Biodiversity & Conservation

Green seaweeds (Ulva spp. and Cladophora spp.) in upper shore rockpools

LR.FLR.Rkp.G


LR.G

Image Dale Cartlidge - Green seaweeds (Enteromorpha spp. and Cladophora spp.) in upper shore rockpools Image width ca 1m.
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Distribution map

LR.FLR.Rkp.G recorded (dark blue bullet) and expected (light blue bullet) distribution in Britain and Ireland (see below)


  • EC_Habitats
  • UK_BAP

Habitat sensitivity

Physical Factors

Click factor name to view rationale Intolerance Recoverability Sensitivity Species Richness Evidence / Confidence
Substratum Loss High Very high Low Major decline Low
Smothering Intermediate Very high Low Decline Moderate
Increase in suspended sediment Not relevant Not relevant Not relevant Not relevant Not relevant
Decrease in suspended sediment Tolerant Not relevant Not sensitive Not relevant Not relevant
Desiccation Intermediate Very high Low Minor decline Moderate
Increase in emergence regime Tolerant Not relevant Not sensitive Not relevant Low
Decrease in emergence regime High High Moderate Rise Low
Increase in water flow rate Not relevant Not relevant Not relevant Not relevant Not relevant
Decrease in water flow rate Not relevant Not relevant Not relevant Not relevant Not relevant
Increase in temperature Tolerant Not relevant Not sensitive Not relevant Moderate
Decrease in temperature Tolerant Not relevant Not sensitive Not relevant Moderate
Increase in turbidity Low Immediate Not sensitive No change Very low
Decrease in turbidity Tolerant* Not relevant Not sensitive* No change Moderate
Increase in wave exposure Low Very high Very low Rise Low
Decrease in wave exposure Tolerant Not relevant Not sensitive Not relevant Low
Noise Tolerant Not relevant Not sensitive No change Moderate
Visual Presence Tolerant Not relevant Not sensitive No change Moderate
Abrasion & physical disturbance High Very high Low Minor decline Moderate
Displacement High Very high Low Decline Low

Chemical Factors

Click factor name to view rationale Intolerance Recoverability Sensitivity Species Richness Evidence / Confidence
Synthetic compound contamination High Very high Low Decline Low
Heavy metal contamination Low High Low Minor decline Very low
Hydrocarbon contamination Intermediate Very high Low Decline Moderate
Radionuclide contamination Insufficient information Not relevant Insufficient information Not relevant Not relevant
Changes in nutrient levels Tolerant* Not relevant Not sensitive* Rise Low
Increase in salinity Tolerant Not relevant Not sensitive Not relevant High
Decrease in salinity Tolerant Not relevant Not sensitive Not relevant High
Changes in oxygenation Tolerant Not relevant Not sensitive Not relevant Moderate

Biological Factors

Click factor name to view rationale Intolerance Recoverability Sensitivity Species Richness Evidence / Confidence
Introduction of microbial pathogens/parasites Not relevant Not relevant Not relevant Not relevant Not relevant
Introduction of non-native species Not relevant Not relevant Not relevant Not relevant Not relevant
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

Ulva intestinalis
Key structural
Cladophora rupestris
Key structural
Substratum LossHighHigh
SmotheringHighIntermediate
Increase in suspended sedimentIntermediateTolerant
Decrease in suspended sedimentTolerantTolerant
DesiccationLowIntermediate
Increase in emergence regimeTolerant*Intermediate
Decrease in emergence regimeLowLow
Increase in water flow rateIntermediateLow
Decrease in water flow rateTolerantLow
Increase in temperatureTolerant*Tolerant
Decrease in temperatureTolerantTolerant
Increase in turbidityLowLow
Decrease in turbidityTolerant*Tolerant*
Increase in wave exposureLowLow
Decrease in wave exposureTolerantTolerant
NoiseNot relevantNot relevant
Visual PresenceNot relevantNot relevant
Abrasion & physical disturbanceHighTolerant
DisplacementTolerantHigh

Chemical factors

Ulva intestinalis
Key structural
Cladophora rupestris
Key structural
Synthetic compound contaminationIntermediateIntermediate
Heavy metal contaminationLowInsufficient information
Hydrocarbon contaminationHighIntermediate
Radionuclide contaminationInsufficient informationInsufficient information
Changes in nutrient levelsTolerant*Tolerant*
Increase in salinityTolerantTolerant
Decrease in salinityTolerantTolerant
Changes in oxygenationInsufficient informationInsufficient information

Biological factors

Ulva intestinalis
Key structural
Cladophora rupestris
Key structural
Introduction of microbial pathogens/parasitesInsufficient informationNot relevant
Introduction of non-native speciesNot relevantNot relevant
Extraction of this speciesIntermediateIntermediate
Extraction of other speciesNot relevantLow

Species used to indicate biotope recoverability

Physical factors

Ulva intestinalis
Key structural
Cladophora rupestris
Key structural
Substratum LossVery highVery high
SmotheringVery highVery high
Increase in suspended sedimentVery highNot relevant
Decrease in suspended sedimentNot relevantNot relevant
DesiccationVery highVery high
Increase in emergence regimeNot relevantVery high
Decrease in emergence regimeVery highVery high
Increase in water flow rateVery highImmediate
Decrease in water flow rateNot relevantImmediate
Increase in temperatureNot relevantNot relevant
Decrease in temperatureNot relevantNot relevant
Increase in turbidityVery highVery high
Decrease in turbidityNot relevantNot relevant
Increase in wave exposureVery highVery high
Decrease in wave exposureNot relevantNot relevant
NoiseNot relevantNot relevant
Visual PresenceNot relevantNot relevant
Abrasion & physical disturbanceVery highNot relevant
DisplacementNot relevantVery high

Chemical factors

Ulva intestinalis
Key structural
Cladophora rupestris
Key structural
Synthetic compound contaminationHighVery high
Heavy metal contaminationVery highNot relevant
Hydrocarbon contaminationVery highVery high
Radionuclide contaminationNot relevantNot relevant
Changes in nutrient levelsNot relevantNot relevant
Increase in salinityNot relevantNot relevant
Decrease in salinityNot relevantNot relevant
Changes in oxygenationNot relevantNot relevant

Biological factors

Ulva intestinalis
Key structural
Cladophora rupestris
Key structural
Introduction of microbial pathogens/parasitesNot relevantNot relevant
Introduction of non-native speciesNot relevantNot relevant
Extraction of this speciesVery highVery high
Extraction of other speciesNot relevantVery high

This review can be cited as follows:

Budd, G.C. 2002. Green seaweeds (Ulva spp. and Cladophora spp.) in upper shore rockpools. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 18/04/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=246&code=2004>