Phymatolithon calcareum maerl beds with red seaweeds in Atlantic infralittoral clean gravel or coarse sand

Description (English)

Upper infralittoral maerl beds characterised by Phymatolithon calcareum in gravels and sand with a wide variety of associated red seaweeds. These algae typically include Dictyota dichotoma, Plocamium cartilagineum, Phycodrys rubens, Chondrus crispus, Halarachnion ligulatum, Chylocladia verticillata, Hypoglossum hypoglossoides and Nitophyllum punctum. These species are not restricted to maerl beds but their abundance on maerl beds differentiates this biotope from MB3-2212. Anthozoans and echinoderms are much less common in this biotope than in MB3-2212, which typically occurs deeper than MB3-2211.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code MB32211
Relation to Resolution 4 habitat type (used for designation of Emerald sites)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Chondrus crispus
Algae Chylocladia verticillata
Algae Dictyota dichotoma
Algae Halarachnion ligulatum
Algae Hypoglossum hypoglossoides
Algae Phycodrys rubens
Algae Phymatolithon calcareum
Algae Plocamium cartilagineum
Species scientific name English common name Species group
Chondrus crispus Algae
Chylocladia verticillata Algae
Dictyota dichotoma Algae
Halarachnion ligulatum Algae
Hypoglossum hypoglossoides Algae
Phycodrys rubens Algae
Phymatolithon calcareum Algae
Plocamium cartilagineum Algae

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) A5.5111 Phymatolithon calcareum maerl beds with red seaweeds in shallow infralittoral clean gravel or coarse sand same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A5.5111 Phymatolithon calcareum maerl beds with red seaweeds in shallow infralittoral clean gravel or coarse sand same
EUNIS Habitat Classification 200308 A4.6111 Phymatolithon calcareum maerl beds with red seaweeds in shallow infralittoral clean gravel or coarse sand same
EUNIS Habitat Classification 200202 A4.6111 Phymatolithon calcareum maerl beds with red seaweeds in shallow infralittoral clean gravel or coarse sand same
EUNIS Habitat Classification 199910 A4.1111 Phymatolithon calcareum maerl beds with red seaweeds in shallow infralittoral clean gravel or coarse sand same
MNCR BioMar 97.06 (Britain & Ireland) IGS.Mrl.Phy.R Phymatolithon calcareum maerl beds with red seaweeds in shallow infralittoral clean gravel or coarse sand same
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