Temperate, lowland to montane siliceous scree

Description (English)

Siliceous screes and moraines of warm exposures, derived from a diversity of sedimentary, igneous and metamorphic rocks on the lower slopes of mountain ranges in the nemoral zone. Often the screes are mixed with fine soil. Vegetation can be completely lacking, but bryophyte or lichen-dominated, species-poor communities can occur on rock surfaces. The fine soil accumulated in crevices can support a variety of forb or fern-dominated vegetation. Siliceous screes, in general, have a lower species richness than calcareous screes but ferns can be diverse and luxuriant. Natural succession on more stable screes results in the development of scrub and woodland, not included here.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code U23
Relation to Resolution 4 habitat type (used for designation of Emerald sites)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Indicator species

Diagnostic species
Constant species
Dominant species
Flowering Plants Galeopsis segetum
Flowering Plants Digitalis purpurea
Flowering Plants Senecio viscosus
Flowering Plants Linaria repens

Diagnostic species occur concentrated in the habitat in question, but are absent or rare in other habitats. They are good positive indicators of the habitat, but they do not need to occur in every location of the habitat.

Species scientific name English common name Species group
Galeopsis segetum Flowering Plants
Digitalis purpurea Flowering Plants
Senecio viscosus Flowering Plants
Linaria repens Flowering Plants
Flowering Plants Digitalis purpurea
Flowering Plants Avenella flexuosa
Flowering Plants Rumex acetosella
Flowering Plants Galeopsis segetum
Flowering Plants Senecio viscosus
Flowering Plants Campanula rotundifolia
Flowering Plants Linaria repens
Flowering Plants Cytisus scoparius
Flowering Plants Teucrium scorodonia
Flowering Plants Pilosella officinarum
Flowering Plants Agrostis capillaris
Flowering Plants Galeopsis tetrahit
Flowering Plants Festuca ovina

Constant species occur frequently in the habitat, but they may include generalist species that are also frequent in other habitats.

Species scientific name English common name Species group
Digitalis purpurea Flowering Plants
Avenella flexuosa Flowering Plants
Rumex acetosella Flowering Plants
Galeopsis segetum Flowering Plants
Senecio viscosus Flowering Plants
Campanula rotundifolia Flowering Plants
Linaria repens Flowering Plants
Cytisus scoparius Flowering Plants
Teucrium scorodonia Flowering Plants
Pilosella officinarum Flowering Plants
Agrostis capillaris Flowering Plants
Galeopsis tetrahit Flowering Plants
Festuca ovina Flowering Plants

Dominant species are those that often reach high cover in the habitat, thus determining the habitat physiognomy.

Species scientific name English common name Species group

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) H2.5 Acid siliceous screes of warm exposures narrower
European Red List of Habitats H2.5 Temperate, lowland to montane siliceous scree same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 H2.5 Acid siliceous screes of warm exposures same
EUNIS Habitat Classification 200308 H2.5 Acid siliceous screes of warm exposures same
EUNIS Habitat Classification 200202 H2.5 Acid siliceous screes of warm exposures same
EUNIS Habitat Classification 199910 H2.5 Acid siliceous screes of warm exposures same
EUNIS Habitat Classification 199811 H2.5 Acid siliceous screes of warm exposures same
EUNIS Habitat Classification 199712 H2.5 Siliceous screes of warm exposures same
Palaearctic Habitat Classification 199905 61.3 Part of Western Mediterranean and thermophilous screes wider
Palaearctic Habitat Classification 1997 61.3 Part of Western Mediterranean and thermophilous screes wider
Palaearctic Habitat Classification 1996 61.3   wider
Palaearctic Habitat Classification 1993 61.3   wider
CORINE Biotopes Classification 1991 61.3   wider
CORINE Biotopes Classification 1989 61.3   wider
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