Ronnie N Glud¹, Bo Thamdrup², Matthias Zabel³, Morten Larsen¹, Anni Glud¹, Hamed Sanei⁴, Robert Turnewitsch⁵, Kazumasa Oguri⁶, Alan J Jamieson⁷, Heather Ann Stewart⁸, Ashley Alun Rowden⁹ and Frank Wenzhofer¹⁰, (1)University of Southern Denmark, Department of Biology, Odense, Denmark, (2)University of Southern Denmark, Odense, Denmark, (3)MARUM - University of Bremen, Sediment Geochemistry, Bremen, Germany, (4)Aarhus University, Department of Geoscience, Aarhus C, Denmark, (5)Scottish Association for, Oban, Argyll, United Kingdom, (6)Japan A Marine-Earth Sci Tech, Yokosuka, Japan, (7)Newcastle University, School of Natural and Environmental Science, Tyne and Wear, United Kingdom, (8)British Geological Survey, Energy and Marine Geosciences, Edinburgh, United Kingdom, (9)National Institute of Water & Atmospheric Research, Wellington, New Zealand, (10)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany