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International Journal on Algae
SJR: 0.216 SNIP: 0.322 CiteScore™: 0.4

ISSN Imprimer: 1521-9429
ISSN En ligne: 1940-4328

International Journal on Algae

DOI: 10.1615/InterJAlgae.v17.i2.20
pages 131-141

Northern Expansion of Cylindrospermopsis raciborskii (Nostocales, Cyanoprokaryota) Observed in Shallow Highly Eutrophic Lake Nero (Russia)

O. V. Babanazarova
Department Zoology and Ecology, P.G. Demidov Yaroslavl State University, 9 Matrosova Prosp., Yaroslavl
S.I. Sidelev
P.G. Demidov Yaroslavl State University, 9, Prosp. Matrosova, Yaroslavl 150057, Russia
J. Fastner
Federal Environ. Agency, Sect. II, Water treatment and resource protect., 1, Corrensplatz, Berlin 14195, Germany

RÉSUMÉ

The emergence and mass development of freshwater planktonic Cylindrospermopsis raciborskii (Wolosz.) Seenayya et Subba Raju in northern latitudes (57°N) in the highly trophic Lake Nero (the Yaroslavl Region, Russia) were described. This population is close to that of India and France by theirforms of trichomes and the sizes of their heterocytes. The absence of akinetes during mass development makes it similar to populations of pantropics and shows high ecological and geographical plasticity. It is able to produce cyanotoxins. Trace quantities of dissolved cylindrospermopsin were detected using liquid chromatography/ tandem mass spectrometry. The abundance peak (30.5−23.3% of a total number and biomass of phytoplankton respectively) was short and occurred during a blocking anticyclone in August 2010. The hypothesis of advancing this species to the northern part of the geosphere due to the process of global warming is confirmed. Low transparency, water level, high biogenic load, mineralization, water resistant time and trophic level produce favourable conditions for invasive species. There is a serious threat for emerging toxic populations of algae in reservoirs of temperate zones.


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