Biodiversity & Conservation

Rhodothamniella floridula on sand-scoured lower eulittoral rock

LR.MLR.Eph.Rho


MLR.Rho

Image Kate Northen - Sand tolerant red algae on lower shore. Image width ca 60 cm (foreground).
Image copyright information

Distribution map

LR.MLR.Eph.Rho 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 High
Smothering High High Moderate Major decline High
Increase in suspended sediment High High Moderate Major decline High
Decrease in suspended sediment Low High Low No change Low
Desiccation Intermediate High Low No change Moderate
Increase in emergence regime Intermediate High Low No change Low
Decrease in emergence regime Intermediate High Low Decline Low
Increase in water flow rate Tolerant Not relevant Not sensitive Decline High
Decrease in water flow rate Tolerant Not relevant Not sensitive Decline Moderate
Increase in temperature Low Very high Very low No change High
Decrease in temperature Intermediate High Low Decline Moderate
Increase in turbidity Intermediate High Low Decline Moderate
Decrease in turbidity Tolerant* Not relevant Not sensitive* No change Moderate
Increase in wave exposure High High Moderate Major decline High
Decrease in wave exposure High High Moderate No change Moderate
Noise Tolerant Not relevant Not sensitive No change High
Visual Presence Tolerant Not relevant Not sensitive No change High
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 Major decline Moderate
Heavy metal contamination Intermediate High Low Decline Moderate
Hydrocarbon contamination High High Moderate Major decline Moderate
Radionuclide contamination Insufficient information Not relevant Insufficient information Insufficient Information Not relevant
Changes in nutrient levels Intermediate High Low Decline High
Increase in salinity Tolerant Not relevant Not sensitive No change High
Decrease in salinity Intermediate High Low Decline Moderate
Changes in oxygenation Intermediate High Low Decline High

Biological Factors

Click factor name to view rationale Intolerance Recoverability Sensitivity Species Richness Evidence / Confidence
Introduction of microbial pathogens/parasites Insufficient information Not relevant Insufficient information Not relevant Not relevant
Introduction of non-native species Insufficient information Not relevant Insufficient information Insufficient Information Not relevant
Extraction of this species Intermediate High Low Decline Low
Extraction of other species Insufficient information Not relevant Insufficient information Not relevant Not relevant

Species used to indicate biotope intolerance

Physical factors

Rhodothamniella floridula
Important characterizing
Patella vulgata
Important functional
Fucus serratus
Important other
Substratum LossHighHighHigh
SmotheringHighHighHigh
Increase in suspended sedimentIntermediateLowLow
Decrease in suspended sedimentLowLow
DesiccationIntermediateLowIntermediate
Increase in emergence regimeIntermediateLowIntermediate
Decrease in emergence regimeTolerant
Increase in water flow rateTolerantLowIntermediate
Decrease in water flow rateLow
Increase in temperatureLowLowTolerant
Decrease in temperatureLow
Increase in turbidityIntermediateLowLow
Decrease in turbidityTolerant
Increase in wave exposureIntermediateLowHigh
Decrease in wave exposureTolerant
NoiseTolerantLowTolerant
Visual PresenceTolerantTolerantTolerant
Abrasion & physical disturbanceIntermediateLowIntermediate
DisplacementHighIntermediateHigh

Chemical factors

Rhodothamniella floridula
Important characterizing
Patella vulgata
Important functional
Fucus serratus
Important other
Synthetic compound contaminationHighHighHigh
Heavy metal contaminationInsufficient informationIntermediateLow
Hydrocarbon contaminationHighHighIntermediate
Radionuclide contaminationInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsIntermediateLowIntermediate
Increase in salinityNot relevantLowLow
Decrease in salinityHigh
Changes in oxygenationInsufficient informationIntermediateLow

Biological factors

Rhodothamniella floridula
Important characterizing
Patella vulgata
Important functional
Fucus serratus
Important other
Introduction of microbial pathogens/parasitesInsufficient informationInsufficient informationInsufficient information
Introduction of non-native speciesInsufficient informationNot relevantInsufficient information
Extraction of this speciesNot relevantIntermediateIntermediate
Extraction of other speciesInsufficient informationLowTolerant

Species used to indicate biotope recoverability

Physical factors

Rhodothamniella floridula
Important characterizing
Patella vulgata
Important functional
Fucus serratus
Important other
Substratum LossHighHighHigh
SmotheringHighHighHigh
Increase in suspended sedimentVery highHighVery high
Decrease in suspended sedimentVery highHigh
DesiccationVery highHighHigh
Increase in emergence regimeHighHighHigh
Decrease in emergence regimeNot relevant
Increase in water flow rateNot relevantHighHigh
Decrease in water flow rateVery high
Increase in temperatureVery highHighNot relevant
Decrease in temperatureVery high
Increase in turbidityHighVery highVery high
Decrease in turbidityNot relevant
Increase in wave exposureHighHighHigh
Decrease in wave exposureNot relevant
NoiseNot relevantHighNot relevant
Visual PresenceNot relevantNot relevantNot relevant
Abrasion & physical disturbanceHighVery highHigh
DisplacementHighHighHigh

Chemical factors

Rhodothamniella floridula
Important characterizing
Patella vulgata
Important functional
Fucus serratus
Important other
Synthetic compound contaminationHighHighHigh
Heavy metal contaminationNot relevantHighHigh
Hydrocarbon contaminationHighHighHigh
Radionuclide contaminationNot relevantInsufficient informationInsufficient information
Changes in nutrient levelsHighHighHigh
Increase in salinityNot relevantHighVery high
Decrease in salinityHigh
Changes in oxygenationNot relevantHighVery high

Biological factors

Rhodothamniella floridula
Important characterizing
Patella vulgata
Important functional
Fucus serratus
Important other
Introduction of microbial pathogens/parasitesNot relevantInsufficient informationInsufficient information
Introduction of non-native speciesNot relevantNot relevantInsufficient information
Extraction of this speciesNot relevantHighHigh
Extraction of other speciesInsufficient informationHighNot relevant

This review can be cited as follows:

Riley, K. 2002. Rhodothamniella floridula on sand-scoured 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 26/11/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=12&code=1997>