Warm weather rises cyanobacterial bloom in sea, lakes

The cyanobacterial situation has deteriorated from previous weeks due to warm weather, said Finnish Environment Institute (SYKE) in a press release on Thursday.

Cyanobacterial blooms have now been observed more than average in inland waters, even though lake surface temperatures are typical for the season.

Large cyanobacterial blooms have also been observed in some sea areas. If the weather stays calm and warm, it is likely to increase the number of cyanobacterial blooms.

The national cyanobacterial monitoring is carried out as part of the monitoring of the state of the environment in cooperation with the Centres for Economic Development, Transport and the Environment (ELY Centres), municipal environmental and health authorities and the SYKE.

The cyanobacterial monitoring is based on the monitoring of cyanobacterial deposits in surface water, and the intention is to provide an overview of the cyanobacterial situation in different water bodies.

The monitoring includes about 400 permanent observation sites across the country on inland and coastal waters and in the archipelago.