Arctic circalittoral rock
Description (English)
Circalittoral rock is characterised by animal dominated communities (a departure from the algae dominated communities in the infralittoral zone). The circalittoral zone can itself be split into two sub-zones; upper circalittoral (foliose red algae present) and lower circalittoral (foliose red algae absent). The depth at which the circalittoral zone begins is directly dependent on the intensity of light reaching the seabed; in highly turbid conditions, the circalittoral zone may begin just below water level at mean low water springs (MLWS).
Source: EUNIS habitat classification
Quick facts
| EUNIS habitat type | code MC11 |
|---|---|
| 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
Not available
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 | 11.24 | Sublittoral rocky seabeds and kelp forests | narrower | |
| Palaearctic Habitat Classification 1997 | 11.25 | Sublittoral organogenic concretions | narrower | |
| Palaearctic Habitat Classification 1996 | 11.25 | narrower | ||
| Palaearctic Habitat Classification 1996 | 11.24 | narrower | ||
| Palaearctic Habitat Classification 1993 | 11.25 | narrower | ||
| Palaearctic Habitat Classification 1993 | 11.24 | narrower | ||
| CORINE Biotopes Classification 1991 | 11.24 | narrower | ||
| CORINE Biotopes Classification 1991 | 11.25 | narrower |
