1. Institute of Biogeochemistry and Marine Chemistry, University of Hamburg, Bundesstrasse 55, 20146 Hamburg, Germany.
2. Max Planck Institute for Marine Microbiology, Celsiusstrasse 1, 28359 Bremen, Germany.
3. Alfred Wegener Institute for Polar and Marine Research, 27515 Bremerhaven, and International University Bremen, 28725 Bremen, Germany.
4. Geowissenschaftliches Zentrum, University of Göttingen, Goldschmidtstrasse 3, 37077 Göttingen, Germany.
5. Institute of Microbiology, Russian Academy of Sciences, pr. 60-letiya Oktyabrya 7, k. 2, Moscow, 117811, Russia.
6. Institute of Biology of Southern Seas, National Academy of Sciences of Ukraine, pr. Nakhimova 2, Sevastopol, Ukraine.