Machair

English name: Machair

Quick facts

EUNIS habitat type code B1.9
Bern Convention Resolution 4 habitat type (used for designation of Emerald sites)
Relation to Annex I habitat types (EU Habitats Directive)

Description (English)

Short-turf grasslands formed on dry and seasonally waterlogged, relatively flat and low-lying sand plains, where windblown calcareous sand overlies peat or impermeable bedrock. Machair grasslands are machair in the strict sense, and form part of the machair complex (X27), characteristic of the Outer Hebrides and western Ireland, with dunes (B1.3, B1.4), shallow lochs (C1) and land cultivated on a strip rotation (I1). They support a flower-rich, and correspondingly insect-rich, dune grassland studded with shallow lochs and cultivated on a strip rotation. The grassland is dominated by Poa pratensis and Festuca rubra, accompanied by Thalictrum minus ssp. arenarium, Thymus praecox ssp. arcticus (Thymus drucei), Bellis perennis, Prunella vulgaris, Erodium cicutarium, Trifolium spp., Euphrasia spp. and many orchids, among which Dactylorhiza fuchsii ssp. hebridensis, Dactylorhiza purpurella, Gymnadenia conopsea, Coeloglossum viride, Platanthera chlorantha and Orchis mascula are the most prominent. This grassland harbours a plant community of very restricted distribution comprising vulnerable species; Cochlearia scotica, Euphrasia marshallii and Dactylorhiza fuchsii ssp. hebridensis are endemic. As a whole, machair is an essential habitat for breeding waders such as Haematopus ostralegus, Vanellus vanellus, Charadrius hiaticula, Calidris alpina, Tringa totanus and Gallinago gallinago; it supports the healthiest western European population of the threatened corncrake Crex crex.

Source:
EUNIS habitat classification
Interpretation Manual of the habitats targeted by Resolution No. 4

Vegetation types

Relation to vegetation types (syntaxa)

