Biodiversity & Conservation

Himanthalia elongata and red seaweeds on exposed lower eulittoral rock

LR.ELR.FR.Him


ELR.Him

Image Keith Hiscock - Himanthalia elongata and Laminaria digitata on lower shore bedrock. Image width ca XX cm.
Image copyright information

Distribution map

LR.ELR.FR.Him 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 High
Smothering High High Moderate Major decline Moderate
Increase in suspended sediment Intermediate High Low Decline Moderate
Decrease in suspended sediment Low Immediate Not sensitive No change Moderate
Desiccation Intermediate High Low Minor decline Moderate
Increase in emergence regime Intermediate High Low Decline Low
Decrease in emergence regime Tolerant Not relevant Not sensitive Not relevant Low
Increase in water flow rate Tolerant Not relevant Not sensitive Not relevant Very low
Decrease in water flow rate Low Very high Very low No change Very low
Increase in temperature Low High Low Decline Low
Decrease in temperature Intermediate High Low Decline Low
Increase in turbidity Low Very high Very low No change Low
Decrease in turbidity Tolerant* Not relevant Not sensitive* Not relevant Moderate
Increase in wave exposure High Moderate Moderate Major decline Low
Decrease in wave exposure High Moderate Moderate Decline Low
Noise Tolerant Not relevant Not sensitive No change High
Visual Presence Tolerant Not relevant Not sensitive No change High
Abrasion & physical disturbance Low High Low Minor decline Moderate
Displacement High Moderate Moderate Major decline Low

Chemical Factors

Click factor name to view rationale Intolerance Recoverability Sensitivity Species Richness Evidence / Confidence
Synthetic compound contamination High Moderate Moderate Major decline Moderate
Heavy metal contamination Intermediate High Low Decline Low
Hydrocarbon contamination High Moderate Moderate Major decline Moderate
Radionuclide contamination Insufficient information Not relevant Insufficient information Not relevant Not relevant
Changes in nutrient levels Intermediate High Low Decline Low
Increase in salinity Not relevant Not relevant Not relevant Not relevant Not relevant
Decrease in salinity Intermediate High Low 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 High Low Low
Introduction of non-native species Tolerant Not relevant Not sensitive Not relevant Low
Extraction of this species Intermediate High Low Decline Moderate
Extraction of other species Not relevant Not relevant Not relevant Not relevant Not relevant

Species used to indicate biotope intolerance

Physical factors

Himanthalia elongata
Important characterizing
Palmaria palmata
Important characterizing
Chondrus crispus
Important characterizing
Corallina officinalis
Important characterizing
Patella vulgata
Important characterizing
Semibalanus balanoides
Important characterizing
Nucella lapillus
Important other
Mytilus edulis
Important other
Substratum LossHighHighHighHighHighHighHighHigh
SmotheringHighIntermediateIntermediateIntermediateHighIntermediateLowIntermediate
Increase in suspended sedimentHighLowIntermediateIntermediateLowLowLowLow
Decrease in suspended sedimentTolerantLowTolerantLow
DesiccationHighIntermediateIntermediateHighLowIntermediateIntermediateLow
Increase in emergence regimeIntermediateIntermediateIntermediateIntermediateLowHighIntermediateLow
Decrease in emergence regimeTolerantTolerantLow
Increase in water flow rateIntermediateIntermediateIntermediateLowLowLowLowLow
Decrease in water flow rateIntermediateTolerantLow
Increase in temperatureIntermediateIntermediateLowIntermediateLowIntermediateIntermediateLow
Decrease in temperatureLowLowLow
Increase in turbidityLowLowLowLowLowLowTolerantTolerant
Decrease in turbidityTolerant*TolerantTolerant
Increase in wave exposureHighIntermediateIntermediateLowLowLowIntermediateIntermediate
Decrease in wave exposureLowIntermediateIntermediate
NoiseTolerantNot relevantTolerantTolerantLowTolerantTolerantTolerant*
Visual PresenceTolerantNot relevantTolerantTolerantTolerantTolerantTolerantTolerant*
Abrasion & physical disturbanceIntermediateIntermediateLowLowLowIntermediateLowIntermediate
DisplacementHighHighHighLowIntermediateHighIntermediateIntermediate

Chemical factors

Himanthalia elongata
Important characterizing
Palmaria palmata
Important characterizing
Chondrus crispus
Important characterizing
Corallina officinalis
Important characterizing
Patella vulgata
Important characterizing
Semibalanus balanoides
Important characterizing
Nucella lapillus
Important other
Mytilus edulis
Important other
Synthetic compound contaminationLowHighHighIntermediateHighIntermediateHighIntermediate
Heavy metal contaminationInsufficient informationIntermediateInsufficient informationInsufficient informationIntermediateLowLowIntermediate
Hydrocarbon contaminationIntermediateHighLowLowHighIntermediateIntermediateIntermediate
Radionuclide contaminationInsufficient informationInsufficient informationInsufficient informationInsufficient informationInsufficient informationInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsIntermediateIntermediateIntermediateLowLowIntermediateHighIntermediate
Increase in salinityHighIntermediateTolerantIntermediateLowLowLowLow
Decrease in salinityLowIntermediateLow
Changes in oxygenationInsufficient informationLowInsufficient informationInsufficient informationIntermediateIntermediateIntermediateLow

