1. Department of Natural Resource Sciences, McGill University, Ste-Anne-de-Bellevue, QC H9X 3 V9, Canada
2. Centre d’Études Biologiques de Chizé (CEBC), UMR 7372−CNRS & La Rochelle Université, 79360 Villiers-en-Bois, France
3. Norwegian Polar Institute, Fram Centre, 9296 Tromso̷, Norway
4. Département de Biologie, Université Laval, Québec, QC G1 V0A6, Canada
5. Norwegian Institute for Nature Research, Fram Centre, 9296 Tromso̷, Norway
6. Norwegian Institute for Nature Research, 7485, Trondheim, Norway
7. Akvaplan-niva AS, Fram Centre, 9296 Tromso̷, Norway
8. Norwegian Institute for Air Research (NILU), Fram Centre, 9296 Tromso̷, Norway