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
  
• R : Grasslands and lands dominated by forbs, mosses or lichens
  
• S : Heathland, scrub and tundra
  
  • S1 : Tundra
    
  • S2 : Arctic, alpine and subalpine scrub
    
    • S21 : Subarctic and alpine dwarf Salix scrub
      
      • S211 : Boreo-alpine acidocline snow-patch Salix herbacea scrub
        
      • S212 : Boreo-alpine calcicline snow-patch Salix polaris scrub
        
      • S213 : Ponto-Caucasian snow-patch dwarf Salix scrub
        
    • S22 : Alpine and subalpine ericoid heath
      
    • S23 : Alpine and subalpine Juniperus scrub
      
    • S24 : Subalpine genistoid scrub of the Amphi-Adriatic region
      
    • S25 : Subalpine and subarctic deciduous scrub
      
    • S26 : Subalpine Pinus mugo scrub
      
    • S27 : Krummholz with conifers other than Pinus mugo
      
  • 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
      
    • 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
      
  • S6 : Garrigue
    
  • S7 : Spiny Mediterranean heaths (phrygana, hedgehog-heaths and related coastal cliff vegetation)
    
    • S71 : Western Mediterranean spiny heath
      
      • S711 : West Mediterranean mainland clifftop phrygana
        
      • S712 : Balearic clifftop phrygana
        
      • S713 : Sardinian Centaurea horrida phrygana
        
      • S714 : Sardinian Genista acanthoclada phrygana
        
      • S715 : Corsican and Sardinian Genista phrygana
        
      • S716 : Pantelleria phrygana
        
      • S717 : Central Mediterranean Sarcopoterium phrygana
        
      • S718 : Hypericum aegyptiacum phrygana
        
    • 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
      
      • S761 : Canary Island cushion-heaths
        
  • S8 : Thermo-Atlantic xerophytic scrub
    
    • S81 : Canarian xerophytic scrub
      
    • S82 : Madeiran xerophytic scrub
      
      • S821 : Madeiran Euphorbia formations
        
      • S822 : Madeiran saxicolous formations
        
      • S823 : Desertas dry 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
  
  • U1 : Terrestrial underground caves, cave systems, passages and waterbodies
    
  • U2 : Screes
    
  • U3 : Inland cliffs, rock pavements and outcrops
    
  • U4 : Snow or ice-dominated habitats
    
    • U41 : Snow pack
      
    • U42 : Ice cap and glacier
      
    • U43 : Rock glacier and unvegetated ice-dominated moraine
      
  • U5 : Miscellaneous inland habitats usually with very sparse or no vegetation
    
    • U51 : Fjell field
      
    • U52 : Polar desert
      
    • U53 : Glacial moraines with very sparse or no vegetation
      
  • U6 : Recent volcanic features
    
    • U61 : Subarctic volcanic field
      
    • U62 : Mediterranean, Macaronesian and temperate volcanic field
      
• V : Vegetated man-made habitats