Baltic Sea ‘dead zone’ development, 1969 – 2015: IOW publishes detailed map material based on long-term data

Oxygen minimum zones caused by intense microbial degradation processes of organic matter are a characteristic feature of the Baltic Sea. The hostile living conditions of these so-called ‘dead zones’ become even more pronounced, when toxic hydrogen sulphide is produced by bacterial activity. To visualise the spatial and temporal distribution and dynamics of these areas, IOW now has published in the 100th issue of its journal “Marine Science Reports” a unique collection of over 250 maps covering data of more than four decades.