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
    
  • A7 : Pelagic 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
    
  • F3 : Temperate and mediterranean-montane scrub
    
  • 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
      • F5.51 : Thermo-Mediterranean brushes, thickets and heath-garrigues
      •  F5.52 : [Euphorbia dendroides] formations
      •  F5.53 : [Ampelodesmos mauritanica] -dominated garrigues
      •  F5.54 : [Chamaerops humilis] brush
      • F5.55 : Mediterranean pre-desert scrub
      • F5.56 : Thermo-Mediterranean broom fields (retamares)
        •  F5.561 : Yellow retama brush
        •  F5.562 : Ibero-Mauritanian white retama brush
        •  F5.563 : [Genista speciosa] broom fields
        •  F5.564 : [Genista valentina] broom fields
        •  F5.565 : [Genista retamoides] broom fields
        •  F5.566 : [Genista haenseleri] broom fields
        •  F5.567 : [Genista ramosissima] broom fields
        •  F5.568 : Thermo-mediterranean [Lygos raetam] brush
        •  F5.569 : Eolian broomfields
        •  F5.56A : [Genista ephedroides] broomfields
        •  F5.56B : Ibiza broomfields
        •  F5.56C : [Genista pseudoretamoides] broom fields
      • F5.57 : Mediterranean gorse-heaths
      • F5.58 : Iberian thermo-Mediterranean garrigues
      • F5.59 : [Stauracanthus boivinii] gorse-heaths
      • F5.5A : Western Tethyan xero-psammitic brushes
      •  F5.5B : Cabo de Sao Vicente brushes
      • F5.5C : Thermo-Mediterranean heaths
  • 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
  
  • G1 : Broadleaved deciduous woodland
    
  • G2 : Broadleaved evergreen woodland
    
    • G2.1 : Mediterranean evergreen [Quercus] woodland
    • G2.2 : Eurasian continental sclerophyllous woodland
    • G2.3 : Macaronesian [Laurus] woodland
    • G2.4 : [Olea europaea] - [Ceratonia siliqua] woodland
    • G2.5 : [Phoenix] groves
    •  G2.6 : [Ilex aquifolium] woods
    • G2.7 : Canary Island heath woodland
    • G2.8 : Highly artificial broadleaved evergreen forestry plantations
    • G2.9 : Evergreen orchards and groves
  • G3 : Coniferous woodland
    
  • G4 : Mixed deciduous and coniferous woodland
    
  • G5 : Lines of trees, small anthropogenic woodlands, recently felled woodland, early-stage woodland and coppice
    
• H : Inland unvegetated or sparsely vegetated habitats
  
  • H1 : Terrestrial underground caves, cave systems, passages and waterbodies
    
    •  H1.1 : Cave entrances
    • H1.2 : Cave interiors
    •  H1.3 : Dark underground passages
    • H1.4 : Lava tubes
    • H1.5 : Underground standing waterbodies
    • H1.6 : Underground running waterbodies
    •  H1.7 : Disused underground mines and tunnels
  • H2 : Screes
    
  • H3 : Inland cliffs, rock pavements and outcrops
    
  • H4 : Snow or ice-dominated habitats
    
    •  H4.1 : Snow packs
    • H4.2 : Ice caps and true glaciers
    • H4.3 : Rock glaciers and unvegetated ice-dominated moraines
  • 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