Subarctic barren lava fields and flows
Description (English)
Hard or porous rocky surfaces and chaotic rock jumbles formed by solidified lava flows originating from volcanoes and fissures of subarctic regions, unvegetated, occupied by lichens or mosses, or colonized by specialised, relatively sparse herb- or shrub-dominated communities. Within Europe they are restricted to Iceland. A range of surface characteristics is presented by lava of differing composition, viscosity and gas content, including pahoehoe or ropy lava, aa, scoria, pumice and pillow lava. A gradient of increasing acidity and viscosity extends from basalts through andesites and dacites to rhyolites.
Source: EUNIS habitat classification
Quick facts
| EUNIS habitat type | code U612 |
|---|
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) | H6.24 | Barren lava fields and flows | narrower |
History
| Classification | Code | Habitat type name | Relationship type | Comment |
|---|---|---|---|---|
| EUNIS Habitat Classification 200410 | H6.24 | Barren lava fields and flows | same | |
| EUNIS Habitat Classification 200308 | H6.24 | Barren lava fields and flows | same | |
| EUNIS Habitat Classification 200202 | H6.24 | Barren lava fields and flows | same | |
| EUNIS Habitat Classification 199910 | H6.21 | Barren lava fields | same | |
| EUNIS Habitat Classification 199811 | H6.21 | Barren lava fields | same | |
| EUNIS Habitat Classification 199712 | H6.21 | Barren lava fields | same | |
| Palaearctic Habitat Classification 199905 | 66.3 | Barren lava fields | same | |
| Palaearctic Habitat Classification 1997 | 66.3 | Barren lava fields | same | |
| Palaearctic Habitat Classification 1996 | 66.3 | same | ||
| Palaearctic Habitat Classification 1993 | 66.3 | same | ||
| CORINE Biotopes Classification 1991 | 66.3 | same |
