SRP404576 PRJNA894377 Melting glaciers might impose regime shifts in Greenland fjords Water samples were collected in different fjord systems adjacent to the Greenland Ice Sheet along a latitudinal gradient from 64 to 74N during research cruises in August of 2016 and July 2019 with RV Sanna. Samples were filtered through 0.45 um nitrocellulose filters (500 to 1000 mL) and the V4 region of the 18S rRNA gene amplified