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水生生物学期刊
SJR: 0.227 SNIP: 0.901 CiteScore™: 0.5

ISSN 打印: 0018-8166
ISSN 在线: 1943-5991

水生生物学期刊

DOI: 10.1615/HydrobJ.v47.i1.40
pages 41-50

Spatial Distribution of Plankton Ciliata in Lake Baikal in Spring under Conditions of the Open Water

N. V. Potapskaya
Limnological Institute, Siberian Department, Russian Academy of Sciences, Irkutsk, Russia
L. A. Obolkina
Limnological Institute, Siberian Department, Russian Academy of Sciences, Irkutsk, Russia
V. V. Blinov
Limnological Institute, Siberian Department, Russian Academy of Sciences, Irkutsk, Russia

ABSTRACT

The composition of Ciliata, quantitative indices of their development, and their distribution over the area of water of Lake Baikal were investigated in 2007−2008 characterized by intensive development of phytoplankton. It has been found that during the period of homothermy in the pelagic zone of the lake, the distribution of Ciliata was non-uniform, which was conditioned by water stirring and by a high speed of water flow in the near-slope zone registered in springtime. At present the community of Ciliata is polydominant with a predominance of Oligotrichia. It is less abundant (500−7600 thousand cells/m3) than that registered in 1926−1928, when it was characterized by a predominance of Marituja pelagica (Hymenostomatia).


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