|Basic Information||Biotope classification||Ecology||Habitat preferences and distribution||Species composition||Sensitivity||Importance|
Image Keith Hiscock - Amphiura filiformis arms visible in circalittoral muddy sand. Image width ca 30 cm
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SS.CMS._.AfilEcor recorded () and expected () distribution in Britain and Ireland (see below)
To assess the sensitivity of the biotope, the sensitivity of component species is reviewed. Those species that are considered to be particularly indicative of the sensitivity of the biotope, and for which research has been undertaken in detail are shown below (see selection criteria). The biology of other component species of the biotope is also taken into account wherever information is known to the researcher.
|Community Importance||Species name||Common Name|
|Important characterizing||Amphiura filiformis||A brittlestar|
|Key functional||Echinocardium cordatum||Sea potato|
|Important structural||Callianassa subterranea||A burrowing mud shrimp|
The sensitivity of the biotope is based on the sensitivity of the key species after which the biotope is named, Amphiura filiformis and Echinocardium cordatum. The burrowing mud-shrimp Callianassa subterranea is also an important species within the biotope because its burrowing activities can alter the nature of the sediment through bioturbation and burrows allow a much larger surface area of sediment to become oxygenated, and thus enhance the survival of a considerable variety of small species (Pearson & Rosenberg, 1978).
This review can be cited as follows:
Hill, J.M. 2004. Amphiura filiformis and Echinocardium cordatum in circalittoral clean or slightly muddy sand. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 20/05/2013]. Available from: <http://www.marlin.ac.uk/habitatreproduction.php?habitatid=368&code=1997>