Maria Bashenkhaeva

Limnological Institute

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Yelena V. Likhoshway

Limnological Institute

Yulia Zakharova

Siberian Branch of the Russian Academy of Sciences

Darya P. Petrova

Siberian Branch of the Russian Academy of Sciences

Yuri Galachyants

Siberian Branch of the Russian Academy of Sciences

L.I. Kopyrina

Institute of Oil and Gas Problems of the Siberian Branch of the RAS

Alena Firsova

Siberian Branch of the Russian Academy of Sciences

Yekaterina D. Bedoshvili

Limnological Institute

ЛА

Л. А. Титова

Voronezh State Medical Academy named after N.N. Burdenko

Yurij Bukin

Siberian Branch of the Russian Academy of Sciences

ИВ

И. В. Ханаев

Siberian Branch of the Russian Academy of Sciences

Cooperative Institutions

Siberian Branch of the Russian Academy of Sciences

Limnological Institute

Russian Academy of Sciences

Irkutsk Research Institute of the Forestry Industry

Lomonosov Moscow State University

Institute of Chemical Biology and Fundamental Medicine

Kemerovo State Medical Academy

National Research University of Electronic Technology

Institute of Petroleum Geology and Geophysics

Baikal Nature Reserve

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Seasonal Succession and Coherence Among Bacteria and Microeukaryotes in Lake Baikal

Microbial Ecology (2021)

И. С. Михайлов Yuri Galachyants Yurij Bukin Darya P. Petrova Maria Bashenkhaeva

Pyrosequencing

10.1007/s00248-021-01860-2

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Citations (18)

Comparative analysis of free-living and particle-associated bacterial communities of Lake Baikal during the ice-covered period

Journal of Great Lakes Research (2020)

Maria Bashenkhaeva Yuri Galachyants И. В. Ханаев M. V. Sakirko Darya P. Petrova

Verrucomicrobia

10.1016/j.jglr.2020.03.015

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Citations (21)

Microeukaryotic Communities of the Long-Term Ice-Covered Freshwater Lakes in the Subarctic Region of Yakutia, Russia

Diversity (2023)

Yuri Galachyants Yulia Zakharova Maria Bashenkhaeva Darya P. Petrova L.I. Kopyrina

Currently, microeukaryotic communities of the freshwater arctic and subarctic ecosystems are poorly studied. Still, these are of considerable interest due to the species biogeography and autecology as well as global climate change. Here, we used high-throughput 18S rRNA amplicon sequencing to study the microeukaryotic communities of the large subarctic freshwater lakes Labynkyr and Vorota in Yakutia, Russia, during the end of the ice cover period, from April to June. By applying the statistical methods, we coupled the microeukaryotic community structure profiles with available discrete factor variables and hydrophysical, hydrochemical, and environmental parameters. The sub-ice layer and the water column communities were differentiated due to the temporal change in environmental conditions, particularly temperature regime and electric conductivity. Additionally, the community composition of unicellular eukaryotes in lakes Labynkyr and Vorota was changing due to seasonal environmental factors, with these alterations having similar patterns in both sites. We suggest the community developed in the sub-ice layer in April serves as a primer for summer freshwater microeukaryotes. Our results extend the current knowledge on the community composition and seasonal succession of unicellular eukaryotes within subarctic freshwater ecosystems.

Subarctic climate

Freshwater ecosystem

10.3390/d15030454

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Citations (1)

Культивируемые бактерии из подледных альго- бактериальных сообществ озера байкал

Acta Biologica Sibirica (2017)

Maria Bashenkhaeva Ю Р Захарова

Source

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Variability of Microbial Communities in Two Long-Term Ice-Covered Freshwater Lakes in the Subarctic Region of Yakutia, Russia

Microbial Ecology (2021)

Yulia Zakharova Maria Bashenkhaeva Yuri Galachyants Darya P. Petrova И. В. Томберг

