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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

In the material collected in 26 stations along the course of three creeks in the vicinity of Polish Antarctic Station 183 taxa of algae have been identified: 25 of Cyanophyta, 123 of Bacillariophyceae, 2 of Xanthophyceae, 2 of Chrysophyceae and 31 of Chlorophyta. The highest species diversity was found in the algal community in Creek II (132 taxa), the second place was occupied by the "Petrified Forest Creek" (97 taxa), and the least diversified algal community was that from the "Ornithologists' Creek" (73 taxa).
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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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