EUNIS habitat classification 2012 amended 2019 > A - Marine habitats > A5 - Sublittoral sediment > A5.1 - Sublittoral coarse sediment > A5.15 - Deep circalittoral coarse sediment

Deep circalittoral coarse sediment

English name: Deep circalittoral coarse sediment

Description (English)

Offshore (deep) circalittoral habitats with coarse sands and gravel or shell. This habitat may cover large areas of the offshore continental shelf although there is relatively little quantitative data available. Such habitats are quite diverse compared to shallower versions of this habitat and generally characterised by robust infaunal polychaete and bivalve species. Animal communities in this habitat are closely related to offshore mixed sediments and in some areas settlement of Modiolus modiolus larvae may occur and consequently these habitats may occasionally have large numbers of juvenile M. modiolus. In areas where the mussels reach maturity their byssus threads bind the sediment together, increasing stability and allowing an increased deposition of silt leading to the development of the biotope A5.622.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A5.15
Bern Convention Included in a Resolution 4 habitat type at a higher level (A5)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Modiolus modiolus
Species scientific name English common name Species group
Modiolus modiolus Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 SS.SCS.OCS Offshore circalittoral coarse sediment source
CORINE Land Cover 5.2.3. Sea and ocean n/a
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 200410 A5.14 Deep circalittoral coarse sediment same
EUNIS Habitat Classification 200308 A4.14 Animals communities in deeper coarse sands narrower
EUNIS Habitat Classification 200308 A4.73 Animal communities of deep circalittoral shell gravel bottoms narrower
EUNIS Habitat Classification 200308 A4.71 Animal communities of deep circalittoral gravel bottoms narrower
EUNIS Habitat Classification 200202 A4.71 Animal communities of deep circalittoral gravel bottoms narrower
EUNIS Habitat Classification 200202 A4.14 Animals communities in deeper coarse sands narrower
EUNIS Habitat Classification 200202 A4.73 Animal communities of deep circalittoral shell gravel bottoms narrower
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