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Baltic Sea, filamentous cyanobacteria were abundant and surface accumulations were observed at REF M1V1, BY15 and at BY32. The dinoflagellate Prorocentrum minimum* was abundant at several stations, the highest cell number was found at BY15. The integrated chlorophyll a concentrations (0-10 meters) were Last updated: Oct 04, 2016

spring bloom. The diversity and cell concentrations in the Baltic Sea were low at all stations. The diatom Skeletonema marinoi was found in high numbers at the eastern stations whereas small flagellates dominated at the other stations. The integrated (0-10 m) chlorophyll a concentrations were low which Last updated: Mar 09, 2016

* had reached N14 Falkenberg with the Baltic current. However, the high salinity in the area prevents the blooms that occur in the Baltic Sea during summer. The integrated chlorophyll concentrations were within normal for this month. Threadlike cyanobacteria were still numerous at many of the Baltic Last updated: Sep 15, 2016

All phytoplankton samples from the Skagerrak, the Kattegat and the Baltic Sea had low species diversities. All of the cell counts were low. No further detailed phytoplankton information will be presented in this report, only species lists and the chlorophyll diagrams. Last updated: Jan 25, 2016

. A rare and beautiful species, Pyramimonas longicauda was present, Fig 1. Släggö (Skagerrak coast) 4th of September The phytoplankton situation was similar to the one at Å17. One exception was that a diatom typical for the North Sea, Pseudosolenia calcar-avis, was common. One of the least common Last updated: Sep 18, 2015

on the cyanobacteria dominating in the Baltic bloom. The 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 Last updated: Aug 28, 2014

A joint Swedish-Finnish sea-ice experiment was performed during March 1977. Measurements in the atmosphere, ice and sea were made during six days onboard the Finnish Research vessel Aranda stationed in the ice field in the Bay of Bothnia. During two days measurements were also carried out from the Last updated: Aug 02, 2019

a chlorophyll fluorescence maximum at W Landskrona at 10 meters depth, Pseudochattonella spp.* was present with approximately 80 000 cells/l. The diatom Skeletonema marinoi (chain) and the flagellate Pseudochattonella spp. were abundant in the Skagerrak and Kattegat samples. 3The Baltic Sea BY2 and Last updated: Mar 27, 2017

plankton groups, but the 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/1.11631 Last updated: Jul 29, 2015

(0-10 m) chlorophyll a concentrations were normal for this month at all stations except at the second visit at Anholt E where it was a bit higher than normal for the season. The diversity and cell concentrations were low at all stations The southern stations were dominated by relatively large diatoms Last updated: Dec 02, 2015