|Basic Information||Biotope classification||Ecology||Habitat preferences and distribution||Species composition||Sensitivity||Importance|
Image Keith Hiscock - A well developed overhang community with pendulous polyclinid tunicates. Image width ca 1 m.
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LR.FLR.CvOv recorded () and expected () distribution in Britain and Ireland (see below)
For a list of 2004 characterising species please see the JNCC website.
|Major habitat||LR||Littoral rock (and other hard substrata)|
|Habitat complex||LR.FLR||Features of littoral rock|
|Biotope complex||LR.FLR.CvOv||Littoral caves and overhangs|
LR.Ov.SR (Sponges and shade-tolerant red seaweeds on overhanging lower eulittoral bedrock) includes both encrusting and pendulous species and shade tolerant algae. It may be found from very sheltered to very exposed situations in full or variable salinity.LR.Ov.SByAs (Sponges, bryozoans and ascidians on deeply overhanging lower shore bedrock) includes predominantly encrusting species but with few or no algae. It may be found from very sheltered to moderately exposed conditions in full salinity.
A third biotope (£LR.RhoCv£: Rhodothamniella floridula in upper littoral fringe soft rock caves) has been assessed separately (see review).
This review can be cited as follows:
Hiscock, K. 2002. Overhangs and caves. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 12/12/2013]. Available from: <http://www.marlin.ac.uk/habitatclassification.php?habitatid=242&code=2004>