Ascophyllum nodosum and epiphytic sponges and ascidians on variable salinity Atlantic 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 MB1-251). Slightly deeper rock often supports Laminaria saccharina (unit MB1-23A2), 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 MB5-224 and MB5-223).
Source: EUNIS habitat classification
Quick facts
EUNIS habitat type | code MB1252 |
---|---|
Relation to | Resolution 4 habitat type (used for designation of Emerald sites) |
Legal status
Relation to other habitat types mentioned in legal instruments
Vegetation types
Relation to vegetation types (syntaxa)
Not availableSpecies mentioned in habitat description
Species scientific name | English common name | Species group |
---|---|---|
Ascophyllum nodosum | 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 |
---|---|---|---|
EUNIS Habitat Classification 2007 (revised descriptions 2012) | A3.342 | Ascophyllum nodosum and epiphytic sponges and ascidians on variable salinity infralittoral rock | same |
History
Classification | Code | Habitat type name | Relationship type | Comment |
---|---|---|---|---|
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 |