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
  
• 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
    
  • T2 : Broadleaved evergreen forest
    
  • T3 : Coniferous forest
    
    • T31 : Temperate mountain Picea forest
      
    • T32 : Temperate mountain Abies forest
      
    • T33 : Mediterranean mountain Abies forest
      
    • T34 : Temperate subalpine Larix, Pinus cembra and Pinus uncinata forest
      
    • T35 : Temperate continental Pinus sylvestris forest
      
    • T36 : Temperate and submediterranean montane Pinus sylvestris-Pinus nigra forest
      
      • T361 : Southeastern European Pinus sylvestris forests
        
      • T362 : Po terrace Pinus sylvestris forests
        
      • T363 : Ponto-Caucasian Pinus sylvestris forests
        
      • T364 : Supra-Mediterranean Pinus sylvestris forests
        
      • T365 : Alpino-Apennine Pinus nigra forests
        
      • T366 : Western Balkanic Pinus nigra forests
        
      • T367 : Pinus pallasiana and Pinus banatica forests
        
      • T368 : Pinus sylvestris forest on chalk in the steppe zone
        
      • T369 : Pinus nigra reforestation
        
    • T37 : Mediterranean montane Pinus sylvestris-Pinus nigra forest
      
    • T38 : Mediterranean montane Cedrus forest
      
    • T39 : Mediterranean and Balkan subalpine Pinus heldreichii-Pinus peuce forest
      
    • T3A : Mediterranean lowland to submontane Pinus forest
      
    • T3B : Pinus canariensis forest
      
    • T3C : Taxus baccata forest
      
    • T3D : Mediterranean Cupressaceae forest
      
    • T3E : Macaronesian Juniperus forest
      
    • T3F : Dark taiga
      
    • T3G : Pinus sylvestris light taiga
      
    • T3H : Larix light taiga
      
    • T3J : Pinus and Larix mire forest
      
      • T3J1 : Boreal Pinus sylvestris bog forests
        
      • T3J2 : Boreal sphagnum Pinus sylvestris fen forests
        
      • T3J3 : Boreal brown moss Pinus sylvestris fen forests
        
      • T3J4 : Pinus mugo bog forests
        
      • T3J5 : Nemoral Pinus sylvestris mire forests
        
      • T3J6 : Balkan Pinus sylvestris mire forests
        
      • T3J7 : Steppe Pinus sylvestris mire forests
        
    • T3K : Picea mire forest
      
    • T3L : Coniferous self sown forest of non site-native trees
      
    • T3M : Coniferous plantation of non site-native trees
      
    • T3N : Coniferous plantation of site-native trees
      
  • 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
  
  • U1 : Terrestrial underground caves, cave systems, passages and waterbodies
    
    • U11 : Cave
      
      • U111 : Troglobiont vertebrate caves
        
      • U112 : Subtroglophile vertebrate caves
        
      • U113 : Troglobiont invertebrate caves
        
      • U114 : Troglophile invertebrate caves
        
      • U115 : Subtroglophile invertebrate caves
        
      • U116 : Caves without vertebrates or invertebrates
        
      • U117 : Lava tubes
        
    • U12 : Disused underground mines and tunnels
      
  • U2 : Screes
    
  • U3 : Inland cliffs, rock pavements and outcrops
    
  • U4 : Snow or ice-dominated habitats
    
  • U5 : Miscellaneous inland habitats usually with very sparse or no vegetation
    
  • U6 : Recent volcanic features
    
• V : Vegetated man-made habitats