Biodiversity & Conservation

Sensitivity

Importance

Laminaria saccharina on reduced or low salinity infralittoral rock

IR.SIR.K.LsacRS

<i>%Laminaria saccharina%</i> on reduced or low salinity infralittoral rock

IR.SIR.K.LsacRS recorded () and expected () 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	High
Smothering	Intermediate	High	Low	Decline	Moderate
Increase in suspended sediment	Low	Very high	Very low	No change	Moderate
Decrease in suspended sediment	Low	Very high	Very low	No change	Moderate
Desiccation	Low	High	Low	Minor decline	Moderate
Increase in emergence regime	High	High	Moderate	Major decline	Moderate
Decrease in emergence regime	Tolerant*	Not relevant	Not sensitive*	No change	High
Increase in water flow rate	Intermediate	High	Low	No change	Moderate
Decrease in water flow rate	Low	Very high	Very low	Minor decline	Moderate
Increase in temperature	Low	Very high	Very low	No change	Low
Decrease in temperature	Low	Very high	Very low	No change	Low
Increase in turbidity	Intermediate	High	Low	No change	Moderate
Decrease in turbidity	Tolerant*	Not relevant	Not sensitive*	No change	High
Increase in wave exposure	High	High	Moderate	Major decline	Moderate
Decrease in wave exposure	Not relevant	Not relevant	Not relevant	No change	High
Noise	Tolerant	Not relevant	Not sensitive	Not relevant	High
Visual Presence	Tolerant	Not relevant	Not sensitive	Not relevant	High
Abrasion & physical disturbance	High	High	Moderate	Major decline	High
Displacement	Intermediate	High	Low	Decline	High

Chemical Factors

Click factor name to view rationale	Intolerance	Recoverability	Sensitivity	Species Richness	Evidence / Confidence
Synthetic compound contamination	Intermediate	High	Low	Decline	Moderate
Heavy metal contamination	Low	Very high	Very low	Minor decline	Moderate
Hydrocarbon contamination	Intermediate	High	Low	Decline	Low
Radionuclide contamination	Insufficient information	Insufficient information	Insufficient information	Insufficient Information	High
Changes in nutrient levels	Low	Very high	Very low	No change	Low
Increase in salinity	High	High	Moderate	Rise	Moderate
Decrease in salinity	High	High	Moderate	Major decline	High
Changes in oxygenation	Intermediate	High	Low	Decline	Very low

Biological Factors

Click factor name to view rationale	Intolerance	Recoverability	Sensitivity	Species Richness	Evidence / Confidence
Introduction of microbial pathogens/parasites	Low	Very high	Very low		Low
Introduction of non-native species	High	High	Moderate	Decline	Very low
Extraction of this species	High	High	Moderate	Rise	Low
Extraction of other species	Not relevant	Not relevant	Not relevant	Not relevant	High

Species used to indicate biotope intolerance

Physical factors

	Ascidiella scabra Important structural	Asterias rubens Key structural	Balanus crenatus Key structural	Ceramium virgatum Important other	Clavelina lepadiformis Important other	Saccharina latissima Key structural	Mytilus edulis Important other	Pomatoceros triqueter Important other	Psammechinus miliaris Key functional
Substratum Loss	High	High	High	High	High	High	High	High	High
Smothering	Low	Low	High	Intermediate	High	High	Intermediate	High	High
Increase in suspended sediment	Low	Low	Low	Intermediate	Intermediate	Low	Low	Low	Low
Decrease in suspended sediment	Tolerant			Tolerant*			Low	Low
Desiccation	Intermediate	High	High	High	High	High	Low	Intermediate	High
Increase in emergence regime	Intermediate	Tolerant	High	Intermediate	High	Intermediate	Low	Intermediate	Low
Decrease in emergence regime	Tolerant*			Tolerant			Low	Tolerant*
Increase in water flow rate	Low	Intermediate	Low	Intermediate	Low	Low	Low	Tolerant*	Low
Decrease in water flow rate	Low			Tolerant			Low	Tolerant
Increase in temperature	Tolerant	High	High	Low	Intermediate	Intermediate	Low	Tolerant*	Low
Decrease in temperature	Tolerant	Low		Low			Low	Intermediate
Increase in turbidity	Tolerant	Low	Low	Tolerant	Tolerant	Low	Tolerant	Tolerant	Low
Decrease in turbidity	Tolerant*			Tolerant			Tolerant	Tolerant
Increase in wave exposure	Intermediate	Intermediate	Low	Intermediate	Intermediate	High	Intermediate	Low	Intermediate
Decrease in wave exposure	Tolerant*	Low		Tolerant			Intermediate	Tolerant
Noise	Tolerant	Tolerant	Tolerant	Tolerant	Tolerant	Tolerant	Tolerant*	Tolerant	Tolerant
Visual Presence	Tolerant	Tolerant	Tolerant	Tolerant	Tolerant	Tolerant	Tolerant*	Tolerant	Low
Abrasion & physical disturbance	High	Intermediate	Intermediate	High	High	Intermediate	Intermediate	Intermediate	Intermediate
Displacement	High	Low	High	High	High	Intermediate	Intermediate	Low	Tolerant

