Expeditionsrapporter från utsjöövervakningen

The temperature and nutrient concentrations in the surface layer, were normal for the season in all areas. An intense plankton bloom was ongoing in the eastern Skagerrak, in the Arkona Basin, the Hanö Bight and in an area in the northern part of the western Gotland Basin. Hydrogen sulphide was …

Mapping of winter nutrient conditions in the Baltic Proper was performed. The nutrients showed typical winter concentrations in all areas. A tendency for a beginning spring bloom was observed in the Kattegat, while there were no signs of biological activity in the other basins. Hydrogen sulphide …

Mapping of winter nutrient conditions in the Kattegat and the Sound was performed. Temperature as well as nutrient conditions in the surface layer were normal for the season in all areas except some temperatures in the Baltic, which were higher. In the Baltic oxygen concentration of the bottom …

The surface temperatures varied from 9.5°C in the Skagerrak to 5°C Bothnian Bay. Due to the very mild autumn the surface temperature in the Kattegat exceeded the normal values with 2°C and in the Baltic with 3.5°C . The nutrient concentrations were generally normal for the season with a few …

The temperatures varied between 9.3°C in the northern Batlic proper and 12.5°C in the Skagerrak. Nutrient concentrations were generally normal for the season with a few exceptions. The bottom water oxygen deficiency in the southeastern Katteagatt was restored to normal oxygen concentrations. In the …

There was an enlarged sampling in the south-eastern Kattegat to examine the oxygen of the bottom water. The water near the bottom in Laholmsbukten and Skälderviken had an oxygen content of 0.10 and 0.38 ml/l respectively. In the Sound there was less than 2 ml/l from 15 meters and deeper at W …

Oxygen concentrations in the bottom water of Kattegat and the Sound were mapped. Low oxygen concentrations were found in the Laholm Bay 0.16 ml/l, in Skälderviken, 0.64 ml/l and in the Sound, just around 1 ml/l. In the rest of Kattegat, bottom water oxygen concentrations varied between 2 and 4.5 …

Surface temperatures varied between 15.5 and 17.5°C. Nutrient concentrations were normal for the season, nitrite and nitrate below detection limits (0.02 and 0.10 µmol/l repectively). Posphate between 0.02 and 0.3 µmol/l and silicate from 0.3 µmol/l in the Skagerrak to 10 µmol/l in the Baltic. …

The surface temperatures were between 14.3 and 17.7°C. Nutrient concentrations were normal for the season in all areas. In the Skagerrak the surface salinity was <30 psu at the coastal stations and >32 at the western stations of the Å transect . In the Kattegatt the surface salinity ranged between 20 and 21 psu. Oxygen concentrations …

The surface temperatures were between 14 and 16ºC. Nutrient concentrations were normal for the season in mainly all areas. In the Skagerrak the surface salinity was >30 psu with exception of the easterly station of the Å cross section, where the salinity was 24 psu depending on the transit of the …