Name Definition Other names Reference
Armerion elongatae Pötsch 1962 Closed meso-xerophytic swards on slightly acidic to slightly alkaline sandy soils in lowlands of subcontinental Europe Plantagini-Festucion trachyphyllae Passarge 1964 nom. corr. propos.; Armerion elongatae Krausch 1959; Armerion elongatae Krausch 1962; Plantagini lanceolatae-Festucion brevipilae Passarge 1964 corr. Kratzert et Dengler 1999; Plantagini lanceolatae-Festucion ovinae Passarge 1964; Vicio lathyroidis-Potentillion argenteae Brzeg in Brzeg et Wojterska 1996 Schaminee et al, 2012
Violion caninae Schwickerath 1944 Meso-subxerophilous oligotrophic pastures in planare to submontane belts of Western and Central Europe Galio saxatilis-Festucion filiformis de Foucault 1994; Agrostion curtisii de Foucault 1986; Violo caninae-Nardion (Schwickerath 1944) Ellenberg 1978; Nardo-Galion saxatilis Preising 1949; Nardo-Galion saxatilis Preising 1950; Potentillo erectae-Holcion mollis Passarge 1979; Violo-Nardion Oberd. 1949; Avenulo marginatae sulcatae-Nardion Stieperaere in de Foucault 1994; Nardo-Agrostion caninae Cortini Pedrotti et al. 1973; Avenulo marginatae sulcatae-Nardion Stieperaere in de Foucault 2012; Galio saxatilis-Festucion vivipareae de Foucault 1994; Avenulo marginatae sulcatae-Nardion Stieperaere 1990; Danthonio decumbentis-Serapiadion linguae de Foucault 1994 Schaminee et al, 2012
Koelerion arenariae Tx. 1937 corr. Gutermann et Mucina 1993 Sandy grasslands on base-rich stabilised grey dunes of North Sea coasts from northern France to Germany Koelerion arenariae Tx. 1937 corr. Rivas-Mart. et al. 2002; Galio-Koelerion (Tx. 1937) Westhoff et Den Held 1969; Koelerion albescentis Tx. 1937; Phleo arenarii-Cerastion diffusi de Foucault 1999; Phleo arenarii-Cerastion diffusi de Foucault 2001; Phleo-Koelerion Doing 1974; Tortulo-Koelerion (Tx. 1937) Weeda, Doing et Schaminée in Schaminée et al. 1996 Schaminee et al, 2012
Ammophilion Br.-Bl. 1921 Vegetation of warm-temperate mediterranean tall-grass swards on embryonic coastal sand dunes Ammophilion australis Br.-Bl. 1921 corr. Géhu 1998; Euphorbio-Ammophilion arenariae Géhu et Géhu-Franck 1969; Agropyrion mediterraneum Géhu et Géhu-Franck 1969; Sporobolion arenarii (Géhu et Géhu-Franck ex Géhu et Biondi 1994) Rivas-Mart. et al. 2002; Agropyrion juncei Pignatti 1953; Ammophilion Br.-Bl. 1933; Ammophilion littori-arenariae Br.-Bl. 1921; Euphorbio-Festucion dumetori Géhu 1975; Sporobolion arenarii (Géhu et Géhu-Franck ex Géhu et Biondi 1994) Rivas-Mart. et al. 2001; Zygophyllion albi Géhu et al. 1990; Zygophyllion albi Géhu et al. 1991; Ammophilion arundinaceae Br.-Bl. 1921 corr. Géhu et al. in Rivas-Mart. et al. 1990 Schaminee et al, 2012
Thero-Airion Tx. ex Oberd. 1957 Pioneer vegetation on acidic shallow soils of winter-mild atlantic and sub-boreal regions of Europe and Madeira Tuberario guttatae-Airion praecocis de Foucault 1999; Airion caryophylleo-praecocis Rivas-Mart. 1978; Thero-Airion Tx. 1951; Thero-Trifolion Doing 1974; Tuberario guttatae-Airion praecocis de Foucault 2001 Schaminee et al, 2012

Species mentioned in habitat description

Birds Calidris alpina
Birds Charadrius hiaticula
Birds Crex crex
Birds Gallinago gallinago
Birds Haematopus ostralegus
Birds Tringa totanus
Birds Vanellus vanellus
Flowering Plants Bellis perennis
Flowering Plants Coeloglossum viride
Flowering Plants Dactylorhiza purpurella
Flowering Plants Erodium cicutarium
Flowering Plants Festuca rubra
Flowering Plants Gymnadenia conopsea
Flowering Plants Orchis mascula
Flowering Plants Platanthera chlorantha
Flowering Plants Poa pratensis
Flowering Plants Prunella vulgaris
Species scientific name English common name Species group
Calidris alpina Dunlin Birds
Charadrius hiaticula Ringed Plover Birds
Crex crex Corncrake Birds
Gallinago gallinago Snipe Birds
Haematopus ostralegus Oystercatcher Birds
Tringa totanus Redshank Birds
Vanellus vanellus Lapwing Birds
Bellis perennis Flowering Plants
Coeloglossum viride Flowering Plants
Dactylorhiza purpurella Flowering Plants
Erodium cicutarium Flowering Plants
Festuca rubra Flowering Plants
Gymnadenia conopsea Flowering Plants
Orchis mascula Flowering Plants
Platanthera chlorantha Flowering Plants
Poa pratensis Flowering Plants
Prunella vulgaris Flowering Plants

Other classifications

Classification Code Habitat type name Relationship type
Palaearctic Habitat Classification 200112 1A.1 Machair same
CORINE Land Cover 2.3.1. Pastures n/a
Phase 1 habitat classification (UK) 1993 H65 Sand-dune: dune grassland wider
Biodiversity Action Plan Priority Habitats (UK) 29 Machair same
For relation to plant communities (syntaxa), see Vegetation types
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