Biodiversity & Conservation

Molgula manhattensis and Polycarpa spp. with erect sponges on tide-swept moderately exposed circalittoral rock

CR.HCR.XFa.Mol


MCR.MolPol

Image Keith Hiscock - Molgula manhattensis dominated seabed, middle channel with associated common starfish Asterias rubens. Image width ca 50 cm.
Image copyright information

Distribution map

CR.HCR.XFa.Mol recorded (dark blue bullet) and expected (light blue bullet) distribution in Britain and Ireland (see below)


  • EC_Habitats

For a list of 2004 characterising species please see the JNCC website.

Map icon UK and Ireland classification

Major habitat CR Circalittoral rock (and other hard substrata)
Habitat complex CR.HCR High energy circalittoral rock
Biotope complex CR.HCR.XFa Mixed faunal turf communities
Biotope CR.HCR.XFa.Mol Molgula manhattensis with a hydroid and bryozoan turf on tide-swept moderately wave-exposed circalittoral rock

Additional information icon Additional information

The MCR.MolPol (and MCR.Mus - Musculus discors) biotopes appear to occur when the MCR.ErSPbolSH (Cushion sponges, branching sponges, Nemertesia spp. and Pentapora foliacea) biotope is colonized by dense carpets of solitary aggregated ascidians (or Musculus discors). European Union Nature Information System (EUNIS) Habitat classification code: A3.672 - Molgula manhattensis and Polycarpa spp. with erect sponges on tide-swept moderately exposed circalittoral rock (Davies & Moss, 1998).

This review can be cited as follows:

Hiscock, K. 2002. Molgula manhattensis and Polycarpa spp. with erect sponges on tide-swept moderately exposed circalittoral rock. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 29/07/2014]. Available from: <http://www.marlin.ac.uk/habitatclassification.php?habitatid=305&code=2004>