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
  
  • MJ1 : Sea ice
    
    • MJ11 : Arctic sea ice
      
    • MJ12 : Baltic sea ice
      
  • MJ2 : Freshwater ice
    
    • MJ21 : Arctic freshwater ice
      
  • MJ3 : Brine channels
    
    • MJ31 : Arctic brine channels
      
    • MJ32 : Baltic brine channels
      
  • MJ4 : Under-ice habitat
    
• N : Coastal habitats
  
• Q : Wetlands
  
  • Q1 : Raised and blanket bogs
    
  • Q2 : Valley mires, poor fens and transition mires
    
    • Q21 : Oceanic valley mire
      
    • Q22 : Poor fen
      
    • Q23 : Relict mire of Mediterranean mountains
      
    • Q24 : Intermediate fen and soft-water spring mire
      
    • Q25 : Non-calcareous quaking mire
      
  • Q3 : Palsa mires
    
    • Q31 : Palsa mire
      
  • Q4 : Base-rich fens and calcareous spring mires
    
  • Q5 : Helophyte beds
    
  • Q6 : Periodically exposed shores
    
• 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
    
    • 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
      
• U : Inland habitats with no or little soil and mostly with sparse vegetation
  
• V : Vegetated man-made habitats