Biological factors

Himanthalia elongata
Important characterizing
Palmaria palmata
Important characterizing
Chondrus crispus
Important characterizing
Corallina officinalis
Important characterizing
Patella vulgata
Important characterizing
Semibalanus balanoides
Important characterizing
Nucella lapillus
Important other
Mytilus edulis
Important other
Introduction of microbial pathogens/parasitesInsufficient informationInsufficient informationIntermediateLowInsufficient informationIntermediateIntermediateIntermediate
Introduction of non-native speciesInsufficient informationNot relevantInsufficient informationNot relevantNot relevantIntermediateInsufficient informationInsufficient information
Extraction of this speciesIntermediateIntermediateIntermediateIntermediateIntermediateNot relevantNot relevantIntermediate
Extraction of other speciesTolerant*IntermediateInsufficient informationIntermediateLowIntermediateLowLow

Species used to indicate biotope recoverability

Physical factors

Himanthalia elongata
Important characterizing
Palmaria palmata
Important characterizing
Chondrus crispus
Important characterizing
Corallina officinalis
Important characterizing
Patella vulgata
Important characterizing
Semibalanus balanoides
Important characterizing
Nucella lapillus
Important other
Mytilus edulis
Important other
Substratum LossHighHighHighHighHighHighLowHigh
SmotheringHighHighHighVery highHighHighImmediateHigh
Increase in suspended sedimentHighHighHighVery highHighVery highImmediateImmediate
Decrease in suspended sedimentNot relevantHighNot relevantImmediate
DesiccationHighHighHighHighHighHighHighImmediate
Increase in emergence regimeHighHighHighVery highHighHighHighVery high
Decrease in emergence regimeNot relevantNot relevantVery high
Increase in water flow rateHighHighHighVery highHighVery highVery highVery high
Decrease in water flow rateHighNot relevantVery high
Increase in temperatureHighHighVery highHighHighHighHighVery high
Decrease in temperatureVery highVery highVery high
Increase in turbidityVery highVery highVery highImmediateVery highVery highNot relevantNot relevant
Decrease in turbidityNot relevantNot relevantNot relevant
Increase in wave exposureHighHighHighVery highHighHighHighHigh
Decrease in wave exposureVery highHighHigh
NoiseNot relevantNot relevantNot relevantNot relevantHighNot relevantNot relevantNot relevant
Visual PresenceNot relevantNot relevantNot relevantNot relevantNot relevantNot relevantNot relevantNot relevant
Abrasion & physical disturbanceHighHighVery highHighVery highHighImmediateHigh
DisplacementHighHighHighHighHighHighHighHigh

Chemical factors

Himanthalia elongata
Important characterizing
Palmaria palmata
Important characterizing
Chondrus crispus
Important characterizing
Corallina officinalis
Important characterizing
Patella vulgata
Important characterizing
Semibalanus balanoides
Important characterizing
Nucella lapillus
Important other
Mytilus edulis
Important other
Synthetic compound contaminationHighHighHighHighHighModerateLowHigh
Heavy metal contaminationNot relevantHighInsufficient informationInsufficient informationHighHighVery highHigh
Hydrocarbon contaminationHighHighVery highVery highHighModerateHighHigh
Radionuclide contaminationNot relevantInsufficient informationInsufficient informationInsufficient informationInsufficient informationNot relevantInsufficient informationNot relevant
Changes in nutrient levelsHighHighHighVery highHighHighLowHigh
Increase in salinityHighHighNot relevantHighHighHighVery highVery high
Decrease in salinityVery highHighVery high
Changes in oxygenationNot relevantImmediateInsufficient informationInsufficient informationHighHighHighVery high

Biological factors

Himanthalia elongata
Important characterizing
Palmaria palmata
Important characterizing
Chondrus crispus
Important characterizing
Corallina officinalis
Important characterizing
Patella vulgata
Important characterizing
Semibalanus balanoides
Important characterizing
Nucella lapillus
Important other
Mytilus edulis
Important other
Introduction of microbial pathogens/parasitesNot relevantNot relevantHighVery highInsufficient informationHighHighHigh
Introduction of non-native speciesNot relevantNot relevantInsufficient informationNot relevantNot relevantHighNot relevantNot relevant
Extraction of this speciesHighHighHighHighHighNot relevantNot relevantHigh
Extraction of other speciesNot relevantHighInsufficient informationHighHighHighVery highVery high

This review can be cited as follows:

Budd, G.C. 2002. Himanthalia elongata and red seaweeds on exposed lower eulittoral rock. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 01/10/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=360&code=1997>