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
    
    • MH61 : Arctic vertically stratified water column with reduced salinity
      
    • MH62 : Atlantic vertically stratified water column with reduced salinity
      
    • MH63 : Baltic vertically stratified water column with reduced salinity
      
    • MH64 : Black Sea vertically stratified water column with reduced salinity
      
      • MH641 : Black Sea water column with ephemeral thermal stratification and reduced salinity
        
      • MH642 : Black Sea water column with seasonal thermal stratification and reduced salinity
        
      • MH643 : Black Sea water column with permanent thermal stratification and reduced salinity
        
      • MH644 : Black Sea water column with ephemeral halocline and reduced salinity
        
      • MH645 : Black Sea water column with seasonal halocline and reduced salinity
        
      • MH646 : Black Sea water column with permanent halocline and reduced salinity
        
      • MH647 : Black Sea water column with ephemeral oxygen stratification and reduced salinity
        
      • MH648 : Black Sea water column with seasonal oxygen stratification and reduced salinity
        
      • MH649 : Black Sea water column with permanent oxygen stratification and reduced salinity
        
    • MH65 : Mediterranean vertically stratified water column with reduced salinity
      
  • MH7 : Fronts in reduced salinity water column
    
    • MH71 : Arctic fronts in reduced salinity water column
      
    • MH72 : Atlantic fronts in reduced salinity water column
      
    • MH73 : Baltic fronts in reduced salinity water column
      
    • MH74 : Black Sea fronts in reduced salinity water column
      
    • MH75 : Mediterranean 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
  
• R : Grasslands and lands dominated by forbs, mosses or lichens
  
• S : Heathland, scrub and tundra
  
  • S1 : Tundra
    
    • S11 : Shrub tundra
      
    • S12 : Moss and lichen tundra
      
  • S2 : Arctic, alpine and subalpine scrub
    
  • S3 : Temperate and mediterranean-montane scrub
    
  • S4 : Temperate shrub heathland
    
  • S5 : Maquis, arborescent matorral and thermo-Mediterranean scrub
    
  • S6 : Garrigue
    
    • S61 : Western basiphilous garrigue
      
    • S62 : Western acidophilous garrigue
      
    • S63 : Eastern garrigue
      
      • S631 : Eastern Quercus coccifera garrigues
        
      • S632 : Eastern Rosmarinus officinalis garrigues
        
      • S633 : Eastern Cistus garrigues
        
      • S634 : Eastern Euphorbia garrigues
        
      • S635 : Eastern Juniperus oxycedrus garrigues
        
      • S636 : Eastern Lavandula garrigues
        
      • S637 : Eastern Teucrium and other labiates garrigues
        
      • S638 : Eastern Paliurus spina-christi garrigues
        
      • S639 : Eastern broom garrigues
        
      • S63A : Ebenus cretica brushes
        
      • S63B : Eastern Helichrysum and other composite garrigues
        
      • S63C : Eastern Erica garrigues
        
      • S63D : Arbutus andrachne garrigues
        
      • S63E : Eastern Globularia garrigues
        
      • S63F : Eastern Helianthemum and Fumana garrigues
        
      • S63G : Eastern Thymelaea garrigues
        
      • S63H : Eastern Bupleurum garrigues
        
      • S63J : East Mediterranean pre-desert scrub
        
      • S63K : Illyrian Quercus coccifera garrigues
        
      • S63L : Illyrian Rosmarinus officinalis garrigues
        
      • S63M : Illyrian Cistus garrigues
        
      • S63N : Illyrian Euphorbia garrigues
        
      • S63P : Illyrian Juniperus oxycedrus garrigues
        
      • S63Q : Illyrian Teucrium and other labiates garrigues
        
      • S63R : Illyrian Paliurus spina-christi garrigues
        
      • S63S : Illyrian broom garrigues
        
      • S63T : Illyrian Helichrysum and other composite garrigues
        
      • S63U : Illyrian Erica garrigues
        
      • S63V : Crimean garrigues
        
      • S63X : South-Euxinian garrigues
        
      • S63Y : Thracian garrigues
        
      • S63Z : Balkan peninsula supra-Mediterranean garrigues
        
    • S64 : Macaronesian garrigue
      
    • S65 : Mediterranean gypsum scrub
      
    • S66 : Mediterranean halo-nitrophilous scrub
      
    • S67 : Aralo-Caspian semi-desert
      
    • S68 : Semi-desert sand dune with sparse scrub
      
  • S7 : Spiny Mediterranean heaths (phrygana, hedgehog-heaths and related coastal cliff vegetation)
    
  • S8 : Thermo-Atlantic xerophytic scrub
    
    • S81 : Canarian xerophytic scrub
      
      • S811 : Western Canary Island Euphorbia communities
        
      • S812 : Western Canary Island saxicolous formations
        
      • S813 : Eastern Canary Island xerophytic communities
        
      • S814 : Canary Island Launaea scrub
        
    • S82 : Madeiran xerophytic scrub
      
  • S9 : Riverine and fen scrubs
    
• T : Forest and other wooded land
  
  • T1 : Deciduous broadleaved forest
    
  • 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