Concept
Brissopsis lyrifera and Amphiura chiajei in circalittoral mud
| URI | http://vocab.nerc.ac.uk/collection/M24/current/SSCMUBRIACHI/1/ | |
|---|---|---|
| Within Vocab | Marine Habitat Classification for Britain and Ireland Version 97.06 | |
| Alternative Labels | SS.CMU.BriAchi | |
| Definition | Mud in deep offshore, or shallower stable nearshore, waters can be characterised by the urchin Brissopsis lyrifera and the brittle star Amphiura chiajei. This community is very similar to CMS.AbrNucCor and CMS.AfilEcor but tends to occur in deeper and siltier muds. Transitional communities between the two may contain large numbers of Turritella. In certain areas of the UK such as the northern Irish Sea, this community may also contain Nephrops norvegicus and can consequently be the focus for fishing activity (Mackie, Oliver & Rees 1995). Where intense benthic dredge fishing activity occurs populations of the indicator species, Brissopsis lyrifera may be depressed, although broken tests may still remain (E.I.S. Rees, M. Costello pers. comm. 1997). This community is the 'Boreal Offshore Mud Association' and 'Brissopsis - Chiajei' communities described by other workers (Petersen 1918; Jones 1950). | |
| Date | 2019-11-26T11:41:44 | |
| Identifier | SDN:M24::SSCMUBRIACHI | |
| Note | accepted | |
| Is Version Of | SSCMUBRIACHI | |
| version | 1 | |
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