Gracilechinus alexandri, Psilaster and Plinthaster assemblage on Atlantic lower bathyal 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 upper abyssal 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 MF6212 |
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Vegetation types
Relation to vegetation types (syntaxa)
Not availableSpecies mentioned in habitat description
Other classifications
Classification | Code | Habitat type name | Relationship type |
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EUNIS Habitat Classification 2007 (revised descriptions 2012) | A6.5 | Deep-sea mud | narrower |
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 |