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
      
      • MJ111 : Seasonal Arctic pack-ice
        
      • MJ112 : Permanent Arctic pack-ice
        
      • MJ113 : Arctic Ice floes
        
    • MJ12 : Baltic sea ice
      
      • MJ121 : Seasonal Baltic pack-ice
        
      • MJ122 : Baltic Ice floes
        
  • MJ2 : Freshwater ice
    
  • MJ3 : Brine channels
    
    • MJ31 : Arctic brine channels
      
    • MJ32 : Baltic brine channels
      
  • MJ4 : Under-ice habitat
    
    • MJ41 : Arctic under-ice habitat
      
    • MJ42 : Baltic under-ice habitat
      
• N : Coastal habitats
  
• R : Grasslands and lands dominated by forbs, mosses or lichens
  
• S : Heathland, scrub and tundra
  
• T : Forest and other wooded land
  
  • T1 : Deciduous broadleaved forest
    
    • T11 : Temperate Salix and Populus riparian forest
      
    • T12 : Alnus glutinosa-Alnus incana forest on riparian and mineral soils
      
      • T121 : Riverine Fraxinus - Alnus forest, wet at high but not at low water
        
      • T122 : Boreal and boreonemoral Alnus forests
        
      • T123 : Nemoral Alnus forests
        
    • T13 : Temperate hardwood riparian forest
      
    • T14 : Mediterranean and Macaronesian riparian forest
      
    • T15 : Broadleaved swamp forest on non-acid peat
      
    • T16 : Broadleaved mire forest on acid peat
      
    • T17 : Fagus forest on non-acid soils
      
    • T18 : Fagus forest on acid soils
      
    • T19 : Temperate and submediterranean thermophilous deciduous forest
      
    • T1A : Mediterranean thermophilous deciduous forest
      
      • T1A1 : Hellenic Quercus macrolepis forests
        
      • T1A2 : Apulian valonia oak forests
        
    • T1B : Acidophilous Quercus forest
      
      • T1B1 : Atlantic Quercus robur - Betula forests
        
      • T1B2 : Atlantic acidophilous Fagus - Quercus forests
        
        • T1B21 : Sub-Atlantic sessile oak forests
          
        • T1B22 : Armorican acidophile oak forests
          
        • T1B23 : Northern dune oak forests
          
      • T1B3 : Atlantic Quercus petraea forests
        
        • T1B31 : Irish sessile oak forests
          
        • T1B32 : British sessile oak forests
          
      • T1B4 : Aquitano-Ligerian Quercus forests on podsols
        
      • T1B5 : Aquitano-Ligerian Quercus forests on leached or acid soils
        
      • T1B6 : Ibero-Atlantic acidophilous Quercus forests
        
        • T1B61 : Pyrenean acidophilous oak forests
          
        • T1B62 : Cantabrian acidophilous oak forests
          
        • T1B63 : Luso-Galician collinar acidophilous oak forests
          
        • T1B64 : Luso-Galician montane acidophilous oak forests
          
      • T1B7 : Medio-European acidophilous Quercus forests
        
      • T1B8 : Insubrian acidophilous Quercus forests
        
      • T1B9 : Portuguese Quercus robur forests
        
      • T1BA : Continental Quercus petraea forests
        
    • T1C : Temperate and boreal mountain Betula and Populus tremula forest on mineral soils
      
    • T1D : Southern European mountain Betula and Populus tremula forest on mineral soils
      
    • T1E : Carpinus and Quercus mesic deciduous forest
      
    • T1F : Ravine forest
      
    • T1G : Alnus cordata forest
      
    • T1H : Broadleaved deciduous plantation of non site-native trees
      
    • T1J : Deciduous self sown forest of non site-native trees
      
    • T1K : Broadleaved deciduous plantation of site-native trees
      
  • T2 : Broadleaved evergreen forest
    
  • T3 : Coniferous forest
    
  • T4 : Lines of trees, small anthropogenic forests, recently felled forest, early-stage forest and coppice
    
• U : Inland habitats with no or little soil and mostly with sparse vegetation
  
• V : Vegetated man-made habitats