Venerid bivalves and Branchiostoma lanceolatum in circalittoral coarse sand with shell gravel
|Within Vocab||Marine Habitat Classification for Britain and Ireland Version 97.06|
|Definition||Gravel and coarse sand with shell gravel often contains communities of robust venerupid bivalves (CGS.Ven). Shallower examples, such as the biotope presented here, may support a significant population of Branchiostoma lanceolatum. Other conspicuous infauna are Clausinella (Venus) fasciata, Spatangus purpureus, Echinocyamus pusillus, Glycymeris glycymeris, Nucula hanleyi, Spisula elliptica, Arcopagia crassa (especially in the south of UK), Laevicardium crassum, Ampelisca spinipes and Psammechinus miliaris. Sessile epifauna are typically a minor component of this community. Also present are: Ensis arcuatus, Asterias rubens and Ophiura albida. This biotope is related to the 'Boreal Offshore Gravel Association' and 'Deep Venus Community' described by other workers (Ford 1923; Jones 1951), and may also be closely allied (the same?) as the 'Venus fasciata' community of Cabioch (Glémarec 1973). Deeper examples of this biotope give way to other CGS.Ven types.|
|Has Current Version||1|
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