Sammanfattning
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 ml/l, highest in the northern part.