L. S. Kravtsova

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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 degrees C all year round. The fauna consists of widely distributed hydrobionts, crenobionts, stygobionts, and near-water organisms. Arctic relicts and elements of the(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 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)
350 In recent decades, much attention is paid to evidii dence of anthropogenic pollution of the Lake Baikal ecosystem. However, to date, largeescale changes in the flora in pelagic and coastal zones of the Lake Baikal have not been detected. Since the start of the Industrial Revolution in Siberia (the 1930s), no spee cies disappeared or emerged in the lake,(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)
A local eutrophication process is noted for the first time in Listvennichnyi Bay in Lake Baikal. Using morphological and molecular-genetic methods, species of filamentous green algae that form mats at site of the lake subjected to anthropogenic impact are identified. The presence of species of the genus Spirogyra Link., atypical for this part of the lake,(More)
Phylogenetic relationships between the endemic baicalian green algae Draparnaldioides simplex C. meyer et Skabitsch, 1976 and holarctic taxa of green algae were studied using the fragment of 18S rDNA and internal transcribed spacers ITS1 and ITS2 of nuclear DNA. We showed that the baicalian genus Draparnaldioides is a separate taxon. The genetic difference(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)
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