EUNIS habitat classification 2017 > M - Marine benthic habitats > MB2 - Infralittoral biogenic habitat > MB23 - Baltic infralittoral biogenic habitat > MB232 - Baltic infralittoral bottoms characterized by shell gravel > MB2323 - Baltic infralittoral shell gravel dominated by epibenthic chordates

Baltic infralittoral shell gravel dominated by epibenthic chordates

Description (English)

Baltic bottoms in the photic zone of which at least 90 % is coveraged of shell gravel. Epibenthic chordates cover at least 10 % of the seabed and more than other perennial attached erect groups.
Physical environment
Substrate is shell gravel. Appears mostly in high energy exposure areas.
Characteristic species
Ciona intestinalis
Geographic range
Southern part of Baltic Sea

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type	code MB2323
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)	Sandbanks which are slightly covered by sea water all the time	1110	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)	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]

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Ciona intestinalis

Species scientific name	English common name	Species group
Ciona intestinalis		Invertebrates

Other classifications

Classification	Code	Habitat type name	Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012)	A5.113	Baltic shell gravel bottoms in the infralittoral photic zone	narrower
European Red List of Habitats	BAL20	Unvegetated communities on Baltic infralittoral shell gravel	narrower

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

History

Classification	Code	Habitat type name	Relationship type
EUNIS Habitat Classification 200410	A5.113	Baltic shell gravel bottoms in the infralittoral photic zone	same
EUNIS Habitat Classification 200308	A4.115	Baltic shell gravel bottoms in the infralittoral photic zone	same
EUNIS Habitat Classification 200202	A4.115	Baltic shell gravel bottoms in the infralittoral photic zone	same
EUNIS Habitat Classification 199910	A4.46	Baltic shell gravel bottoms in the infralittoral photic zone	same

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