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Summary of algal bloom monitoring 2018: Sweltering summer brought exceptional cyanobacterial surface blooms to sea areas, in lakes abundant cyanobacterial blooms took place earlier 2018-08-30
In the Gulf of Finland, cyanobacterial blooms during the summer of 2018 were strongest for the 2010's. Surface blooms covered at worst almost the entire Gulf of Finland. Also in the southern parts of Archipelago Sea and Sea of Åland cyanobacterial surface blooms were abundant. In lakes cyanobacteria became abundant already in late June due to warm weather and cyanobacteria were observed in lakes more than typically until the beginning of August
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Summary of algal bloom monitoring 2017: Plenty of cyanobacteria in sea areas during July-August, but fewer observations of cyanobacteria than usual in lakes 2017-08-31
The algal situation in early summer was calm and cyanobacteria started to become more abundant only in July. In sea areas, cyanobacteria occurred abundantly especially in the northern Baltic proper and the western Gulf of Finland, but winds and cool seawater prevented the formation of conspicuous surface accumulations. In lakes, on average fewer observations of cyanobacteria than usual were made, with the exception of early July and late August.
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Incidence of cyanobacteria started early this summer, but towards the end of summer abundant cyanobacteria occurrences halted 2016-09-01
Cyanobacteria started to increase in abundance early this summer, but during late summer less cyanobacteria surface blooms were observed than normally. In the Finnish southwestern open sea areas cyanobacteria were abundant throughout the summer, but mixed in the water column, and long-lasting surface blooms did not develop. In lakes, cyanobacteria were abundant only occasionally during the summer, but in August exceptionally little cyanobacteria was observed.
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