EUNIS habitat classification 2017 > M - Marine benthic habitats > ME5 - Upper Bathyal sand > ME52 - Atlantic upper bathyal sand > ME521 - Sparse communities on Atlantic upper bathyal sand > ME5213 - Gracilechinus acutus norvegicus assemblage on Atlantic upper bathyal sand

Gracilechinus acutus norvegicus assemblage on Atlantic upper bathyal sand

Description (English)

This biotope consists of aggregations of Gracilechinus acutus norvegicus (previously Echinus acutus norvegicus) on sand substrate. The same epifaunal assemblage is also found on mud and sand in the mid and lower bathyal but associated infauna are likely to differ. Gage (1986) reports this assemblage from 700-1400m on pelagic ooze and suggests it is present in a ribbon-like distribution around the continental margin of Europe down to about 1400m. Le Danois also describes this assemblage from 150m-500+ but emphasises that shallower than 500m Spatangus raschi dominates and below Gracilechinus acutus norvegicus dominates. Characterising species listed refer to all Gracilechinus acutus norvegicus assemblages not just those found associated with the zone and substrate specified in this biotope.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code ME5213

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Not available

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) A6.3 Deep-sea sand narrower
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A6.3 Deep-sea sand same
EUNIS Habitat Classification 200308 A5.3 Deep-sea sand same
EUNIS Habitat Classification 200202 A5.3 Deep-sea sand substrates same
EUNIS Habitat Classification 199910 A5.3 Bathyal zone sand same
EUNIS Habitat Classification 199811 A5.2 Bathyal zone sand (continental slope floor) same
Palaearctic Habitat Classification 199905 11.211 Bathyal benthic communities wider
Palaearctic Habitat Classification 1997 11.211 Bathyal benthic communities wider
Palaearctic Habitat Classification 1996 11.211   wider
Palaearctic Habitat Classification 1993 11.211   wider
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