Red List habitat classification > RL - Marine habitats > RLNEA - Atlantic > NEAA2.42 Species-rich Atlantic littoral mixed sediment

Species-rich Atlantic littoral mixed sediment

Quick facts

Red List habitat type code NEAA2.42
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 characterised by sheltered mixed sediments, usually subject to variable salinity conditions. It is found on the mid- and lower shore and is an extension of a shallow sublittoral habitat. The infauna is very diverse, dominated by a range of polychaetes. 

Indicators of quality:

Both biotic and abiotic indicators have been used to describe marine habitat quality. These include: the presence of characteristic species as well as those which are sensitive to the pressures the habitat may face; water quality parameters; levels of exposure to particular pressure, 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

There is insufficient information to make an overall assessment of the distribution and trends in quality or quantity of this habitat over the last 50 years. This habitat is therefore assessed as Data Deficient for both the EU 28 and EU 28+.
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

  • Pollution
    • Marine water pollution
  • Invasive, other problematic species and genes
    • Invasive non-native species
  • Natural System modifications
    • Human induced changes in hydraulic conditions
    • Landfill, land reclamation and drying out, general
    • Removal of sediments (mud...)
    • Modification of hydrographic functioning, general
    • Siltation rate changes, dumping, depositing of dredged deposits
    • Dykes, embankments, artificial beaches, general
  • Climate change
    • Changes in abiotic conditions
    • Flooding and rising precipitations
    • Water flow changes (limnic, tidal and oceanic)
    • Wave exposure changes
    • Sea-level changes
    • Changes in biotic conditions
    • Habitat shifting and alteration

Habitat restoration potential

Unknown.

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

This habitat falls within some Marine Protected Areas. Integrated coastal zone management which includes spatial planning measures controlling land claim and other activities that may cause changes in hydrological conditions are examples of beneficial measures. Other management measures include the regulation of activities which damage or disturb shore communities, regulation of coastal developments and hard coastal defence structures, measures to reduce global warming and sea level rise; and controls on the potential introduction of invasive species.

List of conservation and management needs

  • Measures related to marine habitats
    • Other marine-related measures
  • Measures related to spatial planning
    • Other marine-related 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)
Celtic Seas Present Unknown Unknown Unknown
Greater North Sea
Bay of Biscay and the Iberian Coast
Kattegat
Macaronesia

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 Insufficient records for reliable estimate.
EU28+ Unknown Unknown Insufficient records for reliable estimate.
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 Abra alba
Invertebrates Aora gracilis
Invertebrates Aphelochaeta marioni
Invertebrates Capitella capitata
Invertebrates Cerastoderma edule
Invertebrates Chaetozone gibber
Invertebrates Cirriformia tentaculata
Invertebrates Corophium volutator
Invertebrates Elminius modestus
Invertebrates Exogone naidina
Invertebrates Mediomastus fragilis
Invertebrates Melinna palmata
Invertebrates Melita palmata
Invertebrates Microprotopus maculatus
Invertebrates Pygospio elegans
Invertebrates Sphaerosyllis taylori
Invertebrates Tubificoides benedii
Species scientific name English common name Species group
Abra alba Invertebrates
Aora gracilis Invertebrates
Aphelochaeta marioni Invertebrates
Capitella capitata Invertebrates
Cerastoderma edule Invertebrates
Chaetozone gibber Invertebrates
Cirriformia tentaculata Invertebrates
Corophium volutator Invertebrates
Elminius modestus Invertebrates
Exogone naidina Invertebrates
Mediomastus fragilis Invertebrates
Melinna palmata Invertebrates
Melita palmata Invertebrates
Microprotopus maculatus Invertebrates
Pygospio elegans Invertebrates
Sphaerosyllis taylori Invertebrates
Tubificoides benedii Invertebrates

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Other classifications

Not available
European Environment Agency (EEA)
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1050 Copenhagen K
Denmark
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