| Abstrakt: |
Fifty samples of bottom sediments were taken in 2016–2017 in the Kandalaksha Bay of the White Sea from the depth of 1.5–15.0 m, and 1419 colonies of mycelial fungi were obtained. Based on morphological and cultural features, a total of 136 morphotypes were classified, and 81 of these were identified down to the species level. Thirteen species were new to the White Sea. The most common species were Tolypocladium cylindrosporum, Penicillium chrysogenum, Tolypocladium inflatum, Penicillium glabrum, and the anamorph of Pseudogymnoascus pannorum. The dominance of Ascomycota was a common characteristic of the mycobiota due to the anamorphic species, and the class Sordariomycetes was the most diverse and numerous group. Assessment of species richness using a cumulative curve and the calculation of the expected total number of species adjusted using the Chao2 method evidenced that approximately 81% of the species diversity was found within the study. The ordination of samples by the nMDS method with the ANOSIM test showed the high importance of combining the samples into groups based on the year of sampling and type of sediment as well as the year of sampling and type of ecotope. Therefore, the type of sediment associated with the type of coast and the presence of fresh runoff were the most important factors for the formation of mycobiota. Moreover, the communities of mycelial fungi change from year to year in the studied bottom sediments. [ABSTRACT FROM AUTHOR] |
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