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Surface water temperatures were normal in the Skagerrak, Kattegat and in most of the Baltic Proper. Nutrient levels in surface water were normal throughout the investigated area except in the Arkona Basin where silicate was slightly low. In the the Baltic Proper oxygen concentrations below 2 ml/l …

In the Southern Baltic Proper, concentrations of phosphate and silicate in surface waters remain high, while nitrate concentrations were normal. Nutrient concentrations in the Skagerrak and the Kattegat were normal for the season throughout the study area. There was an algal bloom along the Swedish …

Oxygen conditions in the main part of the Hanö Bight, east of Öland, around the Midsjö Banks and in the Northern part of the Bornholm Basin were good. Below 70-80 metres depth, both west and east of Gotland, oxygen concentrations were below 2 ml/l. Hydrogen Sulphide was found at three stations west …

High concentrations of phosphate were measured in the surface water of the southern Baltic. Silicate concentrations were also enhanced while nitrogen showed normal values. On the West-Coast nutrients concentrations, except for silicate, were normal or close to normal. Silicate concentrations in the …

The expedition was included within National Board of Fisheries International Bottom Trawl Survey and covered the Skagerrak and the Kattegat and the Sound. Mapping of winter nutrient conditions was performed in the Skagerrak and 14 stations with complete hydrography were sampled. In the Kattegat 10 …

Surface water temperatures were above normal in all areas. Surface salinities were high in the Kattegat and the Sound and an inflow to the Baltic occurred the week before the expedition. In the Southern Baltic Proper concentrations of phosphate were raised in the surface water. Otherwise, nutrient …

Nutrients that are added to the sea are a natural requirement for all marine life, and are not an environmental issue. Problems start to occur when nutrients are added in such large amounts that the function and character of the ecosystem is negatively affected.