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Marine Habitat Classification


Description of biotope or habitat type

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   Psolus squamatus and encrusting sponge assemblage on Atlantic mid bathyal rock and other hard substrata


Habitat (physical) description

Salinity Full (30-35 ppt)
Wave exposure
Tidal streams
Substratum Rock and other hard substrata - cobble, boulder and bedrock
Zone Atlantic mid bathyal
Depth Band Biotope depth range 600 - 1300 m (based on zone); assemblage recorded from 500 - 1878 m; median 1198 m
Other Features

Download comparative physical and biological data. The comparative tables enable a rapid comparison of the species composition and principal physical characteristics between a given set of biotopes.

Distribution of habitat M.AtMB.Ro.SpaEnc.PsoSpo <i>Psolus squamatus</i> and encrusting sponge assemblage on Atlantic mid bathyal rock and other hard substrata

  • Records used to define the biotope (core records)
  • Other records assigned to this biotope, marked as 'certain'
  • Other records assigned to this biotope, marked as 'uncertain'
  • Predicted extent of the level 3 (for sublittoral rock & deep sea) or 4 (for sublittoral sediment) habitat

Point data based on records in the UK Marine Recorder Snapshot. Predicted habitat extent is from UKSeaMap.

Description

This assemblage occurs on cobble, boulder and bedrock areas with the holothurian Psolus being the most conspicuous faunal compenent and lamellate sponges also being present. A range of encrusting species are also present and are like to vary with depth and location. This assemblage also occurs in the upper bathyal. It is likely this biotope represents more than one assemblage but data are not sufficent to separate them. Characterising species listed refer to all Psolus squamatus and encrusting sponge assemblages not just those found associated with the zone and substrate specified in this biotope.

Situation

No situation data available.

Temporal variation

No temporal variation data available.

Characterising Species

Taxon
Porifera encrusting (pale - yellow, white, grey, cream, pink
Crinoidea sp 1.
Anomidae sp.1
Serpulidae
Phoronida sp.1
Ophiactis balli
Cidaris cidaris
Halcampoididae sp. 1
Porifera encrusting (orange)
Munida sarsi
Ophiuroidea
Porifera encrusting (green)
Psolus squamatus
Porifera massive globose
Caryophylliidae
Actiniaria
Ascidiacea
Syringammina fragillissima

Similar biotopes

M.AtUB.Ro.SpaEnc.PsoSpo
The same epifaunal assemblage in the upper bathyal.

M.AtUB.Ro.SpaEnc.PsoAno
Occurs in the upper bathyal. A range of encrusting species are also present but there is no conspicuous presence of lamellate sponges as there is within Psolus squamatus and encrusting sponge assemblage.

M.AtMB.Ro.SpaEnc.PsoAno
A range of encrusting species are also present but there is no conspicuous presence of lamellate sponges as there is within Psolus squamatus and encrusting sponge assemblage.

Photos

M.AtMB.Ro.SpaEnc.PsoSpo Psolus squamatus and encrusting sponge assemblage on Atlantic mid bathyal rock and other hard substrata, Anton Dohrn seamount. ANON © JNCC/University of Plymouth
M.AtMB.Ro.SpaEnc.PsoSpo Psolus squamatus and encrusting sponge assemblage on Atlantic mid bathyal rock and other hard substrata, Anton Dohrn seamount. ANON © JNCC/University of Plymouth

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