Biodiversity & Conservation

Polyides rotundus, Ahnfeltia plicata and Chondrus crispus on sand-covered infralittoral rock

IR.MIR.SedK.PolAhn


<i>%Polyides rotundus%</i>, <i>%Ahnfeltia plicata%</i> and <i>%Chondrus crispus%</i> on sand-covered infralittoral rock
Distribution map

IR.MIR.SedK.PolAhn recorded (dark blue bullet) and expected (light blue bullet) distribution in Britain and Ireland (see below)


  • EC_Habitats

Marine natural heritage importance

Listed under EC Habitats Directive
National importance Uncommon
Habitat Directive feature (Annex 1) Reefs
Large shallow inlets and bays

Biotope importance

The biotope probably does not support a large number of grazers as the climax algal species are sufficiently tough to be resistant to grazing. The turf may provide a refuge and source of food for fish species living in the shallow subtidal, particularly gobies and wrasse.

Exploitation

No evidence was found that the MIR.PolAhn biotope is exploited in Britain and Ireland.

Additional information icon Additional information

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This review can be cited as follows:

Rayment, W.J. 2002. Polyides rotundus, Ahnfeltia plicata and Chondrus crispus on sand-covered infralittoral rock. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 22/12/2014]. Available from: <http://www.marlin.ac.uk/habitatimportance.php?habitatid=222&code=1997>