New research at Laboratory of Chronoloy shows: Dates for early cultivation in Finland obtained from pollen analysis and remains from archaeological sites correlate with the changes in population size. The results from these two independent proxies correlate strongly with one another indicating that population size. This means likely that the advance of farming were closely linked to population increase.
The results show that the adaptation and development of farming in this area was a complex process comprising several stages and with major differences between regions. The most intensive expansion having occurred in and after the Iron Age. It is therefore more accurate to describe the introduction of farming into the area as a long-lasting process, rather than an event.
Original article: http://journals.sagepub.com/doi/pdf/10.1177/0959683616660164