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
        
      • Q222 : Carex nigra, Carex canescens, Carex echinata fens
        
        • Q2221 : Peri-Alpine black-white-star and tall bog sedge fens
          
        • Q2222 : Sub-Atlantic black-white-star sedge fens
          
        • Q2223 : British black-white-star sedge acidic fens
          
        • Q2224 : Pyrenean black sedge acidic fens
          
        • Q2225 : Iberian black sedge acidic fens
          
        • Q2226 : Peri-Danubian black-white-star sedge 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
    
    • Q51 : Tall-helophyte bed
      
    • Q52 : Small-helophyte bed
      
    • Q53 : Tall-sedge bed
      
    • Q54 : Inland saline or brackish helophyte bed
      
  • Q6 : Periodically exposed shores
    
• R : Grasslands and lands dominated by forbs, mosses or lichens
  
• 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