Zostera marina/angustifolia beds in lower shore or infralittoral clean or muddy sand
|Within Vocab||Marine Habitat Classification for Britain and Ireland Version 97.06|
|Definition||Expanses of clean or muddy fine sand in shallow water and on the lower shore (typically to about 5 m depth) can have dense stands of Zostera marina/angustifolia [Note: the taxonomic status of Z. angustifolia is currently under consideration]. In IMS.Zmar the community composition may be dominated by these Zostera species and therefore characterised by the associated biota. Other biota present can be closely related to that of areas of sediment not containing Zostera marina, for example, Laminaria saccharina, Chorda filum and infaunal species such as Ensis spp. and Echinocardium cordatum (e.g. Bamber 1993) and other bivalves listed below. It should be noted that sparse beds of Zostera marina may be more readily characterised by their infaunal community. Beds of this biotope in the south-west of Britain may contain conspicuous and distinctive assemblages of Lusitanian fauna such as Laomedea angulata, Hippocampus spp. and Stauromedusae. Some examples of Zostera marina beds have markedly anoxic sediments associated with them.|
|Has Current Version||1|
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