Sites with dead zones (oxygen depletion on the sea bottom)
Dead zones (hypoxic i.e. oxygen deficient water) in the coastal zones are increasing, typically surrounding major industrial and agricultural centers. This is commonly occurring due to nutrient pollution, in the form of nitrogen and phosphorous leading to algal blooms and eutrophication.
Year: 2008
From collection: In Dead Water - Climate Change, Pollution, Over-harvest, and Invasive Species in the World's Fishing Grounds
Cartographer: Hugo Ahlenius, UNEP/GRID-Arendal