Moerellaspp. with venerid bivalves in Atlantic infralittoral gravelly sand

Quick facts

EUNIS habitat type code MB3233
Relation to Resolution 4 habitat type (used for designation of Emerald sites)

Description (English)

Infralittoral medium to coarse sand and gravelly sand which is subject to moderately strong water movement from tidal streams may be characterised by Moerella spp. with the polychaete Glycera lapidum (agg.) and venerid bivalves. Typical species include Moerella pygmaea or M. donacina with other robust bivalves such as Dosinia lupinus, Timoclea ovata, Goodallia triangularis and Chamelea gallina. Other infauna include nephtyd and spionid polychaetes and amphipod crustacea. Another important component of this biotope in some areas is the bivalve Spisula solida (see K?hne & Rachnor 1996) which may be common or abundant. In conjunction with unit MB5-236 this biotope may form part of the 'Shallow Venus Community', the 'Boreal Off-shore Sand Association' and the ' Goniadella-Spisula association' of previous workers (see Petersen 1918; Jones 1951; Thorson 1957; Salzwedel, Rachor & Gerdes 1985). Epifaunal communities may be reduced in this biotope when compared to MB5-236; both types may have surface sand waves which may be indicative of the presence of venerid bivalves (Warwick & Davies 1977). This hypothesis, however, requires testing. Remote grab sampling is likely to under-estimate venerid bivalves and other deep-burrowing and more dispersed species such as Paphia, Ensis and Spatangus. In southern areas of the UK and the North Sea, in slightly siltier sand and shelly sand, MB3-233 may give way to the other Spisula biotope MB5-238.
Situation: This biotope is found on the exposed open coast and in estuaries with moderately strong tidal currents.

Source: EUNIS habitat classification

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Chamelea gallina
Invertebrates Dosinia lupinus
Invertebrates Glycera lapidum
Invertebrates Goodallia triangularis
Invertebrates Spisula solida
Invertebrates Timoclea ovata
Species scientific name English common name Species group
Chamelea gallina Invertebrates
Dosinia lupinus Invertebrates
Glycera lapidum Invertebrates
Goodallia triangularis Invertebrates
Spisula solida Invertebrates
Timoclea ovata Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) A5.133 Moerella spp. with venerid bivalves in infralittoral gravelly sand same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A5.123 Moerella spp. with venerid bivalves in infralittoral gravelly sand same
EUNIS Habitat Classification 200308 A4.112 Spisula elliptica and venerid bivalves in infralittoral clean sand or shell gravel wider
EUNIS Habitat Classification 200202 A4.112 Spisula elliptica and venerid bivalves in infralittoral clean sand or shell gravel overlap
EUNIS Habitat Classification 199910 A4.122 Spisula elliptica and venerid bivalves in infralittoral clean sand or shell gravel overlap
MNCR BioMar 97.06 (Britain & Ireland) IGS.FaG.Sell Spisula elliptica and venerid bivalves in infralittoral clean sand or shell gravel overlap
European Environment Agency (EEA)
Kongens Nytorv 6
1050 Copenhagen K
Denmark
Phone: +45 3336 7100