Laminaria saccharina and red seaweeds on Atlantic infralittoral sediments
Description (English)
On infralittoral mixed muddy substrata communities characterised by the kelp Laminaria saccharina and mixed filamentous and foliose red algae can be found. This biotope contains a number of sub-biotopes distinguished by the degree of either wave or tidal exposure. In moderately strong tidal streams in exposed areas Laminaria is sparse and dense stands of red seaweeds are found attached to the boulders and cobbles that make up a large proportion of the sediment (MB1-274). As the degree of wave and/or tidal exposure decreases there is a change in community structure, with the density of Laminaria and the diversity of red algal species increasing (MB3-2112). As the environment becomes more stable a number of brown algal species are able to inhabit this environment and a rich infauna develops (MB5-211). In the most sheltered examples of this biotope a diverse muddy sediment infauna can be found and the 'Trailliella' phase of Bonnemaisonia hamifera may develop.
Source: EUNIS habitat classification
Quick facts
EUNIS habitat type | code MB3211 |
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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
Other classifications
Classification | Code | Habitat type name | Relationship type |
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EUNIS Habitat Classification 2007 (revised descriptions 2012) | A5.521 | Laminaria saccharina and red seaweeds on infralittoral sediments | same |
History
Classification | Code | Habitat type name | Relationship type | Comment |
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EUNIS Habitat Classification 200410 | A5.521 | Laminaria saccharina and red seaweeds on infralittoral sediments | same | |
EUNIS Habitat Classification 200308 | A4.411 | Laminaria saccharina, Chorda filum and filamentous red seaweeds on sheltered shallow-water sediment | narrower | |
EUNIS Habitat Classification 200308 | A3.235 | Ephemeral red seaweeds and kelps on tide-swept mobile infralittoral cobbles | narrower | |
EUNIS Habitat Classification 200202 | A3.235 | Ephemeral red seaweeds and kelps on tide-swept mobile infralittoral cobbles | narrower | |
EUNIS Habitat Classification 200202 | A4.411 | Laminaria saccharina, Chorda filum and filamentous red seaweeds on sheltered shallow-water sediment | narrower | |
EUNIS Habitat Classification 199910 | A4.411 | Laminaria saccharina, Chorda filum and filamentous red seaweeds on sheltered shallow-water sediment | narrower | |
EUNIS Habitat Classification 199910 | A3.235 | Ephemeral red seaweeds and kelps on tide-swept mobile infralittoral cobbles | narrower | |
MNCR BioMar 97.06 (Britain & Ireland) | IMX.KSwMx.LsacX | Laminaria saccharina, Chorda filum and filamentous red seaweeds on sheltered infralittoral sediment | narrower | |
MNCR BioMar 97.06 (Britain & Ireland) | MIR.SedK.EphR | Ephemeral red seaweeds and kelps on tide-swept mobile infralittoral cobbles | narrower |