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integrated chlorophyll concentrations were within normal for this month. In the Baltic Sea sampling at RefM1V1 had to be cancelled due to military exercise. In general, both cell numbers and species diversity were low on all Baltic stations, except at BY2 where the diatoms Cerataulina pelagica and Last updated: Nov 06, 2019

This cruise was not a full cruise with phytoplankton sampling at only three west coast stations and three stations in the Baltic Sea. The west coast stations Släggö and Anholt E displayed relatively high biodiversity. The coccolithophore Emiliania huxleyi was found at high cell numbers at both Last updated: Oct 12, 2018

This sampling occasion was not a full cruise with all phytoplankton stations, only one west coast phytoplankton station and six in the Baltic Sea were sampled. The west coast station (Anholt E), displayed an autumn bloom community with several species of dinoflagellates, as well as some diatoms Last updated: Sep 28, 2018

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

chlorophyll concentrations were high in the surface water, but the integrated (0-10 and 0-30 meters) numbers were normal for January. The phytoplankton community was in its winter rest in the Baltic Sea. Only small cells were present like cryptomonads, pico cyanobacteria colonies and ciliates. The chlorophyll Last updated: Jan 31, 2019

simultaneously with the heterotrophic dinoflagellate P. danica, causing elevated chlorophyll concentrations. In the Baltic Sea, spring bloom was observed at BY5 in the southern and BCSIII-10 in the eastern Proper Baltic with high cell numbers of diatoms and the dinoflagellate Peridiniella catenata. The species Last updated: Apr 24, 2019

Nodularia spumigena* were present at many stations and Dolichospermum sp. were found at BY38 and RefM1V1. As in Skagerrak and Kattegat, the chlorophyll concentrations in the Baltic Sea were low but within normal for June. Last updated: Jun 25, 2019

were low but within normal for this month. The species diversity and total cell numbers were low at both stations at the Kattegat coast. The dinoflagellate Dinophysis acuta which has been rare in Swedish waters for some years was found at Anholt E. 3The Baltic Sea BY2 16th of September The Last updated: Oct 03, 2019