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
    
    • MJ41 : Arctic under-ice habitat
      
    • MJ42 : Baltic under-ice habitat
      
• N : Coastal habitats
  
• 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
    
    • S21 : Subarctic and alpine dwarf Salix scrub
      
    • S22 : Alpine and subalpine ericoid heath
      
    • S23 : Alpine and subalpine Juniperus scrub
      
      • S231 : Southern Palaearctic mountain dwarf Juniperus scrub
        
    • S24 : Subalpine genistoid scrub of the Amphi-Adriatic region
      
      • S241 : Rayed broom heaths
        
      • S242 : Balkano-Rhodopide Chamaecytisus absinthioides heaths
        
      • S243 : Helleno-Balkanic Chamaecytisus hirsutus heaths
        
    • S25 : Subalpine and subarctic deciduous scrub
      
      • S251 : Mountain Alnus brush
        
        • S2511 : Green alder brush
          
        • S2512 : Corsican sweet alder brush
          
      • S252 : Subalpine and oroboreal Salix brush
        
      • S253 : Subalpine mixed brushes
        
      • S254 : Oroboreal Betula scrub
        
    • S26 : Subalpine Pinus mugo scrub
      
      • S261 : Inner Alpine Pinus mugo scrub
        
      • S262 : Outer Alpine Pinus mugo scrub
        
      • S263 : Southwestern Pinus mugo scrub
        
      • S264 : Apennine Pinus mugo scrub
        
      • S265 : Hercynian Pinus mugo scrub
        
      • S266 : Carpathian Pinus mugo scrub
        
        • S2661 : Carpathian subalpine mountain pine scrub
          
        • S2662 : Carpathian alpenrose mountain pine scrub
          
      • S267 : Pelago-Dinaride Pinus mugo scrub
        
      • S268 : Balkano-Rhodopide Pinus mugo scrub
        
    • S27 : Krummholz with conifers other than Pinus mugo
      
  • S3 : Temperate and mediterranean-montane scrub
    
    • S31 : Lowland to montane temperate and submediterranean Juniperus scrub
      
    • S32 : Temperate Rubus scrub
      
    • S33 : Lowland to montane temperate and submediterranean genistoid scrub
      
    • S34 : Balkan-Anatolian submontane genistoid scrub
      
    • S35 : Temperate and submediterranean thorn scrub
      
    • S36 : Low steppic scrub
      
    • S37 : Corylus avellana scrub
      
    • S38 : Temperate forest clearing scrub
      
  • S4 : Temperate shrub heathland
    
    • S41 : Wet heath
      
    • S42 : Dry heath
      
    • S43 : Macaronesian heath
      
  • S5 : Maquis, arborescent matorral and thermo-Mediterranean scrub
    
  • S6 : Garrigue
    
  • 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
  
• U : Inland habitats with no or little soil and mostly with sparse vegetation
  
• V : Vegetated man-made habitats