Klaipėdos universitetas

The author maintains that the soils formed by the Pomeranian Glacier during the Bölling Interstadial at the time of Hamburgian Culture stood under rising moisture and were not yet lixiviated enough. The main food sources of reindeer, especially reindeer-moss (Cladonia rangiferina) and dwarf birch-trees (Betula nana), require a sandy, dry, non-calcareous soil and therefore could not flourish in the highly calcareous moraine clay.