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Mussel beds on circalittoral rock

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English name Mussel beds on circalittoral rock Open code browser    Diagram icon

EUNIS habitat type code   A4.24 Level   4
Edition   EUNIS Habitat Classification 2012 - a revision of the habitat classification descriptions.

Description ( English )

This habitat type occurs on moderately wave-exposed upper circalittoral bedrock subject to strong or moderately strong tidal streams. This complex is characterised by dense aggregations of the mussels [Mytilus edulis] or [Musculus discors] carpeting the underlying substrata. Sponges that may be recorded in this complex are [Scypha ciliata], [Tethya aurantium], [Pachymatisma johnstonia], [Dysidea fragilis] and [Cliona celata]. A sparse hydroid/bryozoan turf composed primarily of [Nemertesia antennina], [Alcyonidium diaphanum] and [Flustra foliacea] is often recorded. Anemones present are [Urticina felina] and [Sagartia elegans]. Other species recorded are the crabs [Cancer pagurus], [Carcinus maenas] and [Necora puber], the starfish [Crossaster papposus] and [Asterias rubens], and [Alcyonium digitatum] and in this upper circalittoral complex, algae species such as [Dictyota dichotoma], [Cryptopleura ramosa] and [Plocamium cartilagineum].

Source

Connor, D.W., Allen, J.H., Golding, N., Howell, K.L., Lieberknecht, L.M., Northen, K.O. & Reker, J.B. [edited ETC/BD] (2004)

External links


Relationships with other classifications

Classification Code Title Relation type
EUNIS Habitat Classification 200410 A4.24 Mussel beds on circalittoral rock same
EUNIS Habitat Classification 200308 A3.64 Mussel beds on circalittoral rock same
EUNIS Habitat Classification 200202 A3.64 Mussel beds on moderately exposed circalittoral rock same
EUNIS Habitat Classification 199910 A3.64 Mussel beds on moderately exposed circalittoral rock same
EUNIS Habitat Classification 199811 A3.65 Mussel beds on moderately exposed circalittoral rock same
EUNIS Habitat Classification 199712 A5.25 Mussel beds on moderately exposed circalittoral rock same
Palaearctic Habitat Classification 200112 11.254 Mussel beds wider
Palaearctic Habitat Classification 199905 11.254 Part of Mussel beds narrower
Palaearctic Habitat Classification 1997 11.254 Part of Mussel beds narrower
Palaearctic Habitat Classification 1996 11.254   narrower
Palaearctic Habitat Classification 1993 11.254   narrower
CORINE Biotopes Classification 1991 11.254   narrower
CORINE Land Cover 5.2.3. Sea and ocean n/a
Marine Habitat Classification Britain/Ireland 0405 CR.MCR.CMus Circalittoral mussel beds on rock source
MNCR BioMar 97.06 (Britain & Ireland) MCR.M Mussel beds (open coast circalittoral rock/mixed substrata) same
MNCR BioMar 96.7 (Britain & Ireland) MCR.M   same
  A Marine habitats Go to key navigator, starting with this habitat    Ancestor
  A4 Circalittoral rock and other hard substrata Go to key navigator, starting with this habitat    Ancestor
  A4.2 Atlantic and Mediterranean moderate energy circalittoral rock    Parent
EUNIS

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