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Sound and independent information
on the environment

Environmental Terminology and Discovery Service (ETDS)

 
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euphotic zone
The upper, illuminated zone of aquatic ecosystems: it is above the compensation level and therefore the zone of effective photosynthesis. In marine ecosystems it is much thinner than the deeper aphotic zone (below the level of effective light penetration), typically reaching 30 m in coastal waters but extending to 100-200 m in open ocean waters. [definition source: Allaby, 1994. Quoted by: European Topic Centre on Nature Conservation. 1998. EUNIS habitat classification. Final draft with further revisions to marine habitats. United Kingdom.]

Terminology source: http://glossary.eea.europa.eu

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European Environment Agency (EEA)
Kongens Nytorv 6
1050 Copenhagen K
Denmark
Phone: +45 3336 7100