Localities codes:

ROT  = Rothera Station, Adelaide Island, West Antarctic Peninsula (67°32’S; 68°06’W)
SB   = South Bay, Anvers Island, West Antarctic Peninsula (64°54’S; 63°32’W)
BAOH = Covadonga Bay, West Antarctic Peninsula (63°22’S; 58°09’W)
Ross = James Ross Island, East Antarctic Peninsula (63°55’S; 57°15W)
FB   = Fildes Bay, King George Island, South Shetland Islands (62°12’S; 58°56’W)
BALM = Admiralty Bay, King George Island, South Shetland Islands (62°05’S; 58°27’W)
IE   = Elephant Island, South Shetland Islands (61°07’S; 54°53’W)
ORC  = South Orkney Island (60°38’S; 44°41’W)
SG   = South Georgia Island (54°14’S; 36°23’W)

Accession numbers for the 28 different haplotypes: KF261314 – KF261341.