Biodiversity & Conservation

Ophiothrix fragilis and/or Ophiocomina nigra beds on slightly tide-swept circalittoral rock or mixed substrata

CR.MCR.EcCr.CarSp.Bri


MCR.Oph

Image Bernard Picton - Ophiothrix fragilis and/or Ophiocomina nigra beds on slightly tide-swept circalittoral rock or mixed substrata. Image width ca 1 m.
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Distribution map

CR.MCR.EcCr.CarSp.Bri 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 No change Moderate
Decrease in suspended sediment Low Very high Very low No change Moderate
Desiccation Not relevant Not relevant Not relevant Not relevant High
Increase in emergence regime Not relevant Not relevant Not relevant Not relevant High
Decrease in emergence regime Not relevant Not relevant Not relevant Not relevant High
Increase in water flow rate High High Moderate Decline Moderate
Decrease in water flow rate Intermediate High Low Minor decline Moderate
Increase in temperature Low High Low No change Low
Decrease in temperature Low High Low No change Low
Increase in turbidity Low Very high Very low No change Moderate
Decrease in turbidity Tolerant* Not relevant Not sensitive* No change Moderate
Increase in wave exposure High High Moderate Decline Moderate
Decrease in wave exposure Low Very high Very low No change Moderate
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 Low Immediate Not sensitive Minor decline High

Chemical Factors

Click factor name to view rationale Intolerance Recoverability Sensitivity Species Richness Evidence / Confidence
Synthetic compound contamination Insufficient information Insufficient information Insufficient information Insufficient Information Not relevant
Heavy metal contamination Low High Low Insufficient Information Not relevant
Hydrocarbon contamination Low High Low Major decline Low
Radionuclide contamination Insufficient information Insufficient information Insufficient information Insufficient Information Not relevant
Changes in nutrient levels Low High Low Decline Moderate
Increase in salinity High High Moderate Major decline Low
Decrease in salinity High High Moderate 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 High Low Moderate
Introduction of non-native species Tolerant Not relevant Not sensitive Not relevant Moderate
Extraction of this species Intermediate High Low Decline Moderate
Extraction of other species Tolerant* Very high Not sensitive* No change Moderate

Species used to indicate biotope intolerance

Physical factors

Ophiothrix fragilis
Key structural
Asterias rubens
Important functional
Alcyonium digitatum
Important characterizing
Urticina felina
Important characterizing
Substratum LossHighHighHighHigh
SmotheringHighLowIntermediateLow
Increase in suspended sedimentLowLowLowLow
Decrease in suspended sedimentTolerant*
DesiccationIntermediateHighNot relevantIntermediate
Increase in emergence regimeNot relevantTolerantNot relevantIntermediate
Decrease in emergence regimeTolerant*
Increase in water flow rateLowIntermediateTolerant*Tolerant
Decrease in water flow rateIntermediateIntermediate
Increase in temperatureIntermediateHighLowIntermediate
Decrease in temperatureLowLowIntermediate
Increase in turbidityLowLowLowTolerant
Decrease in turbidityTolerant
Increase in wave exposureLowIntermediateTolerantTolerant
Decrease in wave exposureLowIntermediateIntermediate
NoiseLowTolerantTolerantTolerant
Visual PresenceTolerantTolerantTolerantTolerant
Abrasion & physical disturbanceIntermediateIntermediateIntermediateIntermediate
DisplacementTolerantLowHighLow

Chemical factors

Ophiothrix fragilis
Key structural
Asterias rubens
Important functional
Alcyonium digitatum
Important characterizing
Urticina felina
Important characterizing
Synthetic compound contaminationInsufficient informationIntermediateIntermediateIntermediate
Heavy metal contaminationInsufficient informationIntermediateInsufficient informationInsufficient information
Hydrocarbon contaminationHighHighLowLow
Radionuclide contaminationInsufficient informationInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsIntermediateLowLowInsufficient information
Increase in salinityLowHighIntermediateNot relevant
Decrease in salinityLow
Changes in oxygenationHighHighHighIntermediate

Biological factors

Ophiothrix fragilis
Key structural
Asterias rubens
Important functional
Alcyonium digitatum
Important characterizing
Urticina felina
Important characterizing
Introduction of microbial pathogens/parasitesLowIntermediateInsufficient informationInsufficient information
Introduction of non-native speciesTolerantInsufficient informationInsufficient informationInsufficient information
Extraction of this speciesNot relevantNot relevantNot relevantHigh
Extraction of other speciesTolerantLowIntermediateTolerant

Species used to indicate biotope recoverability

Physical factors

Ophiothrix fragilis
Key structural
Asterias rubens
Important functional
Alcyonium digitatum
Important characterizing
Urticina felina
Important characterizing
Substratum LossHighHighHighModerate
SmotheringHighVery highHighVery high
Increase in suspended sedimentVery highHighVery highVery high
Decrease in suspended sedimentNot relevant
DesiccationHighHighNot relevantModerate
Increase in emergence regimeNot relevantNot relevantNot relevantModerate
Decrease in emergence regimeNot relevant
Increase in water flow rateVery highHighNot relevantNot relevant
Decrease in water flow rateHighModerate
Increase in temperatureHighHighHighHigh
Decrease in temperatureHighHighHigh
Increase in turbidityVery highVery highVery highNot relevant
Decrease in turbidityNot relevant
Increase in wave exposureVery highHighNot relevantNot relevant
Decrease in wave exposureHighHighHigh
NoiseVery highNot relevantNot relevantNot relevant
Visual PresenceNot relevantNot relevantNot relevantNot relevant
Abrasion & physical disturbanceHighHighHighModerate
DisplacementNot relevantImmediateHighImmediate

Chemical factors

Ophiothrix fragilis
Key structural
Asterias rubens
Important functional
Alcyonium digitatum
Important characterizing
Urticina felina
Important characterizing
Synthetic compound contaminationNot relevantHighHighModerate
Heavy metal contaminationNot relevantHighInsufficient informationInsufficient information
Hydrocarbon contaminationHighHighHighVery high
Radionuclide contaminationNot relevantInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsHighHighHighInsufficient information
Increase in salinityHighHighHighNot relevant
Decrease in salinityVery high
Changes in oxygenationHighHighHighHigh

Biological factors

Ophiothrix fragilis
Key structural
Asterias rubens
Important functional
Alcyonium digitatum
Important characterizing
Urticina felina
Important characterizing
Introduction of microbial pathogens/parasitesHighHighInsufficient informationInsufficient information
Introduction of non-native speciesNot relevantInsufficient informationInsufficient informationInsufficient information
Extraction of this speciesNot relevantNot relevantNot relevantModerate
Extraction of other speciesNot relevantHighHighNot relevant

This review can be cited as follows:

Hill, J.M. 2001. Ophiothrix fragilis and/or Ophiocomina nigra beds on slightly tide-swept circalittoral rock or mixed substrata. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 20/08/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=278&code=2004>