Foliose red seaweeds with dense Dictyota dichotoma and/or Dictyopteris membranacea on exposed lower infralittoral rock
|Within Vocab||Marine Habitat Classification for Britain and Ireland Version 97.06|
|Definition||A dense turf of foliose red seaweeds (including Delesseria sanguinea, Plocamium cartilagineum and Callophyllis laciniata) mixed with a dense turf of the brown seaweeds Dictyota dichotoma and / or Dictyopteris membranacea on exposed and moderately exposed lower infralittoral rock, generally at or below the lower limit of the kelp zone. In some areas the lower infralittoral may be subject to a moderate amount of scour from nearby sand. Dictyota is relatively tolerant of such scour and in such areas a zone may form with other tolerant seaweeds, such as Schottera nicaeensis and Desmarestia spp. Dictyopteris is confined to south-western coasts. Dictyota also occurs in the kelp park, and records should only be assigned to this biotope where kelp is sparse or absent (less than occasional) and a relatively high density of Dictyota and / or Dictyopteris (generally greater than common) is present.|
|Has Current Version||1|
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