Mytilus edulis beds on reduced salinity Atlantic infralittoral rock

Description (English)

This biotope occur in shallow, often tide-swept, reduced salinity conditions. Dense beds of the mussel Mytilus edulis with the occasional barnacle Balanus crenatus. A wide variety of epifaunal colonisers on the mussel valves, including seaweeds, hydroids and bryozoans can be present. Predatory starfish Asterias rubens can be very common in this biotope. This biotope generally appears to lack large kelp plants, although transitional examples containing mussels and kelps plants may also occur. More information needed to validate this description.
Situation: Occurs in tide-swept entrance channels in very enclosed basins of sealochs where the basins are typically of lowered salinity. Also occurs in very sheltered subtidal rock (often vertical) in lagoons.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code MB1261
Relation to Resolution 4 habitat type (used for designation of Emerald sites)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Asterias rubens
Invertebrates Balanus crenatus
Invertebrates Mytilus edulis
Species scientific name English common name Species group
Asterias rubens Invertebrates
Balanus crenatus Invertebrates
Mytilus edulis Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) A3.361 Mytilus edulis beds on reduced salinity infralittoral rock same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A3.361 Mytilus edulis beds on reduced salinity infralittoral rock same
EUNIS Habitat Classification 200308 A3.321 Mytilus edulis beds on reduced salinity infralittoral rock same
EUNIS Habitat Classification 200202 A3.321 Mytilus edulis beds on reduced salinity tide-swept infralittoral rock same
EUNIS Habitat Classification 199910 A3.321 Mytilus edulis beds on reduced salinity tide-swept infralittoral rock same
MNCR BioMar 97.06 (Britain & Ireland) SIR.EstFa.MytT Mytilus edulis beds on reduced salinity tide-swept infralittoral rock same
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