|Basic Information||Biotope classification||Ecology||Habitat preferences and distribution||Species composition||Sensitivity||Importance|
Image Sue Scott - Circalittoral cliff face with dense brachiopods Neocrania anomala and Terebratulina retusa, the anemone Protanthea simplex and the ascidian Ciona intestinalis. Loch Duich, Highland. Image width ca 1 m.
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CR.SCR.BrAs.NeoPro recorded () and expected () distribution in Britain and Ireland (see below)
To assess the sensitivity of the biotope, the sensitivity of component species is reviewed. Those species that are considered to be particularly indicative of the sensitivity of the biotope, and for which research has been undertaken in detail are shown below (see selection criteria). The biology of other component species of the biotope is also taken into account wherever information is known to the researcher.
|Community Importance||Species name||Common Name|
|Important characterizing||Neocrania anomala||A brachiopod|
|Important characterizing||Protanthea simplex||Sealoch anemone|
|Important characterizing||Ciona intestinalis||A sea squirt|
There are no species in this biotope that can be classified as 'key', i.e. species that if lost would result in loss or degradation of the associated community. Three important characterizing species have been selected that are important for the classification of this biotope. The biotope name includes Neocrania anomala and Protanthea simplex so these have been included. The parent biotope complex is 'Brachiopod and solitary ascidian communities (sheltered rock)' Ciona intestinalis has been included as a representative solitary ascidian that is found with high frequency in the biotope. The very large solitary ascidian Ascidia mentula was also recorded in more than half the of the records of this biotope although less information was available on this species with which to assess sensitivity.
The biotope assessment also covers two sub-biotopes. Ciona intestinalis is not one of the characterizing species in SCR.NeoPro.CaTw. However, Ciona intestinalis is assumed to form a suitable surrogate, representing the sensitivity of the various other solitary ascidians in the sub-biotope.
This review can be cited as follows:
Jackson, A. 2005. Neocrania anomala and Protanthea simplex on very sheltered circalittoral rock. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 07/10/2015]. Available from: <http://www.marlin.ac.uk/habitatreproduction.php?habitatid=5&code=1997>