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 > MB2312 - Baltic infralittoral bottoms dominated by Dreissena polymorpha

Baltic infralittoral bottoms dominated by Dreissena polymorpha

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 Dreissena polymorpha constitutes at least 50 % of the biomass.
Physical environment
Substrate is rock and/or boulders. Depth is typically from 2 to 10 meters. Appears in sheltered to moderately exposed areas. Salinity must be less than 5 psu.
Characteristic species
Dreissena polymorpha
Geographic range
Estonian west coast and eastern Gulf of Finland

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type	code MB2312
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 Dreissena polymorpha

Species scientific name	English common name	Species group
Dreissena polymorpha		Invertebrates

Other classifications

Classification	Code	Habitat type name	Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012)	A5.627	Baltic mussel beds in the infralittoral photic zone	narrower
European Red List of Habitats	BAL38	Epifaunal communities on Baltic infralittoral muddy sediment	narrower
European Red List of Habitats	BAL7	Epifaunal communities on Baltic infralittoral rock and mixed substrata (predominantly hard)	narrower

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

History

Classification	Code	Habitat type name	Relationship type
EUNIS Habitat Classification 200410	A5.627	Baltic mussel beds in the infralittoral photic zone	same
EUNIS Habitat Classification 200308	A4.642	Baltic Mytilus edulis beds in the infralittoral photic zone	same
EUNIS Habitat Classification 200202	A4.642	Baltic Mytilus edulis beds in the infralittoral photic zone	same
EUNIS Habitat Classification 199910	A4.47	Baltic Mytilus edulis beds in the infralittoral photic zone	same
EUNIS Habitat Classification 199811	A3.33	Mussel beds on sheltered infralittoral rock	same
EUNIS Habitat Classification 199712	A3.33	Mussels beds on sheltered infralittoral rock	same
Palaearctic Habitat Classification 199905	11.254	Part of Mussel beds	narrower
Palaearctic Habitat Classification 1997	11.254	Part of Mussel beds	narrower
Palaearctic Habitat Classification 1996	11.254		narrower
Palaearctic Habitat Classification 1993	11.254		narrower
CORINE Biotopes Classification 1991	11.254		narrower
MNCR BioMar 96.7 (Britain & Ireland)	SIR.Myt		same

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