Notifications
Get notifications on new reports and products. Frequency: 3-4 emails / month.
Subscriptions
Sign up to receive our reports (print and/or electronic) and quarterly e-newsletter.
Follow us
Twitter iconTwitter
Facebook iconFacebook
YouTube iconYouTube channel
RSS logo RSS Feeds
More

Write to us Write to us

For the public:


For media and journalists:

Contact EEA staff
Contact the web team
FAQ

Call us Call us

Reception:

Phone: (+45) 33 36 71 00
Fax: (+45) 33 36 71 99


next
previous
items

Skip to content. | Skip to navigation

Sound and independent information
on the environment

Neocrania anomala and Protanthea simplex on very wave-sheltered circalittoral rock

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

Quick facts

  • EUNIS habitat type (code A4.3141)
  • This habitat type is included in a Resolution 4 habitat type (Bern convention) at a higher level (A4)

Description (English)

This variant typically occurs on deep, lower circalittoral bedrock or boulder slopes (often-vertical walls) in the landward, very sheltered basins of fjordic sealochs. In these very sheltered conditions, there are frequently dense populations of the anemone Protanthea simplex growing on the silty boulder or rock slope, and on the tubes of the parchment worm Chaetopterus variopedatus. The underlying rock surfaces are usually covered with encrusting red algae, the polychaete Pomatoceros triqueter, the brachiopod Neocrania anomala, the saddle oyster Pododesmus patelliformis and the conspicuous fan worm Sabella pavonina. Scattered colonies of Alcyonium digitatum are occasionally present along with the hydroid Bougainvillia ramosa. The barnacle Balanus balanus and the hermit crab Pagurus bernhardus is occasionally seen on boulder or rock surface, whilst underneath in crevices, the squat lobster Munida rugosa may be present. A diverse range of solitary ascidians, typically found in sheltered conditions, are often present including Ciona intestinalis, Corella parallelogramma, Polycarpa pomaria, Ascidia mentula and Ascidia virginea. Echinoderms such as brittlestars Ophiothrix fragilis are frequently seen with their arms protruding from crevices in the rock, whilst the starfish Asterias rubens, the sea urchin Echinus esculentus and Psammechinus miliaris are occasionally found on the boulder or rock surface. The whelk Buccinum undatum is often present but in very low numbers.
Situation: Where this biotope occurs on vertical rock cliffs, you tend to find silted sugar kelp Laminaria saccharina communities above A4.314, in the infralittoral zone (A3.313). Where A4.314 occurs on a rock or boulder slope and due to the very sheltered nature of the habitat, it is common to find a mud plain community where slope ends (A5.3). Species such as the seapen Funiculina quadrangularis, the anemone Cerianthus lloydii and the Norway lobster Nephrops norvegicus are typically abundant.

Source: EUNIS habitat classification

Vegetation types

Not available

Species mentioned in habitat description

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 CR.LCR.BrAs.NeoPro.FS <I>Neocrania anomala</I> and <I>Protanthea simplex</I> on very wave-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 A4.3141 Neocrania anomala and Protanthea simplex on very wave-sheltered circalittoral rock same
EUNIS Habitat Classification 200308 A3.7151 Brachiopods, calcareous tubeworms (Placostegus tridentatus, Hydroides) and sponges on variable salinity circalittoral rock overlap
EUNIS Habitat Classification 200308 A3.7152 Neocrania anomala, Dendrodoa grossularia and Sarcodictyon roseum on reduced or low salinity circalittoral rock overlap
EUNIS Habitat Classification 200202 A3.7151 Brachiopods, calcareous tubeworms (Placostegus tridentatus, Hydroides) and sponges on variable salinity circalittoral rock overlap
EUNIS Habitat Classification 200202 A3.7152 Neocrania anomala, Dendrodoa grossularia and Sarcodictyon roseum on reduced or low salinity circalittoral rock overlap
EUNIS Habitat Classification 199910 A3.7151 Brachiopods, calcareous tubeworms (Placostegus tridentatus, Hydroides) and sponges on variable salinity circalittoral rock overlap
EUNIS Habitat Classification 199910 A3.7152 Neocrania anomala, Dendrodoa grossularia and Sarcodictyon roseum on reduced or low salinity circalittoral rock overlap
MNCR BioMar 97.06 (Britain & Ireland) SCR.BrAs.NeoPro.CaTw Brachiopods, calcareous tubeworms (Placostegus tridentatus, Hydroides) and sponges on variable salinity circalittoral rock overlap
MNCR BioMar 97.06 (Britain & Ireland) SCR.BrAs.NeoPro.Den Neocrania anomala, Dendrodoa grossularia and Sarcodictyon roseum on reduced or low salinity circalittoral rock overlap
European Environment Agency (EEA)
Kongens Nytorv 6
1050 Copenhagen K
Denmark
Phone: +45 3336 7100