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Hydrobiological Journal
SJR: 0.227 SNIP: 0.575 CiteScore™: 0.24

ISSN Imprimer: 0018-8166
ISSN En ligne: 1943-5991

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Hydrobiological Journal

DOI: 10.1615/HydrobJ.v49.i3.20
pages 12-26

Chemical Composition, Bacteria and Algae Communities of the Ice of Lake Baikal

N. A. Bondarenko
Limnological Institute Siberian Department Russian Academy of Sciences Irkutsk, Russian Federation
O. I. Belykh
Limnological Institute Siberian Department of the Russian Academy of Sciences, Irkutsk, Russia
L. P. Golobokova
Limnological Institute Siberian Department Russian Academy of Sciences Irkutsk, Russia
O. V. Artemyeva
Limnological Institute Siberian Department Russian Academy of Sciences Irkutsk, Russia
N. F. Logacheva
Limnological Institute Siberian Department Russian Academy of Sciences Irkutsk, Russia
I. V. Tikhonova
Limnological Institute, Siberian Branch of Russian Academy of Sciences, 3, Ulan-Batorskaya St., 664033 Irkutsk, Russia
I. A. Lipko
Limnological Institute Siberian Department Russian Academy of Sciences Irkutsk, Russia
T. Ya. Kostornova
Limnological Institute, Siberian department Russian Academy of Sciences, Irkutsk, Russia
V. V. Parfenova
Limnological Institute, Siberian department Russian Academy of Sciences, Irkutsk, Russia
T. V. Khodzher
Limnological Institute Siberian Department Russian Academy of Sciences Irkutsk, Russia

RÉSUMÉ

Results of comprehensive studies of the ice cores taken in 2007−2008 in the coastal and open parts of the southern section of Lake Baikal are given in the paper. The studied biotope was characterized by a high biodiversity, including bacteria, Actinomycetes, flagellates, and algae. The composition of organisms, and also the quantitative characteristics of their development, changed from year to year and over the area of water of the lake. The biological activity of the ice was rather high. Hydrochemical and hydrobiological analysis has shown that the layers of cores with a high concentration of organisms were characterized by a low content of silicon, phosphorus, and nitrate. In this case, the process of organism decomposition resulted in the increase in the concentration of ammonium in ice column.


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