Sheltered Pontic mediolittoral rock
Quick facts
| Red List habitat type | code BLSA1.3x |
|---|---|
| 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
The habitat is located at 0-0.5 m deep on soft rocks (such aschalk, marl and hard clay) into which habitat forming species can burrow. Empty burrows are often utilized by other invertebrate and fish species. This habitat occurs in sheltered situations.
Indicators of quality:
There are no commonly agreed indicators of quality for this habitat, although particular parameters may have been set in certain situations e.g. protected features within Natura 2000 sites, where reference values have been determined and applied on a location-specific basis.
Characteristic species
For full habitat description, please download the habitat factsheet.
Threat status
Synthesis of Red List assessment
Detailed information on the abundance and extent of this habitat is lacking this species is rare. Information on the quantity and quality of this habitat including historical or recent trends is unknown. This habitat has therefore been assessed as Data Deficient.
| EU | |
| Red List Category | Red List Criteria |
| Data Deficient | - |
| Europe | |
| Red List Category | Red List Criteria |
| Data Deficient | - |
Confidence in the assessment
low
Red List of habitat categories and criteria descriptions
Pressures and threats
- Urbanisation, residential and commercial development
- Other urbanisation, industrial and similar activities
- Pollution
- Nutrient enrichment (N, P, organic matter)
- Input of contaminants (synthetic substances, non-synthetic substances, radionuclides) - diffuse sources, point sources, acute events
- Climate change
- Changes in abiotic conditions
- Temperature changes (e.g. rise of temperature & extremes)
Habitat restoration potential
There is insufficient data and knowledge of this habitat to assess its capacity to recover
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
Pholas dactylus is protected species under the Bern Convention. It is also listed as threatened in the Red Data Book for Ukraine. In some localities (e.g. Crimea) the habitat is protected by protected areas. Controls on water quality are now present in the western Black Sea (e.g. WFD).
Adopting the following conservation and management actions will benefit the habitat in the future: such as the designation of additional protected areas, improvement of water quality controls for non EU states, installation of artificial reefs may provide habitat situations for recolonization.
Adopting the following conservation and management actions will benefit the habitat in the future: such as the designation of additional protected areas, improvement of water quality controls for non EU states, installation of artificial reefs may provide habitat situations for recolonization.
List of conservation and management needs
- Measures related to marine habitats
- Other marine-related measures
- Restoring marine habitats
- Measures related to spatial planning
- Establish protected areas/sites
Distribution
For each habitat a distribution map was produced from a wide variety of sources indicating known and potential occurrences of the habitat in 10x10 km grids within Europe. Occurrences in grid cells were given in two classes: actual distribution from relatively
reliable sources (surveys, expert knowledge), and potential distribution based on models or less reliable indicators. Please download the fact sheet to see the map.
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 |
Extent of Occurrence, Area of Occupancy and habitat area
| Extent of Occurrence (EOO) (Km2) | Area of Occupancy (AOO) | Current estimated Total Area | Comment | |
|---|---|---|---|---|
| EU28 | Unknown | Unknown | Unknown | The habitat is known to occur in the Black Sea but there is insufficient data to accurately calculate EOO and AOO. |
| EU28+ | Unknown | Unknown | The habitat is known to occur in the Black Sea but there is insufficient data to accurately calculate EOO and AOO. |
AOO = the area occupied by a habitat measured in number of 10x10 km grid cells.
EOO = the area (km2) of the envelope around all occurrences of a habitat (calculated by a minimum convex polygon).
EOO = the area (km2) of the envelope around all occurrences of a habitat (calculated by a minimum convex polygon).
Characteristic species
Not available
Legal status
Relation to other habitat types mentioned in legal instruments
Vegetation types
Relation to vegetation types (syntaxa)
Not availableOther classifications
Not available
