Biodiversity & Conservation

Musculus discors beds on moderately exposed circalittoral rock

CR.MCR.M.Mus


<i>%Musculus discors% </i>beds on moderately exposed circalittoral rock
Distribution map

CR.MCR.M.Mus 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 Moderate Moderate Major decline Low
Smothering High Moderate Moderate Decline Low
Increase in suspended sediment Low High Low Minor decline Low
Decrease in suspended sediment Low High Low Minor decline Low
Desiccation Not relevant Not relevant Not relevant Not relevant Not relevant
Increase in emergence regime Not relevant Not relevant Not relevant Not relevant Not relevant
Decrease in emergence regime Not relevant Not relevant Not relevant Not relevant Not relevant
Increase in water flow rate Intermediate High Low Minor decline Low
Decrease in water flow rate Low High Low Minor decline Low
Increase in temperature Low High Low Minor decline Low
Decrease in temperature Low High Low Minor decline Low
Increase in turbidity Low High Low Minor decline Low
Decrease in turbidity Low Very high Very low Minor decline Low
Increase in wave exposure Intermediate High Low Decline Low
Decrease in wave exposure Low High Low Decline Low
Noise Tolerant Not relevant Not sensitive No change High
Visual Presence Tolerant Not relevant Not sensitive No change High
Abrasion & physical disturbance Intermediate High Low Decline Low
Displacement Intermediate High Low Decline Low

Chemical Factors

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

Biological Factors

Click factor name to view rationale Intolerance Recoverability Sensitivity Species Richness Evidence / Confidence
Introduction of microbial pathogens/parasites Low Very high Very low Very low
Introduction of non-native species Insufficient information Not relevant Insufficient information Insufficient Information Not relevant
Extraction of this species Intermediate High Low Minor decline Low
Extraction of other species Intermediate High Low Minor decline Low

Species used to indicate biotope intolerance

Physical factors

Musculus discors
Important characterizing
Substratum LossHigh
SmotheringHigh
Increase in suspended sedimentLow
Decrease in suspended sedimentLow
DesiccationIntermediate
Increase in emergence regimeIntermediate
Decrease in emergence regimeTolerant*
Increase in water flow rateIntermediate
Decrease in water flow rateLow
Increase in temperatureTolerant
Decrease in temperatureTolerant
Increase in turbidityLow
Decrease in turbidityTolerant*
Increase in wave exposureIntermediate
Decrease in wave exposureNot relevant
NoiseTolerant
Visual PresenceTolerant
Abrasion & physical disturbanceIntermediate
DisplacementLow

Chemical factors

Musculus discors
Important characterizing
Synthetic compound contaminationIntermediate
Heavy metal contaminationInsufficient information
Hydrocarbon contaminationLow
Radionuclide contaminationInsufficient information
Changes in nutrient levelsTolerant*
Increase in salinityNot relevant
Decrease in salinityIntermediate
Changes in oxygenationIntermediate

Biological factors

Musculus discors
Important characterizing
Introduction of microbial pathogens/parasitesLow
Introduction of non-native speciesInsufficient information
Extraction of this speciesNot relevant
Extraction of other speciesIntermediate

Species used to indicate biotope recoverability

Physical factors

Musculus discors
Important characterizing
Substratum LossModerate
SmotheringModerate
Increase in suspended sedimentImmediate
Decrease in suspended sedimentImmediate
DesiccationHigh
Increase in emergence regimeHigh
Decrease in emergence regimeNot relevant
Increase in water flow rateHigh
Decrease in water flow rateImmediate
Increase in temperatureNot relevant
Decrease in temperatureNot relevant
Increase in turbidityVery high
Decrease in turbidityNot relevant
Increase in wave exposureHigh
Decrease in wave exposureNot relevant
NoiseNot relevant
Visual PresenceNot relevant
Abrasion & physical disturbanceHigh
DisplacementVery high

Chemical factors

Musculus discors
Important characterizing
Synthetic compound contaminationHigh
Heavy metal contaminationNot relevant
Hydrocarbon contaminationVery high
Radionuclide contaminationNot relevant
Changes in nutrient levelsNot relevant
Increase in salinityNot relevant
Decrease in salinityHigh
Changes in oxygenationHigh

Biological factors

Musculus discors
Important characterizing
Introduction of microbial pathogens/parasitesVery high
Introduction of non-native speciesNot relevant
Extraction of this speciesNot relevant
Extraction of other speciesHigh

This review can be cited as follows:

Tyler-Walters, H. 2002. Musculus discors beds on 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 26/11/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=90&code=1997>