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
      
    • 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
        
        • 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
        
    • S43 : Macaronesian heath
      
  • 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
        
        • S5411 : Iberian jujube brush
          
        • S5412 : Sicilian jujube brush
          
        • S5413 : Maytenus brushes
          
        • S5414 : Iberian Periploca scrubs
          
        • S5415 : Sicilian Channel Periploca scrubs
          
        • S5416 : Iberian tall arid brushes
          
        • S5417 : Iberian arid garrigues
          
      • S542 : Western Tethyan xero-psammitic brushes
        
        • S5421 : Southern Andalusian "monte blanco"
          
        • S5422 : Guadalquivir xero-psammitic brushes
          
        • S5423 : Algarve xero-psammitic brushes
          
        • S5424 : Lusitanian xero-psammitic brushes
          
  • S6 : Garrigue
    
    • S61 : Western basiphilous garrigue
      
    • S62 : Western acidophilous garrigue
      
    • S63 : Eastern garrigue
      
    • S64 : Macaronesian garrigue
      
    • S65 : Mediterranean gypsum scrub
      
    • S66 : Mediterranean halo-nitrophilous scrub
      
    • S67 : Aralo-Caspian semi-desert
      
    • S68 : Semi-desert sand dune with sparse scrub
      
  • S7 : Spiny Mediterranean heaths (phrygana, hedgehog-heaths and related coastal cliff vegetation)
    
  • S8 : Thermo-Atlantic xerophytic scrub
    
  • S9 : Riverine and fen scrubs
    
• T : Forest and other wooded land
  
  • T1 : Deciduous broadleaved forest
    
  • T2 : Broadleaved evergreen forest
    
  • T3 : Coniferous forest
    
  • T4 : Lines of trees, small anthropogenic forests, recently felled forest, early-stage forest and coppice
    
• U : Inland habitats with no or little soil and mostly with sparse vegetation
  
• V : Vegetated man-made habitats