EUNIS habitat classification 2017 > M - Marine benthic habitats > MA6 - Littoral mud > MA62 - Atlantic littoral mud > MA622 - Faunal communities of variable salinity Atlantic littoral mud > MA6227 - Hediste diversicolor in Atlantic littoral mud > MA62272 - Hediste diversicolor and Corophium volutator in Atlantic littoral mud

Hediste diversicolor and Corophium volutator in Atlantic littoral mud

Description (English)

Sheltered estuarine shores of sandy mud, which may become firm and compacted if present in the upper shore where there is more time for drainage between high tides. An anoxic layer is usually present within the first 5 cm of the sediment. The infauna is very sparse, usually only the ragworm Hediste diversicolor and the amphipod Corophium volutator are present in any abundance. Occasionally, oligochaetes or the spire shell Hydrobia ulvae may be present. Corophium multisetosum may also be found. There may be organic pollution of the sediment.
Situation: This unit may occur on the same shores as units MA6-225, MA6-224, MA6-226, and MA6-2271. Higher up on the shore, and/or further towards the head of the estuary, MA6-2273 may occur, changing to MA6-228 at the upper extreme of the estuary.
Temporal variation: Enteromorpha spp. or Ulva lactuca may form mats on the surface of the sediment during the summer months, particularly in areas of freshwater influence and/or where there is nutrient enrichment.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code MA62272
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

Algae Ulva lactuca
Invertebrates Corophium multisetosum
Invertebrates Corophium volutator
Species scientific name English common name Species group
Ulva lactuca Algae
Corophium multisetosum Invertebrates
Corophium volutator Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) A2.3222 Hediste diversicolor and Corophium volutator in littoral mud same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A2.3222 Hediste diversicolor and Corophium volutator in littoral mud wider
EUNIS Habitat Classification 200410 A2.34 Corophium spp. in soft mud shores wider
EUNIS Habitat Classification 200308 A2.373 Hediste diversicolor and oligochaetes in low salinity mud shores overlap
EUNIS Habitat Classification 200202 A2.373 Hediste diversicolor and oligochaetes in low salinity mud shores overlap
EUNIS Habitat Classification 199910 A2.323 Hediste diversicolor and oligochaetes in low salinity mud shores overlap
MNCR BioMar 97.06 (Britain & Ireland) LMU.Mu.HedOl Hediste diversicolor and oligochaetes in low salinity mud shores overlap
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