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
  
  • R1 : Dry grasslands
    
  • R2 : Mesic grasslands
    
    • R21 : Mesic permanent pasture of lowlands and mountains
      
    • R22 : Low and medium altitude hay meadow
      
    • R23 : Mountain hay meadow
      
    • R24 : Iberian summer pasture (vallicar)
      
  • R3 : Seasonally wet and wet grasslands
    
  • R4 : Alpine and subalpine grasslands
    
    • R41 : Snow-bed vegetation
      
      • R411 : Boreo-alpine acidocline snow-patch grassland and herb habitats
        
        • R4111 : Alpic acid moss snow-patch communities
          
        • R4112 : Alpic acid cudweed snow-patch communities
          
        • R4113 : Luzula spadicea snow patch communities
          
        • R4114 : Hercynian acid snow patch communities
          
        • R4115 : Boreal moss snowbed communities
          
        • R4116 : Boreo-alpine Deschampsia-Anthoxanthum communities
          
        • R4117 : Boreo-alpine herb-rich acid snowbed communities
          
        • R4118 : Boreo-alpine acidocline sedge and rush snowbed communities
          
      • R412 : Boreo-alpine calcicline snow-patch grassland and herb habitats
        
        • R4121 : Alpic small herb calcicolous snow-patch communities
          
        • R4122 : Distichium capillaceum snowbed communities
          
        • R4123 : Snow buttercup snowbed communities
          
        • R4124 : Snow grass snowbed communities
          
        • R4125 : Arctic woodrush snowbed communities
          
        • R4126 : Boreal herb-rich calcicline snowbed communities
          
        • R4127 : Subarctic small-herb snowbed communities
          
      • R413 : Ponto-Caucasian snow-patch grassland
        
      • R414 : Boreo-alpine fern snowbed grassland
        
    • R42 : Boreal and arctic acidophilous alpine grassland
      
    • R43 : Temperate acidophilous alpine grassland
      
    • R44 : Arctic-alpine calcareous grassland
      
    • R45 : Alpine and subalpine calcareous grassland of the Balkans and Apennines
      
  • 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
  
• T : Forest and other wooded land
  
• U : Inland habitats with no or little soil and mostly with sparse vegetation
  
• V : Vegetated man-made habitats