Polyides rotundus and/or Furcellaria lumbricalis on reduced salinity infralittoral rock

English name: Polyides rotundus and/or Furcellaria lumbricalis on reduced salinity infralittoral rock

Description (English)

Bedrock and boulders characterised by a dense turf of the red seaweeds Polyides rotundus and/or Furcellaria lumbricalis, often with a dense mat of filamentous brown and green seaweeds including Ectocarpaceae and Cladophora spp. Other red seaweeds presents include Chondrus crispus, Gracilaria gracilis and coralline crusts as well as the odd brown seaweed Chorda filum or Laminaria spp. Associated with these seaweeds are a variety of ascidians including Clavelina lepadiformis, Ascidiella aspersa, Ascidiella scabra and Ciona intestinalis as well as the anemones Anemonia viridis and Actinia equina and the sponge Halichondria panicea. More mobile fauna include the starfish Asterias rubens, the crab Carcinus maenas, the hermit crab Pagurus bernhardus, the opossum shrimps Mysidae and the gastropod Littorina littorea. Attached to the rock or cobbles are spirorbid polychaetes and the mussel Mytilus edulis. Please notice that part of this diversity is due to large differences between sites.
Situation: Nearby rock (units A3.342 and A3.341) and seagrass Ruppia maritima dominating much of the surrounding muddy sediment (unit A5.5343). Mixed sediment supports filamentous green seaweeds e.g. Cladophora spp. and Derbesia marina on A5.528.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A3.343
Bern Convention Included in a Resolution 4 habitat type at a higher level (A3)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Actinia equina
Invertebrates Anemonia viridis
Invertebrates Ascidiella aspersa
Invertebrates Ascidiella scabra
Invertebrates Asterias rubens
Invertebrates Carcinus maenas
Algae Chondrus crispus
Algae Chorda filum
Invertebrates Ciona intestinalis
Invertebrates Clavelina lepadiformis
Algae Derbesia marina
Algae Furcellaria lumbricalis
Algae Gracilaria gracilis
Invertebrates Halichondria panicea
Invertebrates Littorina littorea
Invertebrates Mytilus edulis
Invertebrates Pagurus bernhardus
Algae Polyides rotundus
Flowering Plants Ruppia maritima
Species scientific name English common name Species group
Actinia equina Invertebrates
Anemonia viridis Invertebrates
Ascidiella aspersa Invertebrates
Ascidiella scabra Invertebrates
Asterias rubens Invertebrates
Carcinus maenas Invertebrates
Chondrus crispus Algae
Chorda filum Algae
Ciona intestinalis Invertebrates
Clavelina lepadiformis Invertebrates
Derbesia marina Algae
Furcellaria lumbricalis Algae
Gracilaria gracilis Algae
Halichondria panicea Invertebrates
Littorina littorea Invertebrates
Mytilus edulis Invertebrates
Pagurus bernhardus Invertebrates
Polyides rotundus Algae
Ruppia maritima Flowering Plants

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 IR.LIR.Lag.ProtFur <I>Polyides rotundus</I> and/or <I>Furcellaria lumbricalis</I> on reduced salinity infralittoral 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 A3.343 Polyides rotundus and/or Furcellaria lumbricalis on reduced salinity infralittoral rock same
EUNIS Habitat Classification 200308 A3.333 Polyides rotundus and/or Furcellaria lumbricalis on reduced salinity infralittoral rock same
EUNIS Habitat Classification 200202 A3.333 Polyides rotundus and/or Furcellaria lumbricalis on reduced salinity infralittoral rock same
EUNIS Habitat Classification 199910 A3.333 Polyides rotundus and/or Furcellaria lumbricalis on reduced salinity infralittoral rock same
MNCR BioMar 97.06 (Britain & Ireland) SIR.Lag.PolFur Polyides rotundus and/or Furcellaria lumbricalis on reduced salinity infralittoral rock same
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