EUNIS habitat type hierarchical view (marine version 2022 & terrestrial version 2021)

The EUNIS habitat classification review is on-going. Four groups are pending review: Inland waters, Wetlands, Constructed, industrial and other artificial habitats and Complexes.

• M : Marine benthic habitats (MA-MG)
  
• MH : Pelagic water column
  
• MJ : Ice-associated marine habitats
  
  • MJ1 : Sea ice
    
  • MJ2 : Freshwater ice
    
  • MJ3 : Brine channels
    
    • MJ31 : Arctic brine channels
      
    • MJ32 : Baltic brine channels
      
  • MJ4 : Under-ice habitat
    
• N : Coastal habitats
  
• Q : Wetlands
  
• R : Grasslands and lands dominated by forbs, mosses or lichens
  
• S : Heathland, scrub and tundra
  
  • S1 : Tundra
    
    • S11 : Shrub tundra
      
    • S12 : Moss and lichen tundra
      
  • S2 : Arctic, alpine and subalpine scrub
    
    • S21 : Subarctic and alpine dwarf Salix scrub
      
    • S22 : Alpine and subalpine ericoid heath
      
      • S221 : Alpide dwarf ericoid wind heaths
        
      • S222 : Alpide acidocline Rhododendron heaths
        
      • S223 : Alpigenic high mountain Empetrum - Vaccinium heaths
        
      • S224 : Boreo-alpine and arctic heaths
        
      • S225 : Bruckenthalia heaths
        
      • S226 : Alpide Arctostaphylos uva-ursi and Arctostaphylos alpinus heaths
        
      • S227 : Alpide Rhododendron hirsutum - Erica heaths
        
        • S2271 : Hairy alpenrose heaths
          
        • S2272 : Alpine erica heaths
          
      • S228 : Dryas octopetala mats
        
      • S229 : Alpide high mountain dwarf Vaccinium heaths
        
    • S23 : Alpine and subalpine Juniperus scrub
      
    • S24 : Subalpine genistoid scrub of the Amphi-Adriatic region
      
    • S25 : Subalpine and subarctic deciduous scrub
      
    • S26 : Subalpine Pinus mugo scrub
      
    • S27 : Krummholz with conifers other than Pinus mugo
      
  • S3 : Temperate and mediterranean-montane scrub
    
  • S4 : Temperate shrub heathland
    
    • S41 : Wet heath
      
    • S42 : Dry heath
      
    • S43 : Macaronesian heath
      
      • S431 : Canary Island heaths
        
      • S432 : Madeiran cloud heaths
        
      • S433 : Madeiran summital heaths
        
      • S434 : Azorean lowland heaths
        
      • S435 : Upland Azorean Erica azorica and Juniperus brevifolia heaths
        
      • S436 : Azorean summital heaths
        
  • S5 : Maquis, arborescent matorral and thermo-Mediterranean scrub
    
  • S6 : Garrigue
    
  • S7 : Spiny Mediterranean heaths (phrygana, hedgehog-heaths and related coastal cliff vegetation)
    
    • S71 : Western Mediterranean spiny heath
      
    • S72 : Eastern Mediterranean spiny heath (phrygana)
      
    • S73 : Western Mediterranean mountain hedgehog-heath
      
    • S74 : Central Mediterranean mountain hedgehog-heath
      
      • S741 : Cyrno-Sardinian hedgehog-heaths
        
      • S742 : Mount Etna hedgehog-heaths
        
      • S743 : Madonie and Apennine hedgehog-heaths
        
    • S75 : Eastern Mediterranean mountain hedgehog-heath
      
    • S76 : Canarian mountain hedgehog-heath
      
  • S8 : Thermo-Atlantic xerophytic scrub
    
  • S9 : Riverine and fen scrubs
    
• T : Forest and other wooded land
  
• U : Inland habitats with no or little soil and mostly with sparse vegetation
  
• V : Vegetated man-made habitats