AB.J4U Baltic aphotic sand characterized by no macrocommunity


Author                                     

HELCOM RED LIST Biotope Expert Team

Textual description            

Balticaphotic bottoms with at least 90 % coverage of sand.Sand has less than 20 % of mud/silt/clay fraction (<63 µm), and the proportion of sand (grain size 0.063–2 mm) exceeds 70% of the combined gravel and sand fraction. Macro- epi- or infauna is not present.

Physical environment       

Substrate is sand. Depth below approximately 30 m. Appears in high energy exposure areas.

Geographic range 

Whole Baltic Sea

Correspondence with other classification systems               

HELCOM 1998:
2.5 Sandy bottoms

2.5.1 Aphotic zone

EUNIS 2012:

A5 Sublittoral sediment

A5.2 Sublittoral sand

A5.27 Deep circalittoral sand

A5.273 Baltic sandy bottoms of the aphotic zone

http://eunis.eea.europa.eu/habitats/2620


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