Ascophyllum nodosum and epiphytic sponges and ascidians on variable salinity infralittoral rock

English name: Ascophyllum nodosum and epiphytic sponges and ascidians on variable salinity infralittoral rock

Description (English)

Dense subtidal stands of Ascophyllum nodosum, heavily epiphytised by sponges and ascidians in lagoon-like habitats. The wracks Fucus vesiculosus and Fucus serratus can be present along with the brown seaweed Chorda filum and the red seaweed Polyides rotundus. The crab Carcinus maenas can be present between the A. nodosum holdfasts along with the shrimps Mysidae.
Situation: Nearby rock often supports similar biotopes of submerged fucoids and green seaweeds (unit A3.341). Slightly deeper rock often supports Laminaria saccharina (unit A3.3132), usually surrounded by more extensive areas of sediment. Seagrass beds thrive well in the muddy sand of these lagoons and often cover large areas. They include both Ruppia maritima and Zostera marina (units A5.5343 and A5.5331).

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A3.342
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

Algae Ascophyllum nodosum
Algae Chorda filum
Algae Fucus serratus
Algae Fucus vesiculosus
Algae Laminaria saccharina
Algae Polyides rotundus
Flowering Plants Ruppia maritima
Flowering Plants Zostera marina
Invertebrates Carcinus maenas
Species scientific name English common name Species group
Ascophyllum nodosum Algae
Chorda filum Algae
Fucus serratus Algae
Fucus vesiculosus Algae
Laminaria saccharina Algae
Polyides rotundus Algae
Ruppia maritima Flowering Plants
Zostera marina Flowering Plants
Carcinus maenas Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 IR.LIR.Lag.AscSpAs <I>Ascophyllum nodosum</I> with epiphytic sponges and ascidians on variable 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 A3.342 Ascophyllum nodosum and epiphytic sponges and ascidians on variable salinity infralittoral rock same
EUNIS Habitat Classification 200308 A3.332 Ascophyllum nodosum and epiphytic sponges and ascidians on variable salinity infralittoral rock same
EUNIS Habitat Classification 200202 A3.332 Ascophyllum nodosum and epiphytic sponges and ascidians on variable salinity infralittoral rock same
EUNIS Habitat Classification 199910 A3.332 Ascophyllum nodosum and epiphytic sponges and ascidians on variable salinity infralittoral rock same
MNCR BioMar 97.06 (Britain & Ireland) SIR.Lag.AscSAs Ascophyllum nodosum and epiphytic sponges and ascidians on variable salinity infralittoral rock same
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