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The macroalgae nostoc zetterstedtii distribution and environmental demands


, : The macroalgae nostoc zetterstedtii distribution and environmental demands. Fauna och Flora Naturhistoriska Riksmuseet 81(4-5): 201-202

The blue-green macroalgae Nostoc zetterstedtii can rarely be found in oligotrophic clearwater lakes. An investigation has been carried out on many lakes, 18 of which were known to have contained Nostoc zetterstedtii in the 1920 s. On this occasion the algae was found in seven of these lakes. Eutrofication, acidification, and increasing supply of humus coming into the lake threatens the existence of the algae. Today there are 33 Swedish lakes which are known to contain Nostoc zetterstedtii.

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