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Hypoxia is increasing in the coastal zone of the Baltic Sea
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2011 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 45, no 16, 6777-6783 p.Article in journal (Refereed) Published
Abstract [en]

Hypoxia is a well-described phenomenon in the offshore waters of the Baltic Sea with both the spatial extent and intensity of hypoxia known to have increased due to anthropogenic eutrophication, however, an unknown amount of hypoxia is present in the coastal zone. Here we report on the widespread unprecedented occurrence of hypoxia across the coastal zone of the Baltic Sea. We have identified 115 sites that have experienced hypoxia during the period 1955-2009 increasing the global total to ca. 500 sites, with the Baltic Sea coastal zone containing over 20% of all known sites worldwide. Most sites experienced episodic hypoxia, which is a precursor to development of seasonal hypoxia. The Baltic Sea coastal zone displays an alarming trend with hypoxia steadily increasing with time since the 1950s effecting nutrient biogeochemical processes, ecosystem services, and coastal habitat.

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2011. Vol. 45, no 16, 6777-6783 p.
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Natural Sciences Environmental Sciences
URN: urn:nbn:se:su:diva-68324DOI: 10.1021/es201212rISI: 000293758400009OAI: diva2:477374
authorCount :19Available from: 2012-01-13 Created: 2012-01-03 Last updated: 2012-01-13Bibliographically approved

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Humborg, ChristophJonsson, PerLarsson, UlfMedina, Miguel RodriguezWalve, Jakob
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Department of Applied Environmental Science (ITM)Baltic Nest InstituteDepartment of Systems Ecology
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