EUNIS habitat classification 2017 > M - Marine benthic habitats > MC2 - Circalittoral biogenic habitat > MC23 - Baltic circalittoral biogenic habitat > MC233 - Baltic circalittoral shell gravel bottoms > MC2331 - Baltic circalittoral shell gravel characterized by sparse epibenthic bivalves

Baltic circalittoral shell gravel characterized by sparse epibenthic bivalves

Description (English)

Baltic circalittoral bottoms in the aphotic zonewith at least 90 % coverage of shell gravel.Sessile/semi-sessile epibenthic bivalves cover 10 % or less of the seabed and more than other perennial attached erect groups.
Physical environment
Substrate is shell gravel. Depth below approximately 20 m. Appears mostly in high energy exposure areas.
Characteristic species
Mytilus sp., Modiolus modiolus
Geographic range
Southern part of Baltic Sea

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code MC2331
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

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) A5.115 Baltic shell gravel bottoms of the aphotic zone narrower
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A5.144 Baltic shell gravel bottoms of the aphotic zone same
EUNIS Habitat Classification 200308 A4.731 Baltic shell gravel bottoms of the aphotic zone same
EUNIS Habitat Classification 200202 A4.731 Baltic shell gravel bottoms of the aphotic zone same
EUNIS Habitat Classification 199910 A4.75 Baltic shell gravel bottoms of the aphotic zone same
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