Environment. What Are Cyanobacteria and Why Do They Prevent Swimming in the Heat?
9 Articles
9 Articles
Several beaches in Lake Bourget, Savoie, have been banned from swimming because of suspicion of cyanobacteria. If analyses have indicated that regulatory thresholds have not been exceeded, these micro-organisms, in high concentration, may have health consequences.

When they are in small numbers, some cyanobacteria can, when they multiply, release toxins into water that are potentially dangerous or even lethal to living beings.
While dog owners are at least partially warned of the danger, there is not a single warning sign for people in Bohinj.
Due to rising temperatures, several lakes, ponds and streams have had to be closed in recent days due to the proliferation of cyanobacteria, which can be toxic to humans and even lethal to animals.
With high heat, cyanobacteria proliferate in lakes and rivers, forcing authorities to close entire beaches. Invisible or forming a greenish film on the surface, they can be dangerous to human and animal health.
As France suffocates under heat, freshwater bathing becomes a danger: cyanobacteria proliferate in lakes and ponds, making many sites banned to the public.
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