Biodiversity & Conservation

Laminaria saccharina, Chorda filum and filamentous red seaweeds on sheltered infralittoral sediment

SS.SMp.KSwSS.LsacCho


IMX.LsacX

Image Anon. - Saccharina latissima, Chorda filum and filamentous red seaweeds on sheltered infralittoral sediment. Image width ca 50 cm in foreground.
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Distribution map

SS.SMp.KSwSS.LsacCho 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 Intermediate High Low Minor decline Moderate
Increase in suspended sediment Low Immediate Not sensitive No change Moderate
Decrease in suspended sediment Tolerant* Not relevant Not sensitive* No change Moderate
Desiccation Intermediate High Low Minor decline Low
Increase in emergence regime Intermediate High Low Decline Moderate
Decrease in emergence regime Tolerant* Not relevant Not sensitive* Rise High
Increase in water flow rate Intermediate Very high Low No change High
Decrease in water flow rate Intermediate Very high Low Minor decline Moderate
Increase in temperature Low High Low Minor decline Moderate
Decrease in temperature Low High Low Minor decline Moderate
Increase in turbidity Intermediate High Low No change Moderate
Decrease in turbidity Tolerant* Not relevant Not sensitive* Not relevant Moderate
Increase in wave exposure Intermediate High Low Decline Moderate
Decrease in wave exposure Intermediate Very high Low Minor decline Moderate
Noise Not relevant Not relevant Not relevant No change High
Visual Presence Not relevant Not relevant Not relevant No change High
Abrasion & physical disturbance Intermediate High Low Decline Moderate
Displacement Intermediate Very high Low Minor 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 Moderate
Heavy metal contamination Low High Low No change High
Hydrocarbon contamination Intermediate High Low Decline Moderate
Radionuclide contamination Insufficient information Not relevant Insufficient information Not relevant Not relevant
Changes in nutrient levels Low Very high Very low No change Moderate
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 Moderate

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 High Moderate Moderate Major decline Moderate
Extraction of this species Not relevant Not relevant Not relevant Not relevant Not relevant
Extraction of other species Not relevant Not relevant Not relevant Not relevant Not relevant

Species used to indicate biotope intolerance

Physical factors

Chorda filum
Important characterizing
Saccharina latissima
Important characterizing
Asterias rubens
Important functional
Arenicola marina
Important other
Substratum LossHighHighHighHigh
SmotheringIntermediateHighLowTolerant
Increase in suspended sedimentTolerantLowLowLow
Decrease in suspended sedimentTolerant
DesiccationHighHighHighNot relevant
Increase in emergence regimeHighIntermediateTolerantIntermediate
Decrease in emergence regimeTolerant*
Increase in water flow rateIntermediateLowIntermediateIntermediate
Decrease in water flow rateHigh
Increase in temperatureLowIntermediateHighIntermediate
Decrease in temperatureLowLow
Increase in turbidityLowLowLowLow
Decrease in turbidityTolerant*
Increase in wave exposureHighHighIntermediateIntermediate
Decrease in wave exposureNot relevantLow
NoiseTolerantTolerantTolerantTolerant
Visual PresenceTolerantTolerantTolerantTolerant
Abrasion & physical disturbanceIntermediateIntermediateIntermediateIntermediate
DisplacementHighIntermediateLowLow

Chemical factors

Chorda filum
Important characterizing
Saccharina latissima
Important characterizing
Asterias rubens
Important functional
Arenicola marina
Important other
Synthetic compound contaminationInsufficient informationLowIntermediateHigh
Heavy metal contaminationInsufficient informationIntermediateIntermediateLow
Hydrocarbon contaminationInsufficient informationLowHighIntermediate
Radionuclide contaminationInsufficient informationInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsIntermediateIntermediateLowIntermediate
Increase in salinityNot relevantHighHighLow
Decrease in salinityLow
Changes in oxygenationInsufficient informationInsufficient informationHighLow

Biological factors

Chorda filum
Important characterizing
Saccharina latissima
Important characterizing
Asterias rubens
Important functional
Arenicola marina
Important other
Introduction of microbial pathogens/parasitesInsufficient informationIntermediateIntermediateInsufficient information
Introduction of non-native speciesIntermediateInsufficient informationInsufficient informationInsufficient information
Extraction of this speciesIntermediateIntermediateNot relevantIntermediate
Extraction of other speciesInsufficient informationInsufficient informationLowIntermediate

Species used to indicate biotope recoverability

Physical factors

Chorda filum
Important characterizing
Saccharina latissima
Important characterizing
Asterias rubens
Important functional
Arenicola marina
Important other
Substratum LossHighHighHighHigh
SmotheringHighHighVery highNot relevant
Increase in suspended sedimentNot relevantHighHighImmediate
Decrease in suspended sedimentNot relevant
DesiccationHighHighHighNot relevant
Increase in emergence regimeHighHighNot relevantVery high
Decrease in emergence regimeNot relevant
Increase in water flow rateHighHighHighVery high
Decrease in water flow rateHigh
Increase in temperatureHighHighHighVery high
Decrease in temperatureHighHigh
Increase in turbidityImmediateHighVery highImmediate
Decrease in turbidityNot relevant
Increase in wave exposureHighHighHighVery high
Decrease in wave exposureNot relevantHigh
NoiseNot relevantNot relevantNot relevantNot relevant
Visual PresenceNot relevantNot relevantNot relevantNot relevant
Abrasion & physical disturbanceHighVery highHighVery high
DisplacementHighHighImmediateImmediate

Chemical factors

Chorda filum
Important characterizing
Saccharina latissima
Important characterizing
Asterias rubens
Important functional
Arenicola marina
Important other
Synthetic compound contaminationNot relevantHighHighHigh
Heavy metal contaminationNot relevantHighHighVery high
Hydrocarbon contaminationNot relevantHighHighHigh
Radionuclide contaminationNot relevantNot relevantInsufficient informationNot relevant
Changes in nutrient levelsHighHighHighHigh
Increase in salinityNot relevantHighHighImmediate
Decrease in salinityHigh
Changes in oxygenationNot relevantNot relevantHighImmediate

Biological factors

Chorda filum
Important characterizing
Saccharina latissima
Important characterizing
Asterias rubens
Important functional
Arenicola marina
Important other
Introduction of microbial pathogens/parasitesNot relevantHighHighNot relevant
Introduction of non-native speciesHighNot relevantInsufficient informationNot relevant
Extraction of this speciesHighHighNot relevantVery high
Extraction of other speciesNot relevantNot relevantHighVery high

This review can be cited as follows:

Hiscock, K. 2001. Laminaria saccharina, Chorda filum and filamentous red seaweeds on sheltered infralittoral sediment. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 27/08/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=58&code=2004>