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Surface temperatures were above normal in the whole area. A cyanobacterial bloom was ongoing in the Baltic and large surface accumulations of cyanobacteria (blue green algae) were observed in the Arkona and Bornholm Basins and in patches in south-eastern part of the Baltic. Nutrient concentrations …

Surface water temperature was higher than normal in the Skagerrak, northern Kattegat and southern Baltic. Salinities at Anholt E, P2, Å13 and Å15, were lower than normal, due to a strong outflow from the Baltic. Phosphorus concentrations in the Arkona Basin, the Sound and southern Kattegat remain …

Temperature and salinity in the surface water was normal throughout the investigated area. The phosphorus concentration remains elevated in the south Baltic Proper and the Sound. All inorganic nitrogen (DIN) had been consumed in the surface water at all stations. High silicate concentrations were …

Surface water temperatures were lower than normal throughout the study area (some degrees lower at W Landskrona). Phosphate values in the surface water of the Kattegat, the Sound and the southern Baltic remain higher than normal. Silicate concentrations in the Bornholm Basin were normal, while …

Surface water temperatures were lower than normal throughout the study area. Phosphate and silicate values in the surface water of the southern Baltic remain higher than normal. Nitrate concentration of the Arkona Basin was at the limit of detection. This is lower than normal. Phosphate and …

Oxygen conditions in the main part of the Hanö Bight, east of Öland and around the Midsjö Banks were good. In the Northeastern part of the Bornholm Basin oxygen concentrations were below 2 ml/l at depths exceeding 55 m. Below 70-80 metres depth, both west and east of Gotland, oxygen concentrations …

High surface phosphate concentrations were measured in the southern part of the Baltic Proper. Silicate concentrations were also enhanced there, while levels of nitrogen compounds were normal or somewhat below normal. Nutrient concentrations in the Skagerrak-Kattegat area were normal or almost …

Mapping of winter nutrient conditions was performed in the Skagerrak and 15 stations with complete hydrography were sampled. In the Kattegat 9 stations with complete hydrography were sampled. The nutrient concentrations were lower than normal in the Skagerrak. In the Kattegat the nitrogen …

In the Southern Baltic Proper, concentrations of phosphate and silicate in surface waters remain high. Phosphate and silicate concentrations in other areas were normal. Nitrate concentrations were low throughout the study area. In the Baltic Proper oxygen concentrations were below 2 ml/l at …

This report presents the results from two September cruises. A small diatom bloom was proceeding at the Skagerrak coast and in the Kattegat area during the second cruise. In open Skagerrak, the plankton flora was scarce with a few small species in low cell numbers. The integrated chlorophyll a …