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Biodiversity & Conservation
| Basic Information | Biotope classification | Ecology | Habitat preferences and distribution | Species composition | Sensitivity | Importance |
Barnacles and Littorina littorea on unstable eulittoral mixed substrata
LR.HLR.MusB.Sem.LitX
Image Paul Brazier - Boulder shore backed by low cliffs (SLR.Bllit) Image width ca 1m in foreground.
Image copyright information
LR.HLR.MusB.Sem.LitX 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 | High | High | Moderate | Minor decline | Moderate |
| Increase in suspended sediment | Low | Immediate | Not sensitive | No change | High |
| Decrease in suspended sediment | Low | Immediate | Not sensitive | No change | High |
| Desiccation | Low | High | Low | No change | Moderate |
| Increase in emergence regime | Low | High | Low | No change | Moderate |
| Decrease in emergence regime | Low | High | Low | No change | Moderate |
| Increase in water flow rate | Intermediate | Very high | Low | Minor decline | Moderate |
| Decrease in water flow rate | Low | Very high | Very low | Minor decline | Moderate |
| Increase in temperature | Low | Very high | Very low | No change | High |
| Decrease in temperature | Low | Very high | Very low | No change | High |
| Increase in turbidity | Tolerant | Not relevant | Not sensitive | No change | High |
| Decrease in turbidity | Tolerant | Not relevant | Not sensitive | No change | High |
| Increase in wave exposure | Intermediate | High | Low | Minor decline | High |
| Decrease in wave exposure | Not relevant | Not relevant | Not relevant | No change | High |
| 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 | Minor decline | Moderate |
| Displacement | High | High | Moderate | 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 | No change | Moderate |
| Hydrocarbon contamination | High | Moderate | Moderate | Decline | High |
| Radionuclide contamination | Insufficient information | Insufficient information | Insufficient information | Insufficient Information | Not relevant |
| Changes in nutrient levels | Low | Very high | Very low | No change | Moderate |
| Increase in salinity | Not relevant | Not relevant | Not relevant | Not relevant | Not relevant |
| Decrease in salinity | Low | Very high | Very low | No change | High |
| Changes in oxygenation | Low | Immediate | Not sensitive | No change | High |
Biological Factors
| Click factor name to view rationale | Intolerance | Recoverability | Sensitivity | Species Richness | Evidence / Confidence |
|---|---|---|---|---|---|
| Introduction of microbial pathogens/parasites | Low | High | Low | Moderate | |
| Introduction of non-native species | Low | High | Low | No change | Moderate |
| Extraction of this species | Intermediate | High | Low | Decline | Moderate |
| Extraction of other species | High | High | Moderate | Decline | High |
Species used to indicate biotope intolerance
Physical factors
| Littorina littorea Key functional | Semibalanus balanoides Important characterizing | Patella vulgata Key functional | |
| Substratum Loss | High | High | High |
| Smothering | High | Intermediate | High |
| Increase in suspended sediment | Intermediate | Low | Low |
| Decrease in suspended sediment | Low | ||
| Desiccation | Low | Intermediate | Low |
| Increase in emergence regime | Low | High | Low |
| Decrease in emergence regime | |||
| Increase in water flow rate | Intermediate | Low | Low |
| Decrease in water flow rate | |||
| Increase in temperature | Low | Intermediate | Low |
| Decrease in temperature | |||
| Increase in turbidity | Low | Low | Low |
| Decrease in turbidity | |||
| Increase in wave exposure | Intermediate | Low | Low |
| Decrease in wave exposure | |||
| Noise | Tolerant | Tolerant | Low |
| Visual Presence | Tolerant | Tolerant | Tolerant |
| Abrasion & physical disturbance | Intermediate | Intermediate | Low |
| Displacement | Tolerant | High | Intermediate |
Chemical factors
| Littorina littorea Key functional | Semibalanus balanoides Important characterizing | Patella vulgata Key functional |
|
| Synthetic compound contamination | Low | Intermediate | High |
| Heavy metal contamination | Intermediate | Low | Intermediate |
| Hydrocarbon contamination | High | Intermediate | High |
| Radionuclide contamination | Insufficient information | Insufficient information | Insufficient information |
| Changes in nutrient levels | Tolerant | Intermediate | Low |
| Increase in salinity | Tolerant | Low | Low |
| Decrease in salinity | |||
| Changes in oxygenation | Low | Intermediate | Intermediate |
Biological factors
| Littorina littorea Key functional | Semibalanus balanoides Important characterizing | Patella vulgata Key functional |
|
| Introduction of microbial pathogens/parasites | Insufficient information | Intermediate | Insufficient information |
| Introduction of non-native species | Insufficient information | Intermediate | Not relevant |
| Extraction of this species | Intermediate | Not relevant | Intermediate |
| Extraction of other species | Tolerant | Intermediate | Low |
Species used to indicate biotope recoverability
Physical factors
| Littorina littorea Key functional | Semibalanus balanoides Important characterizing | Patella vulgata Key functional | |
| Substratum Loss | High | High | High |
| Smothering | High | High | High |
| Increase in suspended sediment | High | Very high | High |
| Decrease in suspended sediment | High | ||
| Desiccation | Immediate | High | High |
| Increase in emergence regime | Immediate | High | High |
| Decrease in emergence regime | |||
| Increase in water flow rate | High | Very high | High |
| Decrease in water flow rate | |||
| Increase in temperature | Immediate | High | High |
| Decrease in temperature | |||
| Increase in turbidity | Very high | Very high | Very high |
| Decrease in turbidity | |||
| Increase in wave exposure | High | High | High |
| Decrease in wave exposure | |||
| Noise | Not relevant | Not relevant | High |
| Visual Presence | Not relevant | Not relevant | Not relevant |
| Abrasion & physical disturbance | High | High | Very high |
| Displacement | Not relevant | High | High |
Chemical factors
| Littorina littorea Key functional | Semibalanus balanoides Important characterizing | Patella vulgata Key functional |
|
| Synthetic compound contamination | Very high | Moderate | High |
| Heavy metal contamination | High | High | High |
| Hydrocarbon contamination | High | Moderate | High |
| Radionuclide contamination | Insufficient information | Not relevant | Insufficient information |
| Changes in nutrient levels | Not relevant | High | High |
| Increase in salinity | Not relevant | High | High |
| Decrease in salinity | |||
| Changes in oxygenation | Very high | High | High |
Biological factors
| Littorina littorea Key functional | Semibalanus balanoides Important characterizing | Patella vulgata Key functional |
|
| Introduction of microbial pathogens/parasites | Insufficient information | High | Insufficient information |
| Introduction of non-native species | Insufficient information | High | Not relevant |
| Extraction of this species | High | Not relevant | High |
| Extraction of other species | Not relevant | High | High |
This review can be cited as follows:
Hill, J.M. 2002. Barnacles and Littorina littorea on unstable eulittoral mixed substrata. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 26/05/2013]. Available from: <http://www.marlin.ac.uk/habitatsensitivity.php?habitatid=340&code=2004>
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