 1790 The Netherlands