1Natural History Museum of Denmark, Sølvgade 83S, DK-1307 Copenhagen K, Denmark
2National Institute of Aquatic Resources, DTU Aqua, Section for Oceanecology and Climate, Technical University of Denmark, DTU, Kavalergården 6, DK-2920 Charlottenlund, Denmark
3Greenland Climate Research Centre, Greenland Institute of Natural Resources, Nuuk, Greenland
4Alfred-Wegener-Institut für Polar-und Meeresforschung, Ökologische Chemie, Am Handelshafen 12, 27570 Bremerhaven, Germany
5Department of Bioscience, Roskilde, Aarhus University, Frederiksborgvej 399, PO Box 358, 4000 Roskilde, Denmark