Biocenosis of Mediterranean shelf-edge rock
Description (English)
The biocoenoses of the deep circalittoral rocky bottoms mainly composed of sponges, anthozoans, bryozoans and brachiopods while macroscopic plant life is absent. Found near the border of the continental shelf, these biocoenoses, dwelling to 250 m depth, usually occupy rough bottoms where current and turbidity are reasonably important. In these habitats, the progressively lower light conditions have a profound influence on the biocoenoses composition mostly because of reduced primary production, but this zone continues to be characterised by high biodiversity and biomass levels, at times comparable to those found in shallow waters.
Source: EUNIS habitat classification
Quick facts
EUNIS habitat type | code MD151 |
---|---|
Relation to | Resolution 4 habitat type (used for designation of Emerald sites) |
Legal status
Relation to other habitat types mentioned in legal instruments
Vegetation types
Relation to vegetation types (syntaxa)
Not availableSpecies mentioned in habitat description
Other classifications
Classification | Code | Habitat type name | Relationship type |
---|---|---|---|
EUNIS Habitat Classification 2007 (revised descriptions 2012) | A4 | Circalittoral rock and other hard substrata | narrower |
History
Classification | Code | Habitat type name | Relationship type | Comment |
---|---|---|---|---|
EUNIS Habitat Classification 200410 | A4 | Circalittoral rock and other hard substrata | same | |
EUNIS Habitat Classification 200308 | A3 | Sublittoral rock and other hard substrata | wider | |
EUNIS Habitat Classification 200202 | A3 | Sublittoral rock and other hard substrata | wider | |
EUNIS Habitat Classification 199910 | A3 | Sublittoral rock and other hard substrata | wider | |
EUNIS Habitat Classification 199811 | A3 | Sublittoral rock and other hard substrata | wider | |
EUNIS Habitat Classification 199712 | X15 | Sublittoral rock (to 200m depth) | same | |
Palaearctic Habitat Classification 199905 | 11.24 | Sublittoral rocky seabeds and kelp forests | narrower | |
Palaearctic Habitat Classification 1997 | 11.25 | Sublittoral organogenic concretions | narrower | |
Palaearctic Habitat Classification 1997 | 11.24 | Sublittoral rocky seabeds and kelp forests | narrower | |
Palaearctic Habitat Classification 1996 | 11.25 | narrower | ||
Palaearctic Habitat Classification 1996 | 11.24 | narrower | ||
Palaearctic Habitat Classification 1993 | 11.24 | narrower | ||
Palaearctic Habitat Classification 1993 | 11.25 | narrower | ||
CORINE Biotopes Classification 1991 | 11.25 | narrower | ||
CORINE Biotopes Classification 1991 | 11.24 | narrower |