EUNIS habitat classification 2017 > M - Marine benthic habitats > MG4 - Abyssal mixed sediment > MG42 - Atlantic abyssal mixed sediment

Atlantic abyssal mixed sediment

Description (English)

Deep-sea mixed sediment has not been sampled widely for infauna so little is currently known about infaunal community structure. Epifauna tend to be sparse mobile species. In the absence of ecological data, mixed sediment habitat can be defined according to Long (2006), which describes the classification's broad sediment types according to the relative proportion of mud, sand and gravel (see p3 of UKSeaMap 2010 technical report 3 It can be difficult to reliably distinguish between coarse sediment and mixed sediment using video data only. Note that mixed sediment has a greater mud content than coarse sediment. If muddy sand sediment contains a high enough percentage of gravel, then it would be classed as mixed sediment. Stable pebbles, cobbles and boulders are classed as rock; any rock present on mixed sediment is considered a separate habitat within a mosaic.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code MG42

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) A6.2 Deep-sea mixed substrata narrower
For relation to plant communities (syntaxa), see Vegetation types


Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A6.2 Deep-sea mixed substrata same
EUNIS Habitat Classification 200308 A5.2 Deep-sea mixed substrata same
EUNIS Habitat Classification 200202 A5.2 Deep-sea combination substrates same
EUNIS Habitat Classification 199910 A5.2 Bathyal zone mixed substrates same
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