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however observed in the eastern part and northern part of the Baltic Sea as well as the north part of the Kalmar Sound. Last updated: Apr 23, 2014

All stations along the Swedish west coast except for the outer most station in Skagerrak were dominated by small flagellates. Some of the flagellates could be determined to belong to the order prymnesiales. In the Baltic Sea the cell density was generally low but a remnant of a spring bloom was Last updated: May 05, 2015

areas. The potentially fish killing flagellate Pseudochattonella (right) was quite numerous at Fladen and at Släggö. 3The Baltic Sea BY2 Arkona Basin and BY5 Bornholm Basin 20th of April Many different species of colony forming pico cyanobacteria were present. Ciliates, naked dinoflagellates and Last updated: May 09, 2016

flagellate was present in the Arkona and the Bornholm basins. The Baltic Sea samples were in addition to the flagellate dominated by small coccoids, ciliates and dinoflagellates from the genera Scrippsiella/Biecheleria/ Gymnodinium. The chlorophyll a concentrations were normal in the Skagerrak but very high Last updated: May 21, 2014

nutrients etc, see the latest cruise report http //www.smhi.se/en/publications/cruise-reports-from-the-marine-monitoring/cruise-report-from-r-v-aranda-week-11-12-2016-1.102598 Last updated: Apr 04, 2016

The phytoplankton samples from the Skagerrak station Å17 had the highest diversity of the plankton stations in the Western Sea in mid-March. Diatoms were the most frequent and the diatom Leptocylindrus danicus the most numerous species. At Släggö and at the Kattegat stations the species diversity Last updated: Apr 23, 2014

at the other Kattegat stations. The diatom Leptocylindrus minimus was the most numerous species at station Släggö. The diatom Pseudosolenia calcar-avis was present at the Kattegat stations. 3The Baltic Sea All phytoplankton samples from the Baltic stations had few species with low cell numbers Last updated: Sep 17, 2014

method used here is not the best for other plankton groups, nevertheless all organisms observed are reported. To follow the surface accumulations of cyanobacteria in the Baltic Sea by satellite interpretations http //www.smhi.se/en/ Weather/Sweden-weather/the-algae-situation-1.11631 2More detailed Last updated: Jul 16, 2014

Planctonema lauterbornii. To follow the surface accumulations of cyanobacteria in the Baltic Sea by satellite interpretations http //www.smhi.se/vadret/hav-och-kust/algsituationen-1.11383 The phytoplankton samples were filtered through 10 µm polycarbonate filters before being analysed using a light microscope Last updated: Apr 23, 2014

diatom species Rhizosolenia pungens was also recorded in high cellnumbers. The integrated (0-20 meters) chlorophyll a concentrations from the Baltic Sea were normal for the season at most stations. The occurrence of cyanobacteria had diminished greatly at most stations since the last expedition. Small Last updated: Apr 23, 2014