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
  
  • MH1 : Neuston
    
  • MH2 : Completely mixed water column with reduced salinity
    
  • MH3 : Completely mixed water column with full salinity
    
  • MH4 : Partially mixed water column with reduced salinity and medium or long residence time
    
  • MH5 : Unstratified water column with reduced salinity
    
  • MH6 : Vertically stratified water column with reduced salinity
    
  • MH7 : Fronts in reduced salinity water column
    
  • MH8 : Unstratified water column with full salinity
    
  • MH9 : Vertically stratified water column with full salinity
    
  • MHA : Fronts in full salinity water column
    
• MJ : Ice-associated marine habitats
  
• N : Coastal habitats
  
  • N1 : Coastal dunes and sandy shores
    
  • N2 : Coastal shingle
    
  • N3 : Rock cliffs, ledges and shores, including the supralittoral
    
• 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
      
      • T121 : Riverine Fraxinus - Alnus forest, wet at high but not at low water
        
      • T122 : Boreal and boreonemoral Alnus forests
        
      • T123 : Nemoral Alnus forests
        
    • T13 : Temperate hardwood riparian forest
      
      • T131 : Mixed Quercus - Ulmus - Fraxinus forest of great rivers
        
    • T14 : Mediterranean and Macaronesian riparian forest
      
      • T141 : Mediterranean and Macaronesian Salix forest
        
        • T1411 : Mediterranean tall Salix galleries
          
        • T1412 : Canary Island Salix galleries
          
      • T142 : Mediterranean riparian Populus forests
        
      • T143 : Mediterranean riparian Ulmus forests
        
      • T144 : Mediterranean riparian Fraxinus forests
        
      • T145 : Mediterranean riverine Ostrya carpinifolia galleries
        
      • T146 : Mediterraneo-Pontic riverine Fraxinus forests
        
      • T147 : Ponto-Sarmatic mixed Populus riverine forests
        
      • T148 : Irano-Anatolian mixed riverine forests
        
      • T149 : Platanus orientalis forests
        
      • T14A : Liquidambar orientalis forests
        
      • T14B : Southern Alnus and Betula galleries
        
    • 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
      
    • 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
      
      • T1H1 : Populus plantations
        
      • T1H2 : Deciduous exotic Quercus plantations
        
      • T1H3 : Robinia plantations
        
      • T1H4 : Other broadleaved deciduous plantations
        
    • 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