DCA ordination biplots ordinating samples (a, b) and species (c, d) recorded in relevés taken from sites occupied by the Euphydryas aurinia butterfly, on the first and second ordination axes after controlling for site identity. See Table 1 for ordination results. In the plots a and b, past sampling is denoted by open circles, present sampling by black squares; the lines connecting past and present samples can be viewed as vectors of vegetation change. Plots c and d each present 50 best-fitting species. Vascular plants: P1 - Agrostis canina, P2 – A. capillaris, P3 – A. stolonifera, P4 - Angelica sylvestris, P5 - Anthoxanthum odoratum, P6 - Bistorta major, P7 - Briza media, P8 - Cardamine pratensis, P9 - Carex echinata, P10 – C. nigra, P11 – C. pallescens, P12 – C. panicea, P13 – C. rostrata, P14 - Cirsium heterophyllum, P15 – C. palustre, P16 - Crepis paludosa, P17 - Deschampsia cespitosa, P18 - Epilobium palustre, P19 - Equisetum fluviatile, P20 – E. palustre, P21 - Eriophorum angustifolium, P22 - Festuca ovina, P23 – F. rubra, P24 - Filipendula ulmaria, P25 - Galium palustre, P26 – G. uliginosum, P27 - Holcus lanatus, P28 - Hypericum maculatum, P29 - Juncus articulatus, P30 – J. conglomeratus, P31 – J. effusus, P32 - Lathyrus pratensis, P33 - Luzula campestris, P34 – L. multiflora, P35 - Lychnis flos-cuculi, P36 - Mentha arvensis, P37 - Myosotis nemorosa, P38 - Nardus stricta, P39 - Poa pratensis, P40 – P. trivialis, P41 - Potentilla erecta, P42 – P. palustris, P43 - Ranunculus acris, P44 – R. auricomus, P45 - Rumex acetosa, P46 - Succisa pratensis, P47 - Tephroseris crispa, P48 - Valeriana dioica, P49 - Veronica chamaedrys, P50 - Viola palustris. Mosses: M1 - Aulacomnium androgynum, M2 – A. palustre, M3 - Brachythecium albicans, M4 – B. mildeanum, M5 – B. rivulare, M6 – B. rutabulum, M7 - Breidleria pratensis, M8 - Bryum pseudotriquetrum s. l., M9 - Calliergonella cuspidate, M10 - Campylium stellatum, M11 – Cephalozia bicuspidate, M12 - Ceratodon purpureus, M13 - Cirriphyllum piliferum, M14 - Climacium dendroides, M15 - Dicranella heteromalla, M16 - Dicranum montanum, M17 – D. polysetum, M18 – D. scoparium, M19 - Fissidens osmundoides, M20 - Hygroamblystegium humile, M21 - Chiloscyphus coadunatus, M22 - C. cuspidatus, M23 – C. polyanthos, M24 – C. profundus, M25 - Leptodictyum riparium, M26 - Plagiomnium affine, M27 – P. ellipticum, M28 – P. undulatum, M29 - Plagiothecium denticulatum s. l., M30 - Pleurozium schreberi, M31 - Polytrichum commune, M32 – P. longisetum, M33 - Pseudocampylium radicale, M34 - Rhizomnium punctatum, M35 - Rhytidiadelphus squarrosus, M36 - Sphagnum capillifolium, M37 – S. fallax, M38 – S. fimbriatum, M39 – S. flexuosum, M40 – S. girgensohnii, M41 – S. magellanicum agg., M42 – S. palustre, M43 – S. riparium, M44 – S. teres, M45 – S. warnstorfii, M46 - Straminergon stramineum, M47 - Thuidium assimile, M48 – T. delicatulum, M49 – T. recognitum, M50 - Tomentypnum nitens.