Subarctic climate

Biogeochemical Cycle

Psychrophile

10.1007/s00248-021-01912-7

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Citations (7)

Two New Species, Mallomonas baicalensis sp. nov. and M. grachevii sp. nov. (Synurales Chrysophyceae), Found under the Ice of Lake Baikal

Water (2023)

Anna Bessudova Alena Firsova Diana Hilkhanova М. М. Макаров M. V. Sakirko

Two new species of silica-scaled chrysophytes (order Synurales) from the genus Mallomonas and sections Striatae Mallomonas baicalensis sp. nov. and M. grachevii sp. nov. found at the bottom surface of the ice of Lake Baikal, with a structure of siliceous scales, are described using electron microscopy. The main and unique distinctive feature of M. baicalensis is its dome with a long spine and the slightly asymmetrical shape of its scales, regardless of their position on the cell. We could not find the bristles, and if there are spines on the dome, we can assume that they may be missing. The main distinguishing feature of M. grachevii is the presence of a secondary layer on the shield except at the angle of the V-rib, in which an area without the secondary layer, a “window”, is present with numerous pores, and the first transverse rib closest to the dome is thickened. Among the Mallomonas species from the section Striatae, only M. siveri and M. baicalensis have a group of rimmed pores in the corner of the V-rib. As a result of our research, the number of Mallomonas species of the section Striatae found in Lake Baikal has increased to eight, of which, in addition to the new species, only one species is widespread, and the rest are rare, previously foundin oligotrophic/mountain water bodies.

Dome (geology)

10.3390/w15122250

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Citations (2)

Structure of bacterial, archaeal and microeukaryotic communities of upper sediment in Lake Vorota, Pole of Cold (Yakutia)

Limnology and Freshwater Biology (2020)

Maria Bashenkhaeva Yu. R. Zakharova L.I. Kopyrina Darya P. Petrova Yu. P. Galach’yants

Upper layer of the bottom sediment is important as an area where freshly deposited sediment is remineralized. In this work we have described structure and diversity of bacterial, archaeal and microeukaryotic communities from upper sediment of Lake Vorota (Yakutia). According to high-throughput sequencing of 16S fragment, most common bacteria are Cyanobacteria, Deltaproteobacteria, Bacteroidota and Desulfobacteriota; archaeal community is dominated by Halobacteriota. Analysis of 18S sequences from microscopic eukaryotes has revealed the predominance of Diatomea.

Deltaproteobacteria

10.31951/2658-3518-2020-a-4-963

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Finding of a putative Lake Baikal endemic, Lindavia minuta, in distant lakes near the Arctic pole in Yakutia (Russia)

Diatom Research (2020)

Мarina Usoltseva L.I. Kopyrina Л. А. Титова А. В. Морозов Alena Firsova

In the northern lakes of Yakutia, Vorota and Labynkyr, which are 2100 kilometres northeast of Lake Baikal, we found a putative Lake Baikal endemic, Lindavia minuta. Morphological analysis and non-metric multidimensional scaling showed that L. minuta populations from Yakutian and Transbaikalian lakes belong to the same (morpho) species. The possible dispersal history is discussed. The most probable hypothesis is that L. minuta was present in the Baikal basin during several Pleistocene glaciation cycles, and since Lake Baikal was previously connected to the River Lena, it is possible that there was a stable population of this species in the river, and that the river carried some cells to other suitable habitats. During glaciated periods, L. minuta could also have survived for longer periods in several ice dam lakes and possibly dispersed further north-east to the lakes in Yakutia.

10.1080/0269249x.2020.1747551

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Citations (8)

Sub-Ice Microalgal and Bacterial Communities in Freshwater Lake Baikal, Russia

Microbial Ecology (2015)

Maria Bashenkhaeva Yulia Zakharova Darya P. Petrova И. В. Ханаев Yuri Galachyants

Verrucomicrobia

Acidobacteria

Planctomycetes

Dinoflagellate

10.1007/s00248-015-0619-2

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