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
  
  • Q1 : Raised and blanket bogs
    
  • Q2 : Valley mires, poor fens and transition mires
    
    • Q21 : Oceanic valley mire
      
    • Q22 : Poor fen
      
      • Q221 : Eriophorum scheuchzeri fens
        
        • Q2211 : Alpide cottonsedge lake girdles
          
        • Q2212 : Boreal Eriophorum scheuchzeri fens
          
      • Q222 : Carex nigra, Carex canescens, Carex echinata fens
        
      • Q223 : Trichophorum cespitosum and Narthecium ossifragum acidic fens
        
      • Q224 : Eriophorum angustifolium fens
        
      • Q225 : Dunal sedge acidic fens
        
      • Q226 : Boreal acidic Sphagnum fens
        
      • Q227 : Myrica gale scrub on poor fens
        
      • Q228 : Caucasian acidic fens
        
    • Q23 : Relict mire of Mediterranean mountains
      
    • Q24 : Intermediate fen and soft-water spring mire
      
    • Q25 : Non-calcareous quaking mire
      
  • Q3 : Palsa mires
    
  • Q4 : Base-rich fens and calcareous spring mires
    
  • Q5 : Helophyte beds
    
  • Q6 : Periodically exposed shores
    
• 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
  
• T : Forest and other wooded land
  
• U : Inland habitats with no or little soil and mostly with sparse vegetation
  
• V : Vegetated man-made habitats