Ove Dahl Plantegeografiske undersøgelser i det indre af Romsdals Amt med tilstødende fjeldtrakter, I og II

Abstract

Dahl: Plantgeographical studies in the inner of Romsdal with adjacent montane regions I, II. Skriftene 1893 and 1894.

Ove Christian Dahl (1862-1940) was one of the most industrious Norwegian botanists of all times. He literally walked across Norway bit by bit from Lindesnes to Nordkapp every growth-season from 1890 to 1920 (with one exception, 1902), and this resulted in a series of papers which recorded his finds. However, he always had a clear plantgeographical aim, being very engaged in proving the theory of his beloved teacher Axel Blytt, about the immigration of the Norwegian flora in times of changing climates. These particular papers concern the very interesting flora of Romsdal with the adjacent Trollheimen, where the alpine plants are of particular importance in relation to the theory of glacial survival that was developed as a side-product of Blytt’s theory, particularly by the Swede R. Sernander. Dahl discovered several of the so-called centric alpine plantsthere, but explains their disjunctions (sorted in five areas) to be a result of the ecological conditions as Sernander’s later published ideas were not known to him.