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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.v40.i2.20
11 pages

Stages of the Study of Autotrophic Picoplankton of Lake Baikal

G. I. Popovskaya
Limnological Institute Siberian Department of the Russian Academy of Sciences, 3, Ulan-Batorskaya St., 664033, Irkutsk, Russia
O. I. Belykh
Limnological Institute Siberian Department of the Russian Academy of Sciences, Irkutsk, Russia

RÉSUMÉ

Autotrophic picoplankton of Lake Baikal was studied during 30 years. New species of algae, including endemic organisms, were found there. It has been found that autotrophic picoplankton is the main chain of the trophic link of the lake. It is highly diverse in its species composition. Its maximum numbers are observed in winter. The numbers of autotrophic picoplankton inversely depend on the numbers of large phytoplankton. Mass development of phytoplankton in summertime registered after the period of spring water bloom formed by its large forms is responsible for the optimal functioning of the biota of Lake Baikal, and also for the formation of primary organic matter in the pelagic zone of the lake throughout the year.


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