Simon Ramondenc¹, Fredrika (Maria) Norrbin², Marja Koski³, Richard Lampitt⁴ and Morten H. Iversen¹, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (2)Uit the Arctic university of Norway, Department of Arctic and Marine Biology, Tromsø, Norway, (3)National Institute of Aquatic Resources, Charlottenlund, Denmark, (4)National Oceanography Centre, Southampton, United Kingdom