Q431 Schoenus nigricans fens
Description
Alkaline fens, often dominated by Schoenus nigricans, in slopes soaked by hard-water springs at mid and low elevations.
Protection
Protected by the EU Habitat Directive, mostly under the code 6410 ("Molinia meadows on calcareous, peaty or clayey-silt-laden soils (Molinion caeruleae]"). Locally, an alternative protection under 6420 ("Mediterranean tall humid grasslands of the Molinio-Holoschoenion") or under the prioritary 7210* ("Calcareous fens with Cladium mariscus and species of the Caricion davallianae") might be warranted.Floristic Composition
Frequent species
Pinguicula grandiflora
76%,
Carex lepidocarpa aggr.
71%,
Molinia caerulea
67%,
Primula farinosa
57%,
Carex davalliana
57%,
Juncus articulatus
52%,
Tofieldia calyculata
52%,
Anagallis tenella
43%,
Carex flacca
43%,
Palustriella falcata
38%,
Schoenus nigricans
38%,
Selaginella selaginoides
33%,
Carex echinata
29%,
Palustriella commutata
29%,
Parnassia palustris
24%,
Allium schoenoprasum
19%,
Equisetum ramosissimum
19%,
Pedicularis sylvatica
19%,
Veronica ponae
19%,
Soldanella alpina
19%,
Bartsia alpina
19%,
Potentilla erecta
14%,
Mentha aquatica
14%,
Juncus inflexus
14%,
Scilla verna
14%,
Plagiomnium affine
14%,
Carex panicea
14%,
Campylium protensum
14%,
Eleocharis quinqueflora
14%,
Aquilegia pyrenaica aggr.
14%,
Eriophorum latifolium
14%,
Gentiana occidentalis
14%,
Horminum pyrenaicum
14%,
Carex pulicaris
14%,
Trichophorum cespitosum
10%,
Trifolium dubium
10%,
Succisa pratensis
10%,
Isolepis setacea
10%,
Caltha palustris
10%,
Juncus acutiflorus
10%,
Agrostis schleicheri
10%,
Hypericum nummularium
10%,
Festuca rubra
10%,
Eriophorum angustifolium
10%,
Erica tetralix
10%,
Equisetum palustre
10%,
Epilobium palustre
10%,
Pinguicula lusitanica
10%,
Carex sempervirens
10%,
Viola palustris
10%
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Indicator species
Pinguicula grandiflora 0.74,
Carex lepidocarpa aggr. 0.65,
Primula farinosa 0.57,
Carex davalliana 0.57,
Tofieldia calyculata 0.52,
Carex flacca 0.42,
Molinia caerulea 0.42,
Juncus articulatus 0.39,
Schoenus nigricans 0.38,
Palustriella falcata 0.38,
Anagallis tenella 0.34,
Selaginella selaginoides 0.32,
Palustriella commutata 0.28,
Soldanella alpina 0.19,
Bartsia alpina 0.19,
Veronica ponae 0.19,
Equisetum ramosissimum 0.19,
Allium schoenoprasum 0.19,
Parnassia palustris 0.16,
Horminum pyrenaicum 0.14,
Plagiomnium affine 0.14,
Campylium protensum 0.14,
Aquilegia pyrenaica aggr. 0.14,
Gentiana occidentalis 0.14,
Eleocharis quinqueflora 0.14,
Carex pulicaris 0.14,
Juncus inflexus 0.13,
Carex echinata 0.13,
Pedicularis sylvatica 0.13,
Scilla verna 0.13,
Eriophorum latifolium 0.1,
Carex sempervirens 0.1,
Hypericum nummularium 0.1,
Agrostis schleicheri 0.1,
Festuca rubra 0.09,
Succisa pratensis 0.08,
Carex panicea 0.08,
Epilobium palustre 0.08,
Trifolium dubium 0.07,
Mentha aquatica 0.06,
Equisetum palustre 0.06,
Isolepis setacea 0.05,
Dactylorhiza elata 0.05,
Lysimachia ephemerum 0.05,
Gymnostomum calcareum 0.05,
Saxifraga aizoides 0.05,
Epipactis palustris 0.05,
Genista hispanica 0.05,
Globularia nudicaulis 0.05,
Gymnadenia conopsea 0.05,
Pimpinella siifolia 0.05
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Phytosociology
- Molinio arundinaceae-Schoenetum nigricantis
- Primulo farinosae-Caricetum lepidocarpae (Schoenetosum nigricantis)
Regional distribution
Mostly distributed in calcareous hills and mountains of the eastern half of the ecorregion, usually at lower elevations than Q41x. Less frequently it occurs in sea-cliffs on basic rocks and in Galician ultramafic outcrops.
Known occurrences and potential area of occupancy of the habitat type in the study region.
