Concept
Macoma balthica and Arenicola marina in muddy sand shores
| URI | http://vocab.nerc.ac.uk/collection/M24/current/LSLMSMSMACARE/1/ | |
|---|---|---|
| Within Vocab | Marine Habitat Classification for Britain and Ireland Version 97.06 | |
| Alternative Labels | LS.LMS.MS.MacAre | |
| Definition | Muddy sand and fine sand flats on the mid and lower shore tend to occur on extensive moderately exposed shores and sheltered shores, on open coasts and in marine inlets. The sediment generally remains water-saturated during low water and the habitat may be subject to variable salinity conditions in marine inlets. The lugworm Arenicola marina and Scoloplos armiger are typically common along with the Baltic tellin Macoma balthica and cockle Cerastoderma edule. Amphipods such as the mud burrowing-amphipod Corophium volutator can be common, as well as polychaetes Pygospio elegans and Nephtys hombergii. The lugworm Arenicola marina, due to the variable recruitment success, may be absent, but Scoloplos armiger and other components of this biotope are still to be found. A black layer of anoxia is usually present within 5 cm of the sediment surface can be seen in the worm casts on the surface. The presence of Hediste (Nereis) diversicolor and oligochaetes usually indicates the more sheltered and muddy biotope LMU.HedMac.Are. The presence of Mya arenaria in abundance is described in LMS.MacAre.Mare. The biotope LMS.PCer is similar to this biotope, but is generally less muddy and has a higher frequency of amphipods such as Bathyporeia spp. and Cerastoderma edule. Arenicola marina may be dense (usually due to temporary recruitment) on more wave-exposed sandy shores with Nephtys cirrosa and Bathyporeia spp., LGS.AP.P. | |
| Date | 2019-11-26T11:41:44 | |
| Identifier | SDN:M24::LSLMSMSMACARE | |
| Note | accepted | |
| Is Version Of | LSLMSMSMACARE | |
| version | 1 | |
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