EUNIS habitat classification 2017 > M - Marine benthic habitats > MB3 - Infralittoral coarse sediment > MB32 - Atlantic infralittoral coarse sediment > MB323 - Faunal communities in full salinity Atlantic infralittoral coarse sediment > MB3231 - Sparse fauna on highly mobile Atlantic infralittoral shingle (cobbles and pebbles)

Sparse fauna on highly mobile Atlantic infralittoral shingle (cobbles and pebbles)

Description (English)

Sublittoral clean shingle and pebble habitats with a lack of conspicuous fauna. Unstable, rounded pebbles and stones (as opposed to sub-angular cobbles, which are often found lying on or embedded in other sediment) that are strongly affected by tidal steams and/or wave action can support few animals and are consequently faunally impoverished. The species composition of this biotope may be highly variable seasonally and is likely to comprise of low numbers of robust polychaetes or bivalves with occasional epibiota including echinoderms and crustacea such as Liocarcinus spp. and Pagurus spp. In more settled periods there may be colonisation by anemones such as Urticina felina and small populations of hydroids and Bryozoa.
Situation: This biotope is found in marine inlets with very strong tidal currents as well as in very wave exposed open coast environments.
Temporal variation: The faunal composition of this biotope is likely to be highly variable as a result of seasonal changes in wave and tidal energy.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code MB3231
Relation to Resolution 4 habitat type (used for designation of Emerald sites)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Urticina felina
Species scientific name English common name Species group
Urticina felina Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) A5.131 Sparse fauna on highly mobile sublittoral shingle (cobbles and pebbles) same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A5.121 Sparse fauna on highly mobile sublittoral shingle (cobbles and pebbles) same
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