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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MH1 : Neuston
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MH2 : Completely mixed water column with reduced salinity
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MH3 : Completely mixed water column with full salinity
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MH4 : Partially mixed water column with reduced salinity and medium or long residence time
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MH5 : Unstratified water column with reduced salinity
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MH6 : Vertically stratified water column with reduced salinity
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MH61 : Arctic vertically stratified water column with reduced salinity
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MH62 : Atlantic vertically stratified water column with reduced salinity
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MH63 : Baltic vertically stratified water column with reduced salinity
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MH64 : Black Sea vertically stratified water column with reduced salinity
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MH65 : Mediterranean vertically stratified water column with reduced salinity
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![Atlantic ephemeral fronts in reduced salinity water column](images/img_bullet.gif)
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![Atlantic persistent fronts in reduced salinity water column](images/img_bullet.gif)
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![Atlantic water column with ephemeral thermal stratification and full salinity](images/img_bullet.gif)
![Atlantic water column with seasonal thermal stratification and full salinity](images/img_bullet.gif)
![Atlantic water column with permanent thermal stratification and full salinity](images/img_bullet.gif)
![Atlantic water column with ephemeral halocline and full salinity](images/img_bullet.gif)
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![Atlantic water column with ephemeral oxygen stratification and full salinity](images/img_bullet.gif)
![Atlantic water column with seasonal oxygen stratification and full salinity](images/img_bullet.gif)
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![Boreal siliceous cliffs](images/img_bullet.gif)
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![Boreal and arctic disused siliceous quarries](images/img_bullet.gif)
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![Macaronesian inland cliff](images/img_bullet.gif)
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![Limestone pavement](images/img_bullet.gif)
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![Arable land with unmixed crops grown by low-intensity agricultural methods](images/img_bullet.gif)
![Inundated or inundatable croplands, including rice fields](images/img_bullet.gif)
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