EUNIS habitat classification 2017 > M - Marine benthic habitats > MB4 - infralittoral mixed sediment > MB43 - Baltic infralittoral mixed sediment > MB435 - Baltic infralittoral mixed sediment characterized by sparse epibenthic bivalves > MB4351 - Baltic infralittoral mixed sediment characterized by sparse Mytilidae

Baltic infralittoral mixed sediment characterized by sparse Mytilidae

Description (English)

Baltic bottoms in the photic zone with 10- 90 % coverage of hard (rock/boulders/stone) and 10-90 % soft substrata (e.g. muddy/coarse sediment/sand). Epibenthic bivalves cover less then 10%of the seabed and more than other perennial attached erect groups. Out of the epibenthic bivalves, Mytilidae constitute at least 50 % of the biomass.
Physical environment
Substrate is soft or crystalline rock, boulders or stones mixed with mobile substrates such as sand or coarse substrate. Depth is typically from 0 to 20 meters.
Characteristic species
Mytilus spp., Modiolus modiolus
Geographic range
Baltic Sea up to the Quark in the North

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type	code MB4351
Relation to	Resolution 4 habitat type (used for designation of Emerald sites)

Legal status

Relation to other habitat types mentioned in legal instruments

Legal text	Annex	Name in legal text	Code in legal text	Habitat type relationship	More information
Convention on the conservation of European wildlife and natural habitats	Revised Annex I of Resolution 4 (1996) of the Bern Convention on endangered natural habitats types using the EUNIS habitat classification (year of revision 2010)	Large shallow inlets and bays	1160	Overlap	https://wcd.coe.int/ViewDoc....ckColorLogged=FDC864 Resolution No. 4 (1996) of the Bern Convention lists endangered natural habitats requiring specific conservation measures [and the designation of Areas of Special Conservation Interest (ASCIs) forming the Emerald network]
Convention on the conservation of European wildlife and natural habitats	Revised Annex I of Resolution 4 (1996) of the Bern Convention on endangered natural habitats types using the EUNIS habitat classification (year of revision 2010)	Reefs	1170	Overlap	https://wcd.coe.int/ViewDoc....ckColorLogged=FDC864 Resolution No. 4 (1996) of the Bern Convention lists endangered natural habitats requiring specific conservation measures [and the designation of Areas of Special Conservation Interest (ASCIs) forming the Emerald network]

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Modiolus modiolus

Species scientific name	English common name	Species group
Modiolus modiolus		Invertebrates

Other classifications

Classification	Code	Habitat type name	Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012)	A5.411	Baltic level mixed sediment bottoms of the infralittoral photic zone with little or no macrophyte vegetation	narrower

For relation to plant communities (syntaxa), see Vegetation types

History

Classification	Code	Habitat type name	Relationship type
EUNIS Habitat Classification 200410	A5.411	Baltic level mixed sediment bottoms of the infralittoral photic zone with little or no macrophyte vegetation	same
EUNIS Habitat Classification 200308	A4.434	Baltic level mixed sediment bottoms of the infralittoral photic zone with little or no macrophyte vegetation	same
EUNIS Habitat Classification 200202	A4.434	Baltic level mixed sediment bottoms of the infralittoral photic zone with little or no macrophyte vegetation	same
EUNIS Habitat Classification 199910	A4.454	Baltic level mixed sediment bottoms of the infralittoral photic zone with little or no macrophyte vegetation	same

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