Biodiversity & Conservation

Bugula spp. and other bryozoans on vertical moderately exposed circalittoral rock

CR.C.FaV.Bug


CR.Bug

Image Rohan Holt - Bugula spp. and other bryozoans on vertical moderately exposed circalittoral rock Image width ca XX m.
Image copyright information

Distribution map

CR.C.FaV.Bug 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 High High Moderate Decline Moderate
Increase in suspended sediment Low Very high Very low Minor decline Low
Decrease in suspended sediment Low Very high Very 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 Decline Low
Decrease in water flow rate High High Moderate Decline Low
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 Minor decline Low
Decrease in turbidity Intermediate High Low Minor decline Low
Increase in wave exposure Intermediate High Low Minor decline Low
Decrease in wave exposure High High Moderate Decline Low
Noise Tolerant Not relevant Not sensitive Not relevant Not relevant
Visual Presence Tolerant Not relevant Not sensitive Not relevant Low
Abrasion & physical disturbance Intermediate High Low Decline Moderate
Displacement High High Moderate Major decline Low

Chemical Factors

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

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 Low Very high Very low No change Low
Extraction of other species Intermediate High Low Minor decline Low

Species used to indicate biotope intolerance

Physical factors

Bugula turbinata
Important characterizing
Nemertesia ramosa
Important structural
Clavelina lepadiformis
Important structural
Morchellium argus
Important structural
Echinus esculentus
Important functional
Asterias rubens
Important functional
Substratum LossHighHighHighHighHighHigh
SmotheringHighIntermediateHighHighIntermediateLow
Increase in suspended sedimentIntermediateIntermediateIntermediateLowLowLow
Decrease in suspended sedimentTolerant*
DesiccationHighHighHighHighIntermediateHigh
Increase in emergence regimeIntermediateHighHighIntermediateLowTolerant
Decrease in emergence regimeTolerant*
Increase in water flow rateIntermediateIntermediateLowLowLowIntermediate
Decrease in water flow rateHigh
Increase in temperatureTolerantInsufficient informationIntermediateLowIntermediateHigh
Decrease in temperatureIntermediateIntermediateLow
Increase in turbidityLowTolerantTolerantLowLowLow
Decrease in turbidityTolerant
Increase in wave exposureIntermediateHighIntermediateLowLowIntermediate
Decrease in wave exposureTolerant*Low
NoiseTolerantTolerantTolerantTolerantTolerantTolerant
Visual PresenceTolerantTolerantTolerantTolerantLowTolerant
Abrasion & physical disturbanceIntermediateIntermediateHighIntermediateIntermediateIntermediate
DisplacementHighHighHighHighLowLow

Chemical factors

Bugula turbinata
Important characterizing
Nemertesia ramosa
Important structural
Clavelina lepadiformis
Important structural
Morchellium argus
Important structural
Echinus esculentus
Important functional
Asterias rubens
Important functional
Synthetic compound contaminationHighInsufficient informationInsufficient informationInsufficient informationHighIntermediate
Heavy metal contaminationLowInsufficient informationTolerantInsufficient informationHighIntermediate
Hydrocarbon contaminationHighInsufficient informationInsufficient informationInsufficient informationHighHigh
Radionuclide contaminationInsufficient informationInsufficient informationInsufficient informationInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsLowInsufficient informationInsufficient informationTolerantTolerant*Low
Increase in salinityNot relevantInsufficient informationLowIntermediateIntermediateHigh
Decrease in salinityIntermediate
Changes in oxygenationInsufficient informationInsufficient informationLowInsufficient informationIntermediateHigh

Biological factors

Bugula turbinata
Important characterizing
Nemertesia ramosa
Important structural
Clavelina lepadiformis
Important structural
Morchellium argus
Important structural
Echinus esculentus
Important functional
Asterias rubens
Important functional
Introduction of microbial pathogens/parasitesInsufficient informationInsufficient informationInsufficient informationInsufficient informationIntermediateIntermediate
Introduction of non-native speciesInsufficient informationInsufficient informationTolerantInsufficient informationNot relevantInsufficient information
Extraction of this speciesNot relevantNot relevantNot relevantIntermediateIntermediateNot relevant
Extraction of other speciesNot relevantTolerantTolerantIntermediateIntermediateLow

Species used to indicate biotope recoverability

Physical factors

Bugula turbinata
Important characterizing
Nemertesia ramosa
Important structural
Clavelina lepadiformis
Important structural
Morchellium argus
Important structural
Echinus esculentus
Important functional
Asterias rubens
Important functional
Substratum LossHighModerateModerateHighHighHigh
SmotheringHighVery highModerateHighHighVery high
Increase in suspended sedimentVery highImmediateHighHighVery highHigh
Decrease in suspended sedimentNot relevant
DesiccationHighModerateModerateHighHighHigh
Increase in emergence regimeVery highModerateModerateHighVery highNot relevant
Decrease in emergence regimeNot relevant
Increase in water flow rateVery highHighVery highHighVery highHigh
Decrease in water flow rateVery high
Increase in temperatureNot relevantInsufficient informationHighVery highHighHigh
Decrease in temperatureVery highHighHigh
Increase in turbidityImmediateNot relevantNot relevantHighVery highVery high
Decrease in turbidityNot relevant
Increase in wave exposureVery highModerateHighHighVery highHigh
Decrease in wave exposureNot relevantHigh
NoiseNot relevantNot relevantNot relevantNot relevantNot relevantNot relevant
Visual PresenceNot relevantNot relevantNot relevantNot relevantImmediateNot relevant
Abrasion & physical disturbanceVery highHighModerateHighHighHigh
DisplacementHighModerateModerateHighVery highImmediate

Chemical factors

Bugula turbinata
Important characterizing
Nemertesia ramosa
Important structural
Clavelina lepadiformis
Important structural
Morchellium argus
Important structural
Echinus esculentus
Important functional
Asterias rubens
Important functional
Synthetic compound contaminationHighInsufficient informationNot relevantNot relevantHighHigh
Heavy metal contaminationImmediateInsufficient informationNot relevantNot relevantHighHigh
Hydrocarbon contaminationHighInsufficient informationNot relevantNot relevantHighHigh
Radionuclide contaminationNot relevantInsufficient informationNot relevantNot relevantInsufficient informationInsufficient information
Changes in nutrient levelsImmediateInsufficient informationNot relevantNot relevantNot relevantHigh
Increase in salinityNot relevantInsufficient informationImmediateHighHighHigh
Decrease in salinityVery high
Changes in oxygenationNot relevantInsufficient informationImmediateNot relevantHighHigh

Biological factors

Bugula turbinata
Important characterizing
Nemertesia ramosa
Important structural
Clavelina lepadiformis
Important structural
Morchellium argus
Important structural
Echinus esculentus
Important functional
Asterias rubens
Important functional
Introduction of microbial pathogens/parasitesNot relevantInsufficient informationNot relevantNot relevantHighHigh
Introduction of non-native speciesNot relevantInsufficient informationNot relevantNot relevantNot relevantInsufficient information
Extraction of this speciesNot relevantNot relevantNot relevantHighHighNot relevant
Extraction of other speciesNot relevantNot relevantNot relevantHighHighHigh

This review can be cited as follows:

Tyler-Walters, H. 2002. Bugula spp. and other bryozoans on vertical 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 01/09/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=105&code=1997>