This paper discusses changes in the dissolved oxygen concentration (DOC) in the southern Baltic Sea. The oxygenation of the whole water column was estimated. Monthly mean DOCs, as well as a detailed description of the annual surface layer dissolved oxygen (DO) cycle, are presented. The DO cycle at the surface is characterized by two maxima in March/April and November, and by two minima in July/August and December. The DO decline time after the major Baltic inflow (MBI) in 2014 was estimated at about 10 months for the Bornholm Deep and Słupsk Furrow. Whereas the Bornholm Basin was relatively well oxygenated, low oxygen concentrations (<4 mg l⁻¹) were measured in the deep layer of the Gdańsk Deep throughout the inflow period. In addition, the cod spermatozoa activation layer together with the neutral egg buoyancy layer for the Bornholm Basin and Słupsk Furrow are discussed on the basis of the measured DOCs and the variability in hydrographic conditions.

本文讨论了波罗的海南部溶解氧浓度（DOC）的变化。估计整个水塔的氧化。介绍了月平均DOC，以及年度表层溶解氧（DO）周期的详细说明。表面的DO循环的特征是在3月/ 4月和11月有两个最大值，在7月/ 8月和12月有两个最小值。据估计，Bornholm Deep和SłupskFurrow的2014年主要波罗的海流入量（MBI）之后，DO下降时间约为10个月。博恩霍尔姆盆地含氧量相对较高，但氧浓度较低（<4 mg l ^-1）是在整个流入期间在格但斯克深层的深层测量的。此外，根据测得的DOC和水文条件的可变性，讨论了博恩霍尔姆盆地和斯普普斯克沟的鳕鱼精子活化层以及中性卵浮力层。