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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MH41 : Arctic partially mixed water column with reduced salinity and medium or long residence time
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MH42 : Atlantic partially mixed water column with reduced salinity and medium or long residence time
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MH43 : Baltic partially mixed water column with reduced salinity and medium or long residence time
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MH44 : Black Sea partially mixed water column with reduced salinity and medium or long residence time
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MH45 : Mediterranean partially mixed water column with reduced salinity and medium or long residence time
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![Mediterranean water column with ephemeral thermal stratification and full salinity](images/img_bullet.gif)
![Mediterranean water column with seasonal thermal stratification and full salinity](images/img_bullet.gif)
![Mediterranean water column with permanent thermal stratification and full salinity](images/img_bullet.gif)
![Mediterranean water column with ephemeral halocline and full salinity](images/img_bullet.gif)
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![Mediterranean water column with permanent halocline and full salinity](images/img_bullet.gif)
![Mediterranean water column with ephemeral oxygen stratification and full salinity](images/img_bullet.gif)
![Mediterranean water column with seasonal oxygen stratification and full salinity](images/img_bullet.gif)
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![Baltic ephemeral fronts in full salinity water column](images/img_bullet.gif)
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![Baltic persistent fronts in full salinity water column](images/img_bullet.gif)
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![Atlantic [Quercus robur] - [Betula] forests](images/img_bullet.gif)
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![Aquitano-Ligerian [Quercus] forests on podsols](images/img_bullet.gif)
![Aquitano-Ligerian [Quercus] forests on leached or acid soils](images/img_bullet.gif)
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![Insubrian acidophilous [Quercus] forests](images/img_bullet.gif)
![Portuguese [Quercus robur] forests](images/img_bullet.gif)
![Continental [Quercus petraea] forests](images/img_bullet.gif)
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![[Alnus cordata] forest](images/img_bullet.gif)
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![Deciduous self sown forest of non site-native trees](images/img_bullet.gif)
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