Biodiversity & Conservation

Neocrania anomala and Protanthea simplex on very sheltered circalittoral rock

CR.LCR.BrAs.NeoPro


SCR.NeoPro

Image Sue Scott - Circalittoral cliff face with dense brachiopods Neocrania anomala and Terebratulina retusa, the anemone Protanthea simplex and the ascidian Ciona intestinalis. Loch Duich, Highland. Image width ca 1 m.
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Distribution map

CR.LCR.BrAs.NeoPro 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 Low
Smothering High Moderate Moderate Major decline Moderate
Increase in suspended sediment Low Very high Very low Minor decline Moderate
Decrease in suspended sediment
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
Increase in water flow rate High Moderate Moderate Major decline Low
Decrease in water flow rate
Increase in temperature High Moderate Moderate Major decline Low
Decrease in temperature
Increase in turbidity Tolerant Not relevant Not sensitive No change Low
Decrease in turbidity
Increase in wave exposure Not relevant Not relevant Not relevant Not relevant Moderate
Decrease in wave exposure
Noise Tolerant Not relevant Not sensitive No change High
Visual Presence Tolerant Not relevant Not sensitive No change High
Abrasion & physical disturbance High Moderate Moderate Major decline High
Displacement High Moderate Moderate Major 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 Insufficient information Insufficient information Insufficient information Insufficient Information Not relevant
Hydrocarbon contamination Insufficient information Insufficient information Insufficient information Insufficient Information Not relevant
Radionuclide contamination Insufficient information Insufficient information Insufficient information Insufficient Information Not relevant
Changes in nutrient levels Tolerant Not relevant Not sensitive No change Moderate
Increase in salinity Intermediate High Low Decline Low
Decrease in salinity
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 Insufficient information Insufficient information Insufficient information Not relevant Not relevant
Introduction of non-native species Insufficient information Insufficient information Insufficient information Insufficient Information Not relevant
Extraction of this species Not relevant Not relevant Not relevant Not relevant Low
Extraction of other species Not relevant Not relevant Not relevant Not relevant Low

Species used to indicate biotope intolerance

Physical factors

Neocrania anomala
Important characterizing
Protanthea simplex
Important characterizing
Ciona intestinalis
Important characterizing
Substratum LossHighHighHigh
SmotheringHighHighIntermediate
Increase in suspended sedimentLowLowLow
Decrease in suspended sediment
DesiccationNot relevantHighIntermediate
Increase in emergence regimeNot relevantHighHigh
Decrease in emergence regime
Increase in water flow rateHighIntermediateLow
Decrease in water flow rate
Increase in temperatureIntermediateHighIntermediate
Decrease in temperature
Increase in turbidityTolerantTolerantTolerant
Decrease in turbidity
Increase in wave exposureHighHighIntermediate
Decrease in wave exposure
NoiseLowTolerantTolerant
Visual PresenceLowTolerantTolerant
Abrasion & physical disturbanceIntermediateHighHigh
DisplacementHighLowHigh

Chemical factors

Neocrania anomala
Important characterizing
Protanthea simplex
Important characterizing
Ciona intestinalis
Important characterizing
Synthetic compound contaminationInsufficient informationInsufficient informationInsufficient information
Heavy metal contaminationInsufficient informationInsufficient informationInsufficient information
Hydrocarbon contaminationInsufficient informationInsufficient informationInsufficient information
Radionuclide contaminationInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsInsufficient informationInsufficient informationTolerant*
Increase in salinityTolerantIntermediateLow
Decrease in salinity
Changes in oxygenationLowIntermediateLow

Biological factors

Neocrania anomala
Important characterizing
Protanthea simplex
Important characterizing
Ciona intestinalis
Important characterizing
Introduction of microbial pathogens/parasitesInsufficient informationInsufficient informationInsufficient information
Introduction of non-native speciesInsufficient informationInsufficient informationIntermediate
Extraction of this speciesNot relevantNot relevantNot relevant
Extraction of other speciesTolerantIntermediateTolerant

Species used to indicate biotope recoverability

Physical factors

Neocrania anomala
Important characterizing
Protanthea simplex
Important characterizing
Ciona intestinalis
Important characterizing
Substratum LossModerateModerateHigh
SmotheringModerateModerateVery high
Increase in suspended sedimentVery highVery highImmediate
Decrease in suspended sediment
DesiccationNot relevantModerateVery high
Increase in emergence regimeNot relevantModerateHigh
Decrease in emergence regime
Increase in water flow rateModerateHighImmediate
Decrease in water flow rate
Increase in temperatureHighModerateVery high
Decrease in temperature
Increase in turbidityNot relevantNot relevantNot relevant
Decrease in turbidity
Increase in wave exposureModerateModerateVery high
Decrease in wave exposure
NoiseVery highNot relevantNot relevant
Visual PresenceVery highNot relevantNot relevant
Abrasion & physical disturbanceHighModerateHigh
DisplacementModerateVery highHigh

Chemical factors

Neocrania anomala
Important characterizing
Protanthea simplex
Important characterizing
Ciona intestinalis
Important characterizing
Synthetic compound contaminationInsufficient informationInsufficient informationInsufficient information
Heavy metal contaminationInsufficient informationInsufficient informationInsufficient information
Hydrocarbon contaminationInsufficient informationInsufficient informationInsufficient information
Radionuclide contaminationInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsInsufficient informationInsufficient informationNot relevant
Increase in salinityNot relevantHighImmediate
Decrease in salinity
Changes in oxygenationVery highHighImmediate

Biological factors

Neocrania anomala
Important characterizing
Protanthea simplex
Important characterizing
Ciona intestinalis
Important characterizing
Introduction of microbial pathogens/parasitesInsufficient informationInsufficient informationInsufficient information
Introduction of non-native speciesInsufficient informationInsufficient informationVery high
Extraction of this speciesNot relevantNot relevantNot relevant
Extraction of other speciesNot relevantHighNot relevant

This review can be cited as follows:

Jackson, A. 2005. Neocrania anomala and Protanthea simplex on very sheltered circalittoral rock. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 02/09/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=5&code=2004>