Eunicella verrucosa and Pentapora foliacea on wave-exposed circalittoral rock

English name: Eunicella verrucosa and Pentapora foliacea on wave-exposed circalittoral rock

Quick facts

EUNIS habitat type code A4.1311
Bern Convention Included in a Resolution 4 habitat type at a higher level (A4)

Description (English)

This variant typically occurs on wave-exposed, steep, circalittoral bedrock, boulder slopes and outcrops, subject to varying tidal streams. This silty variant contains a diverse faunal community, dominated by the seafan Eunicella verrucosa, the bryozoan Pentapora foliacea and the cup coral Caryophyllia smithii. There are frequently numerous Alcyonium digitatum, and these may become locally abundant under more tide-swept conditions. Alcyonium glomeratum may also be present. A diverse sponge community is usually present, including numerous erect sponges; species present include Cliona celata, Raspailia ramosa, Raspailia hispida, Axinella dissimilis, Stelligera stuposa, Dysidea fragilis and Polymastia boletiformis. Homaxinella subdola may be present in the south west. A hydroid/bryozoan turf may develop in the understorey of this rich sponge assemblage, with species such as Nemertesia antennina, Nemertesia ramosa, crisiids, Alcyonidium diaphanum and Bugula plumosa. The sea cucumber Holothuria forskali may be locally abundant, feeding on the silty deposits on the rock surface. Other echinoderms encountered include the starfish Marthasterias glacialis and the urchin Echinus esculentus. Other fauna includes aggregations of colonial ascidians Clavelina lepadiformis and Stolonica socialis. Anemones such as Actinothoe sphyrodeta and Parazoanthus axinellae may be seen dotted across the rock surface. This biotope is present in south west England and Wales.
Situation: This biotope is commonly found on rocky outcrops, surrounded by coarse sediment. This may be in the form of shelly gravel or muddy gravel, supporting Urticina felina, Cerianthus lloydi and Neopentadactyla mixta. Above A4.1311, dense kelp forest containing Saccorhiza polyschides is usually found.

Source: EUNIS habitat classification

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Saccorhiza polyschides
Invertebrates Actinothoe sphyrodeta
Invertebrates Alcyonidium diaphanum
Invertebrates Alcyonium digitatum
Invertebrates Axinella dissimilis
Invertebrates Bugula plumosa
Invertebrates Caryophyllia smithii
Invertebrates Cerianthus lloydi
Invertebrates Clavelina lepadiformis
Invertebrates Cliona celata
Invertebrates Dysidea fragilis
Invertebrates Echinus esculentus
Invertebrates Eunicella verrucosa
Invertebrates Holothuria forskali
Invertebrates Marthasterias glacialis
Invertebrates Nemertesia antennina
Invertebrates Nemertesia ramosa
Invertebrates Neopentadactyla mixta
Invertebrates Parazoanthus axinellae
Invertebrates Polymastia boletiformis
Invertebrates Raspailia hispida
Invertebrates Raspailia ramosa
Invertebrates Stelligera stuposa
Invertebrates Stolonica socialis
Invertebrates Urticina felina
Species scientific name English common name Species group
Saccorhiza polyschides Algae
Actinothoe sphyrodeta Invertebrates
Alcyonidium diaphanum Invertebrates
Alcyonium digitatum Invertebrates
Axinella dissimilis Invertebrates
Bugula plumosa Invertebrates
Caryophyllia smithii Invertebrates
Cerianthus lloydi Invertebrates
Clavelina lepadiformis Invertebrates
Cliona celata Invertebrates
Dysidea fragilis Invertebrates
Echinus esculentus Invertebrates
Eunicella verrucosa Invertebrates
Holothuria forskali Invertebrates
Marthasterias glacialis Invertebrates
Nemertesia antennina Invertebrates
Nemertesia ramosa Invertebrates
Neopentadactyla mixta Invertebrates
Parazoanthus axinellae Invertebrates
Polymastia boletiformis Invertebrates
Raspailia hispida Invertebrates
Raspailia ramosa Invertebrates
Stelligera stuposa Invertebrates
Stolonica socialis Invertebrates
Urticina felina Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 CR.HCR.XFa.ByErSp.Eun <I>Eunicella verrucosa</I> and <I>Pentapora foliacea</I> on wave-exposed circalittoral rock source
CORINE Land Cover 5.2.3. Sea and ocean n/a
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 200410 A4.1311 Eunicella verrucosa and Pentapora foliacea on wave-exposed circalittoral rock same
EUNIS Habitat Classification 200308 A3.612 Eunicella verrucosa and Pentapora foliacea on wave-exposed circalittoral rock same
EUNIS Habitat Classification 200202 A3.612 Erect sponges, Eunicella verrucosa and Pentapora foliacea on slightly tide-swept moderately exposed circalittoral rock same
EUNIS Habitat Classification 199910 A3.612 Erect sponges, Eunicella verrucosa and Pentapora foliacea on slightly tide-swept moderately exposed circalittoral rock same
MNCR BioMar 97.06 (Britain & Ireland) MCR.XFa.ErSEun Erect sponges, Eunicella verrucosa and Pentapora foliacea on slightly tide-swept moderately exposed circalittoral rock same
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