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
  
• Q : Wetlands
  
• 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
    
    • S41 : Wet heath
      
    • S42 : Dry heath
      
    • S43 : Macaronesian heath
      
  • S5 : Maquis, arborescent matorral and thermo-Mediterranean scrub
    
    • S51 : Mediterranean maquis and arborescent matorral
      
      • S511 : Evergreen Quercus matorral
        
      • S512 : Olea europaea and Pistacia lentiscus matorral
        
      • S513 : Juniper matorral
        
      • S514 : Pinus matorral
        
      • S515 : Tetraclinis articulata matorral
        
      • S516 : Deciduous Quercus matorral
        
      • S517 : Arid zone matorral
        
      • S518 : Laurus nobilis matorral
        
      • S519 : Cypress matorral
        
      • S51A : Zelkova matorral
        
      • S51B : High maquis
        
      • S51C : Low ericaceous maquis
        
      • S51D : Tall Cistus maquis
        
      • S51E : Low Cistus maquis
        
      • S51F : Low Cistus - Lavandula stoechas maquis
        
      • S51G : Low sparse maquis
        
      • S51H : Cytisus-dominated maquis
        
      • S51J : Thermo-Mediterranean brushes, thickets and heath-garrigues
        
      • S51K : Euphorbia dendroides formations
        
      • S51L : Ampelodesmos mauritanica -dominated garrigues
        
      • S51M : Chamaerops humilis brush
        
      • S51N : Thermo-Mediterranean broom fields (retamares)
        
      • S51P : Mediterranean gorse-heaths
        
      • S51Q : Iberian thermo-Mediterranean garrigues
        
      • S51R : Stauracanthus boivinii gorse-heaths
        
      • S51S : Cabo de Sao Vicente brushes
        
      • S51T : Thermo-Mediterranean heaths
        
    • S52 : Submediterranean pseudomaquis
      
    • S53 : Spartium junceum scrub
      
    • S54 : Thermomediterranean arid scrub
      
  • S6 : Garrigue
    
    • S61 : Western basiphilous garrigue
      
    • S62 : Western acidophilous garrigue
      
    • S63 : Eastern garrigue
      
    • S64 : Macaronesian garrigue
      
    • S65 : Mediterranean gypsum scrub
      
    • S66 : Mediterranean halo-nitrophilous scrub
      
      • S661 : Canary Island xero-halophilous scrubs
        
      • S662 : Mediterranean halo-nitrophilous scrubs
        
      • S663 : Interior Iberian salt scrubs
        
    • 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
    
  • S9 : Riverine and fen scrubs
    
• T : Forest and other wooded land
  
• 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
    
  • U5 : Miscellaneous inland habitats usually with very sparse or no vegetation
    
    • U51 : Fjell field
      
    • U52 : Polar desert
      
    • U53 : Glacial moraines with very sparse or no vegetation
      
  • U6 : Recent volcanic features
    
    • U61 : Subarctic volcanic field
      
    • U62 : Mediterranean, Macaronesian and temperate volcanic field
      
• V : Vegetated man-made habitats
  
  • V1 : Arable land and market gardens
    
  • V2 : Cultivated areas of gardens and parks
    
  • V3 : Artificial grasslands and herb dominated habitats
    
  • V4 : Hedgerows
    
  • V5 : Shrub plantations
    
  • V6 : Tree dominated man-made habitats