Biogeography of Planktonic and Benthic Bacterial Communities of Lake Khubsugul (Mongolia)

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Abstract

The bacterioplankton of Lake Khubsugl (Hövsgöl) has significant differences from that of large ancient and oligotrophic water bodies. The greatest similarity was noted, however, between the microbiomes of Lake Khubsugul and Lake Baikal, the lakes located in the same rift zone and connected by the river system, which emphasizes the similarity of microbiomes at the regional level. In the global aspect, geographical zonation had the greatest reliable significance in the microbial community biogeography, while depth had the lowest. Trophic status of the lakes, as well as their ancient origin, did not affect the clustering of microbiomes, with the seasonal factor playing the major part at the local and regional levels.

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About the authors

O. I. Belykh

Limnological Institute, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: belykh@lin.irk.ru
Russian Federation, Irkutsk, 664033

A. Yu. Krasnopeev

Limnological Institute, Siberian Branch, Russian Academy of Sciences

Email: belykh@lin.irk.ru
Russian Federation, Irkutsk, 664033

E. G. Sorokovikova

Limnological Institute, Siberian Branch, Russian Academy of Sciences

Email: belykh@lin.irk.ru
Russian Federation, Irkutsk, 664033

S. A. Potapov

Limnological Institute, Siberian Branch, Russian Academy of Sciences

Email: belykh@lin.irk.ru
Russian Federation, Irkutsk, 664033

N. Jadambaa

Limnological Institute, Siberian Branch, Russian Academy of Sciences; Institute of Biology, Mongolian Academy of Sciences

Email: belykh@lin.irk.ru
Russian Federation, Irkutsk, 664033; Ulaanbaatar, 13330 Mongolia

T. I. Belykh

Baikal State University

Email: belykh@lin.irk.ru
Russian Federation, Irkutsk, 664074

I. V. Tikhonova

Limnological Institute, Siberian Branch, Russian Academy of Sciences

Email: belykh@lin.irk.ru
Russian Federation, Irkutsk, 664033

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2. Fig. 1. Cluster analysis of microbiomes of water and soils. UPGMA-dendrogram is based on the matrix of Brey distances‒Curtis. In the histograms, the dominant phylum represented in this community is indicated in color. The names of reservoirs are highlighted in color depending on the trophic status of the reservoir.

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