Amphiura filiformis and Echinocardium cordatum in circalittoral clean or slightly muddy sand
|Within Vocab||Marine Habitat Classification for Britain and Ireland Version 97.06|
|Definition||Medium to fine clean / muddy (clayey) sand off shallow wave- exposed coasts can be characterised by Amphiura filiformis and Echinocardium cordatum. This community occurs in muddy sands and deeper water (Hiscock 1984; Picton et al. 1994) and may be related to the 'off-shore muddy sand association' described by other workers (Jones 1951; Mackie 1990). This community is also characterised by Pholoe sp., Nephtys hombergii, Nucula nitidosa, Callianassa subterranea and Eudorella truncatula (e.g. Künitzer et al. 1992). Virgularia mirabilis, Cerianthus lloydii and Chaetopterus variopedatus may be other conspicuous surface features but they do not occur in high numbers in this biotope. Deeper, more muddy sediments may give rise to CMS.AbrNucCor. In areas subject to benthic fisheries disturbance, Arctica islandica (if present) may show scars on their shells (Klein & Witbaard 1993).|
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