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
    
    • A4.1 : Atlantic and Mediterranean high energy circalittoral rock
    • A4.2 : Atlantic and Mediterranean moderate energy circalittoral rock
      • A4.21 : Echinoderms and crustose communities on circalittoral rock
      • A4.22 : [Sabellaria] reefs on circalittoral rock
      • A4.23 : Communities on soft circalittoral rock
      • A4.24 : Mussel beds on circalittoral rock
      • A4.25 : Circalittoral faunal communities in variable salinity
      • A4.26 : Mediterranean coralligenous communities moderately exposed to hydrodynamic action
      • A4.27 : Faunal communities on deep moderate energy circalittoral rock
    • A4.3 : Atlantic and Mediterranean low energy circalittoral rock
    •  A4.4 : Baltic exposed circalittoral rock
    •  A4.5 : Baltic moderately exposed circalittoral rock
    •  A4.6 : Baltic sheltered circalittoral rock
    • A4.7 : Features of circalittoral rock
  • A5 : Sublittoral sediment
    
  • A6 : Deep-sea bed
    
  • A7 : Pelagic water column
    
    • A7.1 : Neuston
    • 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
    • A7.4 : Partially mixed water column with reduced salinity and medium or long residence time
    • A7.5 : Unstratified water column with reduced salinity
      •  A7.51 : Euphotic (epipelagic) zone in unstratified reduced salinity water
      •  A7.52 : Mesopelagic zone in unstratified reduced salinity water
      •  A7.53 : Bathypelagic zone in unstratified reduced salinity water
      •  A7.54 : Abyssopelagic zone in unstratified reduced salinity water
    • 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
      •  A7.91 : Water column with ephemeral thermal stratification and full salinity
      •  A7.92 : Water column with seasonal thermal stratification and full salinity
      •  A7.93 : Water column with permanent thermal stratification and full salinity
      •  A7.94 : Water column with ephemeral halocline and full salinity
      •  A7.95 : Water column with seasonal halocline and full salinity
      •  A7.96 : Water column with permanent halocline and full salinity
      •  A7.97 : Water column with ephemeral oxygen stratification and full salinity
      •  A7.98 : Water column with seasonal oxygen stratification and full salinity
      • A7.99 : Water column with permanent oxygen stratification and full salinity
    • A7.A : Fronts in full salinity water column
  • A8 : Ice-associated marine habitats
    
• B : Coastal habitats
  
• 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
  
  • E1 : Dry grasslands
    
  • E2 : Mesic grasslands
    
  • E3 : Seasonally wet and wet grasslands
    
  • E4 : Alpine and subalpine grasslands
    
  • E5 : Woodland fringes and clearings and tall forb stands
    
  • E6 : Inland salt steppes
    
  • E7 : Sparsely wooded grasslands
    
• 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
      • F3.11 : Medio-European rich-soil thickets
      •  F3.12 : [Buxus sempervirens] thickets
      • F3.13 : Atlantic poor soil thickets
        •  F3.131 : Bramble thickets
        •  F3.132 : Alder buckthorn, rowan, honeysuckle thickets
      • F3.14 : Temperate [Cytisus scoparius] fields
        •  F3.141 : Lowland and hill broom fields
        •  F3.142 : Alpine broom fields
        •  F3.143 : Central Massif [Cytisus scoparius] fields
        •  F3.144 : Pyrenean [Cytisus scoparius] fields
      •  F3.15 : [Ulex europaeus] thickets
      • F3.16 : [Juniperus communis] scrub
      • F3.17 : [Corylus] thickets
      • F3.18 : Inland dune thickets
    • 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
      •  F5.31 : Helleno-Balkanic pseudomaquis
      •  F5.32 : Italo-French pseudomaquis
      •  F5.33 : Iberian pseudomaquis
      •  F5.34 : Western Asian pseudomaquis
    •  F5.4 : [Spartium junceum] fields
    • F5.5 : Thermo-Mediterranean scrub
  • F6 : Garrigue
    
    • F6.1 : Western garrigues
    • F6.2 : Eastern garrigues
      •  F6.21 : Eastern [Quercus coccifera] garrigues
      •  F6.22 : Eastern [Rosmarinus officinalis] garrigues
      •  F6.23 : Eastern [Cistus] garrigues
      •  F6.24 : Eastern [Euphorbia] garrigues
      •  F6.25 : Eastern [Juniperus oxycedrus] garrigues
      •  F6.26 : Eastern [Lavandula] garrigues
      • F6.27 : Eastern [Teucrium] and other labiates garrigues
      •  F6.28 : Eastern [Paliurus spina-christi] garrigues
      •  F6.29 : Eastern broom garrigues
      •  F6.2A : [Ebenus cretica] brushes
      •  F6.2B : Eastern [Helichrysum] and other composite garrigues
      •  F6.2C : Eastern [Erica] garrigues
      •  F6.2D : [Arbutus andrachne] garrigues
      •  F6.2E : Eastern [Globularia] garrigues
      •  F6.2F : Eastern [Helianthemum] and [Fumana] garrigues
      •  F6.2G : Eastern [Thymelaea] garrigues
      •  F6.2H : Eastern [Bupleurum] garrigues
      •  F6.2I : East Mediterranean pre-desert scrub
    • 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
  
  • H1 : Terrestrial underground caves, cave systems, passages and waterbodies
    
  • H2 : Screes
    
  • H3 : Inland cliffs, rock pavements and outcrops
    
  • H4 : Snow or ice-dominated habitats
    
  • H5 : Miscellaneous inland habitats with very sparse or no vegetation
    
  • H6 : Recent volcanic features
    
• I : Regularly or recently cultivated agricultural, horticultural and domestic habitats
  
• J : Constructed, industrial and other artificial habitats
  
• X : Habitat complexes