The study is based on pollen analyses of varves collected from Kivennapa area. The varves contain the plant fossils of Dryas sp., which were the typical plants of the era. Geological samples form the Russia side of the border are also utilized. The study describes the results regarding the late-glacial forests and the vegetation that consist mostly of Dryas sp. and the climate in the area in the late-glacial era.
The late-glacial era in the Karelian Isthmus should be divided into two periods and better named as glacial and subglacial eras, also known as arctic and subarctic eras.
The PDF contains a summary in Finnish.