RT Journal Article ID 7d8272445510fb11 A1 Babanazarova, O. V. A1 Sidelev, S.I. A1 Fastner, J. T1 Northern Expansion of Cylindrospermopsis raciborskii (Nostocales, Cyanoprokaryota) Observed in Shallow Highly Eutrophic Lake Nero (Russia) JF International Journal on Algae JO IJA YR 2015 FD 2015-05-15 VO 17 IS 2 SP 131 OP 141 K1 Cylindrospermopsis raciborskii K1 expansion K1 Lake Nero K1 cylindrospermopsin K1 invasion AB 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. PB Begell House LK https://www.dl.begellhouse.com/journals/7dd4467e7de5b7ef,28d946f715267f26,7d8272445510fb11.html