Aimo Kaarlo Cajander 
Knowledge on immigration of plant species to Finland
Cajander A. K. (1921). Knowledge on immigration of plant species to Finland. Acta Forestalia Fennica vol. 21 no. 2 article id 7066. https://doi.org/10.14214/aff.7066
Abstract
The article is an abridged version of an essay published in the “Lännetär” (a book published in Finnish on the occasion of the 50th birthday of Professor E. N. Setälä). The article presents the main points of the plant migration to Finland after the glacial period. The research method was based on J. A. Palmen’s work on flyways of the birds. Some results are achieved through plant paleontological studies, others rely on the current distribution of the species.
Some species, such as trees birch, spruce and pine have migrated widely in Finland and there isn’t any specific migration way to be found. Those species do not have any specific preconditions for their habitat and adapt also to barren soils. Species that require more specific habitats can migrate only through ways where those preconditions are available.
Keywords
ice age;
immigration;
plant species;
glacial period
Published in 1921
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