EUNIS habitat type hierarchical view

• A : Marine habitats
  
  • A1 : Littoral rock and other hard substrata
    
  • A2 : Littoral sediment
    
  • A3 : Infralittoral rock and other hard substrata
    
  • A4 : Circalittoral rock and other hard substrata
    
  • A5 : Sublittoral sediment
    
  • A6 : Deep-sea bed
    
    • A6.1 : Deep-sea rock and artificial hard substrata
    • A6.2 : Deep-sea mixed substrata
    • A6.3 : Deep-sea sand
    •  A6.4 : Deep-sea muddy sand
    • A6.5 : Deep-sea mud
    • A6.6 : Deep-sea bioherms
    • A6.7 : Raised features of the deep-sea bed
    • A6.8 : Deep-sea trenches and canyons, channels, slope failures and slumps on the continental slope
    • A6.9 : Vents, seeps, hypoxic and anoxic habitats of the deep sea
  • A7 : Pelagic water column
    
  • A8 : Ice-associated marine habitats
    
• B : Coastal habitats
  
  • B1 : Coastal dunes and sandy shores
    
  • B2 : Coastal shingle
    
  • B3 : Rock cliffs, ledges and shores, including the supralittoral
    
• C : Inland surface waters
  
  • C1 : Surface standing waters
    
  • C2 : Surface running waters
    
    • C2.1 : Springs, spring brooks and geysers
    • C2.2 : Permanent non-tidal, fast, turbulent watercourses
      •  C2.21 : Epirhithral and metarhithral streams
      •  C2.22 : Hyporhithral streams
      •  C2.23 : Glacial meltwaters
      •  C2.24 : Waterfalls
      •  C2.25 : Acid oligotrophic vegetation of fast-flowing streams
      •  C2.26 : Lime-rich oligotrophic vegetation of fast-flowing streams
      •  C2.27 : Mesotrophic vegetation of fast-flowing streams
      •  C2.28 : Eutrophic vegetation of fast-flowing streams
    • C2.3 : Permanent non-tidal, smooth-flowing watercourses
    • C2.4 : Tidal rivers, upstream from the estuary
    •  C2.5 : Temporary running waters
    •  C2.6 : Films of water flowing over rocky watercourse margins
  • C3 : Littoral zone of inland surface waterbodies
    
• D : Mires, bogs and fens
  
  • D1 : Raised and blanket bogs
    
  • D2 : Valley mires, poor fens and transition mires
    
  • D3 : Aapa, palsa and polygon mires
    
  • D4 : Base-rich fens and calcareous spring mires
    
  • D5 : Sedge and reedbeds, normally without free-standing water
    
  • D6 : Inland saline and brackish marshes and reedbeds
    
• E : Grasslands and lands dominated by forbs, mosses or lichens
  
• F : Heathland, scrub and tundra
  
• G : Woodland, forest and other wooded land
  
• H : Inland unvegetated or sparsely vegetated habitats
  
  • H1 : Terrestrial underground caves, cave systems, passages and waterbodies
    
    •  H1.1 : Cave entrances
    • H1.2 : Cave interiors
    •  H1.3 : Dark underground passages
    • H1.4 : Lava tubes
    • H1.5 : Underground standing waterbodies
    • H1.6 : Underground running waterbodies
    •  H1.7 : Disused underground mines and tunnels
  • H2 : Screes
    
  • H3 : Inland cliffs, rock pavements and outcrops
    
  • H4 : Snow or ice-dominated habitats
    
  • H5 : Miscellaneous inland habitats with very sparse or no vegetation
    
  • H6 : Recent volcanic features
    
    • H6.1 : Active volcanic features
    • H6.2 : Inactive recent volcanic features
• I : Regularly or recently cultivated agricultural, horticultural and domestic habitats
  
• J : Constructed, industrial and other artificial habitats
  
  • J1 : Buildings of cities, towns and villages
    
  • J2 : Low density buildings
    
    •  J2.1 : Scattered residential buildings
    •  J2.2 : Rural public buildings
    • J2.3 : Rural industrial and commercial sites still in active use
      •  J2.31 : Rural commercial units
      •  J2.32 : Rural industrial sites
    • J2.4 : Agricultural constructions
    • J2.5 : Constructed boundaries
    • J2.6 : Disused rural constructions
    •  J2.7 : Rural construction and demolition sites
  • J3 : Extractive industrial sites
    
  • J4 : Transport networks and other constructed hard-surfaced areas
    
  • J5 : Highly artificial man-made waters and associated structures
    
  • J6 : Waste deposits
    
• X : Habitat complexes
  
  •  X01 : Estuaries
    
  •  X02 : Saline coastal lagoons
    
  •  X03 : Brackish coastal lagoons
    
  •  X04 : Raised bog complexes
    
  •  X05 : Snow patches
    
  •  X06 : Crops shaded by trees
    
  •  X07 : Intensively-farmed crops interspersed with strips of natural and/or semi-natural vegetation
    
  •  X09 : Pasture woods (with a tree layer overlying pasture)
    
  •  X10 : Mosaic landscapes with a woodland element (bocages)
    
  •  X11 : Large parks
    
  •  X13 : Land sparsely wooded with broadleaved deciduous trees
    
  •  X14 : Land sparsely wooded with broadleaved evergreen trees
    
  •  X15 : Land sparsely wooded with coniferous trees
    
  •  X16 : Land sparsely wooded with mixed broadleaved and coniferous trees
    
  •  X18 : Wooded steppe
    
  •  X19 : Wooded tundra
    
  •  X20 : Treeline ecotones
    
  •  X22 : Small city centre non-domestic gardens
    
  •  X23 : Large non-domestic gardens
    
  •  X24 : Domestic gardens of city and town centres
    
  •  X25 : Domestic gardens of villages and urban peripheries
    
  •  X27 : Machair complexes
    
  •  X28 : Blanket bog complexes
    
  •  X29 : Salt lake islands
    
  •  X30 : Bentho-pelagic habitats
    
  •  X31 : Mosaics of mobile and non-mobile substrata in the littoral zone
    
  •  X32 : Mosaics of mobile and non-mobile substrata in the infralittoral zone
    
  •  X33 : Mosaics of mobile and non-mobile substrata in the circalittoral zone
    
  •  X34 : Anchihaline caves