Real semi-arid grass
The real semi- arid lawn is a mapping unit within the framework of the Swiss nature conservation project “Dry meadows and pastures of national importance”, abbreviated to TWW.
Plant communities of semi-dry grasslands ( plant sociologically the association Mesobromion) were first described in 1938 by Braun-Blanquet and Moor as an independent association between the fat meadows and the real dry grasslands , they are a variant of the limestone grasslands . These are meadows that are mostly wood-free due to grazing or mowing, species-rich meadows on nutrient-poor soils. Character types are seed sasparsette ( Onobrychis viciifolia ), stemless thistle ( Cirsium acaule ), bulbous buttercup ( Ranunculus bulbosus ), creeping grouse ( Ononis repens ), orchids ( Orchis morio ) and other orchids. In general, a distinction is made within the association between meadows (Onobrychido-Brometum, Mesobrometum) and pastures (Carlino-Brometum, Gentiano-Koelerietum).
The mapping unit of real semi-arid lawns is, within the scope of the mapping instructions for finer gradations in the transition from dry, lean to nutrient-rich vegetation types, somewhat narrower than the mesobromion in some literature and at most has a very weak presence of fatty meadow species. Often dominated by grasses such as the Upright brome ( Bromus erectus ) or Brachypodium pinnatum ( Brachypodium pinnatum ) extend their stems far beyond the rather low-growing vegetation layer. Most of the stocks are herbaceous and colorful. This type of meadow is widespread in Switzerland, but is already very rare in the Central Plateau and the Northern Alps. In the lowlands, semi-arid grasslands are often displaced by intensified agriculture.
The following list of species (unit 7.3.3, vegetation group “MB”, species group “MB1” in the mapping instructions by Eggenberg et al.) Includes the typical semi-arid grass species in Switzerland
- Wundklee ( Anthyllis vulneraria )
- Feather-Zwenke ( Brachypodium pinnatum )
- Upright brome ( Bromus erectus )
- Cluster bellflower ( Campanula glomerata )
- Spring sedge ( Carex caryophyllea )
- Mountain sedge ( Carex montana )
- Silver thistle ( Carlina acaulis )
- Stemless thistle ( Cirsium acaule )
- Wild carrot ( Daucus carota )
- Carthusian carnation ( Dianthus carthusianorum s. L.)
- Warty Spurge ( Euphorbia verrucosa )
- Real sheep fescue ( Festuca ovina )
- Real bedstraw ( Galium verum )
- Yellow sun rose ( Helianthemum nummularium )
- Lesser hawkweed ( Hieracium pilosella )
- Horseshoe clover ( Hippocrepis comosa )
- Pyramidal combs ( Koeleria pyramidata )
- Seed Esparsette ( Onobrychis viciifolia )
- Creeping Restharrow ( Ononis repens )
- Thorny Restharrow ( Ononis spinosa )
- Little Bibernelle ( Pimpinella saxifraga )
- Middle plantain ( Plantago media )
- Spring cinquefoil ( Potentilla neumanniana )
- Common cowslip ( Primula veris )
- Bulbous buttercup ( Ranunculus bulbosus )
- Meadow sage ( Salvia pratensis )
- Little meadow button ( Sanguisorba minor )
- Pigeon Scabiosis ( Scabiosa columbaria )
- Wild thyme ( Thymus serpyllum aggr.)
- Mountain clover ( Trifolium montanum )
Only when the Upright brome ( Bromus erectus ) at least 5% of the area covers the types of species group "MB2" are added:
- Common trembling grass ( Briza media )
- Scabiosa knapweed ( Centaurea scabiosa )
- Cypress Spurge ( Euphorbia cyparissias )
- Fluffy meadow oats ( Helictotrichon pubescens )
- Marguerite ( Leucanthemum vulgare )
- Nodding catchfly ( Silene nutans )
swell
- Eggenberg et al., 2001: Mapping and assessment of dry meadows and pastures of national importance. Technical report. Environment series No. 325. SAEFL, Bern. Page no longer available , search in web archives: download
literature
- Delarze et al. 1999: Mesobromion (4.2.4)
- Ellenberg 1996: Mesobromion (5,322)
- Oberdorfer 1978: Mesobromion erecti
- Mucina et al. 1993: Bromion erecti
- Corine: Mesobromion (34,322)
Web links
- Page no longer available , search in web archives: BAFU Das Projekt TWW