Chemical factors

	Ascidiella scabra Important structural	Asterias rubens Key structural	Balanus crenatus Key structural	Ceramium virgatum Important other	Clavelina lepadiformis Important other	Saccharina latissima Key structural	Mytilus edulis Important other	Pomatoceros triqueter Important other	Psammechinus miliaris Key functional
Synthetic compound contamination	Intermediate	Intermediate	High	High	Insufficient information	Low	Intermediate	Insufficient information	High
Heavy metal contamination	Insufficient information	Intermediate	Intermediate	Insufficient information	Tolerant	Intermediate	Intermediate	Insufficient information	Intermediate
Hydrocarbon contamination	Insufficient information	High	Low	High	Insufficient information	Low	Intermediate	Insufficient information	High
Radionuclide contamination	Insufficient information	Insufficient information	Insufficient information	Insufficient information	Insufficient information	Insufficient information	Insufficient information	Insufficient information	Insufficient information
Changes in nutrient levels	Insufficient information	Low	Intermediate	Tolerant*	Insufficient information	Intermediate	Intermediate	Insufficient information	Low
Increase in salinity	Tolerant	High	Low	Not relevant	Low	High	Low	Tolerant	Intermediate
Decrease in salinity	Intermediate			Low			Low	High
Changes in oxygenation	Low	High	High	Insufficient information	Low	Insufficient information	Low	Insufficient information	Intermediate

Biological factors

	Ascidiella scabra Important structural	Asterias rubens Key structural	Balanus crenatus Key structural	Ceramium virgatum Important other	Clavelina lepadiformis Important other	Saccharina latissima Key structural	Mytilus edulis Important other	Pomatoceros triqueter Important other	Psammechinus miliaris Key functional
Introduction of microbial pathogens/parasites	Insufficient information	Intermediate	Insufficient information	Insufficient information	Insufficient information	Intermediate	Intermediate	Insufficient information	Intermediate
Introduction of non-native species	Tolerant	Insufficient information	Insufficient information	Tolerant*	Tolerant	Insufficient information	Insufficient information	Tolerant	Tolerant
Extraction of this species	Not relevant	Not relevant	Not relevant	Not relevant	Not relevant	Intermediate	Intermediate	Not relevant	Intermediate
Extraction of other species	Not relevant	Low	Not relevant	Not relevant	Tolerant	Insufficient information	Low	Not relevant	Intermediate

