Algal situation reports

The phytoplankton community in the Skagerrak and the Kattegat was dominated by a small coccolithophore, Emiliania huxleyi, and a diatom, Pseudo-nitzschia spp. The potentially harmfull naked dinoflagellates Karenia
mikimotoi and Karlodinium veneficum were common and particularly at Släggö. The …

There were several phytoplankton species with high cell numbers in the samples from the Skagerrak and Kattegat area, above all at the coastal stations Släggö in the Skagerrak and N14 in the Kattegat. The integrated (0-10 m) chlorophyll a concentrations were normal for this month. Chlorophyll a …

This report covers the Baltic Proper only as this expedition is reporting from the Finish cruise. All analyses have been performed onboard the ship and the main focus was to follow the cyanobacterial surface accumulations and blooms.

Summary of surface accumulations
The warm air temperature and …

Fluorescence maxima in both Skagerrak and Kattegat areas were to a great deal caused by the dinoflagellate genus Ceratium. Unusually large numbers of C. macroceros was observed.

In the Baltic, the cyanobacteria surface accumulations had been muixed down in the water column by wind and waves. …

The stations at Skagerrak were dominated by large cells from the dinoflagellate genus Ceratium. The phytoplankton community in the Kattegat was dominated by the diatom Phaeodactylum tricornatum. The cyanobacterial species Aphanizomenon flos-aquae and the dinoflagellate Dinophysis norvegica were …

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 …

In the coastal area of the Skagerrak the nutrient- and cell concentrations were low compared to the open Skagerrak where the diatom spring bloom was ongoing. In the Baltic Sea the cell density was generally low but at the Arkona Basin the spring bloom had started. The integrated (0-10 m) …

The cell concentration was very low at Å17 in the open Skagerrak. The chlorophyll fluorescence measurements and the high nutrient concentrations showed that the spring bloom had not yet started here. The diatom spring bloom was ongoing in the Kattegat and at Släggö on the Skagerrak coast. The …

The diatom spring bloom had started at the southern Kattegat station, Anholt E. Due to the storm Egon, the January cruise could not visit the Skagerrak area this month, as well as several stations in the Baltic.

The species diversities and cell densities were very low in the Baltic Sea. The …

The diversity was high and diatoms dominated the phytoplankton community in the Kattegat and the Skagerrak. A flagellated cell that most likely is Vicicitus globosus or a naked stage of Dictyocha speculum or D. fibula, was common in this area.

The species diversity and cell density was generally low …