EUNIS habitat classification 2017 > M - Marine benthic habitats > MB6 - Infralittoral mud > MB62 - Atlantic infralittoral mud > MB621 - Vegetated communities on Atlantic infralittoral mud > MB6212 - Mats of Trailliella on Atlantic infralittoral muddy gravel

Mats of Trailliella on Atlantic infralittoral muddy gravel

Description (English)

Dense loose-lying beds of the ' Trailliella ' phase of Bonnemaisonia hamifera may occur in extremely sheltered shallow muddy environments. Beds of this alga are often 10 cm thick but may reach 100 cm at some sites. Other loose-lying algae may also occur such as Audouinella floridula, Phyllophora crispa and species of Derbesia. Often the mud is gravelly or with some cobbles and may be black and anoxic close to the sediment surface. This biotope is widely distributed in lagoons, sealochs and voes but should only be described as MB6-212 when a continuous mat is found. It is likely that the infaunal component of this biotope may be considerably modified by the overwhelming quantity of loose-lying algae.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type	code MB6212
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)	Large shallow inlets and bays	1160	Overlap	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

Algae Phyllophora crispa

Species scientific name	English common name	Species group
Phyllophora crispa		Algae

Other classifications

Classification	Code	Habitat type name	Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012)	A5.526	Mats of Trailliella on infralittoral muddy gravel	same

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

History

Classification	Code	Habitat type name	Relationship type
EUNIS Habitat Classification 200410	A5.526	Mats of Trailliella on infralittoral muddy gravel	same
EUNIS Habitat Classification 200308	A4.412	Mats of Trailliella on infralittoral muddy gravel	same
EUNIS Habitat Classification 200202	A4.412	Mats of Trailliella on shallow-water muddy gravel	same
EUNIS Habitat Classification 199910	A4.412	Mats of Trailliella on shallow-water muddy gravel	same
MNCR BioMar 97.06 (Britain & Ireland)	IMX.KSwMx.Tra	Mats of Trailliella on infralittoral muddy gravel	same

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