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
    
  • MJ2 : Freshwater ice
    
  • MJ3 : Brine channels
    
    • MJ31 : Arctic brine channels
      
    • MJ32 : Baltic brine channels
      
  • MJ4 : Under-ice habitat
    
• N : Coastal habitats
  
• Q : Wetlands
  
• 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
  
  • T1 : Deciduous broadleaved forest
    
    • T11 : Temperate Salix and Populus riparian forest
      
    • T12 : Alnus glutinosa-Alnus incana forest on riparian and mineral soils
      
    • 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
      
      • T161 : Sphagnum Betula forests
        
      • T162 : Alnus swamp forests on acid peat
        
    • T17 : Fagus forest on non-acid soils
      
    • T18 : Fagus forest on acid soils
      
    • T19 : Temperate and submediterranean thermophilous deciduous forest
      
      • T191 : Western Quercus pubescens forests and related communities
        
      • T192 : Cyrno-Sardinian Quercus pubescens forests
        
      • T193 : Eastern Quercus pubescens forests
        
      • T194 : Italo-Illyrian Ostrya carpinifolia sub-thermophilous Quercus forests
        
      • T195 : Southeastern sub-thermophilous Quercus forests
        
      • T196 : Balkano-Anatolian thermophilous Quercus forests
        
      • T197 : Afro-Iberian thermophilous Quercus forests
        
        • T1971 : Spanish Quercus faginea forests
          
        • T1972 : Portuguese Quercus faginea forests
          
        • T1973 : Andalusian Quercus canariensis forests
          
        • T1974 : Catalonian Quercus canariensis stands
          
        • T1975 : Balearic Quercus faginea forests
          
      • T198 : Quercus trojana forest
        
      • T199 : Steppe Quercus forests
        
      • T19A : Quercus pyrenaica forest
        
      • T19B : Mixed thermophilous forest
        
      • T19C : Castanea sativa forest
        
    • T1A : Mediterranean thermophilous deciduous forest
      
    • T1B : Acidophilous Quercus forest
      
    • 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
      
      • T1D1 : Iberian acidophilous birch forests
        
      • T1D2 : Insubrian acidophilous birch forests
        
      • T1D3 : Pyrenean birch forests
        
      • T1D4 : Apennine birch forests
        
      • T1D5 : Sub-Mediterranean Populus tremula stands
        
      • T1D6 : Corsican Betula forests
        
      • T1D7 : Montane Betula celtiberica forests
        
      • T1D8 : Mount Etna Betula stands
        
    • 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