The study site, small (0.15 ha), shallow (mean depth of 1.5 m; for details see Poliakova et al. 2024) lake Tenndammen(N78°06.118′; E15°02.024′, altitude 5 m above sea level [a.s.l.]) is located about 1 km away from the Greenland Sea shore in the Colesdalen (Coles valley), Svalbard (Spitsbergen, Шпицберген). The research area is known as one of Svalbard’s biodiversity hotspots, with the highest number ...

We analysed the pollen and spores extracted from 73 samples of lacustrine sediments from Colesdalen in Svalbard (Lake Tenndammen) as well as 10 soil samples collected from the lake’s shores. In total, 56 pollen taxa were recorded from the sediments spanning the last 800 years, whilst 35 pollen types were found in the soil samples. Pollen was categorised as (i) regional (from Svalbard); (ii) ...