EUNIS habitat classification 2012 amended 2019 > A - Marine habitats > A5 - Sublittoral sediment > A5.5 - Sublittoral macrophyte-dominated sediment > A5.52 - Kelp and seaweed communities on sublittoral sediment > A5.522 - Laminaria saccharina and Chorda filum on sheltered upper infralittoral muddy sediment

Laminaria saccharina and Chorda filum on sheltered upper infralittoral muddy sediment

English name: Laminaria saccharina and Chorda filum on sheltered upper infralittoral muddy sediment

Description (English)

Shallow kelp community found on sandy mud and gravelly sandy mud, in sheltered or extremely sheltered conditions, with very weak tidal currents. The community is characterised by a reasonable covering of Laminaria saccharina and Chorda filum. Beneath the kelp canopy, Ulva lactuca is often frequent and some filamentous and foliose red algae may be present, along with filamentous brown ectocarpoid algae although in much lower abundance than in the A5.521 subunits. At the sediment surface ubiquitous fauna such as Asterias rubens, crabs such as Pagurus bernhardus, Carcinus maenas, and the gastropod Gibbula cineraria may be visable and in some areas Sabella pavonina may be present. Given the nature of the sediment it is likely that a wide range of infaunal bivalves and polychaetes are present including Arenicola marina, Mediomastus fragilis and Anaitides mucosa. In more tideswept areas with coarser and generally less muddy sediments A5.522 may be replaced by one of the sub units of A5.521.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A5.522
Bern Convention Included in a Resolution 4 habitat type at a higher level (A5)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Chorda filum
Algae Laminaria saccharina
Algae Ulva lactuca
Invertebrates Arenicola marina
Invertebrates Asterias rubens
Invertebrates Carcinus maenas
Invertebrates Gibbula cineraria
Invertebrates Mediomastus fragilis
Invertebrates Pagurus bernhardus
Invertebrates Sabella pavonina
Species scientific name English common name Species group
Chorda filum Algae
Laminaria saccharina Algae
Ulva lactuca Algae
Arenicola marina Invertebrates
Asterias rubens Invertebrates
Carcinus maenas Invertebrates
Gibbula cineraria Invertebrates
Mediomastus fragilis Invertebrates
Pagurus bernhardus Invertebrates
Sabella pavonina Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 SS.SMp.KSwSS.LsacCho <I>Laminaria saccharina</I> and <I>Chorda filum</I> on sheltered upper infralittoral muddy sediment 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 A5.522 Laminaria saccharina and Chorda filum on sheltered upper infralittoral muddy sediment same
EUNIS Habitat Classification 200308 A4.411 Laminaria saccharina, Chorda filum and filamentous red seaweeds on sheltered shallow-water sediment wider
EUNIS Habitat Classification 200202 A4.411 Laminaria saccharina, Chorda filum and filamentous red seaweeds on sheltered shallow-water sediment overlap
EUNIS Habitat Classification 199910 A4.411 Laminaria saccharina, Chorda filum and filamentous red seaweeds on sheltered shallow-water sediment overlap
MNCR BioMar 97.06 (Britain & Ireland) IMX.KSwMx.LsacX Laminaria saccharina, Chorda filum and filamentous red seaweeds on sheltered infralittoral sediment overlap
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