Screes
Description (English)
Accumulations of boulders, stones, rock fragments, pebbles, gravels or finer material, of non-aeolian depositional origin, unvegetated, occupied by lichens or mosses, or colonized by sparse herbs or shrubs. Included are screes and scree slopes produced by slope processes, moraines and drumlins originating from glacial deposition, sandar, eskers and kames resulting from fluvio-glacial deposition, block slopes, block streams and block fields constructed by periglacial depositional processes of downslope mass movement, ancient beach deposits constituted by former coastal constructional processes. Deposits originating from aeolian depositional processes (dunes) or from eruptive volcanic activity are not included; they are included in H5 and H6 respectively. High mountain, boreal and mediterranean unstable screes are colonized by highly specialised plant communities. They or their constituting species may also inhabit moraines and other depositional debris accumulations in the same areas. A very few communities form in lowland areas elsewhere.
Source: EUNIS habitat classification
Quick facts
| EUNIS habitat type | code H2 |
|---|
Vegetation types
Relation to vegetation types (syntaxa)
Not availableSpecies mentioned in habitat description
Other classifications
| Classification | Code | Habitat type name | Relationship type |
|---|---|---|---|
| Palaearctic Habitat Classification 200112 | 61 | Screes, gravel and boulder fields | wider |
| CORINE Land Cover | 3.3.2. | Bare rock | n/a |
| Phase 1 habitat classification (UK) 1993 | I1 | Natural rock exposure | wider |
| Phase 1 habitat classification (UK) 1993 | I12 | Natural rock exposure: scree | same |
| Biodiversity Broad Habitat Classification (UK) | 16 | Inland rock | wider |
| Milieux Naturels de Suisse 1998 | 3.3 | Eboulis | same |
| Biotopes of Slovakia 1996 | 4300000 | Skalné sutiny | n/a |
| Biotopes of Slovakia 1996 | 4323000 | Vlhké sutiny v inverzných polohách montánneho stupna | n/a |
| Biotopes of Slovakia 1996 | 4320000 | Skalné sutiny v montánnom až supramontánnom stupni | n/a |
History
| Classification | Code | Habitat type name | Relationship type |
|---|---|---|---|
| EUNIS Habitat Classification 200410 | H2 | Screes | same |
| EUNIS Habitat Classification 200308 | H2 | Screes | same |
| EUNIS Habitat Classification 200202 | H2 | Screes | same |
| EUNIS Habitat Classification 199910 | H2 | Screes | same |
| EUNIS Habitat Classification 199811 | H2 | Screes | same |
| EUNIS Habitat Classification 199712 | H2 | Screes | same |
| Palaearctic Habitat Classification 199905 | 61 | Screes | same |
| Palaearctic Habitat Classification 1997 | 61 | Screes | same |
| Palaearctic Habitat Classification 1996 | 61 | same | |
| Palaearctic Habitat Classification 1993 | 61 | same | |
| CORINE Biotopes Classification 1991 | 61 | same | |
| CORINE Biotopes Classification 1989 | 61 | same |
