Frost exposure and poor pollination are behind expectations for a less than ideal season, according to research institute Luke. Bilberry patches at particular risk are in the regions of South Karelia, Kainuu, Keminmaa, Ylitornio, as well as certain areas of Central and South Ostrobothnia.
Potentially harmful blue-green algae has increased in lakes over the past week.
In the frigid waters of the Gulf of Finland, cyanobacteria has been observed for the first time during the winter months.
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