EUNIS habitat classification 2017 > M - Marine benthic habitats > MD6 - Offshore circalittoral mud > MD62 - Atlantic offshore circalittoral mud > MD621 - Faunal communities on Atlantic offshore circalittoral mud > MD6213 - Ampharete falcata turf with Parvicardium ovale on Atlantic offshore circalittoral muddy sediment near margins of deep stratified seas

Ampharete falcata turf with Parvicardium ovale on Atlantic offshore circalittoral muddy sediment near margins of deep stratified seas

Description (English)

Dense stands of Ampharete falcata tubes which protrude from muddy sediments, appearing as a turf or meadow in localised areas. These areas seem to occur on a crucial point on a depositional gradient between areas of tide-swept mobile sands and quiescent stratifying muds. Dense populations of the small bivalve Parvicardium ovale occur in the superficial sediment. Other infauna in this diverse biotope includes Lumbrineris scopa, Levinsenia sp., Prionospio steenstrupi, Diplocirrus glaucus and Praxillella affinis although a wide variety of other infaunal species may also be found. Both the brittlestars Amphiura filiformis and Amphiura chiajei may be present together with Nephrops norvegicus in higher abundance than the A5.363 or MB6-248 biotopes. Substantial populations of mobile epifauna such as Pandalus montagui and smaller fish also occur, together with those that can cling to the tubes, such as Macropodia spp. A similar turf of worm tubes formed by the maldanid polychaete Melinna cristata has been recorded from Northumberland (Buchanan 1963). Nephrops trawling may severely damage this biotope and it is possible that such activity has destroyed examples of this biotope in the Irish Sea (E.I.S. Rees pers. comm. 2002).

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code MD6213

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Ampharete falcata
Invertebrates Amphiura chiajei
Invertebrates Amphiura filiformis
Invertebrates Diplocirrus glaucus
Invertebrates Lumbrineris scopa
Invertebrates Melinna cristata
Invertebrates Nephrops norvegicus
Invertebrates Pandalus montagui
Invertebrates Parvicardium ovale
Invertebrates Praxillella affinis
Invertebrates Prionospio steenstrupi
Species scientific name English common name Species group
Ampharete falcata Invertebrates
Amphiura chiajei Invertebrates
Amphiura filiformis Invertebrates
Diplocirrus glaucus Invertebrates
Lumbrineris scopa Invertebrates
Melinna cristata Invertebrates
Nephrops norvegicus Invertebrates
Pandalus montagui Invertebrates
Parvicardium ovale Invertebrates
Praxillella affinis Invertebrates
Prionospio steenstrupi Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) A5.371 Ampharete falcata turf with Parvicardium ovale on cohesive muddy sediment near margins of deep stratified seas same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A5.371 Ampharete falcata turf with Parvicardium ovale on cohesive muddy sediment near margins of deep stratified seas same
EUNIS Habitat Classification 200308 A4.741 Ampharete falcata turf with Parvicardium ovale on cohesive muddy sediment near margins of deep stratified seas same
EUNIS Habitat Classification 200202 A4.741 Ampharete falcata turf with Parvicardium ovale on cohesive muddy very fine sand near margins of deep stratified seas same
EUNIS Habitat Classification 199910 A4.711 Ampharete falcata turf with Parvicardium ovale on cohesive muddy very fine sand near margins of deep stratified seas same
MNCR BioMar 97.06 (Britain & Ireland) COS.AmpPar Ampharete falcata turf with Parvicardium ovale on cohesive muddy very fine sand near margins of deep stratified seas same
European Environment Agency (EEA)
Kongens Nytorv 6
1050 Copenhagen K
Denmark
Phone: +45 3336 7100