Concept: Deep circalittoral coarse sediment in the eunishabitats vocabulary

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Concept URI	http://eunis.eea.europa.eu/eunishabitats/A5.15
Preferred label	Deep circalittoral coarse sediment
Definition	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.
Notation	A5.15
Status	Valid
Status Modified	2014-01-31
Accepted Date	2014-01-31
Not Accepted Date
Has broader	A5.1 (Sublittoral coarse sediment) in biodiversity/eunishabitats
Has narrower	A5.151 ([Glycera lapidum], [Thyasira] spp. and [Amythasides macroglossus] in offshore gravelly sand) in biodiversity/eunishabitats A5.152 ([Hesionura elongata] and [Protodorvillea kefersteini] in offshore coarse sand) in biodiversity/eunishabitats A5.153 (Pontic offshore shell gravel in strong currents) in biodiversity/eunishabitats A5.154 (Pontic very deep Wurmian shell gravel of the shelf margin) in biodiversity/eunishabitats
Has exact match	http://eunis.eea.europa.eu/habitats/5424