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)
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MH : Pelagic water column
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MJ : Ice-associated marine habitats
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N : Coastal habitats
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R : Grasslands and lands dominated by forbs, mosses or lichens
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S : Heathland, scrub and tundra
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T : Forest and other wooded land
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U : Inland habitats with no or little soil and mostly with sparse vegetation
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U1 : Terrestrial underground caves, cave systems, passages and waterbodies
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U2 : Screes
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U3 : Inland cliffs, rock pavements and outcrops
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U31 : Boreal and arctic siliceous inland cliff
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U32 : Temperate high-mountain siliceous inland cliff
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U33 : Temperate, lowland to montane siliceous inland cliff
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U34 : Mediterranean siliceous inland cliff
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U341 : Oro-Iberian siliceous cliffs
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U342 : Southwestern Alpine siliceous cliffs
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U343 : Cyrno-Sardinian montane and alpine cliffs
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U344 : Peri-Pyrenean montane siliceous cliffs
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U345 : Western Iberian siliceous cliffs
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U346 : West Mediterranean thermophile siliceous cliffs
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U347 : Bare Mediterranean siliceous inland cliff
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U348 : Mediterranean disused siliceous quarries