EUNIS habitat classification 2017 > M - Marine benthic habitats > MB6 - Infralittoral mud > MB62 - Atlantic infralittoral mud > MB625 - Faunal communities on variable or reduced salinity Atlantic sublittoral mud > MB6255 - Capitella capitata and Tubificoide sspp. in reduced salinity Atlantic infralittoral muddy sediment

Capitella capitata and Tubificoide sspp. in reduced salinity Atlantic 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, Limecola balthica (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 MB6-246. 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 MB6255
Relation to Resolution 4 habitat type (used for designation of Emerald sites)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Capitella capitata
Invertebrates Macoma balthica
Species scientific name English common name Species group
Capitella capitata Invertebrates
Macoma balthica Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) A5.325 Capitella capitata and Tubificoides spp. in reduced salinity infralittoral muddy sediment same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
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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