The zoogeographical significance of the birch zone in Fennoscandia

Valle, K. J.

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K. J. Valle

Fennoskandian koivuvyöhykkeen eläinmaantieteellisestä merkityksestä

Valle K. J. (1934). Fennoskandian koivuvyöhykkeen eläinmaantieteellisestä merkityksestä. Acta Forestalia Fennica vol. 40 no. 13 article id 7290. https://doi.org/10.14214/aff.7290

English title: The zoogeographical significance of the birch zone in Fennoscandia

Abstract

The subarctic-subalpine mountain birch forest zone discerns Fennoscandia from other northern regions. The zone offers protection against wind to animal life, protects soil from evaporation and increases humidity. The article reviews distribution of vertebrate and butterfly species in the birch forest zone. There are no vertebrates that occur solely in the birch forest zone, and only few live mostly in the zone. Many species live either both on the birch forest zone and the treeless fell area above it, or in the birch forest zone and coniferous zone below it. Similarly, no butterflies occur only in the birch forest zone, but the zone is the main habitat for some species. Consequently, the subarctic-subalpine birch forest zone cannot be considered to be an independent ecozone but a transitional zone between regio silvatica and regio arctica that is nearer to the northern coniferous zone than the fell region

The PDF includes a summary in German.

Original keywords
tunturikoivu; koivuvyöhyke; eläinmaantiede; maaselkärankaiset; suurperhoset

English keywords
Betula pubescens subsp. czerepanovii; vertebrate; subarctic-subalpine birch forest zone; fell area; mountain birch; butterfly

Published in 1934

Available at https://doi.org/10.14214/aff.7290 | Download PDF

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