Biodiversity & Conservation

Ulva spp. on freshwater-influenced or unstable upper eulittoral rock

LR.MLR.Eph.Ent


MLR.Ent

Image David George - Fallen chalk blocks covered in Enteromorpha. Image width ca 4 m.
Image copyright information

Distribution map

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

Chemical Factors

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

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 Intermediate Very high Low Decline High
Extraction of other species Not relevant Not relevant Not relevant Not relevant Not relevant

Species used to indicate biotope intolerance

Physical factors

Ulva intestinalis
Important characterizing
Substratum LossHigh
SmotheringHigh
Increase in suspended sedimentIntermediate
Decrease in suspended sedimentTolerant
DesiccationLow
Increase in emergence regimeTolerant*
Decrease in emergence regimeLow
Increase in water flow rateIntermediate
Decrease in water flow rateTolerant
Increase in temperatureTolerant*
Decrease in temperatureTolerant
Increase in turbidityLow
Decrease in turbidityTolerant*
Increase in wave exposureLow
Decrease in wave exposureTolerant
NoiseNot relevant
Visual PresenceNot relevant
Abrasion & physical disturbanceHigh
DisplacementTolerant

Chemical factors

Ulva intestinalis
Important characterizing
Synthetic compound contaminationIntermediate
Heavy metal contaminationLow
Hydrocarbon contaminationHigh
Radionuclide contaminationInsufficient information
Changes in nutrient levelsTolerant*
Increase in salinityTolerant
Decrease in salinityTolerant
Changes in oxygenationInsufficient information

Biological factors

Ulva intestinalis
Important characterizing
Introduction of microbial pathogens/parasitesInsufficient information
Introduction of non-native speciesNot relevant
Extraction of this speciesIntermediate
Extraction of other speciesNot relevant

Species used to indicate biotope recoverability

Physical factors

Ulva intestinalis
Important characterizing
Substratum LossVery high
SmotheringVery high
Increase in suspended sedimentVery high
Decrease in suspended sedimentNot relevant
DesiccationVery high
Increase in emergence regimeNot relevant
Decrease in emergence regimeVery high
Increase in water flow rateVery high
Decrease in water flow rateNot relevant
Increase in temperatureNot relevant
Decrease in temperatureNot relevant
Increase in turbidityVery high
Decrease in turbidityNot relevant
Increase in wave exposureVery high
Decrease in wave exposureNot relevant
NoiseNot relevant
Visual PresenceNot relevant
Abrasion & physical disturbanceVery high
DisplacementNot relevant

Chemical factors

Ulva intestinalis
Important characterizing
Synthetic compound contaminationHigh
Heavy metal contaminationVery high
Hydrocarbon contaminationVery high
Radionuclide contaminationNot relevant
Changes in nutrient levelsNot relevant
Increase in salinityNot relevant
Decrease in salinityNot relevant
Changes in oxygenationNot relevant

Biological factors

Ulva intestinalis
Important characterizing
Introduction of microbial pathogens/parasitesNot relevant
Introduction of non-native speciesNot relevant
Extraction of this speciesVery high
Extraction of other speciesNot relevant

This review can be cited as follows:

Budd, G.C. 2004. Ulva spp. on freshwater-influenced or unstable upper eulittoral rock. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 25/10/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=104&code=1997>