Abstract
The number and species diversity of yeasts in urban soils (urbanozems) affected by heating mains and in epiphytic yeast complexes of grasses growing above them were studied. The number of yeasts in the soil reached 103–104 CFU/g; on the plants, 107 CFU/g. Significant (by an order of magnitude) increase in the total number of soil yeasts in the zone of heating mains in comparison with the surrounding soil was found in winter period. Overall, 25 species of yeasts were isolated in our study. Yeast community of studied urbanozems was dominated by the Candida sake, an eurybiont of the temperate zone and other natural ecotopes with relatively low temperatures, but its share was minimal in the zone of heating mains. In general, the structure of soil and epiphytic yeast complexes in the zones of heating mains differed from that in the surrounding area by higher species diversity and a lower share of pigmented species among the epiphytic yeasts. The study demonstrated that the number and species structure of soil yeast communities in urban soils change significantly under the influence of the temperature factor and acquire a mosaic distribution pattern.
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Original Russian Text © A.N. Tepeeva, A.M. Glushakova, A.V. Kachalkin, 2018, published in Pochvovedenie, 2018, No. 4, pp. 486–492.
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Tepeeva, A.N., Glushakova, A.M. & Kachalkin, A.V. The Influence of Heating Mains on Yeast Communities in Urban Soils. Eurasian Soil Sc. 51, 460–466 (2018). https://doi.org/10.1134/S1064229318020114
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DOI: https://doi.org/10.1134/S1064229318020114