EUNIS habitat classification 2017 > M - Marine benthic habitats > MD6 - Offshore circalittoral mud

Offshore circalittoral mud

Description (English)

In mud and cohesive sandy mud in the offshore circalittoral zone, typically below 50-70 m, a variety of faunal communities may develop, depending upon the level of silt/clay and organic matter in the sediment. Communities are typically dominated by polychaetes but often with high numbers of bivalves such as Thyasiraspp., echinoderms and foraminifera.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type	code MD6
Relation to	Resolution 4 habitat type (used for designation of Emerald sites)

Legal status

Relation to other habitat types mentioned in legal instruments

Legal text	Annex	Name in legal text	Code in legal text	Habitat type relationship	More information
Convention on the conservation of European wildlife and natural habitats	Revised Annex I of Resolution 4 (1996) of the Bern Convention on endangered natural habitats types using the EUNIS habitat classification (year of revision 2010)	Sublittoral sediment	A5	Narrower	https://wcd.coe.int/ViewDoc....ckColorLogged=FDC864 Resolution No. 4 (1996) of the Bern Convention lists endangered natural habitats requiring specific conservation measures [and the designation of Areas of Special Conservation Interest (ASCIs) forming the Emerald network]

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Not available

Other classifications

Classification	Code	Habitat type name	Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012)	A5.37	Deep circalittoral mud	narrower
EUNIS Habitat Classification 2007 (revised descriptions 2012)	A5	Sublittoral sediment	narrower
EUNIS Habitat Classification 2007 (revised descriptions 2012)	A5.3	Sublittoral mud	same

For relation to plant communities (syntaxa), see Vegetation types

History

Classification	Code	Habitat type name	Relationship type
EUNIS Habitat Classification 200410	A5	Sublittoral sediment	same
EUNIS Habitat Classification 200410	A5.3	Sublittoral mud	same
EUNIS Habitat Classification 200410	A5.37	Deep circalittoral mud	same
EUNIS Habitat Classification 200308	A4	Sublittoral sediment	same
EUNIS Habitat Classification 200308	A4.3	Sublittoral mud	same
EUNIS Habitat Classification 200308	A4.74	Animal communities of deep circalittoral muddy bottoms	narrower
EUNIS Habitat Classification 200202	A4.74	Animal communities of deep circalittoral muddy bottoms	same
EUNIS Habitat Classification 200202	A4	Sublittoral sediments	same
EUNIS Habitat Classification 200202	A4.74	Animal communities of deep circalittoral muddy bottoms	narrower
EUNIS Habitat Classification 200202	A4.3	Sublittoral muds	narrower
EUNIS Habitat Classification 199910	A4.3	Sublittoral muds	same
EUNIS Habitat Classification 199910	A4	Sublittoral sediments	same
EUNIS Habitat Classification 199811	A4	Sublittoral sediments	same
EUNIS Habitat Classification 199712	X16	Sublittoral sediments	same
Palaearctic Habitat Classification 199905	11.22	Sublittoral soft seabeds	narrower
Palaearctic Habitat Classification 199905	11.23	Sublittoral pebbly seabeds	narrower
Palaearctic Habitat Classification 1997	11.23	Sublittoral pebbly seabeds	narrower
Palaearctic Habitat Classification 1997	11.22	Sublittoral soft seabeds	narrower
Palaearctic Habitat Classification 1996	11.23		narrower
Palaearctic Habitat Classification 1996	11.22		narrower
Palaearctic Habitat Classification 1993	11.22		narrower
Palaearctic Habitat Classification 1993	11.23		narrower
CORINE Biotopes Classification 1991	11.23		narrower
CORINE Biotopes Classification 1991	11.22		narrower
MNCR BioMar 97.06 (Britain & Ireland)	SS	Sublittoral sediments	same

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