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
    
    • MJ11 : Arctic sea ice
      
    • MJ12 : Baltic 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
    
    • R21 : Mesic permanent pasture of lowlands and mountains
      
    • R22 : Low and medium altitude hay meadow
      
    • R23 : Mountain hay meadow
      
      • R231 : Medio-European submontane hay meadows
        
        • R2311 : Western Hercynian submontane hay meadows
          
        • R2312 : Eastern Hercynio-Baltic submontane hay meadows
          
        • R2313 : Carpathian submontane hay meadows
          
        • R2314 : Northern Iberian submontane hay meadows
          
        • R2315 : Alpic submontane hay meadows
          
        • R2316 : Jurassian submontane hay meadows
          
        • R2317 : Illyrian submontane hay meadows
          
        • R2318 : Southwestern Moesian submontane hay meadows
          
      • R232 : Boreal and sub-boreal meadows
        
      • R233 : Alpic mountain hay meadows
        
      • R234 : Ponto-Caucasian hay meadows
        
      • R235 : Balkan mountain hay meadows
        
    • R24 : Iberian summer pasture (vallicar)
      
  • 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
      
    • R44 : Arctic-alpine calcareous grassland
      
      • R441 : Closed calciphile arctic-alpine grassland
        
      • R442 : Arctic-alpine wind edge Kobresia myosuroides swards
        
        • R4421 : Alpine naked-rush swards
          
        • R4422 : Pyrenean naked-rush swards
          
        • R4423 : Cantabrian naked-rush swards
          
        • R4424 : Carpathian naked-rush swards
          
        • R4425 : Scandinavian naked-rush 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
    
  • R6 : Inland salt steppes and salt marshes
    
  • R7 : Sparsely wooded grasslands
    
• S : Heathland, scrub and tundra
  
• 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
    
    • T41 : Early-stage natural and semi-natural forest and regrowth
      
    • T42 : Coppice and early stage plantations
      
    • T43 : Recently felled areas
      
      • T431 : Recently felled areas, formerly broadleaved trees
        
      • T432 : Recently felled areas, formerly coniferous trees
        
      • T433 : Recently felled areas, formerly mixed broadleaved and coniferous trees
        
      • T434 : Shrubby clearings
        
• U : Inland habitats with no or little soil and mostly with sparse vegetation
  
• V : Vegetated man-made habitats