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Both the species diversity and total cell numbers were higher at Släggö (coastal station) than at Å17 (outer sea) at the time of sampling. Diatoms dominated at both stations and predominantly Guinardia flaccida was found. This species also dominated in the fluorescence peaks that were sampled. The Last updated: Jun 22, 2020

. The smaller cells had a dominance of Eutreptiella spp. No results of chlorophyll were available for this station. Figure 2 Spring bloom dominated by the diatom Skeletonema marinoi was observed in the southwestern Baltic Sea. Photo M. Johansen. Figure 3 A few filaments of the cyanobacteria Last updated: Apr 06, 2021

concentrations were within normal for this month all stations. Overall the phytoplankton community in the Baltic Sea consisted of small cells with a total domination of really small cells at some stations. Different ciliates were also common in most samples. A few filaments of different cyanobacteria were also Last updated: Sep 28, 2020

This report presents the results from the cruise from the end of February to the beginning of March. The species diversity and cell concentrations were low in the Baltic Sea and at the majority of the stations visited in the Skagerrak and the Kattegat. The most species rich samples were found at BY Last updated: Apr 23, 2014

numbers at both stations in the Kattegat. The integrated (0-10 m and 0-20 m) chlorophyll concentrations were low but within normal for the month. The only exception was at Å17 in the Skagerrak open sea, where the concentration was slightly above what is normal.   The species diversity was generally high Last updated: Apr 30, 2020

common in the Baltic Sea and a small (1 μm) unicell was common in all parts of the Baltic Sea visited. The integrated (0-10 m) chlorophyll a concentrations were normal for this month. Last updated: Jun 30, 2015

Tripos (previously Ceratium) was most common at these stations. The integrated chlorophyll concentrations were low but within normal for the month at all stations along the west coast. The species diversity was generally high in the Baltic Sea, but the total cell numbers were low except for the stations Last updated: May 27, 2020

concentrations in both Skagerrak and Kattegatt were within normal for the season. The phytoplankton community in the Baltic Sea was in general dominated by ciliates, cryptomonads, Pyramimonas spp., Eutreptiella spp. and species from the class Prymnesiales. Aphanizomenon flos-aquae was mostly found in The Gotland Last updated: Apr 23, 2014

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 Last updated: Apr 23, 2014

The integrated (0-20 meters) chlorophyll a concentrations were normal for the season at all Skagerrak sites. Chlorophyll a concentrations were however above normal in Kattegat at N14 and on the second sampling occasion at Anholt E. The phytoplankton community in the Skagerrak and the Kattegat was Last updated: Apr 23, 2014