Taxonomic composition of Lake Baikal bacterioneuston communities
- Authors: Galach’yants A.D.1, Bel’kova N.L.1, Sukhanova E.V.1, Galach’yants Y.P.1, Morozov A.A.1, Parfenova V.V.1
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Affiliations:
- Limnological Institute, Siberian Branch
- Issue: Vol 86, No 2 (2017)
- Pages: 241-249
- Section: Experimental Articles
- URL: https://journals.rcsi.science/0026-2617/article/view/163037
- DOI: https://doi.org/10.1134/S0026261717020084
- ID: 163037
Cite item
Abstract
The taxonomic composition of microbial communities of Lake Baikal surface microlayer was studied by pyrosequencing of the 16S rDNA amplicons. Statistically reliable differences were found between bacterioneuston of the shallow and deep-water stations. The shallow station community was characterized by higher diversity than the deep-water one. While bacterioneuston communities were shown to be less diverse than the water column communities, their diversity was comparable to that of other biofilm associations. Microbial communities of Lake Baikal surface microlayer were shown to be similar to those of the water column in the composition of predominant phyla, while differing considerably at the genus level. Bacterioneuston of Lake Baikal was comparable to microbial communities of the surface microlayer of other freshwater basins, although it was characterized by high abundance of the Alphaproteobacteria and Verrucomicrobia. High abundance of photoheterotrophs compared to the water column communities of other freshwater basins was another distinctive feature of Lake Baikal bacterioneuston. Our results showed the Lake Baikal surface microlayer to be a specific microbial community with low species diversity and relatively high abundance of photoheterotrophic microorganisms.
About the authors
A. D. Galach’yants
Limnological Institute, Siberian Branch
Author for correspondence.
Email: agniagal@lin.irk.ru
Russian Federation, Irkutsk
N. L. Bel’kova
Limnological Institute, Siberian Branch
Email: agniagal@lin.irk.ru
Russian Federation, Irkutsk
E. V. Sukhanova
Limnological Institute, Siberian Branch
Email: agniagal@lin.irk.ru
Russian Federation, Irkutsk
Yu. P. Galach’yants
Limnological Institute, Siberian Branch
Email: agniagal@lin.irk.ru
Russian Federation, Irkutsk
A. A. Morozov
Limnological Institute, Siberian Branch
Email: agniagal@lin.irk.ru
Russian Federation, Irkutsk
V. V. Parfenova
Limnological Institute, Siberian Branch
Email: agniagal@lin.irk.ru
Russian Federation, Irkutsk
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