Biodiversity & Conservation

Mytilus edulis beds on reduced salinity tide-swept infralittoral rock

IR.SIR.EstFa.MytT


<i>%Mytilus edulis%</i> beds on reduced salinity tide-swept infralittoral rock
Distribution map

IR.SIR.EstFa.MytT 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 Moderate
Smothering Intermediate High Low Decline Moderate
Increase in suspended sediment Low Immediate Not sensitive No change Moderate
Decrease in suspended sediment Low Immediate Not sensitive No change Moderate
Desiccation Low Very high Very low Minor decline Moderate
Increase in emergence regime Low Very high Very low Minor decline Moderate
Decrease in emergence regime Not relevant Not relevant Not relevant Not relevant Not relevant
Increase in water flow rate Tolerant Not relevant Not sensitive Not relevant Moderate
Decrease in water flow rate High High Moderate Rise Moderate
Increase in temperature Low High Low Minor decline Moderate
Decrease in temperature Low Very high Very low Minor decline Moderate
Increase in turbidity Low Very high Very low Minor decline Moderate
Decrease in turbidity Low Very high Very low Rise Moderate
Increase in wave exposure Intermediate High Low Decline Low
Decrease in wave exposure Not relevant Not relevant Not relevant Not relevant Not relevant
Noise Tolerant* Not relevant Not sensitive* No change Moderate
Visual Presence Tolerant* Not relevant Not sensitive* No change Moderate
Abrasion & physical disturbance Intermediate High Low Decline Moderate
Displacement Intermediate High Low Minor decline Moderate

Chemical Factors

Click factor name to view rationale Intolerance Recoverability Sensitivity Species Richness Evidence / Confidence
Synthetic compound contamination Intermediate Very high Low No change Low
Heavy metal contamination Intermediate Very high Low No change Moderate
Hydrocarbon contamination Intermediate Very high Low Minor decline High
Radionuclide contamination Insufficient information Not relevant Insufficient information Insufficient Information Not relevant
Changes in nutrient levels Tolerant* Not relevant Not sensitive* No change Not relevant
Increase in salinity High High Moderate Rise Low
Decrease in salinity Intermediate High Low Minor decline Moderate
Changes in oxygenation Intermediate High Low Decline Moderate

Biological Factors

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

Species used to indicate biotope intolerance

Physical factors

Mytilus edulis
Key structural
Asterias rubens
Key structural
Balanus crenatus
Important functional
Substratum LossHighHighHigh
SmotheringIntermediateLowHigh
Increase in suspended sedimentLowLowLow
Decrease in suspended sedimentLow
DesiccationLowHighHigh
Increase in emergence regimeLowTolerantHigh
Decrease in emergence regimeLow
Increase in water flow rateLowIntermediateLow
Decrease in water flow rateLow
Increase in temperatureLowHighHigh
Decrease in temperatureLowLow
Increase in turbidityTolerantLowLow
Decrease in turbidityTolerant
Increase in wave exposureIntermediateIntermediateLow
Decrease in wave exposureIntermediateLow
NoiseTolerant*TolerantTolerant
Visual PresenceTolerant*TolerantTolerant
Abrasion & physical disturbanceIntermediateIntermediateIntermediate
DisplacementIntermediateLowHigh

Chemical factors

Mytilus edulis
Key structural
Asterias rubens
Key structural
Balanus crenatus
Important functional
Synthetic compound contaminationIntermediateIntermediateHigh
Heavy metal contaminationIntermediateIntermediateIntermediate
Hydrocarbon contaminationIntermediateHighLow
Radionuclide contaminationInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsIntermediateLowIntermediate
Increase in salinityLowHighLow
Decrease in salinityLow
Changes in oxygenationLowHighHigh

Biological factors

Mytilus edulis
Key structural
Asterias rubens
Key structural
Balanus crenatus
Important functional
Introduction of microbial pathogens/parasitesIntermediateIntermediateInsufficient information
Introduction of non-native speciesInsufficient informationInsufficient informationInsufficient information
Extraction of this speciesIntermediateNot relevantNot relevant
Extraction of other speciesLowLowNot relevant

Species used to indicate biotope recoverability

Physical factors

Mytilus edulis
Key structural
Asterias rubens
Key structural
Balanus crenatus
Important functional
Substratum LossHighHighHigh
SmotheringHighVery highHigh
Increase in suspended sedimentImmediateHighHigh
Decrease in suspended sedimentImmediate
DesiccationImmediateHighHigh
Increase in emergence regimeVery highNot relevantHigh
Decrease in emergence regimeVery high
Increase in water flow rateVery highHighVery high
Decrease in water flow rateVery high
Increase in temperatureVery highHighHigh
Decrease in temperatureVery highHigh
Increase in turbidityNot relevantVery highVery high
Decrease in turbidityNot relevant
Increase in wave exposureHighHighVery high
Decrease in wave exposureHighHigh
NoiseNot relevantNot relevantNot relevant
Visual PresenceNot relevantNot relevantNot relevant
Abrasion & physical disturbanceHighHighHigh
DisplacementHighImmediateHigh

Chemical factors

Mytilus edulis
Key structural
Asterias rubens
Key structural
Balanus crenatus
Important functional
Synthetic compound contaminationHighHighHigh
Heavy metal contaminationHighHighHigh
Hydrocarbon contaminationHighHighHigh
Radionuclide contaminationNot relevantInsufficient informationNot relevant
Changes in nutrient levelsHighHighHigh
Increase in salinityVery highHighVery high
Decrease in salinityVery high
Changes in oxygenationVery highHighHigh

Biological factors

Mytilus edulis
Key structural
Asterias rubens
Key structural
Balanus crenatus
Important functional
Introduction of microbial pathogens/parasitesHighHighNot relevant
Introduction of non-native speciesNot relevantInsufficient informationNot relevant
Extraction of this speciesHighNot relevantNot relevant
Extraction of other speciesVery highHighNot relevant

This review can be cited as follows:

Hiscock, K. 2001. Mytilus edulis beds on reduced salinity tide-swept infralittoral rock. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 31/10/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=259&code=1997>