Summary
The cell concentrations were low in all sampling stations at the Swedish West coast and in the Baltic Sea. The species diversity was higher in the Kattegat and Skagerrak areas than in the Baltic Sea. The species diversity was highest among the dinoflagellates although it seems like the diatom spring bloom could start very soon. Skeletonema marinoi was common southwest of Öland (REF M1-W1) and Cryptomonads and Mesodinium rubrum dominated at all sampling stations in the Baltic Sea. The integrated (0-20 m) chlorophyll a concentrations were within average for this month in all sampling areas. This report is a shortened version because of lack of events in the phytoplankton world.