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Policy Document

Common Implementation Strategy for the Water Framework Directive (2000/60/EC)

Policy Document
1 min read
Policy Summary of Guidance document No. 23 on Eutrophication assessment in the context of European water policies 

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Indicator Specification Nutrients in transitional, coastal and marine waters The indicator illustrates the following levels and trends in concentrations in the regional seas of Europe: winter means of dissolved inorganic nitrogen (nitrate + nitrite + ammonium) winter means of orthophosphate annual means of total nitrogen annual means of total phosphorus The winter period is defined as follows: January, February and March for stations east of longitude 15 degrees (Bornholm) in the Baltic Sea January and February for all other stations. The following marine (sub)regions are covered, in line with the Marine Strategy Framework Directive (sub)regions: Regions Subregions Baltic Sea None North-East Atlantic Ocean Greater North Sea Celtic Seas Bay of Biscay and the Iberian coast Macaronesian biogeographic region Mediterranean Sea Western Mediterranean Sea Adriatic Sea Ionian Sea and Central Mediterranean Aegean-Levantine Sea Black Sea None
Indicator Specification
Archived
Nutrients in transitional, coastal and marine waters This indicator illustrates the levels and trends in winter means of dissolved inorganic nitrogen (nitrate + nitrite + ammonium), oxidised nitrogen (nitrate + nitrite) and phosphate concentrations (micromol/l) in the regional seas of Europe.
Indicator Specification
Archived
Nutrients in transitional, coastal and marine waters The indicator shows 1) annual winter concentrations (micromol/l); 2) classification of concentration levels (i.e. low, moderate, high) and 3) trends in winter oxidised nitrogen (nitrate + nitrite) and phosphate concentration (micromol/l)in the regional seas of Europe.  Levels and trends of winter concentrations of dissolved inorganic nutrients are used for this indicator, as it is assumed that winter concentrations are not significantly reduced due to uptake by primary producers. The winter period is defined as follows: January, February and March for stations east of longitude 15 degrees (Bornholm) in the Baltic Sea  January and February for all other stations. The used regional and subregional seas of Europe are in line with the geographical regions and sub-regions specified in the Marine Strategy Framework Directive (MSFD).  Other European Seas (Icelandic Sea, The Norwegian Sea, the Barents Sea and the White Sea) are not covered in this indicator due to current lack of data. 

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