Cédric Leo Meunier¹, Josefin Schmidt², Antonia Ahme³, Maarten Boersma⁴, Areti Balkoni⁵, Bernhard Fuchs⁶, Ruben L. Schulte-Hillen⁷, Katharina Berg⁸, Johannes J Rick⁹, Lea Blum⁶, Herwig Stibor¹⁰, Maria Stockenreiter¹¹, Jan Brüwer⁶, Karen H Wiltshire⁹, Luis Gimenez², Sylke Wohlrab¹², Maite Guignard⁵, Inga Kirstein¹³, Bernd Krock¹⁴, Simon Tulatz⁸, Felix Weber¹⁵ and Antje Wichels², (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Shelf Sea System Ecology, Helgoland, Germany, (2)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Helgoland, Germany, (3)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Marine Biogeosciences, Bremerhaven, Germany, (4)Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, List, Germany, (5)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Sylt, Germany, (6)Max Planck Institute for Marine Microbiology, Bremen, Germany, (7)Albert-Ludwigs-Universität Freiburg, 79104 Freiburg i.Br. Germany, Freiburg, Germany, (8)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Bremerhaven, Germany, (9)Alfred Wegener Institute Helmholtz-Wadden Sea Station Sylt, Coastal Ecology, List, Germany, (10)Ludwig-Maximilians-Universität München, Department of Biology II, Munich, Germany, (11)Ludwig-Maximilians-Universität München, Limnologische Forschungsstation Seeon, Munich, Germany, (12)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Ecological Chemistry, Bremerhaven, Germany, (13)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Helgoland, Germany, (14)Alfred Wegener Insitute Helmholtz-Center for Polar and Marine Research, Bremerhaven, Germany, (15)Alfred Wegener Institue Helmholtz-Center for Polar and Marine Research, Helgoland, Germany