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Cyanobacterial blooms increase in sea, decline in lakes

Published : 31 Jul 2020, 02:48

  DF Report

Raft-forming blue green algae have been observed, e.g., in the northern part of the Sea of Åland. Press Release Photo SYKE.

The amount of cyanobacteria occurrences has been observed in sea areas, while in lakes, such occurrences have been observed to be less than the average, says the Finnish Environment Institute (SYKE).

In sea areas, cyanobacteria occurrences have increased, which is typical for late July and early August.

A windy weather has kept the cyanobacteria mixed in the water bodies; therefore, extensive surface blooms have not been observed in sea areas.

In lakes, cyanobacteria occurrences have been observed less than is usual for the season in most areas of Finland.

Cyanobacterial blooms have increased to an above average level only in the regions of north Karelia and central Finland.

Normally, cyanobacterial blooms as well as other algal blooms occur most abundantly in August.