Summary
The diatom spring bloom had ceased in The Kattegatt and Skagerrak areas. The total cell concentrations were very low and dominated by cryptomonads and ciliates. The integrated (0-20 meters) chlorophyll a concentrations were lower than normal in the Kattegatt and Skagerrak areas. The total cell concentrations were very low at almost all stations in The Baltic Sea and the phytoplankton community was dominated by cryptomonads. The diatom spring bloom at Kalmar Sound, Ref.M1V1 was dominated by Skeletonema marinoi. The net sample taken from BY 32 was dominated by the cyanobacterium Aphanizomenon sp.. The integrated (0-20 meters) chlorophyll a concentrations were lower than normal in the Baltic Sea.