Red List habitat classification > RL - Marine habitats > RLBLS - Black Sea > BLSA2.2x Pontic mediolittoral sands

Pontic mediolittoral sands

Quick facts

Red List habitat type code BLSA2.2x
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 mediolittoral zone in areas of coarse, medium and fine sands. It is typically exposed, moderately exposed or sheltered from wave action.

The dominant environmental conditions which define the sediment characteristic and species composition are high levels of physical disturbance from wave action, wide temperature variability, and periods of desiccation. In the microtidal Black Sea (tidal range of about 0.3 m) this habitat is limited to narrow beach strip covered by the swash. 

Community composition depends on grain size and origin of sand (siliceous/calcareous, biogenic/abiogenic) with three associated biotopes distinguished. Diversity is usually low due to high physical disturbance from wave action but abundances may be high.

Indicators of quality:

Both biotic and abiotic indicators have been used to describe marine habitat quality. These include: the presence of characteristic species and those which are sensitive to the pressures the habitat may face; water quality parameters; levels of exposure to particular pressure as and more integrated indices which describe habitat structure and function, such as trophic index, or successional stages of development in habitats that have a natural cycle of change over time.

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. Information on the quantity and quality of this habitat including historical or recent trends is unknown. For the purposes of Red List assessment this habitat is considered to be 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
  • Human intrusions and disturbances
    • Other human intrusions and disturbances
    • Trampling, overuse
  • Pollution
    • Nutrient enrichment (N, P, organic matter)
  • Natural System modifications
    • Human induced changes in hydraulic conditions
    • Removal of sediments (mud...)
    • Extraction of sea-floor and subsoil minerals (e.g. sand, gravel, rock, oil, gas)

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

Conservation and management measures which would benefit this habitat include measures to maintain physical and biological integrity, including pollution control and regulation, improvement of water quality management, control and regulation of coastal development, contingency plans to be followed in the event of a major pollution incident, and survey and monitoring programmes.
Raised public awareness of ecological value and vulnerability of the habitat, enhanced legal protection for the habitat and key species (such as additions to the EU Habitats Directive), establishment of a unified list of Black Sea species and habitats requiring conservation measures), and designation or extension of MPAs which can provide an additional legal framework to support delivery of conservation objectives.

List of conservation and management needs

  • Measures related to marine habitats
    • Other marine-related measures
  • Measures related to spatial planning
    • Establish protected areas/sites
    • Legal protection of habitats and species
  • Measures related to urban areas, industry, energy and transport
    • Other measures

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 Donacilla cornea
Invertebrates Donax trunculus
Invertebrates Gastrosaccus sanctus
Invertebrates Hesionides arenaria
Invertebrates Ophelia bicornis
Invertebrates Pisione remota
Invertebrates Saccocirrus papillocercus
Species scientific name English common name Species group
Donacilla cornea Invertebrates
Donax trunculus Invertebrates
Gastrosaccus sanctus Invertebrates
Hesionides arenaria Invertebrates
Ophelia bicornis Invertebrates
Pisione remota Invertebrates
Saccocirrus papillocercus Invertebrates

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Other classifications

Not available
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