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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MH51 : Arctic unstratified water column with reduced salinity
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MH52 : Atlantic unstratified water column with reduced salinity
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MH53 : Baltic unstratified water column with reduced salinity
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MH54 : Black Sea unstratified water column with reduced salinity
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MH55 : Mediterranean unstratified water column with reduced salinity
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![Mediterranean water column with ephemeral thermal stratification and reduced salinity](images/img_bullet.gif)
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![Mediterranean water column with ephemeral halocline and reduced salinity](images/img_bullet.gif)
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![Mediterranean water column with ephemeral oxygen stratification and reduced salinity](images/img_bullet.gif)
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![Mediterranean water column with permanent oxygen stratification and reduced salinity](images/img_bullet.gif)
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