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
  
• N : Coastal habitats
  
• Q : Wetlands
  
  • Q1 : Raised and blanket bogs
    
  • Q2 : Valley mires, poor fens and transition mires
    
  • Q3 : Palsa mires
    
  • Q4 : Base-rich fens and calcareous spring mires
    
  • Q5 : Helophyte beds
    
  • Q6 : Periodically exposed shores
    
• R : Grasslands and lands dominated by forbs, mosses or lichens
  
• S : Heathland, scrub and tundra
  
  • S1 : Tundra
    
  • S2 : Arctic, alpine and subalpine scrub
    
  • S3 : Temperate and mediterranean-montane scrub
    
  • S4 : Temperate shrub heathland
    
    • S41 : Wet heath
      
    • S42 : Dry heath
      
      • S421 : Submontane Vaccinium - Calluna heaths
        
      • S422 : Sub-Atlantic Calluna - Genista heaths
        
      • S423 : Atlantic Erica - Ulex heaths
        
        • S4231 : Maritime gorse heaths
          
        • S4232 : Hiberno-Britannic Calluna vulgaris - Ulex gallii heaths
          
        • S4233 : Irish Erica mackaiana heaths
          
        • S4234 : Northern Erica vagans heaths
          
        • S4235 : Anglo-Armorican Erica cinerea - Ulex gallii heaths
          
        • S4236 : Cantabro-Pyrenean Erica mackaiana - E. cinerea heaths
          
        • S4237 : Cantabro-Pyrenean Erica vagans - E. cinerea heaths
          
        • S4238 : Gallo-Britannic dwarf gorse heaths
          
        • S4239 : Aquitano-Ligerian dwarf gorse heaths
          
      • S424 : Ibero-Atlantic Erica - Ulex - Cistus heaths
        
      • S425 : Boreo-Atlantic Erica cinerea heaths
        
      • S426 : Inland dune heaths
        
    • 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
      
    • 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