Indicator Specification

This indicator shows concentrations of phosphate and nitrate in rivers, total phosphorus in lakes and nitrate in groundwater bodies. The indicator can be used to illustrate geographical variations in current nutrient concentrations and temporal trends.

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This indicator illustrates current biochemical oxygen demand ( BOD) and concentrations of total ammonium (NH 4 ) in rivers, and examines trends in both. The key indicator for the oxygenation status of water bodies is BOD, which is the demand for oxygen resulting from organisms in water that consume oxidisable organic matter.

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The indicator shows different trends of surface area (in km2) designated under national legislation, under EU Directives and under  international conventions and initiatives: Changes over time in cumulative surface area of sites designated nationally; Changes over time in cumulative surface area of sites designated under EC Birds and Habitats Directives; Changes over time in cumulative surface area of sites designated under international conventions and initiatives. The indicator also shows the current status of implementation of the Habitats Directive by EU-25 Member-States expressed as a: Sufficiency Index (distance to target), which provides a measure of progress in the implementation of the Habitats Directive. The indicator shows the proportion of a country designated total area that is protected under either the EC Birds and/or Habitats Directives, or by national instruments, or by both. Share of surface areas designated only under the EC Birds and Habitats Directives, protected only by national instruments, and covered by both

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