OpenLegislation

Division 1.2.2 Lakes

United Kingdom

Original text. Later amendments are not shown.

System A

Fixed typologyDescriptors
EcoregionEcoregions shown on map A in Annex XI
Type

Altitude typology

high

  • > 800 m

    • mid-altitude

  • 200 to 800 m

    • lowland

  • < 200 m

    • Depth typology based on mean depth

    • < 3 m

    • 3 to 15 m

    • > 15 m

    Size typology based on surface area

    • 0,5 to 1 km2

    • 1 to 10 km2

    • 10 to 100 km2

    • > 100 km2

    Geology

    • calcareous

    • siliceous

    • organic

    System B

    Alternative characterisationPhysical and chemical factors that determine the characteristics of the lake and hence the biological population structure and composition
    Obligatory factors

    altitude

    latitude

    longitude

    depth

    geology

    size

    Optional factors

    mean water depth

    lake shape

    residence time

    mean air temperature

    air temperature range

    mixing characteristics (e.g. monomictic, dimictic, polymictic)

    acid neutralising capacity

    background nutrient status

    mean substratum composition

    water level fluctuation