Biodiversity & Conservation

Laminaria saccharina and/or Saccorhiza polyschides on exposed infralittoral rock

IR.EIR.KFaR.LsacSac


EIR.LsacSac

Image Paul Brazier - Saccharina latissima and/or Saccorhiza polyschides on exposed infralittoral rock. Image width ca XX m.
Image copyright information

Distribution map

IR.EIR.KFaR.LsacSac 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 High
Smothering Intermediate Very high Low Minor decline High
Increase in suspended sediment Low Immediate Not sensitive No change High
Decrease in suspended sediment Tolerant* Not relevant Not sensitive* No change High
Desiccation High High Moderate Decline Moderate
Increase in emergence regime Intermediate High Low Decline Moderate
Decrease in emergence regime Tolerant* Not relevant Not sensitive* No change Low
Increase in water flow rate Tolerant* Not relevant Not sensitive* No change High
Decrease in water flow rate Low Immediate Not sensitive No change High
Increase in temperature Intermediate Very high Low No change Low
Decrease in temperature Tolerant Not relevant Not sensitive No change Moderate
Increase in turbidity Intermediate High Low Minor decline Moderate
Decrease in turbidity Tolerant* Not relevant Not sensitive* No change Low
Increase in wave exposure High High Moderate Decline Moderate
Decrease in wave exposure High High Moderate Rise Moderate
Noise Tolerant Not relevant Not sensitive Not relevant High
Visual Presence Tolerant Not relevant Not sensitive Not relevant High
Abrasion & physical disturbance Intermediate Very high Low Minor decline Moderate
Displacement High High Moderate Decline Moderate

Chemical Factors

Click factor name to view rationale Intolerance Recoverability Sensitivity Species Richness Evidence / Confidence
Synthetic compound contamination Low Very high Very low No change Low
Heavy metal contamination Low Very high Very low No change Low
Hydrocarbon contamination Intermediate Very high Low Minor decline Low
Radionuclide contamination Insufficient information Insufficient information Insufficient information Insufficient Information Not relevant
Changes in nutrient levels Tolerant* Not relevant Not sensitive* No change Low
Increase in salinity Not relevant Not relevant Not relevant Not relevant Moderate
Decrease in salinity Intermediate High Low Minor decline Low
Changes in oxygenation Intermediate High Low Minor decline Low

Biological Factors

Click factor name to view rationale Intolerance Recoverability Sensitivity Species Richness Evidence / Confidence
Introduction of microbial pathogens/parasites Low Very high Very low Moderate
Introduction of non-native species Tolerant Not relevant Not sensitive Not relevant Moderate
Extraction of this species Intermediate High Low No change Moderate
Extraction of other species High High Moderate Decline Moderate

Species used to indicate biotope intolerance

Physical factors

Saccharina latissima
Key structural
Saccorhiza polyschides
Key structural
Echinus esculentus
Important functional
Lithophyllum incrustans
Important functional
Substratum LossHighHighHighHigh
SmotheringHighLowIntermediateLow
Increase in suspended sedimentLowIntermediateLowLow
Decrease in suspended sedimentTolerant*
DesiccationHighHighIntermediateHigh
Increase in emergence regimeIntermediateHighLowHigh
Decrease in emergence regimeTolerant
Increase in water flow rateLowLowLowLow
Decrease in water flow rateLow
Increase in temperatureIntermediateIntermediateIntermediateTolerant
Decrease in temperatureTolerant
Increase in turbidityLowLowLowLow
Decrease in turbidityTolerant*
Increase in wave exposureHighTolerantLowTolerant
Decrease in wave exposureLow
NoiseTolerantTolerantTolerantTolerant
Visual PresenceTolerantTolerantLowTolerant
Abrasion & physical disturbanceIntermediateIntermediateIntermediateIntermediate
DisplacementIntermediateLowLowLow

Chemical factors

Saccharina latissima
Key structural
Saccorhiza polyschides
Key structural
Echinus esculentus
Important functional
Lithophyllum incrustans
Important functional
Synthetic compound contaminationLowIntermediateHighHigh
Heavy metal contaminationIntermediateIntermediateHighInsufficient information
Hydrocarbon contaminationLowLowHighHigh
Radionuclide contaminationInsufficient informationInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsIntermediateLowTolerant*Low
Increase in salinityHighHighIntermediateInsufficient information
Decrease in salinityIntermediate
Changes in oxygenationInsufficient informationLowIntermediateInsufficient information

Biological factors

Saccharina latissima
Key structural
Saccorhiza polyschides
Key structural
Echinus esculentus
Important functional
Lithophyllum incrustans
Important functional
Introduction of microbial pathogens/parasitesIntermediateInsufficient informationIntermediateInsufficient information
Introduction of non-native speciesInsufficient informationIntermediateNot relevantInsufficient information
Extraction of this speciesIntermediateIntermediateIntermediateNot relevant
Extraction of other speciesInsufficient informationTolerant*IntermediateIntermediate

Species used to indicate biotope recoverability

Physical factors

Saccharina latissima
Key structural
Saccorhiza polyschides
Key structural
Echinus esculentus
Important functional
Lithophyllum incrustans
Important functional
Substratum LossHighHighHighLow
SmotheringHighImmediateHighVery high
Increase in suspended sedimentHighHighVery highVery high
Decrease in suspended sedimentNot relevant
DesiccationHighHighHighLow
Increase in emergence regimeHighHighVery highLow
Decrease in emergence regimeNot relevant
Increase in water flow rateHighHighVery highVery high
Decrease in water flow rateVery high
Increase in temperatureHighHighHighNot relevant
Decrease in temperatureNot relevant
Increase in turbidityHighHighVery highVery high
Decrease in turbidityNot relevant
Increase in wave exposureHighNot relevantVery highNot relevant
Decrease in wave exposureImmediate
NoiseNot relevantNot relevantNot relevantNot relevant
Visual PresenceNot relevantNot relevantImmediateNot relevant
Abrasion & physical disturbanceVery highHighHighHigh
DisplacementHighVery highVery highVery high

Chemical factors

Saccharina latissima
Key structural
Saccorhiza polyschides
Key structural
Echinus esculentus
Important functional
Lithophyllum incrustans
Important functional
Synthetic compound contaminationHighHighHighLow
Heavy metal contaminationHighHighHighNot relevant
Hydrocarbon contaminationHighHighHighHigh
Radionuclide contaminationNot relevantNot relevantInsufficient informationNot relevant
Changes in nutrient levelsHighHighNot relevantHigh
Increase in salinityHighHighHighNot relevant
Decrease in salinityHigh
Changes in oxygenationNot relevantHighHighNot relevant

Biological factors

Saccharina latissima
Key structural
Saccorhiza polyschides
Key structural
Echinus esculentus
Important functional
Lithophyllum incrustans
Important functional
Introduction of microbial pathogens/parasitesHighNot relevantHighNot relevant
Introduction of non-native speciesNot relevantHighNot relevantNot relevant
Extraction of this speciesHighVery highHighNot relevant
Extraction of other speciesNot relevantNot relevantHighHigh

This review can be cited as follows:

Hiscock, K. 2002. Laminaria saccharina and/or Saccorhiza polyschides on exposed infralittoral rock. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 21/04/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=237&code=1997>