EUNIS habitat classification 2017 > M - Marine benthic habitats > MG6 - Abyssal mud > MG62 - Atlantic abyssal mud > MG621 - Sparse communities on Atlantic abyssal mud > MG6212 - Psycropotes longicauda and Oneirophanta mutabilis assemblage on Atlantic abyssal mud

Psycropotes longicauda and Oneirophanta mutabilis assemblage on Atlantic abyssal mud

Description (English)

This biotope consists of assemblages dominated by holothurians Psycropotes longicauda and Oneirophanta mutabilison mud. Lavaleye et al. (2002) describe this assemblage from their two deepest stations at 3650 and 4500m at the base of the Pendragon Escarpment, presumably on pelagic ooze. Billett et al. (2001) describe holothurians as dominating the megafaunal biomass at approximately 5000m on the Porcupine Abyssal Plain and cite Psychropotes longicauda and Oneirophanta mutabilis, together with Pseudostichopus villosusas contributing substantially to the total holothurian biomass. This assemblage was described based on literature only.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code MG6212

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Oneirophanta mutabilis
Invertebrates Pseudostichopus villosus
Invertebrates Psychropotes longicauda
Species scientific name English common name Species group
Oneirophanta mutabilis Invertebrates
Pseudostichopus villosus Invertebrates
Psychropotes longicauda Invertebrates

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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