Warm weather increases cyanobacterial blooms in sea, lakes

The warm and calm weather has contributed to the growth of cyanobacteria, especially in the sea areas, said Finnish Environment Institute (SYKE) on Thursday.

On the coasts, cyanobacterial observations have been made particularly in the Gulf of Finland and the Archipelago Sea, and on the coast of the Bay of Bothnia exceptionally large blooms have been observed.

In some lakes larger amounts of cyanobacteria have been observed during the previous week.

The national 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.

This summer, cyanobacterial monitoring includes about 400 permanent observation sites across the country on inland and coastal waters and in the archipelago.