Open AccessTaxonomic composition of bacterioplankton of large freshwater lakes of the Yeravninskaya depression
Author(s) -
О. П. Дагурова,
Л. П. Козырева,
С. В. Зайцева,
Bayarma V. Tsydenova,
S. P. Buryukhaev,
Д. Д. Бархутова
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/908/1/012002
Subject(s) - bacterioplankton , bacteroidetes , actinobacteria , biology , firmicutes , planctomycetes , ecology , gammaproteobacteria , microbial population biology , bacteria , phytoplankton , 16s ribosomal rna , nutrient , genetics
Bacterioplankton community taxonomic composition of four large freshwater lakes of the Yeravninskaya depression (Bolshoye Yeravnoye, Gunda, Isinga, and Sosnovoye) which have great fishery significance for the region has been studied. The microbial community consists in the main of bacterial phyla Gammaproteobacteria (22-74%), Actinobacteria (4-35%), Firmicutes (1.17-34.6%), Bacteroidetes (0.3-7%), Cyanobacteria (0.9-6.5%) and Planctomycetes (1.5-10.5%). Total dissolved solids and sulphates accounted for 57% of the variation in the microbial community distribution. At the genus level, Acinetobacter dominated (average 21.4-25.2%). Pseudomonas, Exiguobacterium, and Massilia were also widespread. Their predominance may indicate a possible change in the structure of the community caused by natural and anthropogenic factors. In lakes Isinga and Gunda, a large number of bacteria of the genus Klebsiella was observed, Staphylococcus and Streptococcus were detected. These features indicate insufficient water quality as a result of anthropogenic impact.