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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MH7 : Fronts in reduced salinity water column
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MH71 : Arctic fronts in reduced salinity water column
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MH72 : Atlantic fronts in reduced salinity water column
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MH73 : Baltic fronts in reduced salinity water column
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MH74 : Black Sea fronts in reduced salinity water column
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MH75 : Mediterranean fronts in reduced salinity water column
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![Arctic euphotic (epipelagic) zone in unstratified full salinity water](images/img_bullet.gif)
![Arctic mesopelagic zone in unstratified full salinity water](images/img_bullet.gif)
![Arctic bathypelagic zone in unstratified full salinity water](images/img_bullet.gif)
![Arctic abyssopelagic zone in unstratified full salinity water](images/img_bullet.gif)
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![Black Sea water column with ephemeral thermal stratification and full salinity](images/img_bullet.gif)
![Black Sea water column with seasonal thermal stratification and full salinity](images/img_bullet.gif)
![Black Sea water column with permanent thermal stratification and full salinity](images/img_bullet.gif)
![Black Sea water column with ephemeral halocline and full salinity](images/img_bullet.gif)
![Black Sea water column with seasonal halocline and full salinity](images/img_bullet.gif)
![Black Sea water column with permanent halocline and full salinity](images/img_bullet.gif)
![Black Sea water column with ephemeral oxygen stratification and full salinity](images/img_bullet.gif)
![Black Sea water column with seasonal oxygen stratification and full salinity](images/img_bullet.gif)
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