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
    
    • A3.1 : Atlantic and Mediterranean high energy infralittoral rock
    • A3.2 : Atlantic and Mediterranean moderate energy infralittoral rock
    • A3.3 : Atlantic and Mediterranean low energy infralittoral rock
    •  A3.4 : Baltic exposed infralittoral rock
    •  A3.5 : Baltic moderately exposed infralittoral rock
    •  A3.6 : Baltic sheltered infralittoral rock
    • A3.7 : Features of infralittoral rock
  • A4 : Circalittoral rock and other hard substrata
    
  • A5 : Sublittoral sediment
    
  • A6 : Deep-sea bed
    
    • A6.1 : Deep-sea rock and artificial hard substrata
    • A6.2 : Deep-sea mixed substrata
    • A6.3 : Deep-sea sand
    •  A6.4 : Deep-sea muddy sand
    • A6.5 : Deep-sea mud
    • A6.6 : Deep-sea bioherms
    • A6.7 : Raised features of the deep-sea bed
    • A6.8 : Deep-sea trenches and canyons, channels, slope failures and slumps on the continental slope
    • A6.9 : Vents, seeps, hypoxic and anoxic habitats of the deep sea
  • A7 : Pelagic water column
    
    • A7.1 : Neuston
      •  A7.11 : Temporary neuston layer
      •  A7.12 : Permanent neuston layer
    • A7.2 : Completely mixed water column with reduced salinity
      • A7.21 : Completely mixed water column with reduced salinity and short residence time
      • A7.22 : Completely mixed water column with reduced salinity and medium residence time
      • A7.23 : Completely mixed water column with reduced salinity and long residence time
    • A7.3 : Completely mixed water column with full salinity
      •  A7.31 : Completely mixed water column with full salinity and short residence time
      •  A7.32 : Completely mixed water column with full salinity and medium residence time
      •  A7.33 : Completely mixed water column with full salinity and long residence time
    • 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
    • A7.7 : 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
    
  • B2 : Coastal shingle
    
  • B3 : Rock cliffs, ledges and shores, including the supralittoral
    
• 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
    
    • F2.1 : Subarctic and alpine dwarf willow scrub
    • F2.2 : Evergreen alpine and subalpine heath and scrub
    • F2.3 : Subalpine deciduous scrub
    • F2.4 : Conifer scrub close to the tree limit
  • F3 : Temperate and mediterranean-montane scrub
    
    • F3.1 : Temperate thickets and scrub
    • F3.2 : Submediterranean deciduous thickets and brushes
  • F4 : Temperate shrub heathland
    
  • F5 : Maquis, arborescent matorral and thermo-Mediterranean brushes
    
    • F5.1 : Arborescent matorral
    • F5.2 : Maquis
    • F5.3 : Pseudomaquis
    •  F5.4 : [Spartium junceum] fields
    • F5.5 : Thermo-Mediterranean scrub
  • F6 : Garrigue
    
    • F6.1 : Western garrigues
      •  F6.11 : Western [Quercus coccifera] garrigues
      •  F6.12 : Western [Rosmarinus officinalis] garrigues
      •  F6.13 : Western [Cistus] garrigues
      •  F6.14 : Western [Euphorbia] garrigues
      •  F6.15 : Western [Juniperus oxycedrus] garrigues
      •  F6.16 : Western [Lavandula] garrigues
      •  F6.17 : Western [Teucrium] and other labiate garrigues
      •  F6.18 : Western [Genista] garrigues
      •  F6.19 : Western [Calicotome] garrigues
      •  F6.1A : Western composite garrigues
      •  F6.1B : Western [Erica] garrigues
      •  F6.1C : Western [Globularia] garrigues
      •  F6.1D : Western [Helianthemum] and [Fumana] garrigues
      •  F6.1E : [Lithodora fruticosa] garrigues
      •  F6.1F : Western [Thymelaea] garrigues
      •  F6.1G : Western [Bupleurum] garrigues
      •  F6.1H : Western [Ulex] garrigues
      •  F6.1I : Western [Ononis fruticosa] garrigues
      •  F6.1J : Western [Anthyllis cytisoides] garrigues
      •  F6.1K : Western [Dictamnus] garrigues
    • F6.2 : Eastern garrigues
    • F6.3 : Illyrian garrigues
    • F6.4 : Black Sea garrigues
    •  F6.5 : Macaronesian garrigues
    • F6.6 : Supra-Mediterranean garrigues
    • F6.7 : Mediterranean gypsum scrubs
    • F6.8 : Xero-halophile scrubs
  • 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