Biodiversity & Conservation

Laminaria saccharina, Chorda filum and dense red seaweeds on shallow unstable infralittoral boulders or cobbles

IR.MIR.SedK.LsacChoR


MIR.LsacChoR

Image Keith Hiscock - Saccharina latissima, Chorda filum and dense red seaweeds on shallow unstable infralittoral boulders or cobbles. Image width ca 1m in foreground.
Image copyright information

Distribution map

IR.MIR.SedK.LsacChoR 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 High Low Minor decline Moderate
Increase in suspended sediment Low Immediate Not sensitive No change Low
Decrease in suspended sediment Tolerant* Not relevant Not sensitive* No change Moderate
Desiccation Intermediate High Low Decline Moderate
Increase in emergence regime High High Moderate Decline Moderate
Decrease in emergence regime Tolerant* Not relevant Not sensitive* Rise High
Increase in water flow rate Low Very high Very low Minor decline Moderate
Decrease in water flow rate Low Very high Very low Minor decline Moderate
Increase in temperature Low High Low Minor decline Moderate
Decrease in temperature Low High Low No change Moderate
Increase in turbidity Low High Low No change Moderate
Decrease in turbidity Tolerant* Not relevant Not sensitive* Rise Moderate
Increase in wave exposure Intermediate High Low Decline Moderate
Decrease in wave exposure Low Very high Very low Minor decline Moderate
Noise Not relevant Not relevant Not relevant No change Moderate
Visual Presence Not relevant Not relevant Not relevant No change Moderate
Abrasion & physical disturbance Intermediate High Low Major 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 Intermediate High Low No change Low
Heavy metal contamination Low High Low No change Low
Hydrocarbon contamination Low High Low Minor decline Low
Radionuclide contamination Insufficient information Not relevant Insufficient information Insufficient Information Not relevant
Changes in nutrient levels Intermediate High Low Minor decline Low
Increase in salinity Not relevant Not relevant Not relevant Not relevant Not relevant
Decrease in salinity High High Moderate Decline Moderate
Changes in oxygenation Low High Low Minor decline Very 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 No change Moderate
Introduction of non-native species Tolerant Not relevant Not sensitive No change Moderate
Extraction of this species Intermediate High Low No change Low
Extraction of other species Not relevant Not relevant Not relevant Not relevant Not relevant

Species used to indicate biotope intolerance

Physical factors

Saccharina latissima
Key structural
Chorda filum
Important characterizing
Lithophyllum incrustans
Important characterizing
Delesseria sanguinea
Important other
Substratum LossHighHighHighHigh
SmotheringHighIntermediateLowIntermediate
Increase in suspended sedimentLowTolerantLowLow
Decrease in suspended sedimentTolerantTolerant*
DesiccationHighHighHighHigh
Increase in emergence regimeIntermediateHighHighIntermediate
Decrease in emergence regimeTolerant*Tolerant
Increase in water flow rateLowIntermediateLowIntermediate
Decrease in water flow rateHighLow
Increase in temperatureIntermediateLowTolerantLow
Decrease in temperatureLowTolerant
Increase in turbidityLowLowLowTolerant
Decrease in turbidityTolerant*Tolerant*
Increase in wave exposureHighHighTolerantTolerant
Decrease in wave exposureNot relevantLow
NoiseTolerantTolerantTolerantTolerant
Visual PresenceTolerantTolerantTolerantTolerant
Abrasion & physical disturbanceIntermediateIntermediateIntermediateIntermediate
DisplacementIntermediateHighLowHigh

Chemical factors

Saccharina latissima
Key structural
Chorda filum
Important characterizing
Lithophyllum incrustans
Important characterizing
Delesseria sanguinea
Important other
Synthetic compound contaminationLowInsufficient informationHighHigh
Heavy metal contaminationIntermediateInsufficient informationInsufficient informationLow
Hydrocarbon contaminationLowInsufficient informationHighHigh
Radionuclide contaminationInsufficient informationInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsIntermediateIntermediateLowLow
Increase in salinityHighNot relevantInsufficient informationLow
Decrease in salinityLowIntermediate
Changes in oxygenationInsufficient informationInsufficient informationInsufficient informationHigh

Biological factors

Saccharina latissima
Key structural
Chorda filum
Important characterizing
Lithophyllum incrustans
Important characterizing
Delesseria sanguinea
Important other
Introduction of microbial pathogens/parasitesIntermediateInsufficient informationInsufficient informationInsufficient information
Introduction of non-native speciesInsufficient informationIntermediateInsufficient informationNot relevant
Extraction of this speciesIntermediateIntermediateNot relevantNot relevant
Extraction of other speciesInsufficient informationInsufficient informationIntermediateTolerant*

Species used to indicate biotope recoverability

Physical factors

Saccharina latissima
Key structural
Chorda filum
Important characterizing
Lithophyllum incrustans
Important characterizing
Delesseria sanguinea
Important other
Substratum LossHighHighLowHigh
SmotheringHighHighVery highHigh
Increase in suspended sedimentHighNot relevantVery highImmediate
Decrease in suspended sedimentNot relevantNot relevant
DesiccationHighHighLowHigh
Increase in emergence regimeHighHighLowHigh
Decrease in emergence regimeNot relevantNot relevant
Increase in water flow rateHighHighVery highHigh
Decrease in water flow rateHighVery high
Increase in temperatureHighHighNot relevantImmediate
Decrease in temperatureHighNot relevant
Increase in turbidityHighImmediateVery highNot relevant
Decrease in turbidityNot relevantNot relevant
Increase in wave exposureHighHighNot relevantNot relevant
Decrease in wave exposureNot relevantImmediate
NoiseNot relevantNot relevantNot relevantNot relevant
Visual PresenceNot relevantNot relevantNot relevantNot relevant
Abrasion & physical disturbanceVery highHighHighHigh
DisplacementHighHighVery highHigh

Chemical factors

Saccharina latissima
Key structural
Chorda filum
Important characterizing
Lithophyllum incrustans
Important characterizing
Delesseria sanguinea
Important other
Synthetic compound contaminationHighNot relevantLowHigh
Heavy metal contaminationHighNot relevantNot relevantVery high
Hydrocarbon contaminationHighNot relevantHighHigh
Radionuclide contaminationNot relevantNot relevantNot relevantNot relevant
Changes in nutrient levelsHighHighHighImmediate
Increase in salinityHighNot relevantNot relevantImmediate
Decrease in salinityHighHigh
Changes in oxygenationNot relevantNot relevantNot relevantHigh

Biological factors

Saccharina latissima
Key structural
Chorda filum
Important characterizing
Lithophyllum incrustans
Important characterizing
Delesseria sanguinea
Important other
Introduction of microbial pathogens/parasitesHighNot relevantNot relevantInsufficient information
Introduction of non-native speciesNot relevantHighNot relevantNot relevant
Extraction of this speciesHighHighNot relevantNot relevant
Extraction of other speciesNot relevantNot relevantHighNot relevant

This review can be cited as follows:

Hiscock, K. 2001. Laminaria saccharina, Chorda filum and dense red seaweeds on shallow unstable infralittoral boulders or cobbles. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 27/11/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=363&code=1997>