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
  
  • R1 : Dry grasslands
    
  • R2 : Mesic grasslands
    
    • R21 : Mesic permanent pasture of lowlands and mountains
      
    • R22 : Low and medium altitude hay meadow
      
    • R23 : Mountain hay meadow
      
      • R231 : Medio-European submontane hay meadows
        
        • R2311 : Western Hercynian submontane hay meadows
          
        • R2312 : Eastern Hercynio-Baltic submontane hay meadows
          
        • R2313 : Carpathian submontane hay meadows
          
        • R2314 : Northern Iberian submontane hay meadows
          
        • R2315 : Alpic submontane hay meadows
          
        • R2316 : Jurassian submontane hay meadows
          
        • R2317 : Illyrian submontane hay meadows
          
        • R2318 : Southwestern Moesian submontane hay meadows
          
      • R232 : Boreal and sub-boreal meadows
        
      • R233 : Alpic mountain hay meadows
        
      • R234 : Ponto-Caucasian hay meadows
        
      • R235 : Balkan mountain hay meadows
        
    • R24 : Iberian summer pasture (vallicar)
      
  • R3 : Seasonally wet and wet grasslands
    
  • R4 : Alpine and subalpine grasslands
    
    • R41 : Snow-bed vegetation
      
    • R42 : Boreal and arctic acidophilous alpine grassland
      
    • R43 : Temperate acidophilous alpine grassland
      
    • R44 : Arctic-alpine calcareous grassland
      
      • R441 : Closed calciphile arctic-alpine grassland
        
      • R442 : Arctic-alpine wind edge Kobresia myosuroides swards
        
        • R4421 : Alpine naked-rush swards
          
        • R4422 : Pyrenean naked-rush swards
          
        • R4423 : Cantabrian naked-rush swards
          
        • R4424 : Carpathian naked-rush swards
          
        • R4425 : Scandinavian naked-rush swards
          
      • R443 : Arctic-alpine calciphilous stepped and garland grassland
        
      • R444 : Ponto-Caucasian alpine grassland
        
    • R45 : Alpine and subalpine calcareous grassland of the Balkans and Apennines
      
  • 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
      
    • 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
      
    • 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
      
    • 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
    
    • T41 : Early-stage natural and semi-natural forest and regrowth
      
    • T42 : Coppice and early stage plantations
      
    • T43 : Recently felled areas
      
      • T431 : Recently felled areas, formerly broadleaved trees
        
      • T432 : Recently felled areas, formerly coniferous trees
        
      • T433 : Recently felled areas, formerly mixed broadleaved and coniferous trees
        
      • T434 : Shrubby clearings
        
• U : Inland habitats with no or little soil and mostly with sparse vegetation
  
• V : Vegetated man-made habitats