EUNIS habitat classification 2017 > M - Marine benthic habitats > MB2 - Infralittoral biogenic habitat > MB23 - Baltic infralittoral biogenic habitat > MB231 - Baltic infralittoral bottoms dominated by epibentic bivalves > MB2311 - Baltic infralittoral bottoms habitat dominated by Mytilidae

Baltic infralittoral bottoms habitat dominated by Mytilidae

Description (English)

Baltic bottoms in the photic zone of which sessile/semi-sessile epibenthic bivalves cover at least 10 % of the seabed Epibenthic bivalves cover at least 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 rock and/or boulders. Depth is typically from 5 to 20 meters. Appears in all wave exposure classes. Salinity must be at least 5 psu.
Characteristic species
Mytilus spp. and Modiolus modiolus
Quality descriptors
Amount of sediment and epiphytic annual algae. Diversity, abundance and biomass of fauna.
Geographic range
Baltic Sea up to the Quark in the North.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type	code MB2311
Relation to	Annex I habitat types (EU Habitats Directive)

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
Council Directive 92/43/EEC of 21 May 1992 on the conservation of natural habitats and of wild fauna and flora - consolidated version 01/01/2007	Annex I: natural habitat types of community interest whose conservation requires the designation of special areas of conservation	Large shallow inlets and bays	1160	Overlap	http://ec.europa.eu/environm...rective/index_en.htm
Council Directive 92/43/EEC of 21 May 1992 on the conservation of natural habitats and of wild fauna and flora - consolidated version 01/01/2007	Annex I: natural habitat types of community interest whose conservation requires the designation of special areas of conservation	Reefs	1170	Narrower

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)	A3.4	Baltic exposed infralittoral rock	overlap
EUNIS Habitat Classification 2007 (revised descriptions 2012)	A3.6	Baltic sheltered infralittoral rock	overlap
EUNIS Habitat Classification 2007 (revised descriptions 2012)	A3.5	Baltic moderately exposed infralittoral rock	overlap
European Red List of Habitats	BAL7	Epifaunal communities on Baltic infralittoral rock and mixed substrata (predominantly hard);	narrower
European Red List of Habitats	BAL17	Unvegetated epifaunal communities on Baltic infralittoral coarse sediment	narrower
European Red List of Habitats	BAL38	Epifaunal communities on Baltic infralittoral muddy sediment	narrower
European Red List of Habitats	BAL20	Unvegetated communities on Baltic infralittoral shell gravel	narrower
European Red List of Habitats	BAL9	Communities on Baltic infralittoral clay and other hard substrata	narrower

