EUNIS habitat classification 2012 > A - Marine habitats > A2 - Littoral sediment > A2.2 - Littoral sand and muddy sand > A2.24 - Polychaete/bivalve-dominated muddy sand shores > A2.241 - Macoma balthica and Arenicola marina in muddy sand shores

Macoma balthica and Arenicola marina in muddy sand shores

English name: Macoma balthica and Arenicola marina in muddy sand shores

Description (English)

Muddy sand or fine sand, often occurring as extensive intertidal flats both on open coasts and in marine inlets. The sediment is often compacted, with a rippled surface, areas of standing water, and generally remains water-saturated during low water. Scattered stones, cobbles and boulders with attached fucoids may be present. An anoxic layer is usually present within 5cm of the sediment surface and is often visible in worm casts. The habitat may be subject to variable salinity conditions in marine inlets. The species assemblage is characterised by the lugworm Arenicola marina and the Baltic tellin Macoma balthica. The polychaetes Scoloplos armiger and Pygospio elegans are typically superabundant and common, respectively. Oligochaetes, probably mainly Tubificoides benedii and T. pseudogaster, may be common, and the cockle Cerastoderma edule may be abundant.
Situation: This unit has broad transition areas with units A2.242 and A2.243, which tends to occur lower down on the shore.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A2.241
Bern Convention Included in a Resolution 4 habitat type at a higher level (A2.2)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Arenicola marina
Invertebrates Cerastoderma edule
Invertebrates Macoma balthica
Invertebrates Pygospio elegans
Invertebrates Scoloplos armiger
Invertebrates Tubificoides benedii
Species scientific name English common name Species group
Arenicola marina Invertebrates
Cerastoderma edule Invertebrates
Macoma balthica Invertebrates
Pygospio elegans Invertebrates
Scoloplos armiger Invertebrates
Tubificoides benedii Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 LS.LSa.MuSa.MacAre <I>Macoma balthica</I> and <I>Arenicola marina</I> in littoral muddy sand source
CORINE Land Cover 4.2.3. Intertidal flats n/a
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 200410 A2.241 Macoma balthica and Arenicola marina in muddy sand shores same
EUNIS Habitat Classification 200202 A2.253 Macoma balthica and Arenicola marina in muddy sand shores same
EUNIS Habitat Classification 199910 A2.223 Macoma balthica and Arenicola marina in muddy sand shores same
MNCR BioMar 97.06 (Britain & Ireland) LMS.MS.MacAre Macoma balthica and Arenicola marina in muddy sand shores same
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