Pelvetia canaliculata on sheltered littoral fringe rock
|Marine Habitat Classification for Britain and Ireland Version 97.06
|Lower littoral fringe bedrock or stable boulders on sheltered shores are characterised by a dense cover of the fucoid Pelvetia canaliculata. The fucoid overgrows a crust of black lichens Verrucaria maura and Verrucaria mucosa, or Hildenbrandia rubra on very sheltered shores. This biotope lacks the density of barnacles found amongst the Pelvetia on more exposed shores (PelB). The littorinids Littorina littorea and L. saxatilis occur. The red alga Catenella caespitosa is characteristic of this biotope, as is the lichen Lichina confinis. Though not typical, this biotope may occur on moderately exposed shores where local topography provides shelter.
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