Map of the study area and location of sampling sites in 2013 and 2014.
Samples were taken in (A) Kanajorsuit Bay, Greenland (N 64.44632, W 51.57724), between 27 March and 5 April, 2013, and in (B) Kobbefjord, Greenland (N 64.15340, W 51.42275), between 12 and 21 March, 2014.