Appendix Table 2 - Heliyon

Appendix Table 2. List of plant species either present in vegetation plots (N=32) in 1995 or 2013. Plant species are marked with *: not threatened, D: poor data, V: near threatened, 1: critically endangered, 2: endangered or 3: vulnerable in order to characterize their red list status (RLS). RLS: Federal State of Schleswig-Holstein, Northern Germany; nl: not listed. Only found in 1995 Antennaria dioica Genista germanica Trifolium alperstre Helichrysum arenarium Helictotrichon pubescens Silene viscaria Agrostis vinealis Carlina vulgaris Centaurium erythraea Cynoglossum officinale Festuca tenuifolia Campanula rotundifolia Centaurea jacea Cerastium arvense Sedum maximum Solidago virgaurea Festuca lemanii Anthriscus sylvestris Bellis perennis Bromus sterilis Carpinus betulus Fallopia convolvulus Geranium columbinum Geranium molle Geum urbanum Holcus mollis Linaria vulgaris Melandrium album Phleum pratense agg. Poa annua Prunus avium juv. Rosa canina Rosa rubiginosa Trifolium medium Urtica dioica Veronica chamaedrys Veronica serpyllifolia Vicia angustifolia Viola arvensis 1

Bromus erectus was not recorded in 1995.

RLS 1 1 1 2 2 2 3 3 3 3 3 V V V V V D * * * * * * * * * * * * * * * * * * * * * *

Only found in 2013 Petrorhagia prolifera Peucedanum oreoselinum Acinos arvensis Bromus erectus1 Leontodon hispidus Linum catharticum Silene nutans Filago vulgaris Lathyrus linifolius Sclerantus perennis Aira praecox Corynephorus canescens Festuca ovina agg. Ononis repens Potentilla argentea Scleranthus annuus Arabidopsis thaliana Bromus tectorum Calamagrostis epigejos Capsella bursa-pastoris Daucus carota Festuca pratensis Fragaria vesca Galium album Galium verum Hieracium pilosella Holcus lanatus Hypericum perforatum Leymus arenarius Lolium perenne Prunella vulgaris Rumex acetosa Saxifraga tridactylites Veronica arvensis Veronica chamaedrys Vicia angustifolia Vicia hirsuta Galium verum var. ochroleucum Geranium rotundifolium

RLS 1 1 2 2 2 2 2 3 3 3 V V V V V V * * * * * * * * * * * * * * * * * * * * * -