Timothy G Ferdelman¹, Julia Duerschlag¹, Dr. Wiebke Mohr¹, Miriam Philippi¹, Soeren Ahmerkamp², Frank J Pavia³, Bernhard Fuchs¹ and Marcel M.M. Kuypers⁴, (1)Max Planck Institute for Marine Microbiology, Bremen, Germany, (2)Leibniz Institute for Baltic Sea Research Warnemünde, Rostock, Germany, (3)University of Washington, School of Oceanography, Seattle, United States, (4)Max Planck Institute for Marine Microbiology, Department of Biogeochemistry, Bremen, Germany