EUNIS habitat classification 2017 > M - Marine benthic habitats > MC6 - Circalittoral mud > MC62 - Atlantic circalittoral mud > MC621 - Faunal communities of Atlantic circalittoral mud > MC6212 - Thyasira spp. and Nuculoma tenuis in Atlantic circalittoral sandy mud

Thyasira spp. and Nuculoma tenuis in Atlantic circalittoral sandy mud

Description (English)

Circalittoral cohesive sandy muds with small quantities of gravel, off sheltered or moderately exposed coasts may support populations characterised by Thyasira spp. and in particular Thyasira flexuosa. Other characteristic taxa may include Nuculoma tenuis, Goniada maculate and in some areas Rhodine gracilior. Mysella bidentata, Abra alba, Harpinia antennaria and Amphiura filiformis may be abundant in some examples of this biotope. Whilst moderately diverse, animal abundances are often low and it is possible that the biotope is the result of sedimentary disturbance e.g. from trawling and is possibly an impoverished version of MC6-213. Collectively the biotopes MB6-248, MC6-212, MC6-213 and MD5-212, may form the Amphiura dominated components of the 'off-shore muddy sand association' described by other workers (Jones 1951; Thorson 1957; Mackie 1990) and the infralittoral etage described by Glemarec (1973).

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code MC6212
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 Abra alba
Invertebrates Amphiura filiformis
Invertebrates Harpinia antennaria
Invertebrates Mysella bidentata
Invertebrates Thyasira flexuosa
Species scientific name English common name Species group
Abra alba Invertebrates
Amphiura filiformis Invertebrates
Harpinia antennaria Invertebrates
Mysella bidentata Invertebrates
Thyasira flexuosa Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) A5.352 Thyasira spp. and Nuculoma tenuis in circalittoral sandy mud same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A5.352 Thyasira spp. and Nuculoma tenuis in circalittoral sandy mud same
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