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Observations of blue-green algae have decreased in the coastal waters

27.8.2009


Cyanobacterial surface accumulations are observed in the open waters of the southern Bothnian Sea. In the coastal waters, observations of blue-green algae have decreased compared to the last week. In the inner parts of the Archipelago Sea and Åland Sea as well as in the archipelago of the eastern Gulf of Finland, blue-green algae occur in places mixed in the water. Strong cyanobacterial surface accumulations are not expected to occur under in coastal marine areas around Finland under cooling and windy weather conditions.

Cyanobacteria

Cyanobacterial surface accumulations are observed in the open waters of the southern Bothnian Sea. In the coastal waters, the amounts of blue-green algae have decreased compared to the last week. In the inner parts of the Archipelago Sea and Åland Sea as well as in the archipelago of the eastern Gulf of Finland, blue-green algae occur in places mixed in the water.

Surface temperature

Surface water temperature around Finnish coastal areas varies from 14 to 17˚C. In the Baltic Proper surface temperature ranges from 16 to 18 ˚C and in the southern Baltic Sea from 17 to 18 ˚C.

Species

Species composition has not changes much compared to last week. Diatoms have increased not only in Mecklenburgbay but also elsewhere. In the vicinity of Cotland Island the ciliate Mesodinium rubrum occur abundantly.

Forecast

Strong cyanobacterial surface accumulations are not expected to occur in coastal marine areas around Finland in next few days under cooling and windy weather conditions.

Information

Scientist Pirkko Kauppila, SYKE Marine Centre, 'fistname.lastname@ymparisto.fi', tel.  +358 400 148 530

27/08/2009, http://www.itameriportaali.fi/en/ajankohtaista/itameri-tiedotteet/2009/en_GB/levakatsaus20090709_1_1_1_1_2_1/

Ministry of the Environment Finnish Environment Institute Finnish Meteorological Institute

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