Cushion sponges and hydroids on turbid tide-swept sheltered circalittoral rock

English name: Cushion sponges and hydroids on turbid tide-swept sheltered circalittoral rock

Description (English)

This biotope is found in variable salinity environments and tends to occur on the upper faces of circalittoral bedrock and boulders, in sheltered sites subject to moderately strong tidal streams. This biotope is characterised by aggregations of cushion sponges such as Hymeniacidon perleve, Halichondria panicea, Halichondria bowerbanki and Cliona celata, other sponges (Leucosolenia botryoides and Suberites ficus) along with occasional hydroid tufts of Nemertesia antennina, Nemertesia ramosa and Plumularia setacea. Other species that may be present include the colonial ascidians Clavelina lepadiformis and Morchellium argus, Dendrodoa grossularia, the anemones Metridium senile and Sagartia troglodytes, the barnacle Balanus crenatus, Asterias rubens, Carcinus maenas and Bugula plumosa. Two variants of this biotope have been recorded: units A4.2511 and A4.2512.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A4.251
Bern Convention Included in a Resolution 4 habitat type at a higher level (A4)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Asterias rubens
Invertebrates Balanus crenatus
Invertebrates Bugula plumosa
Invertebrates Carcinus maenas
Invertebrates Clavelina lepadiformis
Invertebrates Cliona celata
Invertebrates Dendrodoa grossularia
Invertebrates Halichondria bowerbanki
Invertebrates Halichondria panicea
Invertebrates Leucosolenia botryoides
Invertebrates Metridium senile
Invertebrates Nemertesia antennina
Invertebrates Nemertesia ramosa
Invertebrates Plumularia setacea
Invertebrates Sagartia troglodytes
Invertebrates Suberites ficus
Species scientific name English common name Species group
Asterias rubens Invertebrates
Balanus crenatus Invertebrates
Bugula plumosa Invertebrates
Carcinus maenas Invertebrates
Clavelina lepadiformis Invertebrates
Cliona celata Invertebrates
Dendrodoa grossularia Invertebrates
Halichondria bowerbanki Invertebrates
Halichondria panicea Invertebrates
Leucosolenia botryoides Invertebrates
Metridium senile Invertebrates
Nemertesia antennina Invertebrates
Nemertesia ramosa Invertebrates
Plumularia setacea Invertebrates
Sagartia troglodytes Invertebrates
Suberites ficus Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 CR.MCR.CFaVS.CuSpH Cushion sponges and hydroids on turbid tide-swept sheltered 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 A4.251 Cushion sponges and hydroids on turbid tide-swept sheltered circalittoral rock same
EUNIS Habitat Classification 200308 A3.534 Cushion sponges, hydroids and ascidians on very tide-swept sheltered circalittoral rock same
EUNIS Habitat Classification 200202 A3.534 Cushion sponges, hydroids and ascidians on very tide-swept sheltered circalittoral rock same
EUNIS Habitat Classification 199910 A3.534 Cushion sponges, hydroids and ascidians on very tide-swept sheltered circalittoral rock same
MNCR BioMar 97.06 (Britain & Ireland) ECR.BS.CuSH Cushion sponges, hydroids and ascidians on very tide-swept sheltered circalittoral rock same
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