|Basic Information||Biotope classification||Ecology||Habitat preferences and distribution||Species composition||Sensitivity||Importance|
SS.SSa.CMuSa.AalbNuc recorded () and expected () distribution in Britain and Ireland (see below)
For a list of 2004 characterising species please see the JNCC website.
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||Abra alba||A bivalve mollusc|
|Important characterizing||Nucula nitidosa||A bivalve|
|Important characterizing||Corbula gibba||Basket shell|
|Important characterizing||Nephtys hombergii||A catworm|
|Important characterizing||Lagis koreni||A bristleworm|
|Important other||Echinocardium cordatum||Sea potato|
The small bivalves, Abra alba, Nucula nitidosa and Corbula gibba and infaunal polychaetes Lagis koreni and Nephtys hombergii are considered to be important characterizing species as, in their absence, the biotope would not be recognized. These species live within the sediment and their combined burrowing/feeding activities serve to generate a complex and shifting 'mosaic' of habitat patches in an otherwise homogenous sediment, which probably affects species diversity locally. However, no single species activity was identified as the dominant factor determining local biological structure. Although not especially abundant in the biotope, Echinocardium cordatum is a larger species whose burrowing also contributes to the localized habitat mosaic. It has been assessed as an important other species, whose presence may affect the sensitivity of the biotope.
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This review can be cited as follows:
Budd, G.C. 2006. Abra alba, Nucula nitida and Corbula gibba in circalittoral muddy sand or slightly mixed sediment. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 23/10/2014]. Available from: <http://www.marlin.ac.uk/habitatreproduction.php?habitatid=62&code=2004>