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Estimates of the extent of hypoxia and anoxia in Autumn 2007.
Topics:
Fisheries
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Hypoxia = oxygen content less than 2 ml/l
Anoxia = oxygen content nil; often with presence of hydrogen sulphide-which reacts with oxygen to produce sulphate
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Additional information
When this reaction occurs, oxygen concentrations are considered negative Over time, there has been a steady increase in the area affected by hydrogen sulphide in the East and West Gotland Basins, and the outer Gulf of Finland. Water from the Gulf of Finland does not enter into the Gulf of Bothnia. As a result, despite its depth, it remains well oxygenated, even during autumn.
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Publish date:
- 09 Jan 2009
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Last upload:
- 30 Oct 2008
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Tags:
- SOER2010 | fishery | hypoxic | thematic assessment | marine and coastal | anoxic | signals2009
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Rights:
- Access is managed by the owner mentioned below. Please contact the owner for more information about their data policy.
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Source:
Helsinki Commision - Baltic Marine Environment Protection Commission: http://www.helcom.fi/environment2/ifs/ifs2007/en_GB/HydrographyOxygenDeep/
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Owners:
- The Helsinki Commission (HELCOM)
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Figure type:
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Related content
Used in the following publications
- Marine and coastal environment — SOER 2010 thematic assessment
- EEA Signals 2009, key environmental issues facing Europe
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