Biodiversity & Conservation

Mixed fucoids, Chorda filum and green seaweeds on reduced salinity infralittoral rock

IR.SIR.Lag.FChoG


SIR.FChoG

Image Sue Scott - Fucoids and Chorda filum submerged. Image width ca 40 cm (foreground).
Image copyright information

Distribution map

IR.SIR.Lag.FChoG 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 Intermediate High Low Minor decline Moderate
Increase in emergence regime Intermediate High Low Minor decline Moderate
Decrease in emergence regime Not relevant Not relevant Not relevant No change Moderate
Increase in water flow rate Low Very high Very low No change Low
Decrease in water flow rate Not relevant Not relevant Not relevant Not relevant Not relevant
Increase in temperature Low Very high Very low No change High
Decrease in temperature Low Very high Very low No change High
Increase in turbidity Low Very high Very low No change Low
Decrease in turbidity Tolerant* Very high Not sensitive* No change Low
Increase in wave exposure Intermediate High Low Minor decline Moderate
Decrease in wave exposure Not relevant Not relevant Not relevant No change High
Noise Tolerant Not relevant Not sensitive Not relevant Not relevant
Visual Presence Tolerant Not relevant Not sensitive Not relevant Not relevant
Abrasion & physical disturbance Intermediate High Low Decline Moderate
Displacement High High Moderate Major decline High

Chemical Factors

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

Species used to indicate biotope intolerance

Physical factors

Fucus serratus
Important characterizing
Fucus vesiculosus
Important characterizing
Chorda filum
Important characterizing
Substratum LossHighIntermediateHigh
SmotheringHighHighIntermediate
Increase in suspended sedimentLowLowTolerant
Decrease in suspended sedimentTolerant
DesiccationIntermediateIntermediateHigh
Increase in emergence regimeIntermediateIntermediateHigh
Decrease in emergence regimeTolerant*
Increase in water flow rateIntermediateIntermediateIntermediate
Decrease in water flow rateHigh
Increase in temperatureTolerantTolerantLow
Decrease in temperatureLow
Increase in turbidityLowLowLow
Decrease in turbidityTolerant*
Increase in wave exposureHighIntermediateHigh
Decrease in wave exposureNot relevant
NoiseTolerantTolerantTolerant
Visual PresenceTolerantTolerantTolerant
Abrasion & physical disturbanceIntermediateIntermediateIntermediate
DisplacementHighHighHigh

Chemical factors

Fucus serratus
Important characterizing
Fucus vesiculosus
Important characterizing
Chorda filum
Important characterizing
Synthetic compound contaminationHighIntermediateInsufficient information
Heavy metal contaminationLowLowInsufficient information
Hydrocarbon contaminationIntermediateLowInsufficient information
Radionuclide contaminationInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsIntermediateIntermediateIntermediate
Increase in salinityLowLowNot relevant
Decrease in salinityLow
Changes in oxygenationLowInsufficient informationInsufficient information

Biological factors

Fucus serratus
Important characterizing
Fucus vesiculosus
Important characterizing
Chorda filum
Important characterizing
Introduction of microbial pathogens/parasitesInsufficient informationInsufficient informationInsufficient information
Introduction of non-native speciesInsufficient informationInsufficient informationIntermediate
Extraction of this speciesIntermediateIntermediateIntermediate
Extraction of other speciesTolerantInsufficient informationInsufficient information

Species used to indicate biotope recoverability

Physical factors

Fucus serratus
Important characterizing
Fucus vesiculosus
Important characterizing
Chorda filum
Important characterizing
Substratum LossHighHighHigh
SmotheringHighHighHigh
Increase in suspended sedimentVery highImmediateNot relevant
Decrease in suspended sedimentNot relevant
DesiccationHighHighHigh
Increase in emergence regimeHighHighHigh
Decrease in emergence regimeNot relevant
Increase in water flow rateHighHighHigh
Decrease in water flow rateHigh
Increase in temperatureNot relevantNot relevantHigh
Decrease in temperatureHigh
Increase in turbidityVery highImmediateImmediate
Decrease in turbidityNot relevant
Increase in wave exposureHighHighHigh
Decrease in wave exposureNot relevant
NoiseNot relevantNot relevantNot relevant
Visual PresenceNot relevantNot relevantNot relevant
Abrasion & physical disturbanceHighHighHigh
DisplacementHighHighHigh

Chemical factors

Fucus serratus
Important characterizing
Fucus vesiculosus
Important characterizing
Chorda filum
Important characterizing
Synthetic compound contaminationHighHighNot relevant
Heavy metal contaminationHighHighNot relevant
Hydrocarbon contaminationHighHighNot relevant
Radionuclide contaminationInsufficient informationNot relevantNot relevant
Changes in nutrient levelsHighHighHigh
Increase in salinityVery highHighNot relevant
Decrease in salinityHigh
Changes in oxygenationVery highNot relevantNot relevant

Biological factors

Fucus serratus
Important characterizing
Fucus vesiculosus
Important characterizing
Chorda filum
Important characterizing
Introduction of microbial pathogens/parasitesInsufficient informationNot relevantNot relevant
Introduction of non-native speciesInsufficient informationNot relevantHigh
Extraction of this speciesHighHighHigh
Extraction of other speciesNot relevantNot relevantNot relevant

This review can be cited as follows:

Hill, J.M. 2001. Mixed fucoids, Chorda filum and green seaweeds on reduced salinity infralittoral rock. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 24/07/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=356&code=1997>