Using this graphic and referring to it is encouraged, and please use it in presentations, web pages, newspapers, blogs and reports.
For any form of publication, please include the link to this page and give the cartographer/designer credit (in this case Hugo Ahlenius, UNEP/GRID-Arendal)
UNEP. 2004. GEO Yearbok 2003. Nairobi, Kenya: UNEP
Uploaded on Saturday 25 Feb 2012
Sites with dead zones (oxygen depletion on the sea bottom)
Hugo Ahlenius, UNEP/GRID-Arendal
Dead zones (hypoxic i.e. oxygen deficient water) in the coastal zones are increasing, typically surrounding major industrial and agricultural centers. This is commonly occuring due to nutrient pollution, in the form of nitrogen and phosphorous leading to algal blooms and eutrophication