Abstract
The species composition and community structure of soil-inhabiting testate amoebae communities have been studied in biotopes of different types in the southern tundra and forest-tundra of the Tazovskaya Lowland, Western Siberia. A total of 93 species and forms have been identified. It has been found that the species richness of testate amoebae is much lower in dry than in moist biotopes due to a lower level of beta-diversity, with alpha diversity being the same (on average, 16.9 and 17.1 species per sample, respectively). Factors acting at the microbiotope level (biotope type and moisture) play the most important role in the formation of species richness; biotope features (soils and vegetation) are second in importance. In moist habitats, local communities of testate amoebae from different microbiotopes (mosses, lichens, or litter) are fairly similar in species structure, and communities from different moist biotopes are heterogeneous. In dry areas, the opposite situation is observed: local communities differ at the microbiotope level but are similar at the biotope level. The abundance of testate amoebae in moist biotopes reaches 200 × 103 ind./g dry soil, being an order of magnitude lower in dry biotopes.
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Original Russian Text © Yu.A. Mazei, V.A. Chernyshov, 2011, published in Zoologicheskii Zhurnal, 2011, No. 5, pp. 515–523.
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Mazei, Y.A., Chernyshov, V.A. Testate amoebae communities in the southern tundra and forest-tundra of Western Siberia. Biol Bull Russ Acad Sci 38, 789–796 (2011). https://doi.org/10.1134/S1062359011080036
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DOI: https://doi.org/10.1134/S1062359011080036