EUNIS habitat classification 2017 > M - Marine benthic habitats > MC1 - Circalittoral rock > MC14 - Black Sea circalittoral rock > MC141 - Invertebrate dominated Black sea circalittoral rock

Invertebrate dominated Black sea circalittoral rock

Description (English)

Circalittoral rock occurs on rocky coasts in depths between 10-15 m (depending on local conditions of light penetration) down to 30-70m (depending on how deep rocky reefs occur at the location). The fauna is highly diverse, including many invertebrate and fish species which occur only in this habitat, some of them rare or protected. The dominant species is often the blue mussel Mytilus galloprovincialis, but in certain subtypes other benthic species may dominate:- crusts and turfs formed by bryozoans, crust sponges (Dysideasp.) or colonial tunicates Botryllus schlosseri;- vertical walls and ridges can be covered either by dense colonies of erect, branched sponges Halichondria sp. and Haliclona sp. or by solitary ascidians Molgula manhattensis, Ascidiella aspersa, Ciona intestinalis;- Hydrozoans can form dense turfs and even tall canopies in the case of larger species (Obelia longissima)

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code MC141
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 Ascidiella aspersa
Invertebrates Botryllus schlosseri
Invertebrates Ciona intestinalis
Invertebrates Molgula manhattensis
Invertebrates Mytilus galloprovincialis
Invertebrates Obelia longissima
Species scientific name English common name Species group
Ascidiella aspersa Invertebrates
Botryllus schlosseri Invertebrates
Ciona intestinalis Invertebrates
Molgula manhattensis Invertebrates
Mytilus galloprovincialis Invertebrates
Obelia longissima Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) A4.24 Mussel beds on circalittoral rock narrower
European Red List of Habitats BLSA4.24 Invertebrate-dominated Pontic circalittoral rock same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A4.24 Mussel beds on circalittoral rock same
EUNIS Habitat Classification 200308 A3.64 Mussel beds on circalittoral rock same
EUNIS Habitat Classification 200202 A3.64 Mussel beds on moderately exposed circalittoral rock same
EUNIS Habitat Classification 199910 A3.64 Mussel beds on moderately exposed circalittoral rock same
EUNIS Habitat Classification 199811 A3.65 Mussel beds on moderately exposed circalittoral rock same
EUNIS Habitat Classification 199712 A5.25 Mussel beds on moderately exposed circalittoral 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 97.06 (Britain & Ireland) MCR.M Mussel beds (open coast circalittoral rock/mixed substrata) same
MNCR BioMar 96.7 (Britain & Ireland) MCR.M   same
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