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
    
  • MJ4 : Under-ice habitat
    
• N : Coastal habitats
  
  • N1 : Coastal dunes and sandy shores
    
  • N2 : Coastal shingle
    
  • N3 : Rock cliffs, ledges and shores, including the supralittoral
    
• 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
    
    • R41 : Snow-bed vegetation
      
    • R42 : Boreal and arctic acidophilous alpine grassland
      
    • R43 : Temperate acidophilous alpine grassland
      
      • R431 : Alpic Nardus stricta swards and related communities
        
        • R4311 : Pyreneo-Alpine mesophile mat-grass swards
          
        • R4312 : Pyreneo-Alpine hygrophile mat-grass swards
          
        • R4313 : Pyreneo-Alpine hygrophile foxtail swards
          
        • R4314 : Pyrenean closed Festuca eskia grassland
          
        • R4315 : Pyrenean Poa violacea swards
          
        • R4316 : Hercynian summital mat-grass swards
          
        • R4317 : Carpathian mat-grass swards
          
        • R4318 : Oro-Moesian mat-grass swards
          
        • R4319 : Dinaride mat-grass swards
          
      • R432 : Thermo-Alpigenous subalpine acidophilous grassland
        
        • R4321 : Thermo-Alpigenous Festuca paniculata swards
          
        • R4322 : Pyrenean Festuca eskia garland-grasslands
          
        • R4323 : Arverno-Alpine varicoloured fescue garland-grasslands
          
      • R433 : Alpigenous acidophilous grassland
        
      • R434 : Oro-Hellenic closed grassland
        
      • R435 : Oro-Iberian acidophilous grassland
        
      • R436 : Oro-Corsican grassland
        
      • R437 : Oro-Apennine closed grassland
        
      • R438 : Oro-Moesian acidophilous grassland
        
      • R439 : Western Asian acidophilous alpine grassland
        
      • R43A : Illyrian alpine and subalpine acid open grasslands
        
    • R44 : Arctic-alpine calcareous grassland
      
      • R441 : Closed calciphile arctic-alpine grassland
        
      • R442 : Arctic-alpine wind edge Kobresia myosuroides swards
        
      • R443 : Arctic-alpine calciphilous stepped and garland grassland
        
      • R444 : Ponto-Caucasian alpine grassland
        
    • R45 : Alpine and subalpine calcareous grassland of the Balkans and Apennines
      
  • R5 : Forest fringes and clearings and tall forb stands
    
    • R51 : Thermophilous forest fringe of base-rich soils
      
    • R52 : Forest fringe of acidic nutrient-poor soils
      
    • R53 : Macaronesian thermophilous forest fringe
      
    • R54 : Pteridium aquilinum vegetation
      
    • R55 : Lowland moist or wet tall-herb and fern fringe
      
    • R56 : Montane to subalpine moist or wet tall-herb and fern fringe
      
      • R561 : Alpic tall-herb communities
        
      • R562 : Alpic tall grass communities
        
      • R563 : Pyreneo-Iberian tall-herb communities
        
      • R564 : Ibero-Mauritanian tall-herb communities
        
      • R565 : Corsican Cymbalaria tall-herb communities
        
      • R566 : Corsican Doronicum tall-herb communities
        
      • R567 : Eastern oro-Mediterranean and Balkan tall-herb communities
        
      • R568 : Alpine Rumex communities
        
      • R569 : Oro-boreal tall-herb communities
        
      • R56A : Ponto-Caucasian tall-herb communities
        
      • R56B : Alpine and subalpine fern stands
        
    • R57 : Herbaceous forest clearing vegetation
      
  • R6 : Inland salt steppes and salt marshes
    
  • R7 : Sparsely wooded grasslands
    
• S : Heathland, scrub and tundra
  
• T : Forest and other wooded land
  
• U : Inland habitats with no or little soil and mostly with sparse vegetation
  
• V : Vegetated man-made habitats