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The surface water nutrient concentrations were normal or lower than normal in most areas, with the exception of the phosphate and silicate in the Baltic Proper. Phosphate levels were above normal throughout the Baltic Proper. Silicate levels were above normal only in the southern Baltic …

Western Gotland Basin: Oxygen conditions at the bottom were bad, especially on the Gotland side where levels below 2 ml/l were found deeper than 55 metres. Hydrogen sulphide was recorded from depth of 90 meters in general, but locally already from 75 meters. Eastern Gotland Basin (western part): …

Surface water temperatures were normal, except in the southern Skagerrak, Kattegat and the Sound, where the temperature was some degrees higher than normal. The concentrations of phosphate and silicate in the southern Skagerrak were higher than normal. High ammonia values were found there as …

Surface water temperatures were normal in the whole area. Silicate concentrations were raised in the Skagerrak and Kattegat. In the Sound, high phosphate and silicate concentrations were recorded in the out-flowing water from the Baltic. In Arkona and Bornholm basins both phosphate- and silicate …

Surface water temperatures were normal, except for in the southern and eastern Baltic, where the temperature was higher than normal. In the Arkona and Bornholm Basins, phosphate- and silicate concentrations in the surface water remained high. The surface water streaming out of the Baltic led to …

In the Skagerrak, 9 stations with complete hydrography were taken. In the Kattegat mapping of oxygen conditions in bottom water was performed, 8 stations with complete hydrography and 12 with oxygen and salinity near bottom were sampled. The lowest oxygen concentration measured in the bottom …

Surface water temperatures were normal for the season in all areas. Phosphate and silicate concentrations were still enhanced in the Arkona and Bornholm Basins. Oxygen concentrations below 2 ml/l were observed in the bottom water of the Arkona Basin and at depths exceeding 70 to 80 metres in the …

Nutrient concentrations in the Skagerrak and Kattegatt were normal. Phosphate concentrations in the surface water of the Arkona and Bornholm Basins remain higher than normal. Oxygen concentrations below 2 ml/l were found at depths exceeding 70 – 80 metres in the entire Baltic proper. Hydrogen …

Surface temperatures were above normal in the whole area. Large amounts of blue-green algae were observed in the eastern and western Gotland Basins and north of Gotland. In the Arkona and Bornholm Basins surface phosphate and silicate concentrations were still high. In the southern Kattegat and the …

An early blue-green algal bloom of Aphanizomenom baltica and Nodularia spumigena was found near the northern and northwest coast of Gotland. Phosphate concentrations in the south and western Baltic Proper remain much higher than normal. Silicate measurements also showed high levels, while nitrate …