Learning from 8 years of regional cyanobacteria observation in Brittany in view of sanitary survey improvement.

Abstract : Cyanobacteria and cyanotoxins have been more and more studied during the last decades with regard to environment and health issues. More recently the consequences of climate change reinforced the need for research in view of a better management of cyanobacteria blooms. In this context the exploitation of the water quality survey of 26 recreational lakes in Brittany (north western France) between 2004 and 2011 is reported in this paper in order to encompass spatial and interannual patterns of cyanobacteria development at a regional scale. Starting from weekly data principally acquired during summertime, the links between cyanobacteria cell densities, toxin occurrences and interannual meteorological factors can give insights on the potential evolution of cyanobacterial crisis in the future. This study is part of a project aiming at a better understanding of potentially toxic cyanobacteria crisis occurrences in recreational waters, in order to improve predictive monitoring routines.
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Frédéric Pitois, Olivier Thomas, Isabelle Thoraval, Estelle Baurès. Learning from 8 years of regional cyanobacteria observation in Brittany in view of sanitary survey improvement.. Environment International, Elsevier, 2014, 62, pp.113-118. ⟨10.1016/j.envint.2013.09.018⟩. ⟨hal-00877892⟩

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