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Abstract

In surface horizons of Gelic Regosols. Gelic Gleysols and Gelic Cambisols from 5 sites in Kaffiöyra. 26 taxa of blue-green algae have been determined. Species of the genera Gleocapsa, Schizothrix, Tolypothrix and Calothix were the most common. In Gelic Regosols blue-green algae formed during the last 100 years the 0.5 cm thick horizon A, containing 8.6% of humus.
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Abstract

104 algal taxa (31 blue-green algae, 48 diatoms and 25 green algae) were identified from 18 stands of tundra soils in the Kaffiöyra Plain (Oscar II Land, NW Spitsbergen). Basing on numerical analysis by the reciprocal averaging method and on hierarchic classification based on ."distinguishing species", two groups of stands were distinguished: moist and wet ones characterized by diatoms, and dry and drying ones characterized by blue-green algae.
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