Coralline crusts and Paracentrotus lividus in shallow eulittoral rockpools

English name: Coralline crusts and Paracentrotus lividus in shallow eulittoral rockpools

Description (English)

Shallow and relatively small rockpools throughout the eulittoral zone on very exposed to exposed shores, characterised by a covering of encrusting coralline algae on which Corallina officinalis forms a dense turf. The bottom of these pools can be covered in coarse gravel and cobbles. In south and west Ireland these coralline pools may be dominated by the sea urchin Paracentrotus lividus and the seaweed diversity is generally low due to the grazing pressure of P. lividus, the top shells Gibbula cineraria and Gibbula umbilicalis, and winkles such as Littorina littorea. Within the pools, pits and crevices are often occupied by the anemone such as Actinia equina and Anemonia viridis and small individuals of the mussel Mytilus edulis. The siphonous green seaweed Codium spp. can also be present along with the wrack Himanthalia elongata and the brown seaweed Leathesia difformis and the filamentous red seaweed Ceramium spp. The barnacle Semibalanus balanoides is either absent or occurs at low abundance in these rockpools, presumably due to the grazing pressure on the larval stage and the predation pressure from the whelk Nucella lapillus. Soft bedrock, such as limestone, allows P. lividus to bore into the rock.
Situation: Rockpools throughout the eulittoral and lower littoral fringe in bedrock on very exposed to exposed shores.
Temporal variation: The ephemeral green seaweeds Enteromorpha intestinalis and Ulva lactuca can occur during the summer.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A1.4112

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Actinia equina
Invertebrates Anemonia viridis
Algae Corallina officinalis
Algae Enteromorpha intestinalis
Invertebrates Gibbula cineraria
Invertebrates Gibbula umbilicalis
Algae Himanthalia elongata
Algae Leathesia difformis
Invertebrates Littorina littorea
Invertebrates Mytilus edulis
Invertebrates Nucella lapillus
Invertebrates Paracentrotus lividus
Invertebrates Semibalanus balanoides
Algae Ulva lactuca
Species scientific name English common name Species group
Actinia equina Invertebrates
Anemonia viridis Invertebrates
Corallina officinalis Algae
Enteromorpha intestinalis Algae
Gibbula cineraria Invertebrates
Gibbula umbilicalis Invertebrates
Himanthalia elongata Algae
Leathesia difformis Algae
Littorina littorea Invertebrates
Mytilus edulis Invertebrates
Nucella lapillus Dog whelk Invertebrates
Paracentrotus lividus Invertebrates
Semibalanus balanoides Invertebrates
Ulva lactuca Algae

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 LR.FLR.Rkp.Cor.Par Coralline crusts and <I>Paracentrotus lividus</I> in shallow eulittoral rockpools source
CORINE Land Cover 4.2.3. Intertidal flats n/a
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 200410 A1.4112 Coralline crusts and Paracentrotus lividus in shallow eulittoral rockpools same
EUNIS Habitat Classification 200308 A1.5111 Coralline crusts and Paracentrotus lividus in shallow eulittoral rockpools same
EUNIS Habitat Classification 200202 A1.5111 Coralline crusts and Paracentrotus lividus in shallow eulittoral rockpools same
EUNIS Habitat Classification 199910 A1.5111 Coralline crusts and Paracentrotus lividus in shallow eulittoral rockpools same
MNCR BioMar 97.06 (Britain & Ireland) LR.Rkp.Cor.Par Coralline crusts and Paracentrotus lividus in shallow eulittoral rockpools same
European Environment Agency (EEA)
Kongens Nytorv 6
1050 Copenhagen K
Denmark
Phone: +45 3336 7100