EUNIS habitat classification 2017 > R - Grasslands and lands dominated by forbs, mosses or lichens > R1 - Dry grasslands > R13 - Cryptogam- and annual-dominated vegetation on calcareous and ultramafic rock outcrops

Cryptogam- and annual-dominated vegetation on calcareous and ultramafic rock outcrops

Description (English)

Open pioneer grassland with perennial succulents and spring annuals, subordinate small tussock grasses and herbs, and often with a very prominent and rich contingent of cryptogams. Typically found in small patches on very shallow and skeletal, impoverished, base-rich soils on a wide variety of base-rich and sometimes ultramafic bedrocks, and similar artificial habitats like quarry spoil and wall-tops. It is found from the hemiboreal to the submediterranean zone, occurring mainly at higher altitudes further south.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code R13
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 Saxifraga tridactylites
Flowering Plants Arenaria serpyllifolia
Flowering Plants Draba verna
Flowering Plants Sedum acre
Flowering Plants Sedum album
Flowering Plants Alyssum alyssoides
Mosses & Liverworts Abietinella abietina
Mosses & Liverworts Homalothecium sericeum
Flowering Plants Hornungia petraea
Flowering Plants Poa compressa

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
Saxifraga tridactylites Flowering Plants
Arenaria serpyllifolia Flowering Plants
Draba verna Flowering Plants
Sedum acre Flowering Plants
Sedum album Flowering Plants
Alyssum alyssoides Flowering Plants
Abietinella abietina Mosses & Liverworts
Homalothecium sericeum Mosses & Liverworts
Hornungia petraea Flowering Plants
Poa compressa Flowering Plants
Flowering Plants Arenaria serpyllifolia
Flowering Plants Sedum album
Flowering Plants Sedum acre
Flowering Plants Draba verna
Flowering Plants Poa bulbosa
Flowering Plants Saxifraga tridactylites
Flowering Plants Medicago minima
Flowering Plants Sanguisorba minor
Flowering Plants Potentilla tabernaemontani
Flowering Plants Poa compressa
Flowering Plants Alyssum alyssoides
Mosses & Liverworts Syntrichia ruralis
Flowering Plants Euphorbia cyparissias
Flowering Plants Cerastium semidecandrum
Flowering Plants Cerastium pumilum
Flowering Plants Veronica arvensis
Flowering Plants Sedum sexangulare
Flowering Plants Erodium cicutarium
Flowering Plants Echium vulgare

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
Arenaria serpyllifolia Flowering Plants
Sedum album Flowering Plants
Sedum acre Flowering Plants
Draba verna Flowering Plants
Poa bulbosa Flowering Plants
Saxifraga tridactylites Flowering Plants
Medicago minima Flowering Plants
Sanguisorba minor Flowering Plants
Potentilla tabernaemontani Flowering Plants
Poa compressa Flowering Plants
Alyssum alyssoides Flowering Plants
Syntrichia ruralis Mosses & Liverworts
Euphorbia cyparissias Flowering Plants
Cerastium semidecandrum Flowering Plants
Cerastium pumilum Flowering Plants
Veronica arvensis Flowering Plants
Sedum sexangulare Flowering Plants
Erodium cicutarium Flowering Plants
Echium vulgare Flowering Plants
Flowering Plants Sedum album

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
Sedum album Flowering Plants

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 E1.1 Inland sand and rock with open vegetation same
EUNIS Habitat Classification 200308 E1.1 Open thermophile pioneer vegetation of sandy or detritic ground same
EUNIS Habitat Classification 200202 E1.1 Open thermophile pioneer vegetation of sandy or detritic ground same
EUNIS Habitat Classification 199910 E1.1 Open thermophile pioneer vegetation of sandy or detritic ground same
EUNIS Habitat Classification 199811 E1.1 Open thermophile grasslands of sandy or detritic ground same
EUNIS Habitat Classification 199712 E1.3 Open thermophile grasslands of sandy or detritic ground same
Palaearctic Habitat Classification 199905 34.1 Middle European pioneer swards same
Palaearctic Habitat Classification 1997 34.1 Middle European pioneer swards same
Palaearctic Habitat Classification 1996 34.1   same
Palaearctic Habitat Classification 1993 34.1   same
CORINE Biotopes Classification 1991 34.1   same
CORINE Biotopes Classification 1989 34.1   same
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