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

History

Classification	Code	Habitat type name	Relationship type
EUNIS Habitat Classification 200410	A3.5	Baltic moderately exposed infralittoral rock	same
EUNIS Habitat Classification 200410	A3.4	Baltic exposed infralittoral rock	same
EUNIS Habitat Classification 200410	A3.6	Baltic sheltered infralittoral rock	same
EUNIS Habitat Classification 200308	A3.2622	Baltic solid rock bottoms of the infralittoral photic zone: level bottoms dominated by macrophyte vegetation	overlap
EUNIS Habitat Classification 200308	A3.2611	Baltic soft rock bottoms of the infralittoral photic zone with little or no macrophyte vegetation	overlap
EUNIS Habitat Classification 200308	A3.2631	Baltic stony bottoms of the infralittoral photic zone with little or no macrophyte vegetation	overlap
EUNIS Habitat Classification 200308	A3.2641	Baltic hard clay bottoms of the infralittoral photic zone with little or no macrophyte vegetation	overlap
EUNIS Habitat Classification 200308	A3.2623	Baltic solid rock reefs of the infralittoral photic zone	overlap
EUNIS Habitat Classification 200308	A3.262	Baltic solid rock bottoms of the infralittoral photic zone	overlap
EUNIS Habitat Classification 200308	A3.2612	Baltic soft rock bottoms of the infralittoral photic zone dominated by macrophyte vegetation	overlap
EUNIS Habitat Classification 200308	A3.2632	Baltic stony bottoms of the infralittoral photic zone dominated by macrophyte vegetation	overlap
EUNIS Habitat Classification 200308	A3.264	Baltic hard clay bottoms of the infralittoral photic zone	overlap
EUNIS Habitat Classification 200308	A3.2621	Baltic solid rock bottoms of the infralittoral photic zone: level bottoms with little or no macrophyte vegetation	overlap
EUNIS Habitat Classification 200308	A3.2613	Baltic soft rock reefs of the infralittoral photic zone	overlap
EUNIS Habitat Classification 200308	A3.2633	Baltic stony reefs of the infralittoral photic zone	overlap
EUNIS Habitat Classification 200308	A3.261	Baltic soft rock bottoms of the infralittoral photic zone	overlap
EUNIS Habitat Classification 200308	A3.263	Baltic stony bottoms of the infralittoral photic zone	overlap
EUNIS Habitat Classification 200202	A3.2613	Baltic soft rock reefs of the infralittoral photic zone	same
EUNIS Habitat Classification 200202	A3.2633	Baltic stony reefs of the infralittoral photic zone	same
EUNIS Habitat Classification 200202	A3.263	Baltic stony bottoms of the infralittoral photic zone	same
EUNIS Habitat Classification 200202	A3.261	Baltic soft rock bottoms of the infralittoral photic zone	same
EUNIS Habitat Classification 200202	A3.2622	Baltic solid rock bottoms of the infralittoral photic zone: level bottoms dominated by macrophyte vegetation	same
EUNIS Habitat Classification 200202	A3.2611	Baltic soft rock bottoms of the infralittoral photic zone with little or no macrophyte vegetation	same
EUNIS Habitat Classification 200202	A3.2631	Baltic stony bottoms of the infralittoral photic zone with little or no macrophyte vegetation	same
EUNIS Habitat Classification 200202	A3.2623	Baltic solid rock reefs of the infralittoral photic zone	same
EUNIS Habitat Classification 200202	A3.2641	Baltic hard clay bottoms of the infralittoral photic zone with little or no macrophyte vegetation	same
EUNIS Habitat Classification 200202	A3.262	Baltic solid rock bottoms of the infralittoral photic zone	same
EUNIS Habitat Classification 200202	A3.2632	Baltic stony bottoms of the infralittoral photic zone dominated by macrophyte vegetation	same
EUNIS Habitat Classification 200202	A3.2612	Baltic soft rock bottoms of the infralittoral photic zone dominated by macrophyte vegetation	same
EUNIS Habitat Classification 200202	A3.2621	Baltic solid rock bottoms of the infralittoral photic zone: level bottoms with little or no macrophyte vegetation	same
EUNIS Habitat Classification 200202	A3.264	Baltic hard clay bottoms of the infralittoral photic zone	same
EUNIS Habitat Classification 199910	A3.2612	Baltic soft rock bottoms of the infralittoral photic zone dominated by macrophyte vegetation	same
EUNIS Habitat Classification 199910	A3.2632	Baltic stony bottoms of the infralittoral photic zone dominated by macrophyte vegetation	same
EUNIS Habitat Classification 199910	A3.264	Baltic hard clay bottoms of the infralittoral photic zone	same
EUNIS Habitat Classification 199910	A3.2621	Baltic solid rock bottoms of the infralittoral photic zone: level bottoms with little or no macrophyte vegetation	same
EUNIS Habitat Classification 199910	A3.2613	Baltic soft rock reefs of the infralittoral photic zone	same
EUNIS Habitat Classification 199910	A3.2633	Baltic stony reefs of the infralittoral photic zone	same
EUNIS Habitat Classification 199910	A3.261	Baltic soft rock bottoms of the infralittoral photic zone	same
EUNIS Habitat Classification 199910	A3.263	Baltic stony bottoms of the infralittoral photic zone	same
EUNIS Habitat Classification 199910	A3.2622	Baltic solid rock bottoms of the infralittoral photic zone: level bottoms dominated by macrophyte vegetation	same
EUNIS Habitat Classification 199910	A3.2611	Baltic soft rock bottoms of the infralittoral photic zone with little or no macrophyte vegetation	same
EUNIS Habitat Classification 199910	A3.2631	Baltic stony bottoms of the infralittoral photic zone with little or no macrophyte vegetation	same
EUNIS Habitat Classification 199910	A3.2641	Baltic hard clay bottoms of the infralittoral photic zone with little or no macrophyte vegetation	same
EUNIS Habitat Classification 199910	A3.2623	Baltic solid rock reefs of the infralittoral photic zone	same
EUNIS Habitat Classification 199910	A3.262	Baltic solid rock bottoms of the infralittoral photic zone	same

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