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Article

Bacterioneuston in Lake Baikal: Abundance, Spatial and Temporal Distribution

Limnological Institute Siberian Branch of the Russian Academy of Sciences, 3, Ulan-Batorskaya, Irkutsk 664033, Russia
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Int. J. Environ. Res. Public Health 2018, 15(11), 2587; https://doi.org/10.3390/ijerph15112587
Received: 17 October 2018 / Revised: 12 November 2018 / Accepted: 18 November 2018 / Published: 19 November 2018
An aquatic surface microlayer covers more than 70% of the world’s surface. Our knowledge about the biology of the surface microlayer of Lake Baikal, the most ancient lake on Earth with a surface area of 31,500 km2, is still scarce. The total bacterial abundance, the number of cultured heterotrophic temporal bacteria, and the spatial distribution of bacteria in the surface microlayer and underlying waters of Lake Baikal were studied. For the first time, the chemical composition of the surface microlayer of Lake Baikal was determined. There were significant differences and a direct relationship between the total bacterial abundance in the surface microlayer and underlying waters of Lake Baikal, as well as between the number of cultured heterotrophic bacteria in studied water layers in the period of summer stratification. In the surface microlayer, the share of cultured heterotrophic bacteria was higher than in the underlying waters. The surface microlayer was characterized by enrichment with PO43−, total organic carbon and suspended particulate matter compared to underlying waters. A direct relationship was found between the number of bacteria in the surface microlayer and environmental factors, including temperature, total organic carbon and suspended particulate matter concentration. View Full-Text
Keywords: environmental factors; bacterioneuston; Lake Baikal; surface microlayer; total bacterial abundance; number of cultured heterotrophic bacteria environmental factors; bacterioneuston; Lake Baikal; surface microlayer; total bacterial abundance; number of cultured heterotrophic bacteria
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MDPI and ACS Style

Galachyants, A.D.; Tomberg, I.V.; Sukhanova, E.V.; Shtykova, Y.R.; Suslova, M.Y.; Zimens, E.A.; Blinov, V.V.; Sakirko, M.V.; Domysheva, V.M.; Belykh, O.I. Bacterioneuston in Lake Baikal: Abundance, Spatial and Temporal Distribution. Int. J. Environ. Res. Public Health 2018, 15, 2587. https://doi.org/10.3390/ijerph15112587

AMA Style

Galachyants AD, Tomberg IV, Sukhanova EV, Shtykova YR, Suslova MY, Zimens EA, Blinov VV, Sakirko MV, Domysheva VM, Belykh OI. Bacterioneuston in Lake Baikal: Abundance, Spatial and Temporal Distribution. International Journal of Environmental Research and Public Health. 2018; 15(11):2587. https://doi.org/10.3390/ijerph15112587

Chicago/Turabian Style

Galachyants, Agnia D., Irina V. Tomberg, Elena V. Sukhanova, Yulia R. Shtykova, Maria Y. Suslova, Ekaterina A. Zimens, Vadim V. Blinov, Maria V. Sakirko, Valentina M. Domysheva, and Olga I. Belykh. 2018. "Bacterioneuston in Lake Baikal: Abundance, Spatial and Temporal Distribution" International Journal of Environmental Research and Public Health 15, no. 11: 2587. https://doi.org/10.3390/ijerph15112587

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