Biodiversity & Conservation

Mytilus edulis and Fucus vesiculosus on moderately exposed mid eulittoral rock

LR.MLR.MusF.MytFves


MLR.MytFves

Image David Connor - Mytilus and fucoids. Image width ca 80 cm.
Image copyright information

Distribution map

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

Chemical Factors

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

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 Insufficient information Not relevant Insufficient information Insufficient Information Not relevant
Extraction of this species Intermediate High Low Decline Low
Extraction of other species Tolerant Not relevant Not sensitive No change Low

Species used to indicate biotope intolerance

Physical factors

Mytilus edulis
Key structural
Fucus vesiculosus
Important structural
Patella vulgata
Important functional
Littorina littorea
Important functional
Nucella lapillus
Important functional
Substratum LossHighIntermediateHighHighHigh
SmotheringIntermediateHighHighHighLow
Increase in suspended sedimentLowLowLowIntermediateLow
Decrease in suspended sedimentLowLowTolerant
DesiccationLowIntermediateLowLowIntermediate
Increase in emergence regimeLowIntermediateLowLowIntermediate
Decrease in emergence regimeLowTolerant
Increase in water flow rateLowIntermediateLowIntermediateLow
Decrease in water flow rateLowTolerant
Increase in temperatureLowTolerantLowLowIntermediate
Decrease in temperatureLowLow
Increase in turbidityTolerantLowLowLowTolerant
Decrease in turbidityTolerantTolerant
Increase in wave exposureIntermediateIntermediateLowIntermediateIntermediate
Decrease in wave exposureIntermediateIntermediate
NoiseTolerant*TolerantLowTolerantTolerant
Visual PresenceTolerant*TolerantTolerantTolerantTolerant
Abrasion & physical disturbanceIntermediateIntermediateLowIntermediateLow
DisplacementIntermediateHighIntermediateTolerantIntermediate

Chemical factors

Mytilus edulis
Key structural
Fucus vesiculosus
Important structural
Patella vulgata
Important functional
Littorina littorea
Important functional
Nucella lapillus
Important functional
Synthetic compound contaminationIntermediateIntermediateHighLowHigh
Heavy metal contaminationIntermediateLowIntermediateIntermediateLow
Hydrocarbon contaminationIntermediateLowHighHighIntermediate
Radionuclide contaminationInsufficient informationInsufficient informationInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsIntermediateIntermediateLowTolerantHigh
Increase in salinityLowLowLowTolerantLow
Decrease in salinityLowIntermediate
Changes in oxygenationLowInsufficient informationIntermediateLowIntermediate

Biological factors

Mytilus edulis
Key structural
Fucus vesiculosus
Important structural
Patella vulgata
Important functional
Littorina littorea
Important functional
Nucella lapillus
Important functional
Introduction of microbial pathogens/parasitesIntermediateInsufficient informationInsufficient informationInsufficient informationIntermediate
Introduction of non-native speciesInsufficient informationInsufficient informationNot relevantInsufficient informationInsufficient information
Extraction of this speciesIntermediateIntermediateIntermediateIntermediateNot relevant
Extraction of other speciesLowInsufficient informationLowTolerantLow

Species used to indicate biotope recoverability

Physical factors

Mytilus edulis
Key structural
Fucus vesiculosus
Important structural
Patella vulgata
Important functional
Littorina littorea
Important functional
Nucella lapillus
Important functional
Substratum LossHighHighHighHighLow
SmotheringHighHighHighHighImmediate
Increase in suspended sedimentImmediateImmediateHighHighImmediate
Decrease in suspended sedimentImmediateHighNot relevant
DesiccationImmediateHighHighImmediateHigh
Increase in emergence regimeVery highHighHighImmediateHigh
Decrease in emergence regimeVery highNot relevant
Increase in water flow rateVery highHighHighHighVery high
Decrease in water flow rateVery highNot relevant
Increase in temperatureVery highNot relevantHighImmediateHigh
Decrease in temperatureVery highVery high
Increase in turbidityNot relevantImmediateVery highVery highNot relevant
Decrease in turbidityNot relevantNot relevant
Increase in wave exposureHighHighHighHighHigh
Decrease in wave exposureHighHigh
NoiseNot relevantNot relevantHighNot relevantNot relevant
Visual PresenceNot relevantNot relevantNot relevantNot relevantNot relevant
Abrasion & physical disturbanceHighHighVery highHighImmediate
DisplacementHighHighHighNot relevantHigh

Chemical factors

Mytilus edulis
Key structural
Fucus vesiculosus
Important structural
Patella vulgata
Important functional
Littorina littorea
Important functional
Nucella lapillus
Important functional
Synthetic compound contaminationHighHighHighVery highLow
Heavy metal contaminationHighHighHighHighVery high
Hydrocarbon contaminationHighHighHighHighHigh
Radionuclide contaminationNot relevantNot relevantInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsHighHighHighNot relevantLow
Increase in salinityVery highHighHighNot relevantVery high
Decrease in salinityVery highHigh
Changes in oxygenationVery highNot relevantHighVery highHigh

Biological factors

Mytilus edulis
Key structural
Fucus vesiculosus
Important structural
Patella vulgata
Important functional
Littorina littorea
Important functional
Nucella lapillus
Important functional
Introduction of microbial pathogens/parasitesHighNot relevantInsufficient informationInsufficient informationHigh
Introduction of non-native speciesNot relevantNot relevantNot relevantInsufficient informationNot relevant
Extraction of this speciesHighHighHighHighNot relevant
Extraction of other speciesVery highNot relevantHighNot relevantVery high

This review can be cited as follows:

Tyler-Walters, H. 2002. Mytilus edulis and Fucus vesiculosus on moderately exposed mid eulittoral rock. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 23/09/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=46&code=2004>