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All phytoplankton samples from the Skagerrak, the Kattegat and the Baltic Sea had low species diversities. All of the cell counts were very low. The integrated chlorophyll concentrations were normal at the Baltic stations and below normal at the Skagerrak and Kattegat stations. No details will be Last updated: Feb 27, 2018

report. The Kattegat Anholt E 12th and 13th of May The total cell number was low and dominated by small cells of unknown taxonomic place. Among the larger cells the diatoms Proboscia alata, Skeletonema marinoi and Guinardia delicatula were found in highest cell numbers. The coccolithophore Emilia huxleyi Last updated: May 28, 2019

diatom Skeletonema marinoi dominated the phytoplankton community in this area. The cell density was generally very low in the Baltic Sea during this visit. The integrated (0-10 m) chlorophyll a concentrations were higher than normal at the coastal stations in Skagerrak and Kattegat. The values were Last updated: Mar 09, 2015

diatoms and dinoflagellates. Species of Dinophysis and Chaetoceros were most abundant in these peaks. The integrated (0-20 m) chlorophyll a concentrations in the Baltic Sea where within normal at most of the stations except for BY32 and BY2 where concentrations were higher than normal as well as at BY4 Last updated: Jun 25, 2018

visible surface accumulations of filamentous cyanobacteria in the southern parts of the Baltic Sea between Bornholm and Öresund. Filamentous cyanobacteria were present as small grains in the water at the first sampling points in the outer parts of the Finnish Bay and in small amounts east of Gotland. At Last updated: Jul 29, 2016

concentrations were high in the Sound and at P2 in the Skagerrak, at all other stations the concentrations were normal for this month. The Baltic Sea samples typically had small species in low abundancies. Several different genera of small cyanobacteria were present. Last updated: Nov 02, 2017

most abundant in these peaks. The integrated chlorophyll a concentrations in the Baltic Sea where within normal at most of the stations except for Hanö bight and BY32 where the concentrations were above normal. The dinoflagellate Peridiniella catenata was found in relatively high numbers at most Last updated: May 04, 2018

pictures are in 100x magnification. Photo M. Karlberg. 3The Baltic Sea BY2 16th and BY5 19th of March Spring bloom had started with high cell numbers of the diatoms Skeletonema marinoi, Thalassiosira spp. and the ciliate Mesodinium rubrum. The species variety was rich, both diatoms and dinoflagellates as Last updated: Apr 01, 2019

this month. Most of the chlorophyll was confined to the upper 10 meters. Photo 1 and 2 The diatoms Skeletonema marinoi (left) and Guinardia delicatula were abundant at all of the Kattegat and Skagerrak stations. 3The Baltic Sea BY2 22nd, BY5 19th, BY15 17th and BY38 23rd of February Low biodiversity Last updated: Mar 12, 2019

.*, potentially toxic to fish, was found at a fluorescence maximum at W Landskrona. The flagellate has been observed during the three previous cruises as well. The cell concentrations were quite low at all stations in the Baltic Sea. The filamentous cyanobacterium Aphanizomenon flos-aquae was found in high cell Last updated: Jun 07, 2017