Tropical phytoplankton taxa in Aquitaine lakes (France)

Abstract : In the last decades, numerous exotic species of microalgae have been found in the continental waters of Europe. In three natural shallow lakes located in the southwest of France, several planktonic species typically encountered in tropical areas were observed during 2006 and 2007. The most representative taxa were Planktolyngbya microspira Kom. & Cronb. P. circumcreta (G. S. West) Anagn. & Kom., Cyanodictyon tropicale Senna, Delazari & Sant'Anna and Staurastrum excavatum var. planctonicum Krieg. These species had so far only been reported from African lakes and other tropical areas, but in this study they accounted for up to 58 and 12% of the total abundance and biomass, respectively, during spring and summer. Some of these lakes were studied in the 1970s and only exotic desmids were reported
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M. Cellamare, M. Leitao, M. Coste, A. Dutartre, Jacques Haury. Tropical phytoplankton taxa in Aquitaine lakes (France). Hydrobiologia, Springer, 2010, 639 (1), pp.129-145. ⟨10.1007/s10750-009-0029-x⟩. ⟨hal-00729642⟩

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