Biodiversity & Conservation

Seaweeds in sediment (sand or gravel)-floored eulittoral rockpools

LR.FLR.Rkp.SwSed


LR.SwSed

Image Tom Mercer - Seaweeds in sediment (sand or gravel)-floored eulittoral rockpools. Image width ca 1 m.
Image copyright information

Distribution map

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



Habitat sensitivity

Physical Factors

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

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 Low
Hydrocarbon contamination Intermediate Moderate Moderate Major decline Low
Radionuclide contamination Insufficient information Not relevant Insufficient information Not relevant Not relevant
Changes in nutrient levels Intermediate High Low Minor decline Low
Increase in salinity Low Very high Very low No change Low
Decrease in salinity Tolerant Not relevant Not sensitive No change Low
Changes in oxygenation Tolerant Not relevant Not sensitive No change Moderate

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 Intermediate None Very High Minor decline Low
Extraction of this species Intermediate High Low Decline Low
Extraction of other species Low Very high Very low Rise Low

Species used to indicate biotope intolerance

Physical factors

Furcellaria lumbricalis
Important characterizing
Ahnfeltia plicata
Important characterizing
Rhodothamniella floridula
Important characterizing
Littorina littorea
Important functional
Substratum LossHighHighHighHigh
SmotheringIntermediateIntermediateHighHigh
Increase in suspended sedimentIntermediateIntermediateIntermediateIntermediate
Decrease in suspended sedimentTolerantTolerantLow
DesiccationHighLowIntermediateLow
Increase in emergence regimeIntermediateIntermediateIntermediateLow
Decrease in emergence regimeTolerantTolerantTolerant
Increase in water flow rateIntermediateIntermediateTolerantIntermediate
Decrease in water flow rateTolerantIntermediateLow
Increase in temperatureLowLowLowLow
Decrease in temperatureTolerantLowLow
Increase in turbidityTolerantIntermediateIntermediateLow
Decrease in turbidityTolerantTolerant*Tolerant
Increase in wave exposureIntermediateIntermediateIntermediateIntermediate
Decrease in wave exposureTolerantLowTolerant
NoiseTolerantTolerantTolerantTolerant
Visual PresenceTolerantTolerantTolerantTolerant
Abrasion & physical disturbanceIntermediateIntermediateIntermediateIntermediate
DisplacementLowHighHighTolerant

Chemical factors

Furcellaria lumbricalis
Important characterizing
Ahnfeltia plicata
Important characterizing
Rhodothamniella floridula
Important characterizing
Littorina littorea
Important functional
Synthetic compound contaminationHighHighHighLow
Heavy metal contaminationInsufficient informationInsufficient informationInsufficient informationIntermediate
Hydrocarbon contaminationHighHighHighHigh
Radionuclide contaminationInsufficient informationInsufficient informationInsufficient informationInsufficient information
Changes in nutrient levelsIntermediateIntermediateIntermediateTolerant
Increase in salinityLowNot relevantNot relevantTolerant
Decrease in salinityTolerantLowHigh
Changes in oxygenationInsufficient informationInsufficient informationInsufficient informationLow

Biological factors

Furcellaria lumbricalis
Important characterizing
Ahnfeltia plicata
Important characterizing
Rhodothamniella floridula
Important characterizing
Littorina littorea
Important functional
Introduction of microbial pathogens/parasitesInsufficient informationInsufficient informationInsufficient informationInsufficient information
Introduction of non-native speciesInsufficient informationInsufficient informationInsufficient informationInsufficient information
Extraction of this speciesHighNot relevantNot relevantIntermediate
Extraction of other speciesIntermediateInsufficient informationInsufficient informationTolerant

Species used to indicate biotope recoverability

Physical factors

Furcellaria lumbricalis
Important characterizing
Ahnfeltia plicata
Important characterizing
Rhodothamniella floridula
Important characterizing
Littorina littorea
Important functional
Substratum LossModerateHighHighHigh
SmotheringModerateHighHighHigh
Increase in suspended sedimentModerateHighVery highHigh
Decrease in suspended sedimentNot relevantNot relevantVery high
DesiccationModerateImmediateVery highImmediate
Increase in emergence regimeModerateHighHighImmediate
Decrease in emergence regimeNot relevantNot relevantNot relevant
Increase in water flow rateModerateHighNot relevantHigh
Decrease in water flow rateNot relevantHighVery high
Increase in temperatureVery highVery highVery highImmediate
Decrease in temperatureNot relevantVery highVery high
Increase in turbidityNot relevantHighHighVery high
Decrease in turbidityNot relevantNot relevantNot relevant
Increase in wave exposureModerateHighHighHigh
Decrease in wave exposureNot relevantVery highNot relevant
NoiseNot relevantNot relevantNot relevantNot relevant
Visual PresenceNot relevantNot relevantNot relevantNot relevant
Abrasion & physical disturbanceModerateHighHighHigh
DisplacementVery highHighHighNot relevant

Chemical factors

Furcellaria lumbricalis
Important characterizing
Ahnfeltia plicata
Important characterizing
Rhodothamniella floridula
Important characterizing
Littorina littorea
Important functional
Synthetic compound contaminationModerateHighHighVery high
Heavy metal contaminationNot relevantInsufficient informationNot relevantHigh
Hydrocarbon contaminationModerateHighHighHigh
Radionuclide contaminationNot relevantInsufficient informationNot relevantInsufficient information
Changes in nutrient levelsModerateHighHighNot relevant
Increase in salinityVery highNot relevantNot relevantNot relevant
Decrease in salinityNot relevantVery highHigh
Changes in oxygenationNot relevantInsufficient informationNot relevantVery high

Biological factors

Furcellaria lumbricalis
Important characterizing
Ahnfeltia plicata
Important characterizing
Rhodothamniella floridula
Important characterizing
Littorina littorea
Important functional
Introduction of microbial pathogens/parasitesNot relevantInsufficient informationNot relevantInsufficient information
Introduction of non-native speciesNot relevantInsufficient informationNot relevantInsufficient information
Extraction of this speciesModerateNot relevantNot relevantHigh
Extraction of other speciesModerateInsufficient informationInsufficient informationNot relevant

This review can be cited as follows:

Tyler-Walters, H. 2005. Seaweeds in sediment (sand or gravel)-floored eulittoral rockpools. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 02/10/2014]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=326&code=2004>