Sina Schorn¹, Jana Milucka², Camilla Capelli³, Jon S. Graf², Philipp F. Hach², Clara Hiel¹, Marcel M.M. Kuypers², Morten Larsen⁴, Gaute Lavik², Moritz F Lehmann⁵, Sten Littmann², Elizabeth K. Robertson¹, Carsten Johnny Schubert⁶, Daan R. Speth⁷, Bo Thamdrup⁴, Alisa Wuest¹, Jakob Zopfi⁵ and Laura Bristow¹, (1)University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden, (2)Max Planck Institute for Marine Microbiology, Department of Biogeochemistry, Bremen, Germany, (3)University of Applied Sciences and Arts of Southern Switzerland (SUPSI), Institute of Earth Sciences, Mendrisio, Switzerland, (4)University of Southern Denmark, Department of Biology, Odense, Denmark, (5)University of Basel, Department of Environmental Sciences, Basel, Switzerland, (6)EAWAG Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum, Switzerland, (7)University of Vienna, Division of Microbial Ecology, Center for Microbiology and Environmental Systems Science, Vienna, Austria