|Basic Information||Biotope classification||Ecology||Habitat preferences and distribution||Species composition||Sensitivity||Importance|
Image Rohan Holt - Halidrys on flat pebbles and gravel. Image width ca 1 m.
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IR.MIR.SedK.HalXK recorded () and expected () distribution in Britain and Ireland (see below)
EC Habitats Directive
|National importance||Not available|
|Habitat Directive feature (Annex 1)||Reefs
Large shallow inlets and bays
The interstices between understorey macroalgae may act as shelter or refuge for larvae and juveniles of the organisms found in the community (Birkett et al., 1998). Laboratory evidence (Johns & Mann, 1987) suggested that Irish moss (Chondrus crispus) and habitat complexity attract juvenile lobster, presumably as a refuge from predation. However, Vadas & Elner (1992) suggested that field evidence for large invertebrates or fish using macroalgal habitats as refuges or nurseries was conjectural. Nesting fish, such as corkwing wrasse (Crenilabrus melops) construct nests of seaweeds in crevices and between rocks, and may therefore, use the biotope for nesting purposes, although no evidence was found to this effect.
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This review can be cited as follows:
Tyler-Walters, H. 2002. Halidrys siliquosa and mixed kelps on tide-swept infralittoral rock with coarse sediment.. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 30/03/2015]. Available from: <http://www.marlin.ac.uk/habitatimportance.php?habitatid=258&code=1997>