Biodiversity & Conservation

Sensitivity

Importance

Barnacles and fucoids (moderately exposed shores)

LR.MLR.BF

LR.MLR.BF 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	High
Increase in suspended sediment	Low	High	Low	Minor decline	Moderate
Decrease in suspended sediment
Desiccation	Intermediate	High	Low	Decline	Moderate
Increase in emergence regime	Intermediate	High	Low	Decline	High
Decrease in emergence regime
Increase in water flow rate	Intermediate	High	Low	No change	Moderate
Decrease in water flow rate
Increase in temperature	Intermediate	High	Low	Minor decline	Moderate
Decrease in temperature
Increase in turbidity	Low	High	Low	No change	Moderate
Decrease in turbidity
Increase in wave exposure	High	High	Moderate	Decline	High
Decrease in wave exposure
Noise	Tolerant	Not relevant	Not sensitive	No change	Very low
Visual Presence	Tolerant	Not relevant	Not sensitive	Not relevant	Very low
Abrasion & physical disturbance	High	High	Moderate	Decline	Moderate
Displacement	High	High	Moderate	Major decline	Very 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	Low	High	Low	Decline	Very low
Hydrocarbon contamination	Intermediate	High	Low	Major decline	Moderate
Radionuclide contamination	Insufficient information	Insufficient information	Insufficient information	Insufficient Information	Not relevant
Changes in nutrient levels	Intermediate	High	Low	Decline	Low
Increase in salinity	Low	High	Low	Minor decline	Low
Decrease in salinity
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	Intermediate	High	Low		Very low
Introduction of non-native species	Low	High	Low	No change	Low
Extraction of this species	Intermediate	High	Low	Decline	Low
Extraction of other species	Intermediate	High	Low	No change	Very low

Species used to indicate biotope intolerance

Physical factors

	Fucus serratus Key structural	Ascophyllum nodosum Key structural	Semibalanus balanoides Key structural	Patella vulgata Key functional
Substratum Loss	High	High	High	High
Smothering	High	High	Intermediate	High
Increase in suspended sediment	Low	Low	Low	Low
Decrease in suspended sediment				Low
Desiccation	Intermediate	Intermediate	Intermediate	Low
Increase in emergence regime	Intermediate	High	High	Low
Decrease in emergence regime
Increase in water flow rate	Intermediate	Intermediate	Low	Low
Decrease in water flow rate
Increase in temperature	Tolerant	Low	Intermediate	Low
Decrease in temperature
Increase in turbidity	Low	Low	Low	Low
Decrease in turbidity
Increase in wave exposure	High	High	Low	Low
Decrease in wave exposure
Noise	Tolerant	Tolerant	Tolerant	Low
Visual Presence	Tolerant	Tolerant	Tolerant	Tolerant
Abrasion & physical disturbance	Intermediate	High	Intermediate	Low
Displacement	High	High	High	Intermediate

Chemical factors

	Fucus serratus Key structural	Ascophyllum nodosum Key structural	Semibalanus balanoides Key structural	Patella vulgata Key functional
Synthetic compound contamination	High	Intermediate	Intermediate	High
Heavy metal contamination	Low	Low	Low	Intermediate
Hydrocarbon contamination	Intermediate	Low	Intermediate	High
Radionuclide contamination	Insufficient information	Insufficient information	Insufficient information	Insufficient information
Changes in nutrient levels	Intermediate	Intermediate	Intermediate	Low
Increase in salinity	Low	Low	Low	Low
Decrease in salinity
Changes in oxygenation	Low	Insufficient information	Intermediate	Intermediate

Biological factors

	Fucus serratus Key structural	Ascophyllum nodosum Key structural	Semibalanus balanoides Key structural	Patella vulgata Key functional
Introduction of microbial pathogens/parasites	Insufficient information	Insufficient information	Intermediate	Insufficient information
Introduction of non-native species	Insufficient information	Insufficient information	Intermediate	Not relevant
Extraction of this species	Intermediate	Intermediate	Not relevant	Intermediate
Extraction of other species	Tolerant	Tolerant	Intermediate	Low

Species used to indicate biotope recoverability

Physical factors

	Fucus serratus Key structural	Ascophyllum nodosum Key structural	Semibalanus balanoides Key structural	Patella vulgata Key functional
Substratum Loss	High	Low	High	High
Smothering	High	Low	High	High
Increase in suspended sediment	Very high	Immediate	Very high	High
Decrease in suspended sediment				High
Desiccation	High	Moderate	High	High
Increase in emergence regime	High	Low	High	High
Decrease in emergence regime
Increase in water flow rate	High	Low	Very high	High
Decrease in water flow rate
Increase in temperature	Not relevant	Moderate	High	High
Decrease in temperature
Increase in turbidity	Very high	Immediate	Very high	Very high
Decrease in turbidity
Increase in wave exposure	High	Low	High	High
Decrease in wave exposure
Noise	Not relevant	Not relevant	Not relevant	High
Visual Presence	Not relevant	Not relevant	Not relevant	Not relevant
Abrasion & physical disturbance	High	Low	High	Very high
Displacement	High	Low	High	High

Chemical factors

	Fucus serratus Key structural	Ascophyllum nodosum Key structural	Semibalanus balanoides Key structural	Patella vulgata Key functional
Synthetic compound contamination	High	Low	Moderate	High
Heavy metal contamination	High	High	High	High
Hydrocarbon contamination	High	Moderate	Moderate	High
Radionuclide contamination	Insufficient information	Insufficient information	Not relevant	Insufficient information
Changes in nutrient levels	High	High	High	High
Increase in salinity	Very high	High	High	High
Decrease in salinity
Changes in oxygenation	Very high	Insufficient information	High	High

Biological factors

	Fucus serratus Key structural	Ascophyllum nodosum Key structural	Semibalanus balanoides Key structural	Patella vulgata Key functional
Introduction of microbial pathogens/parasites	Insufficient information	Not relevant	High	Insufficient information
Introduction of non-native species	Insufficient information	Not relevant	High	Not relevant
Extraction of this species	High	Low	Not relevant	High
Extraction of other species	Not relevant	Not relevant	High	High

This review can be cited as follows:

Hill, J.M. 2000. Barnacles and fucoids (moderately exposed shores). Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 20/06/2013]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=33&code=2004>

for
Barnacles and fucoids (moderately exposed shores)

for
LR.MLR.BF