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
    
    • MJ21 : Arctic freshwater ice
      
  • MJ3 : Brine channels
    
    • MJ31 : Arctic brine channels
      
    • MJ32 : Baltic brine channels
      
  • MJ4 : Under-ice habitat
    
    • MJ41 : Arctic under-ice habitat
      
    • MJ42 : Baltic under-ice habitat
      
• N : Coastal habitats
  
• Q : Wetlands
  
• R : Grasslands and lands dominated by forbs, mosses or lichens
  
  • R1 : Dry grasslands
    
  • R2 : Mesic grasslands
    
  • R3 : Seasonally wet and wet grasslands
    
  • R4 : Alpine and subalpine grasslands
    
  • R5 : Forest fringes and clearings and tall forb stands
    
  • R6 : Inland salt steppes and salt marshes
    
  • R7 : Sparsely wooded grasslands
    
• S : Heathland, scrub and tundra
  
  • S1 : Tundra
    
  • S2 : Arctic, alpine and subalpine scrub
    
  • S3 : Temperate and mediterranean-montane scrub
    
  • S4 : Temperate shrub heathland
    
  • 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
    
  • 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
      
      • S731 : Pyrenean hedgehog-heaths
        
      • S732 : Cordilleran hedgehog-heaths
        
      • S733 : Nevadan hedgehog-heaths
        
      • S734 : Franco-Iberian hedgehog-heaths
        
        • S7341 : Erinacea hedgehog-heaths
          
        • S7342 : Peri-Nevadan dwarf cushion-heaths
          
        • S7343 : Echinospartum boissieri hedgehog-heaths
          
        • S7344 : Catalano-Valencian Erinacea hedgehog-heaths
          
        • S7345 : Genista cushion-heaths
          
        • S7346 : Collinar Astragalus hedgehog-heaths
          
        • S7347 : Summital Balearic labiate hedgehog-heaths
          
    • 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