Biodiversity & Conservation

Mytilus edulis beds on variable salinity infralittoral mixed sediment

SS.IMX.EstMx.MytV


<i>%Mytilus edulis%</i> beds on variable salinity infralittoral mixed sediment
Distribution map

SS.IMX.EstMx.MytV recorded (dark blue bullet) and expected (light blue bullet) distribution in Britain and Ireland (see below)


  • EC_Habitats
  • UK_BAP

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 Minor decline Moderate
Decrease in suspended sediment Low Immediate Not sensitive No change Low
Desiccation Low Immediate Not sensitive Minor decline Low
Increase in emergence regime Intermediate High Low Minor decline Low
Decrease in emergence regime Tolerant* Not relevant Not sensitive* No change Low
Increase in water flow rate High High Moderate Decline Low
Decrease in water flow rate Low Very high Very low No change Low
Increase in temperature Low Very high Very low Minor decline Low
Decrease in temperature Low Very high Very low No change Low
Increase in turbidity Tolerant Not relevant Not sensitive No change Low
Decrease in turbidity Tolerant Not relevant Not sensitive No change Low
Increase in wave exposure High High Moderate Major decline Moderate
Decrease in wave exposure Low Very high Very low Rise 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 Moderate
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 Moderate
Heavy metal contamination Intermediate High Low Decline Moderate
Hydrocarbon contamination High High Moderate Major decline Moderate
Radionuclide contamination Insufficient information Not relevant Insufficient information Insufficient Information Not relevant
Changes in nutrient levels Tolerant* Not relevant Not sensitive* Minor decline Low
Increase in salinity Tolerant* Not relevant Not sensitive* Rise Low
Decrease in salinity Intermediate High Low Decline Low
Changes in oxygenation Intermediate High Low Decline Low

Biological Factors

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

Species used to indicate biotope intolerance

Physical factors

Mytilus edulis
Key structural
Asterias rubens
Important functional
Nucella lapillus
Important functional
Substratum LossHighHighHigh
SmotheringIntermediateLowLow
Increase in suspended sedimentLowLowLow
Decrease in suspended sedimentLowTolerant
DesiccationLowHighIntermediate
Increase in emergence regimeLowTolerantIntermediate
Decrease in emergence regimeLowTolerant
Increase in water flow rateLowIntermediateLow
Decrease in water flow rateLowTolerant
Increase in temperatureLowHighIntermediate
Decrease in temperatureLowLowLow
Increase in turbidityTolerantLowTolerant
Decrease in turbidityTolerantTolerant
Increase in wave exposureIntermediateIntermediateIntermediate
Decrease in wave exposureIntermediateLowIntermediate
NoiseTolerant*TolerantTolerant
Visual PresenceTolerant*TolerantTolerant
Abrasion & physical disturbanceIntermediateIntermediateLow
DisplacementIntermediateLowIntermediate

Chemical factors

Mytilus edulis
Key structural
Asterias rubens
Important functional
Nucella lapillus
Important functional
Synthetic compound contaminationIntermediateIntermediateHigh
Heavy metal contaminationIntermediateIntermediateLow
Hydrocarbon contaminationIntermediateHighIntermediate
Radionuclide contaminationInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsIntermediateLowHigh
Increase in salinityLowHighLow
Decrease in salinityLowIntermediate
Changes in oxygenationLowHighIntermediate

Biological factors

Mytilus edulis
Key structural
Asterias rubens
Important functional
Nucella lapillus
Important functional
Introduction of microbial pathogens/parasitesIntermediateIntermediateIntermediate
Introduction of non-native speciesInsufficient informationInsufficient informationInsufficient information
Extraction of this speciesIntermediateNot relevantNot relevant
Extraction of other speciesLowLowLow

Species used to indicate biotope recoverability

Physical factors

Mytilus edulis
Key structural
Asterias rubens
Important functional
Nucella lapillus
Important functional
Substratum LossHighHighLow
SmotheringHighVery highImmediate
Increase in suspended sedimentImmediateHighImmediate
Decrease in suspended sedimentImmediateNot relevant
DesiccationImmediateHighHigh
Increase in emergence regimeVery highNot relevantHigh
Decrease in emergence regimeVery highNot relevant
Increase in water flow rateVery highHighVery high
Decrease in water flow rateVery highNot relevant
Increase in temperatureVery highHighHigh
Decrease in temperatureVery highHighVery high
Increase in turbidityNot relevantVery highNot relevant
Decrease in turbidityNot relevantNot relevant
Increase in wave exposureHighHighHigh
Decrease in wave exposureHighHighHigh
NoiseNot relevantNot relevantNot relevant
Visual PresenceNot relevantNot relevantNot relevant
Abrasion & physical disturbanceHighHighImmediate
DisplacementHighImmediateHigh

Chemical factors

Mytilus edulis
Key structural
Asterias rubens
Important functional
Nucella lapillus
Important functional
Synthetic compound contaminationHighHighLow
Heavy metal contaminationHighHighVery high
Hydrocarbon contaminationHighHighHigh
Radionuclide contaminationNot relevantInsufficient informationInsufficient information
Changes in nutrient levelsHighHighLow
Increase in salinityVery highHighVery high
Decrease in salinityVery highHigh
Changes in oxygenationVery highHighHigh

Biological factors

Mytilus edulis
Key structural
Asterias rubens
Important functional
Nucella lapillus
Important functional
Introduction of microbial pathogens/parasitesHighHighHigh
Introduction of non-native speciesNot relevantInsufficient informationNot relevant
Extraction of this speciesHighNot relevantNot relevant
Extraction of other speciesVery highHighVery high

This review can be cited as follows:

2001. Mytilus edulis beds on variable salinity infralittoral mixed sediment. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 30/07/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=36&code=1997>