Pelvetia canaliculata and barnacles on moderately exposed littoral fringe rock
|Within Vocab||Marine Habitat Classification for Britain and Ireland Version 97.06|
|Definition||Moderately exposed, or sheltered steep, lower littoral fringe rock characterised by the upper shore fucoid Pelvetia canaliculata and barnacles (moderately exposed southern and western shores are typically characterised by Chthamalus spp., with Semibalanus balanoides on northern and eastern shores). The Pelvetia typically overgrows a crust of the black lichens Verrucaria maura and Verrucaria mucosa, in contrast to Hildenbrandia rubra on very sheltered shores (see Pel). This biotope differs from the sheltered shore Pelvetia biotope (Pel) by the presence of some typically exposed-shore species; these include the grazing molluscs Littorina neritoides and L. neglecta and the black lichen Lichina pygmaea. However, the striking difference exists in the greater number of barnacles by comparison to the sheltered shores.|
|Has Current Version||1|
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