Table 1 Summary of abiotic and biotic changes in the Baltic Sea in comparison to other coastal areas worldwide.

Red coloration in the heat map depicts drivers that are above average in severity/impact; yellow, average; and green, below average. Gray: No assessment possible. NIS, nonindigenous species. For full documentation on how scores for each system and parameter were obtained, including all references underlying the assessment, see data S1.

SystemWarming of
surface water
Increased
nutrient load
Oxygen depletion in
bottom waters
Shipping intensityProportion of NISOrganochlorines
in organisms
Status of marine
fish stocks
Baltic Sea
North Sea
Mediterranean Sea
Black Sea
Gulf of Mexico
East China Sea
Barents Sea