EUNIS habitat classification 2012 amended 2019 > A - Marine habitats > A5 - Sublittoral sediment > A5.3 - Sublittoral mud > A5.32 - Sublittoral mud in variable salinity (estuaries) > A5.325 - Capitella capitata and Tubificoides spp. in reduced salinity infralittoral muddy sediment

Capitella capitata and Tubificoides spp. in reduced salinity infralittoral muddy sediment

English name: Capitella capitata and Tubificoides spp. in reduced salinity infralittoral muddy sediment

Description (English)

Reduced or variable salinity muddy sediment characterised by the Capitella capitata species complex with a relatively low species richness. Large numbers of the oligochaetes Tubificoides spp. may be found in conjunction with C. capitata, along with other species such as Marenzellaria sp, Macoma balthica, Arenicola marina and Eteone longa. In some estuaries this biotope may also include high numbers of the polychaete Ophryotrocha. This biotope usually has a moderate organic content, and is found away from tidal channels in estuaries. The presence of dense Capitella has classically been associated with organically enriched and physically disturbed habitats in the marine environment (Warren 1977; Pearson & Rosenberg 1978) and areas of higher organic loads in estuaries will typically fall into unit A5.336. Where Capitella is less abundant and accompanied by other typical estuarine species the dominance of Capitella may be associated with other natural factors including the occurrence of a competitive refuge for C. capitata in the reduced-salinity environment (Wolff 1973).

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A5.325
Bern Convention Included in a Resolution 4 habitat type at a higher level (A5)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Arenicola marina
Invertebrates Capitella capitata
Invertebrates Eteone longa
Invertebrates Macoma balthica
Species scientific name English common name Species group
Arenicola marina Invertebrates
Capitella capitata Invertebrates
Eteone longa Invertebrates
Macoma balthica Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 SS.SMu.SMuVS.CapTubi <I>Capitella capitata</I> and <I>Tubificoides</I> spp. in reduced salinity infralittoral muddy sediment source
CORINE Land Cover 5.2.2. Estuaries n/a
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 200410 A5.325 Capitella capitata and Tubificoides spp. in reduced salinity infralittoral muddy sediment same
EUNIS Habitat Classification 200308 A4.324 Capitella capitata and Tubificoides spp. in reduced salinity infralittoral muddy sediment same
EUNIS Habitat Classification 200202 A4.324 Capitella capitata and Tubificoides spp. in reduced salinity infralittoral muddy sediment same
EUNIS Habitat Classification 199910 A4.324 Capitella capitata and Tubificoides spp. in reduced salinity infralittoral muddy sediment same
MNCR BioMar 97.06 (Britain & Ireland) IMU.EstMu.CapTub Capitella capitata and Tubificoides spp. in reduced salinity infralittoral muddy sediment same
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