Abstract
Lichens represent a very important plant group of primary producers in many arctic and subarctic areas (P. Kallio and Karenlampi, 1975). Their importance as nitrogen fixers, particularly in the dry ecosystems in continental climate areas, has been emphasized recently in different proceedings of the IBP Tundra work in Alaska (Alexander and Schell, 1973a, b) and in Scandinavia (Granhall and Selander, 1972; P. Kallio et al, 1972; Lid and Hansen, 1972; S. Kallio, 1973; P. Kallio, 1974). At Kevo (69°45’N, 27°01’E), which is a typical dry “tundra ecosystem” with very few legumes and alders, the N2 fixation studies have consequently focused on lichens. In wet ecosystem, free-living blue-green algae are more important (Granhall and Selander, 1972; Horne, 1972; Stutz, 1972; Alexander and Schell, 1973a, b; Schell and Alexander, 1973).
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Kallio, S., Kallio, P. (1975). Nitrogen Fixation in Lichens at Kevo, North-Finland. In: Wielgolaski, F.E. (eds) Fennoscandian Tundra Ecosystems. Ecological Studies, vol 16. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-80937-8_34
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