|Basic Information||Biotope classification||Ecology||Habitat preferences and distribution||Species composition||Sensitivity||Importance|
Image Roger Covey - Piddocks with a sparse associated fauna in upward-facing circalittoral very soft chalk or clay. Image width ca 30 cm.
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CR.MCR.SfR.Pid recorded () and expected () distribution in Britain and Ireland (see below)
|Distribution of biotope in Britain and Ireland||Recorded in south-east England (Sussex and Thanet) and from Galway Bay, Ireland. Recently recorded off Mumbles Head in Swansea Bay (Jon Moore, pers comm.)|
For a full description of this biotope including characterizing species, distribution, survey information and references visit JNCC
Horizontal plains of soft chalk and firm clay bored by bivalves. Species vary with location but Pholas dactylus, Barnea candida and Zirfaea crispata are recorded regularly. Found mainly in south-east England (Sussex and Thanet) although some Irish records exist. Other species present include Polydora ciliata and Crepidula fornicata. The rock surface is very friable or erodes very quickly and is, therefore, unsuitable for larger epifaunal species to settle and attach. (Information taken from the Marine Biotope Classification for Britain and Ireland, Version 97.06: Connor et al., 1997a, b).
This review can be cited as follows:
Hill, J.M. 2008. Piddocks with a sparse associated fauna in upward-facing circalittoral very soft chalk or clay. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 01/09/2014]. Available from: <http://www.marlin.ac.uk/habitatsbasicinfo.php?habitatid=152&code=2004>