Red List habitat classification > RL - Marine habitats > RLMED - Mediterranean > MEDA5.14 Communities of Mediterranean upper circalittoral coarse sediments

Communities of Mediterranean upper circalittoral coarse sediments

Quick facts

Red List habitat type code MEDA5.14
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 is characterized by tide-swept circalittoral coarse sand, gravel and shingle generally in depths of over 15-20 m. It may be found in tidal channels of marine inlets, along exposed coasts and offshore. As with shallower coarse sediments, it may be characterised by robust infaunal polychaetes, mobile crustacea and bivalves, and by a few ubiquitous robust and/or fast growing ephemeral species which are able to colonise pebbles and unstable cobbles and slates which are regularly moved by wave and tidal action. Bottom currents are moderate to strong.

Indicators of quality:

There are no commonly agreed indicators of quality for this habitat, thus both standard biotic and abiotic indicators may be used to describe marine habitat quality. In certain geographical areas this habitat may be under impact of fisheries activities, particularly trawling and dredging, thus the presence of characteristic commercially exploited species may indicate a quality of the habitat. Hence, presence and abundance of indicated characteristic species can also be used as an indicator of habitat quality.

Characteristic species
For full habitat description, please download the habitat factsheet.

Threat status

Synthesis of Red List assessment

This habitat has a large EOO and therefore qualifies as Least Concern under criterion B1. However the habitat is assessed as Data Deficient both at the EU 28 and EU 28+ levels because of the lack of information on trends in quantity and quality and the fact that its overall distribution and AOO is unknown.
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

  • Mining, extraction of materials and energy production
    • Sand and gravel extraction
  • Urbanisation, residential and commercial development
    • Discharges
  • Biological resource use other than agriculture & forestry
    • Marine and Freshwater Aquaculture
    • Fishing and harvesting aquatic resources
  • Pollution
    • Marine water pollution

Habitat restoration potential

The capacity of this habitat to recover after being severely damaged is unknown.

Trends in extent

Average current trend in quantity

Unknown Unknown
EU28 EU28+

Trends in quality

Average current trend in quality

Decreasing Decreasing
EU28 EU28+

Conservation and management needs

Beneficial measures include strengthening fisheries restrictions especially bottom trawling in a network of MPAs; decreasing the sources of eutrophication which would prevent further degradation of the habitat; and monitoring trends.

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
    • Legal protection of habitats and species
  • Measures related to hunting, taking and fishing and species management
    • Regulation/Management of fishery in marine and brackish systems
  • Measures related to urban areas, industry, energy and transport
    • Urban and industrial waste management

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)
Adriatic Sea Present Unknown Decreasing Unknown
Aegian-Levantine Sea
Ionian Sea and the Central Mediterranean Sea
Western Mediterranean Sea

Extent of Occurrence, Area of Occupancy and habitat area

Extent of Occurrence (EOO) (Km2) Area of Occupancy (AOO) Current estimated Total Area Comment
EU28 >50,000 Unknown Unknown There is insufficient quantitative data to make an accurate estimate of EOO and AOO.
EU28+ Unknown Unknown There is insufficient quantitative data to make an accurate estimate of 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 Anapagurus breviaculeatus
Invertebrates Armandia polyophthalma
Invertebrates Atrina pectinata
Invertebrates Dosinia exoleta
Invertebrates Glycymeris glycymeris
Invertebrates Laevicardium crassum
Invertebrates Lytocarpia myriophyllum
Invertebrates Ophiopsila annulosa
Invertebrates Spatangus purpureus
Invertebrates Thia scutellata
Invertebrates Venus casina
Species scientific name English common name Species group
Anapagurus breviaculeatus Invertebrates
Armandia polyophthalma Invertebrates
Atrina pectinata Invertebrates
Dosinia exoleta Invertebrates
Glycymeris glycymeris Invertebrates
Laevicardium crassum Invertebrates
Lytocarpia myriophyllum Invertebrates
Ophiopsila annulosa Invertebrates
Spatangus purpureus Invertebrates
Thia scutellata Invertebrates
Venus casina Invertebrates

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Other classifications

Not available
European Environment Agency (EEA)
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Denmark
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