EUNIS habitat type hierarchical view

• A : Marine habitats
  
  • A1 : Littoral rock and other hard substrata
    
  • A2 : Littoral sediment
    
  • A3 : Infralittoral rock and other hard substrata
    
  • A4 : Circalittoral rock and other hard substrata
    
  • A5 : Sublittoral sediment
    
  • A6 : Deep-sea bed
    
  • A7 : Pelagic water column
    
    • A7.1 : Neuston
    • A7.2 : Completely mixed water column with reduced salinity
    • A7.3 : Completely mixed water column with full salinity
    • A7.4 : Partially mixed water column with reduced salinity and medium or long residence time
    • A7.5 : Unstratified water column with reduced salinity
    • A7.6 : Vertically stratified water column with reduced salinity
      •  A7.61 : Water column with ephemeral thermal stratification and reduced salinity
      •  A7.62 : Water column with seasonal thermal stratification and reduced salinity
      •  A7.63 : Water column with permanent thermal stratification and reduced salinity
      •  A7.64 : Water column with ephemeral halocline and reduced salinity
      •  A7.65 : Water column with seasonal halocline and reduced salinity
      • A7.66 : Water column with permanent halocline and reduced salinity
      •  A7.67 : Water column with ephemeral oxygen stratification and reduced salinity
      •  A7.68 : Water column with seasonal oxygen stratification and reduced salinity
      •  A7.69 : Water column with permanent oxygen stratification and reduced salinity
    • A7.7 : Fronts in reduced salinity water column
    • A7.8 : Unstratified water column with full salinity
    • A7.9 : Vertically stratified water column with full salinity
    • A7.A : Fronts in full salinity water column
  • A8 : Ice-associated marine habitats
    
• B : Coastal habitats
  
  • B1 : Coastal dunes and sandy shores
    
    • B1.1 : Sand beach driftlines
    • B1.2 : Sand beaches above the driftline
    • B1.3 : Shifting coastal dunes
      • B1.31 : Embryonic shifting dunes
      • B1.32 : White dunes
      •  B1.33 : Young boreo-arctic dunes
    • B1.4 : Coastal stable dune grassland (grey dunes)
    • B1.5 : Coastal dune heaths
    • B1.6 : Coastal dune scrub
    • B1.7 : Coastal dune woods
      •  B1.71 : Coastal brown dunes covered with natural or almost natural coniferous forest, e.g. [Pinus silvestris]
      •  B1.72 : Coastal brown dunes covered with deciduous forest ([Fagus], [Betula], [Quercus])
      •  B1.73 : Coastal dunes covered with planted [Pinus mugo] woodland
      •  B1.74 : Coastal brown dunes covered with natural or almost natural thermophilous pines
    • B1.8 : Moist and wet dune slacks
    •  B1.9 : Machair
  • B2 : Coastal shingle
    
  • B3 : Rock cliffs, ledges and shores, including the supralittoral
    
    • B3.1 : Supralittoral rock (lichen or splash zone)
    • B3.2 : Unvegetated rock cliffs, ledges, shores and islets
      •  B3.21 : High Arctic sea-cliffs and rocky shores
      •  B3.22 : Atlantic low Arctic sea-cliffs and rocky shores
      •  B3.23 : Temperate Atlantic sea-cliffs and rocky shores
      • B3.24 : Unvegetated Baltic rocky shores and cliffs
      •  B3.25 : Subtropical Atlantic sea-cliffs and rocky shores
      •  B3.26 : Mediterraneo-Pontic sea-cliffs and rocky shores
      •  B3.27 : Rock stacks and islets above splash zone
    • B3.3 : Rock cliffs, ledges and shores, with angiosperms
      •  B3.31 : Atlantic sea-cliff communities
      • B3.32 : Vegetated Baltic gently sloping rocky shores and cliffs
      • B3.33 : Tethyan sea-cliff communities
      •  B3.34 : Canary Island and Madeiran sea-cliff communities
      •  B3.35 : Azorean sea-cliff communities
      • B3.36 : Coastal lagoon cliff communities
    • B3.4 : Soft sea-cliffs, often vegetated
• C : Inland surface waters
  
  • C1 : Surface standing waters
    
  • C2 : Surface running waters
    
  • C3 : Littoral zone of inland surface waterbodies
    
• D : Mires, bogs and fens
  
• E : Grasslands and lands dominated by forbs, mosses or lichens
  
• F : Heathland, scrub and tundra
  
  • F1 : Tundra
    
  • F2 : Arctic, alpine and subalpine scrub
    
  • F3 : Temperate and mediterranean-montane scrub
    
  • F4 : Temperate shrub heathland
    
  • F5 : Maquis, arborescent matorral and thermo-Mediterranean brushes
    
  • F6 : Garrigue
    
  • F7 : Spiny Mediterranean heaths (phrygana, hedgehog-heaths and related coastal cliff vegetation)
    
  • F8 : Thermo-Atlantic xerophytic scrub
    
  • F9 : Riverine and fen scrubs
    
  • FA : Hedgerows
    
  • FB : Shrub plantations
    
• G : Woodland, forest and other wooded land
  
• H : Inland unvegetated or sparsely vegetated habitats
  
• I : Regularly or recently cultivated agricultural, horticultural and domestic habitats
  
• J : Constructed, industrial and other artificial habitats
  
• X : Habitat complexes