EUNIS habitat classification 2017 > M - Marine benthic habitats > MG6 - Abyssal mud > MG62 - Atlantic abyssal mud > MG621 - Sparse communities on Atlantic abyssal mud > MG6213 - Gracilechinus alexandri, Psilaster and Plinthaster assemblage on Atlantic abyssal mud

Gracilechinus alexandri, Psilaster and Plinthaster assemblage on Atlantic abyssal mud

Description (English)

This biotope consists of urchin Gracilechinus alexandri with seastars on mud substrate. Gage (1986) describes an assemblage from the continental slope west of the Hebrides (Rockall Trough) between 1400 and 2500m on pelagic ooze and terbidite dominated by echinoderms. The same epifaunal assemblage is also found in the lower bathyal but associated infauna are likely to differ. Characterising species listed refer to all Gracilechinus alexandri, Psilaster and Plinthaster 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 MG6213

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) A6.5 Deep-sea mud narrower
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A6.5 Deep-sea mud same
EUNIS Habitat Classification 200308 A5.5 Deep-sea muds same
EUNIS Habitat Classification 200202 A5.5 Deep-sea muds same
EUNIS Habitat Classification 199910 A5.5 Bathyal zone mud same
EUNIS Habitat Classification 199811 A5.3 Bathyal zone mud (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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