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
  
• 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
      
      • S411 : Northern wet heaths
        
      • S412 : Southern wet heaths
        
      • S413 : Molinia caerulea wet heaths
        
    • S42 : Dry heath
      
      • S421 : Submontane Vaccinium - Calluna heaths
        
      • S422 : Sub-Atlantic Calluna - Genista heaths
        
        • S4221 : Northern Calluna - Genista heaths
          
        • S4222 : Subcontinental Calluna - Genista heaths
          
        • S4223 : Campino-Flandrian Calluna - Genista heaths
          
        • S4224 : Campino-Flandrian Erica cinerea heaths
          
        • S4225 : Britannic Calluna - Genista heaths
          
        • S4226 : Montane Calluna - Genista heaths
          
        • S4227 : Southern sub-boreal Calluna - Empetrum heaths
          
        • S4228 : Illyrian heaths
          
        • S4229 : Po basin heaths
          
        • S422A : Genista sagittalis heaths
          
        • S422B : Central European basicline heaths
          
        • S422C : Pontic ling heaths
          
      • S423 : Atlantic Erica - Ulex heaths
        
      • S424 : Ibero-Atlantic Erica - Ulex - Cistus heaths
        
        • S4241 : Biscay heaths
          
        • S4242 : Luso-Galician heaths
          
        • S4243 : Cabreran heaths
          
        • S4244 : Galicio-Leonese heaths
          
        • S4245 : Oro-Castillan heaths
          
        • S4246 : Sorian heaths
          
        • S4247 : Cuencan heaths
          
        • S4248 : Luso-Extremaduran heaths
          
        • S4249 : Erica andevalensis heaths
          
      • S425 : Boreo-Atlantic Erica cinerea heaths
        
      • S426 : Inland dune heaths
        
        • S4261 : Dry sandy heaths with Empetrum nigrum
          
        • S4262 : Dry sandy heaths with Calluna and Genista
          
    • 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
    
    • S51 : Mediterranean maquis and arborescent matorral
      
    • S52 : Submediterranean pseudomaquis
      
    • S53 : Spartium junceum scrub
      
    • S54 : Thermomediterranean arid scrub
      
      • S541 : Mediterranean pre-desert scrub
        
      • S542 : Western Tethyan xero-psammitic brushes
        
  • S6 : Garrigue
    
  • S7 : Spiny Mediterranean heaths (phrygana, hedgehog-heaths and related coastal cliff vegetation)
    
  • S8 : Thermo-Atlantic xerophytic scrub
    
  • S9 : Riverine and fen scrubs
    
    • S91 : Temperate riparian scrub
      
    • S92 : Salix fen scrub
      
    • S93 : Mediterranean riparian scrub
      
    • S94 : Semi-desert riparian scrub
      
• T : Forest and other wooded land
  
• U : Inland habitats with no or little soil and mostly with sparse vegetation
  
• V : Vegetated man-made habitats