Neocrania anomala and Protanthea simplex on sheltered circalittoral rock

English name: Neocrania anomala and Protanthea simplex on sheltered circalittoral rock

Description (English)

This biotope typically occurs in full to variable salinity conditions on very wave-sheltered circalittoral bedrock and boulder slopes subject to negligible tidal streams (this tends to be in the landward, very sheltered basins of fjordic sealochs). This biotope is characterised by often dense populations of the anemone Protanthea simplex, growing on the silty bedrock. The underlying rock surfaces are usually covered by encrusting red algae, the polychaete Pomatoceros triqueter, the brachiopods Neocrania anomala and Terebratulina retusa, the saddle oyster Pododesmus patelliformis and the polychaete Sabella pavonina. Scattered colonies of Alcyonium digitatum and the hydroid Bougainvillia ramosa may occasionally be recorded. A diverse range of ascidians including Ciona intestinalis, Ascidia mentula, Corella parallelogramma, Ascidia virginea, Polycarpa pomaria and Dendrodoa grossularia are also occasionally recorded. Echinoderms such as the common brittlestar Ophiothrix fragilis are frequently reported with their arms protruding from crevices in the rock, whilst the starfish Asterias rubens, Henricia oculata, and the sea urchin Echinus esculentus and Psammechinus miliaris are occasionally found on the boulder/rock surface. The whelk Buccinum undatum is often present but in very low numbers. The squat lobster Munida rugosa may be seen hiding in crevices. The hermit crab Pagurus bernhardus may also be recorded.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A4.314
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 Alcyonium digitatum
Invertebrates Ascidia mentula
Invertebrates Ascidia virginea
Invertebrates Asterias rubens
Invertebrates Bougainvillia ramosa
Invertebrates Buccinum undatum
Invertebrates Ciona intestinalis
Invertebrates Corella parallelogramma
Invertebrates Dendrodoa grossularia
Invertebrates Echinus esculentus
Invertebrates Henricia oculata
Invertebrates Munida rugosa
Invertebrates Neocrania anomala
Invertebrates Ophiothrix fragilis
Invertebrates Pagurus bernhardus
Invertebrates Pododesmus patelliformis
Invertebrates Polycarpa pomaria
Invertebrates Pomatoceros triqueter
Invertebrates Protanthea simplex
Invertebrates Psammechinus miliaris
Invertebrates Sabella pavonina
Invertebrates Terebratulina retusa
Species scientific name English common name Species group
Alcyonium digitatum Invertebrates
Ascidia mentula Invertebrates
Ascidia virginea Invertebrates
Asterias rubens Invertebrates
Bougainvillia ramosa Invertebrates
Buccinum undatum Invertebrates
Ciona intestinalis Invertebrates
Corella parallelogramma Invertebrates
Dendrodoa grossularia Invertebrates
Echinus esculentus Invertebrates
Henricia oculata Invertebrates
Munida rugosa Invertebrates
Neocrania anomala Invertebrates
Ophiothrix fragilis Invertebrates
Pagurus bernhardus Invertebrates
Pododesmus patelliformis Invertebrates
Polycarpa pomaria Invertebrates
Pomatoceros triqueter Invertebrates
Protanthea simplex Invertebrates
Psammechinus miliaris Invertebrates
Sabella pavonina Invertebrates
Terebratulina retusa Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 CR.LCR.BrAs.NeoPro <I>Neocrania anomala</I> and <I>Protanthea simplex</I> on 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 A4.314 Neocrania anomala and Protanthea simplex on sheltered circalittoral rock same
EUNIS Habitat Classification 200308 A3.715 Neocrania anomala and Protanthea simplex on low energy circalittoral rock same
EUNIS Habitat Classification 200202 A3.715 Neocrania anomala and Protanthea simplex on very sheltered circalittoral rock same
EUNIS Habitat Classification 199910 A3.715 Neocrania anomala and Protanthea simplex on very sheltered circalittoral rock same
MNCR BioMar 97.06 (Britain & Ireland) SCR.BrAs.NeoPro Neocrania anomala and Protanthea simplex on very sheltered circalittoral rock same
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