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
      
    • 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
      
      • T3A1 : Maritime Pinus pinaster ssp. atlantica forests
        
      • T3A2 : Pinus pinaster ssp. pinaster (Pinus mesogeensis) forests
        
      • T3A3 : Pinus pinea forests
        
      • T3A4 : Pinus halepensis forests
        
      • T3A5 : Pinus brutia forests
        
        • T3A51 : Aegean pine forests of Crete
          
        • T3A52 : Aegean pine forests of Lesbos
          
        • T3A53 : Aegean pine forests of Samos
          
        • T3A54 : Aegean pine forests of Chios
          
        • T3A55 : Aegean pine forests of Thasos
          
        • T3A56 : Aegean pine forests of Samothrace
          
        • T3A57 : Aegean pine forests of Rhodes
          
        • T3A58 : Aegean pine forests of Karpathos
          
        • T3A59 : Aegean pine forests of the Dodecanese
          
        • T3A5A : Thracio-Macedonian Aegean pine forests
          
        • T3A5B : Anatolian Aegean pine forests
          
        • T3A5C : Cyprian Aegean pine forests
          
        • T3A5D : East Mediterranean Aegean pine forests
          
        • T3A5E : Mesopotamian Aegean pine forests
          
        • T3A5F : Crimean Pinus pityusa forests
          
        • T3A5G : Caucasian Aegean pine forests
          
    • 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
      
    • 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
    
  • 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