Abstract

The complexes of soil microfungi of Heiss Island (Franz Joseph Land) in natural (upland) coenoses and coenoses affected by anthropogenic pollution were studied. Total 39 microfungi species were identified. Most species belong to ascomycetous anamorphic fungi. Most isolates are represented by species of Acremonium, Cadophora, Cladosporium, Geomyces, Mortierella, Phialophora, Phoma and Thelebolus and attributed not to psychrophilic strains, but to psychrotrophic ones that can grow in a wide range of temperatures. Low number of colony-forming units (from 50 to 1200 CFU per 1 g of soil) and limited species composition are typical of natural coenoses of polar desert. The soil mycobiota structure was changed under the influence of anthropogenic factors.

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