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Hydrobiological Journal

ISSN Print: 0018-8166
ISSN Online: 1943-5991

Hydrobiological Journal

DOI: 10.1615/HydrobJ.v51.i1.20
pages 13-23

Mass Development of Green Filamentous Algae of the Genera Spirogyra and Stigeoclonium (Chlorophyta) in the Littoral Zone of the Southern Part of Lake Baikal

O. A. Timoshkin
Limnological Institute, Siberian Department, Russian Academy of Sciences, Irkutsk, Russia
N. A. Bondarenko
Limnological Institute Siberian Department Russian Academy of Sciences Irkutsk, Russian Federation
Ye. A. Volkova
Limnological Institute Siberian Department Russian Academy of Sciences Irkutsk, Russian Federation
I. V. Tomberg
Limnological Institute, Siberian Branch of Russian Academy of Sciences, 3, Ulan-Batorskaya St., 664033 Irkutsk, Russia
V. S. Vishnyakov
Limnological Institute Siberian Department Russian Academy of Sciences Irkutsk, Russian Federation; Institute of Biology of Inland Waters Russian Academy of Sciences Borok, Russian Federation
V. V. Malnik
Limnological Institute Siberian Department Russian Academy of Sciences Irkutsk, Russia

ABSTRACT

As a result of long-term studies (2008−2013) of macroalgae of the littoral zone of the western bank of the southern part of Lake Baikal (the reaches of the Angara River − Listvennichny Bay), it has been found that species of the genus Spirogyra Link. dominate at the depths of 0.3−3.0 m in late summer and autumn. Previously species of this genus were not found in Lake Baikal. The study of the biology of the algae both under natural and under laboratory conditions made it possible to identify one of the dominant species as S. fluviatilis Hilse. Mass development of Stigeoclonium tenue (C. Agardh) Kutz. was registered for the first time in November 2012 near the water edge in Bolshiye Koty Bay. The intensity of development of the species of the genus Spirogyra was assessed in the region of investigations. It has been shown that during the period of mass development (November) the phytomass of the algae can attain 317 ± 143 g/m2. In this case, projective cover of bottom sediments represented by stones can be 100%.