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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MH631 : Baltic water column with ephemeral thermal stratification and reduced salinity
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MH632 : Baltic water column with seasonal thermal stratification and reduced salinity
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MH633 : Baltic water column with permanent thermal stratification and reduced salinity
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MH634 : Baltic water column with ephemeral halocline and reduced salinity
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MH635 : Baltic water column with seasonal halocline and reduced salinity
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MH636 : Baltic water column with permanent halocline and reduced salinity
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MH637 : Baltic water column with ephemeral oxygen stratification and reduced salinity
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MH638 : Baltic water column with seasonal oxygen stratification and reduced salinity
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MH639 : Baltic water column with permanent oxygen stratification and reduced salinity
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![Boreal and arctic siliceous scree and block field](images/img_bullet.gif)
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![Boreal and arctic base-rich scree and block field](images/img_bullet.gif)
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![Boreal calcareous cliff communities](images/img_bullet.gif)
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![Boreal and arctic disused chalk and limestone quarries](images/img_bullet.gif)
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