Pontic supralittoral rock
Quick facts
Red List habitat type | code BLSA1.15 |
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Threat status | |
Europe | Data Deficient |
EU | Data Deficient |
Relation to |
|
Source | European Red List habitat factsheet |
European Red List of habitats reports | |
European Red List of habitats (Excel table) |
Summary
This habitat occurs in the rocky supralittoral zone (depth 0-5 m). It exists where the upper supralittoral rock is colonised by yellow lichens and cyanobacteria such as Lyngbia sp. and the lower supralittoral rock is colonised by encrusting black lichens, littorinids, isopods and barnacles. In locations of freshwater runoff and where nitrate levels are elevated the rock surfaces may be coated with green algae and a film of cyanobacteria.
Indicators of quality:
Species composition – presence of littorinid gastropod Melaraphe neritoides, isopod Ligia italica, barnacle Chthamalus stellatus as well as a high density of these species are indicative of a good quality habitat.
Threat status
Synthesis of Red List assessment
In the EU 28, this habitat has a restricted distribution however it is asssessed as Data Deficient because of the lack of information on trends in quantity and quality, and the fact that its overall distribution is unknown.
In the EU 28+ this habitat has a large EOO and AOO, and therefore qualifies as Least Concern under criterion B. However the habitat is assessed as Data Deficient because of the lack of information on its trends in quantity and quality.
EU | |
Red List Category | Red List Criteria |
Data Deficient | - |
Europe | |
Red List Category | Red List Criteria |
Data Deficient | - |
Confidence in the assessment
Pressures and threats
- Urbanisation, residential and commercial development
- Other urbanisation, industrial and similar activities
- Pollution
- Input of contaminants (synthetic substances, non-synthetic substances, radionuclides) - diffuse sources, point sources, acute events
- Oil spills in the sea
Habitat restoration potential
Trends in extent |
|
Average current trend in quantity |
|
Unknown ![]() |
Unknown ![]() |
EU28 | EU28+ |
Trends in quality |
|
Average current trend in quality |
|
Unknown ![]() |
Unknown ![]() |
EU28 | EU28+ |
Conservation and management needs
List of conservation and management needs
- Measures related to wetland, freshwater and coastal habitats
- Restoring/Improving water quality
- Measures related to spatial planning
- Establish protected areas/sites
- Measures related to urban areas, industry, energy and transport
- Urban and industrial waste management
Distribution
Geographic occurrence and trends
Seas | Present or presence uncertain | Current area of habitat (Km2) | Recent trend in quantity (last 50 years) | Recent trend in quality (last 50 years) |
---|---|---|---|---|
Black Sea | Present | Unknown | Unknown | Unknown |
Sea of Marmara |
Extent of Occurrence, Area of Occupancy and habitat area
Extent of Occurrence (EOO) (Km2) | Area of Occupancy (AOO) | Current estimated Total Area | Comment | |
---|---|---|---|---|
EU28 | 11,620 | 22 | Unknown | There is insufficient data to calculate the total area of this habitat |
EU28+ | >50 | Unknown | EOO and AOO have been calculated on the available data. Although this data set is known to be incomplete the figures exceed the thresholds for threatened status. |
EOO = the area (km2) of the envelope around all occurrences of a habitat (calculated by a minimum convex polygon).