Red List habitat classification > RL - Marine habitats > RLBLS - Black Sea > BLSA1.3x Sheltered Pontic mediolittoral rock

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.

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).

Characteristic species

The full list of characteristic species and genus are available above from the Summary. The species available in the EUNIS database are shown here.
Invertebrates Pholas dactylus
Species scientific name English common name Species group
Pholas dactylus Invertebrates

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Other classifications

Not available
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