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This is part of the EEA core set indicator 21 (http://themes.eea.europa.eu/Specific_media/water/indicators)
Mean trophic level of fisheries landings for the north-east Atlantic, Mediterranean and Black Seas, 1950-2003 The decline in mean trophic levels results in shortened food chains, leaving ecosystems less able to cope with natural or human-induced change
Concentrations are expressed as annual median concentrations for groundwater, and median of annual average concentrations for rivers and lakes
Southern accession countries (AC): Malta,Cyprus, Turkey
Median values for range of prices are shown in each category and should be considered as indicative only.
Number of monitoring stations in brackets Western Europe: Austria (103), Denmark (32), France (204), Germany (109), United Kingdom (30)
The number of river monitoring stations in each country is given in brackets
For references, please go to https://www.eea.europa.eu/data-and-maps/find/global or scan the QR code.
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