Verrucaria maura and sparse barnacles on exposed littoral fringe rock
|Within Vocab||Marine Habitat Classification for Britain and Ireland Version 97.06|
|Definition||Exposed rock in the littoral fringe with a sparse covering of barnacles over the black lichen Verrucaria maura. On south-west and western shores the barnacle is usually Chthamalus montagui which may extend over the whole of the zone. On north and east coast shores the barnacle is usually Semibalanus balanoides, and is usually restricted to the lower littoral fringe, with a band of V. maura only in the upper littoral fringe. Littorinid molluscs are usually present; Pelvetia canaliculata may be present, becoming increasingly more common with greater shelter (see PelB). Ver.B occurs on vertical faces of more sheltered shores with Pelvetia (PelB). Ver.B is usually found above Mytilus edulis and barnacles (MytB) or the Barnacle and Patella zone (BPat, BPat.Cht or BPat.Sem), both of which have much denser coverings of barnacles.|
|Has Current Version||1|
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