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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MA1 : Littoral rock
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MA11 : Arctic littoral rock
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MA12 : Atlantic littoral rock
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MA121 : Lichens or small green algae on Atlantic supralittoral and littoral fringe rock
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MA1211 : Yellow and grey lichens on Atlantic supralittoral rock
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MA1212 : Prasiola stipitata on nitrate-enriched supralittoral or littoral fringe rock
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MA1213 : Verrucaria maura on littoral fringe rock
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MA1214 : Blidingia spp. on vertical littoral fringe chalk
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MA1215 : Ulothrix flacca and Urosporaspp. on freshwater-influenced vertical littoral fringe soft rock
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![Chrysophyceae and Haptophyceae on vertical upper littoral fringe soft rock](images/img_bullet.gif)
![Green algal films on upper and mid-shore cave walls and ceilings](images/img_bullet.gif)
![Audouinella purpurea [and] Pilinia maritima [crusts on upper and mid-shore cave walls and ceilings](images/img_bullet.gif)
![Audouinella purpurea [and] Cladophora rupestris [on upper to mid-shore cave walls](images/img_bullet.gif)
![Verrucaria mucosa [and/or] Hildenbrandia rubra [on upper to mid shore cave walls](images/img_bullet.gif)
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![Sponges, bryozoans and ascidians on deeply overhanging lower shore bedrock or caves](images/img_bullet.gif)
![Faunal crusts on wave-surged littoral cave walls](images/img_bullet.gif)
![Sparse fauna (barnacles and spirorbids) on sand/pebble-scoured rock in littoral caves](images/img_bullet.gif)
![Barren and/or boulder-scoured littoral cave walls and floors](images/img_bullet.gif)
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![Arctic circalittoral biogenic habitat](images/img_bullet.gif)
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![Burrowing anemone field in Arctic lower bathyal coarse sediment](images/img_bullet.gif)
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![Arctic water column with ephemeral thermal stratification and reduced salinity](images/img_bullet.gif)
![Arctic water column with seasonal thermal stratification and reduced salinity](images/img_bullet.gif)
![Arctic water column with permanent thermal stratification and reduced salinity](images/img_bullet.gif)
![Arctic water column with ephemeral halocline and reduced salinity](images/img_bullet.gif)
![Arctic water column with seasonal halocline and reduced salinity](images/img_bullet.gif)
![Arctic water column with permanent halocline and reduced salinity](images/img_bullet.gif)
![Arctic water column with ephemeral oxygen stratification and reduced salinity](images/img_bullet.gif)
![Arctic water column with seasonal oxygen stratification and reduced salinity](images/img_bullet.gif)
![Arctic water column with permanent oxygen stratification and reduced salinity](images/img_bullet.gif)
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