L. S. Kravtsova

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Species composition and distribution of macrozoobenthos have been studied in the shallow water zone (0–20 m) of Southern Lake Baikal (Bolshiye Koty Bay). The amount of taxa recorded reached up to 244 species distributed among 16 distinctive communities of complex structure and high species diversity. The Shannon index of specific diversity was found to vary(More)
The spatial distribution of Elodea canadensis Mich. was studied in the southern and central basins of Lake Baikal in 2006–2009. E. canadensis has naturalized successfully in the lake ecosystem. It coexists here with the indigenous submerged macrophytes under its canopy or forms either rarefied undergrowth or separate monomorphic spots. The invasion of this(More)
The faunal composition, structure of the zoobenthos communities, and seasonal changes in two springs in the south of Irkutsk area are investigated. Both springs have the water temperature 4–5°C all year round. The fauna consists of widely distributed hydrobionts, crenobionts, stygobionts, and near-water organisms. Arctic relicts and elements of the Lake(More)
The population structure of endemic species Sergentia baicalensis Tshern. (Diptera, Chironomidae) from Lake Baikal was studied using the first subunit of the cytochrome c oxidase mitochondrial gene (CO1). Two populations inhabiting different basins of this lake, the southern-central and northern, were detected. It was confirmed that the divergence time of(More)
The Chernobyl accident resulted in environmental radionuclide pollution in many areas, including the Dnepr river. The water and fish of the Kakhovsk Water Reservoir were under study and tested for 90Sr and 137Cs. It was found that the content of 137Cs achieved pre-accident levels and that of 90Sr was 4-6 times higher than that prior to the accident. The(More)
The body size of larvae and the age structure of populations of three chironomid species (Chironomidae) from the Lake Baikal littoral was studied. Young larvae 1.0–2.6 mm long were abundant during the whole period investigated (August 2000–August 2001). Parameters of the equation that allows determining the weight of midge larvae by the width of their head(More)
The phylogenetic relationships between Baikalian endemic green alga Draparnaldioides simplex C. Meyer et Skabitch., 1976 and holarctic taxa of green algae have been studied using the 18S rDNA gene fragment and internal transcribed ITS1 and ITS2 spacers of nuclear DNA. The Baikalian genus Draparnaldioides was shown to be a separate taxon. The level of(More)
In shallow water areas of open Lake Baikal, filamentous green alga of the genus Spirogyra grows abundantly. Together with alga of the genus Ulothrix, it forms algal mats. According to our observations from 2010 to 2013, the spawning habitat conditions for the yellowfin sculpin Cottocomephorus grewingkii (Dybowski, 1874) (Cottidae) proved to be significantly(More)
The development of a fouling community at the surface of an artificial substrate in the littoral zone of Lake Baikal was studied. This epibenthic community was composed of 23 diatom species and 57 invertebrate species. The core community consisted of molluscs and caddisflies feeding mostly on diatoms. In Lake Baikal a fouling community develops in a(More)