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
      
      • T321 : Neutrophile medio-European Abies forests
        
      • T322 : Calciphilous Abies alba forests
        
      • T323 : Acidophilous Abies alba forests
        
        • T3231 : Inner Alpine acidophile fir forests
          
        • T3232 : Acidophile Hercynio-Alpine fir forests
          
        • T3233 : Alpenrose fir forests
          
        • T3234 : Holy Cross fir forests
          
        • T3235 : Bazzania fir forests
          
      • T324 : Corsican Abies alba forests
        
      • T325 : Moesian Abies alba forests
        
      • T326 : Abies reforestation
        
      • T327 : Picea abies reforestation
        
      • T328 : Serpentine Abies alba forests
        
    • T33 : Mediterranean mountain Abies forest
      
      • T331 : Southern Apennine Abies alba forests
        
      • T332 : Balkano-Pontic Abies forests
        
      • T333 : Aegean Abies forests
        
      • T334 : Abies pinsapo forests
        
      • T335 : Relict Abies nebrodensis stands
        
    • 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
      
      • T371 : Iberian calcareous Pinus sylvestris forest
        
      • T372 : Iberian silicicolous Pinus sylvestris forests
        
      • T373 : Pinus salzmannii forests
        
        • T3731 : Causses Salzmann's pine forests
          
        • T3732 : Pre-Pyrenean Salzmann's pine forests
          
        • T3733 : Northern-Iberian Salzmann's pine forests
          
        • T3734 : Cordilleran Salzmann's pine forests
          
        • T3735 : Southern-Iberian Salzmann's pine forests
          
        • T3736 : Baetic Salzmann's pine forests
          
      • T374 : Corsican Pinus laricio forests
        
      • T375 : Calabrian Pinus laricio forests
        
    • 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
      
      • T3B1 : Pinus canariensis - Cistus symphytifolius forests
        
      • T3B2 : Pinus canariensis - dry scrub forests
        
      • T3B3 : Pinus canariensis - heath forests
        
      • T3B4 : Pinus canariensis - Adenocarpus viscosus forests
        
      • T3B5 : Pinus canariensis - Juniperus cedrus forests
        
    • T3C : Taxus baccata forest
      
      • T3C1 : Western Palaearctic Taxus baccata forests
        
    • T3D : Mediterranean Cupressaceae forest
      
    • T3E : Macaronesian Juniperus forest
      
      • T3E1 : Canary Island juniper forests
        
      • T3E2 : Azorean juniper forests
        
      • T3E3 : Macaronesian Phoenician juniper forests
        
    • 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
    
    • T41 : Early-stage natural and semi-natural forest and regrowth
      
    • T42 : Coppice and early stage plantations
      
    • T43 : Recently felled areas
      
• 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
    
    • U41 : Snow pack
      
    • U42 : Ice cap and glacier
      
    • U43 : Rock glacier and unvegetated ice-dominated moraine
      
  • U5 : Miscellaneous inland habitats usually with very sparse or no vegetation
    
  • U6 : Recent volcanic features
    
• V : Vegetated man-made habitats