EUNIS habitat classification 2012 amended 2019 > A - Marine habitats > A5 - Sublittoral sediment > A5.5 - Sublittoral macrophyte-dominated sediment > A5.51 - Maerl beds > A5.513 - Lithothamnion corallioides maerl beds on infralittoral muddy gravel

Lithothamnion corallioides maerl beds on infralittoral muddy gravel

English name: Lithothamnion corallioides maerl beds on infralittoral muddy gravel

Description (English)

Live maerl beds in sheltered, silty conditions which are dominated by Lithothamnion corallioides with a variety of foliose and filamentous seaweeds. Live maerl is at least common but there may be noticeable amounts of dead maerl gravel and pebbles. Other species of maerl, such as Phymatolithon calcareum and Phymatolithon purpureum, may also occur as a less abundant component. Species of seaweed such as Dictyota dichotoma, Halarachnion ligulatum. and Ulva spp. are often present, although are not restricted to this biotope, whereas Dudresnaya verticillata tends not to occur on other types of maerl beds. The anemones Anemonia viridis and Cerianthus lloydii, the polychaetes Notomastus latericeus and Caulleriella alata, the isopod Janira maculosa and the bivalve Hiatella arctica are typically found in A5.513 where as Echinus esculentus tends to occur more in other types of maerl. The seaweeds Laminaria saccharina and Chorda filum may also be present in some habitats. A5.513 has a south-western distribution in Britain and Ireland. Sheltered, stable, fully saline maerl beds in the north of Great Britain (where L. corallioides has not been confirmed to occur) may need to be described as an analogous biotope to A5.513 (see A5.511).

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A5.513
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 Dictyota dichotoma
Algae Dudresnaya verticillata
Algae Halarachnion ligulatum
Algae Laminaria saccharina
Algae Lithothamnion corallioides
Algae Phymatolithon calcareum
Algae Phymatolithon purpureum
Invertebrates Anemonia viridis
Invertebrates Caulleriella alata
Invertebrates Echinus esculentus
Invertebrates Hiatella arctica
Invertebrates Janira maculosa
Invertebrates Notomastus latericeus
Species scientific name English common name Species group
Chorda filum Algae
Dictyota dichotoma Algae
Dudresnaya verticillata Algae
Halarachnion ligulatum Algae
Laminaria saccharina Algae
Lithothamnion corallioides Algae
Phymatolithon calcareum Algae
Phymatolithon purpureum Algae
Anemonia viridis Invertebrates
Caulleriella alata Invertebrates
Echinus esculentus Invertebrates
Hiatella arctica Invertebrates
Janira maculosa Invertebrates
Notomastus latericeus Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 SS.SMp.Mrl.Lcor <I>Lithothamnion corallioides</I> maerl beds on infralittoral muddy gravel source
CORINE Land Cover 5.2.3. Sea and ocean n/a
Barcelona Convention 199812 IV.2.2.2. Maerl facies (Lithothamnion corallioides and Phymatholithon calcareum) narrower
Barcelona Convention 199812 III.3.2.1. Maërl facies (= Association with Lithothamnion corallioides and Phymatolithon calcareum) (can also be found as facies of the biocenosis of coastal detritic) narrower
Biodiversity Action Plan Priority Habitats (UK) 41 Maerl beds wider
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 200410 A5.513 Lithothamnion corallioides maerl beds on infralittoral muddy gravel same
EUNIS Habitat Classification 200308 A4.651 Maerl facies (Lithothamnion corallioides and Phymatolithon calcareum) overlap
EUNIS Habitat Classification 200308 A4.613 Maerl facies (= Association with Lithothamnion corallioides and Phymatolithon calcareum) overlap
EUNIS Habitat Classification 200308 A4.621 Lithothamnion corallioides maerl beds on infralittoral muddy gravel same
EUNIS Habitat Classification 200202 A4.651 Maerl facies (Lithothamnion corallioides and Phymatolithon calcareum) narrower
EUNIS Habitat Classification 200202 A4.613 Maërl facies (= Association with Lithothamnion corallioides and Phymatolithon calcareum) narrower
EUNIS Habitat Classification 200202 A4.621 Lithothamnion coralloides maerl beds on shallow-water muddy gravel narrower
EUNIS Habitat Classification 199910 A4.4A2 Maerl facies (Lithothamnion corallioides and Phymatholithon calcareum) narrower
EUNIS Habitat Classification 199910 A4.113 Maërl facies (= Association with Lithothamnion corallioides and Phymatolithon calcareum) narrower
EUNIS Habitat Classification 199910 A4.421 Lithothamnion coralloides maerl beds on shallow-water muddy gravel narrower
MNCR BioMar 97.06 (Britain & Ireland) IMX.MrlMX.Lcor Lithothamnion coralloides maerl beds on infralittoral muddy gravel same
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