Species used to indicate biotope recoverability

Physical factors

	Ascidiella scabra Important structural	Asterias rubens Key structural	Balanus crenatus Key structural	Ceramium virgatum Important other	Clavelina lepadiformis Important other	Saccharina latissima Key structural	Mytilus edulis Important other	Pomatoceros triqueter Important other	Psammechinus miliaris Key functional
Substratum Loss	Very high	High	High	Very high	Moderate	High	High	High	High
Smothering	Immediate	Very high	High	Very high	Moderate	High	High	High	High
Increase in suspended sediment	Immediate	High	High	Very high	High	High	Immediate	High	Very high
Decrease in suspended sediment	Not relevant			Not relevant			Immediate	High
Desiccation	Very high	High	High	Very high	Moderate	High	Immediate	High	High
Increase in emergence regime	Very high	Not relevant	High	Very high	Moderate	High	Very high	High	Low
Decrease in emergence regime	Not relevant			Not relevant			Very high	Not relevant
Increase in water flow rate	Immediate	High	Very high	Very high	Very high	High	Very high	Not relevant	Very high
Decrease in water flow rate	Immediate			Not relevant			Very high	Not relevant
Increase in temperature	Not relevant	High	High	Very high	High	High	Very high	Not relevant	Low
Decrease in temperature	Not relevant	High		Very high			Very high	High
Increase in turbidity	Not relevant	Very high	Very high	Not relevant	Not relevant	High	Not relevant	Not relevant	Very high
Decrease in turbidity	Not relevant			Not relevant			Not relevant	Not relevant
Increase in wave exposure	Very high	High	Very high	Very high	High	High	High	High	High
Decrease in wave exposure	Not relevant	High		Not relevant			High	Not relevant
Noise	Not relevant	Not relevant	Not relevant	Not relevant	Not relevant	Not relevant	Not relevant	Not relevant	Not relevant
Visual Presence	Not relevant	Not relevant	Not relevant	Not relevant	Not relevant	Not relevant	Not relevant	Not relevant	Very high
Abrasion & physical disturbance	Very high	High	High	Very high	Moderate	Very high	High	High	High
Displacement	Very high	Immediate	High	Very high	Moderate	High	High	High	Not relevant

Chemical factors

	Ascidiella scabra Important structural	Asterias rubens Key structural	Balanus crenatus Key structural	Ceramium virgatum Important other	Clavelina lepadiformis Important other	Saccharina latissima Key structural	Mytilus edulis Important other	Pomatoceros triqueter Important other	Psammechinus miliaris Key functional
Synthetic compound contamination	Very high	High	High	Very high	Not relevant	High	High	Not relevant	High
Heavy metal contamination	Not relevant	High	High	Not relevant	Not relevant	High	High	Not relevant	High
Hydrocarbon contamination	Not relevant	High	High	Very high	Not relevant	High	High	Not relevant	High
Radionuclide contamination	Not relevant	Insufficient information	Not relevant	Not relevant	Not relevant	Not relevant	Not relevant	Not relevant	Insufficient information
Changes in nutrient levels	Not relevant	High	High	Not relevant	Not relevant	High	High	Not relevant	Very high
Increase in salinity	Not relevant	High	Very high	Not relevant	Immediate	High	Very high	Not relevant	High
Decrease in salinity	Very high			Very high			Very high	High
Changes in oxygenation	Immediate	High	High	Not relevant	Immediate	Not relevant	Very high	Not relevant	High

Biological factors

	Ascidiella scabra Important structural	Asterias rubens Key structural	Balanus crenatus Key structural	Ceramium virgatum Important other	Clavelina lepadiformis Important other	Saccharina latissima Key structural	Mytilus edulis Important other	Pomatoceros triqueter Important other	Psammechinus miliaris Key functional
Introduction of microbial pathogens/parasites	Not relevant	High	Not relevant	Not relevant	Not relevant	High	High	Not relevant	High
Introduction of non-native species	Not relevant	Insufficient information	Not relevant	Very high	Not relevant	Not relevant	Not relevant	Not relevant	Not relevant
Extraction of this species	Not relevant	Not relevant	Not relevant	Not relevant	Not relevant	High	High	Not relevant	High
Extraction of other species	Not relevant	High	Not relevant	Not relevant	Not relevant	Not relevant	Very high	Not relevant	High

This review can be cited as follows:

Hiscock, K. 2002. Laminaria saccharina on reduced or low salinity infralittoral rock. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 22/05/2013]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=345&code=1997>

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Laminaria saccharina on reduced or low salinity infralittoral rock

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IR.SIR.K.LsacRS