Abstract
Urban soils, differing in the intensity of anthropogenic impacts, were studied in several largest (Krasnodar), large (Sochi and Simferopol), and moderately large (Maikop) cities of southern Russia. The obtained data on the diversity of bacterial complexes revealed that urban soils with high anthropogenic load (Sochi, Simferopol, and Krasnodar) undergo considerable transformation of natural bacterial complexes with a sharp increase in representatives of Enterobacteriaceae family. Along with microorganisms indicative of the sanitary status of urban soils (E. coli and En. faecalis) the soils also contain bacteria of Klebsiella, Enterobacter, Citrobacter, and Serratia genera; some of their species may cause intestinal and allergic diseases. In the urban soil of Sochi, spores of sulfite-reducing Clostridia, including Clostridium perfringens, have been found. In the urban soil of Maikop with the lowest population density among the studied cities, changes in the structure of natural bacterial complexes are virtually absent. The abundances of sanitary-indicative microorganisms (Escherichia coli and Enterococcus faecalis) in urban soils of all the studied cities, except for Maikop, exceeded the normative parameter for sanitary-safe clean soils (<10 CFU/g soil).
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This work was supported by the Russian Foundation for Basic Research, project no. 19-29-05252 mk.
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Translated by I. Bel’chenko
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Glushakova, A.M., Lysak, L.V., Umarova, A.B. et al. Bacterial Complexes of Urbanozems in Southern Cities of Russia. Eurasian Soil Sc. 54, 257–263 (2021). https://doi.org/10.1134/S1064229321020058
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DOI: https://doi.org/10.1134/S1064229321020058