Fróðskaparrit - 01.01.2004, Blaðsíða 230

228 ALTITUDINAL DISTRIBUTION OF PLANT COMMUNITIES IN THE FAROE ISLANDS
Table 6. Details of the two communities in dwarf-shrub vegetation. For each species in the communities,
abundance and constancy are given: 6) Empetrum nigrum-Calluna vulgaris community, 7) Calluna vulgaris-
Nardus stricta community. Species in bold type are indicator species for the communities. Roman numerals from
l-V indicate the constancy of species in the community. See text forfurther details.
Comniunities 6 7
number of plots 19 18
aspect S S
vegetation cover 94 98
pH 5.2 4.9
slope (degrees) 23 9
vegetation height (cm) 15 12
number of taxa 58 45
taxa/plot 19 14
Character speeies:
Empetrum nigrum U/V 7/III
Calluna vulgaris 9/V 13/V
Nardus stricta 4/V 12/V
Narthecium ossifragum x/I 10/V
Viola riviniana 4/V
Thymus praecox 5/1V
Potentilla erecta 10/V 11/V
Agrostis capillaris 6/V 3/1V
Vaccinium myrtillus 4/1V 4/IV
Festuca vivipara 5/V l/II
Racomitrium lanuginosum x/1 10/V
Polytrichum spp. 6/V l/II
Rhytidiadelphus squarrosus 2/IV i/n
Hylocomium splendens 6/1V í/n
Juncus squarrosus x/I 8/IV
Carex panicea l/III 3/1V
Dactylorhiza maculata l/II l/IV
Carex pilulifera 1/111 2/111
Drepanocladus uncinatus x/I 2/1II
Cladonia uncialis x/I 2/III
Hypericum pulchrum 2/1II
Thuidium tamariscinum 2/III
Rhytidiadelphus loreus l/II 2/1II
Anthoxanthum odoratum 1/HI x/II
Agrostis canina l/III i/n
Polygala serpyllifolia i/m x/I
Viola palustris i/m
Alchemilla alpina l/IU
Additional spccies with constancy less tlian III: Blechnum spicant, Breutelia chrysocoma, Carex bigelowii, Carex demissa, Carex echinata, Carex nigra,
Carex pnlicaris, Cerastinm fontanum, Cetraria islandica, Cladonia arbuscula, Cladonia cervicomis, Cladonia furcata, Cladonia portentosa, Deschampsia
cespitosa, Dicranum scoparium, Eriophorum vaginatum, Euphrasia arctica, Euphrasia micrantha, Euphrasla officinalis, Euphrasia scottica, Festuca rubra,
Galium saxatilis, Hypnum cupressiforme, Isopterygium elegans, Juncus bulbosus, Listera cordata, Liverworth spp., Lotus corniculatus, Luzula multiflora,
Plagiothecium undulatum, Plantago lanceolata, Plantago maritima, Pleurozium schreberi, Prunella vulgaris, Ranunculus acris, Rhinanthus mlnor,
Rhytidiadelphus triquetrus, Selaginella selaginoides, Sphagnum spp., Trichophorum cespitosus, Veronica officinalis, Viola canina.