Biodiversity & Conservation

Venerid bivalves in circalittoral coarse sand or gravel

SS.SCS.CCS.MedLumVen


CGS.Ven

Image Anon. - Neopentadactyla mixta and venerid bivalves in circalittoral shell gravel or coarse sand. Image width ca XXm.
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Distribution map

SS.SCS.CCS.MedLumVen recorded (dark blue bullet) and expected (light blue bullet) distribution in Britain and Ireland (see below)


  • EC_Habitats

Habitat sensitivity

Physical Factors

Click factor name to view rationale Intolerance Recoverability Sensitivity Species Richness Evidence / Confidence
Substratum Loss High High Moderate Major decline High
Smothering Low Very high Very low Minor decline Low
Increase in suspended sediment Low Very high Very low No change Low
Decrease in suspended sediment Low Immediate Not sensitive No change Low
Desiccation Not relevant Not relevant Not relevant No change Not relevant
Increase in emergence regime Not relevant Not relevant Not relevant No change Not relevant
Decrease in emergence regime Not relevant Not relevant Not relevant No change Not relevant
Increase in water flow rate Intermediate High Low Decline Low
Decrease in water flow rate Intermediate High Low Minor decline Low
Increase in temperature Low Immediate Not sensitive No change Low
Decrease in temperature Intermediate High Low Minor decline Low
Increase in turbidity Low Very high Very low No change Low
Decrease in turbidity Tolerant Not relevant Not sensitive No change High
Increase in wave exposure Intermediate High Low Decline Low
Decrease in wave exposure Intermediate High Low Minor decline Low
Noise Tolerant Not relevant Not sensitive No change Low
Visual Presence Tolerant Not relevant Not sensitive No change Low
Abrasion & physical disturbance Intermediate High Low No change Moderate
Displacement Intermediate High Low Minor decline Low

Chemical Factors

Click factor name to view rationale Intolerance Recoverability Sensitivity Species Richness Evidence / Confidence
Synthetic compound contamination High High Moderate Decline Low
Heavy metal contamination High High Moderate Decline Moderate
Hydrocarbon contamination High High Moderate Decline Moderate
Radionuclide contamination Insufficient information Not relevant Insufficient information Insufficient Information Not relevant
Changes in nutrient levels Intermediate High Low Minor decline Low
Increase in salinity Not relevant Not relevant Not relevant Not relevant Not relevant
Decrease in salinity High High Moderate Major decline Low
Changes in oxygenation Low Very high Very low Minor decline Low

Biological Factors

Click factor name to view rationale Intolerance Recoverability Sensitivity Species Richness Evidence / Confidence
Introduction of microbial pathogens/parasites Intermediate High Low Moderate
Introduction of non-native species Tolerant Not relevant Not sensitive No change Low
Extraction of this species Intermediate High Low No change Not relevant
Extraction of other species Not relevant Not relevant Not relevant Not relevant Not relevant

This review can be cited as follows:

Rayment, W.J. 2001. Venerid bivalves in circalittoral coarse sand or gravel. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 02/09/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=63&code=2004>