rec925-sup-0001-FigureS1.pdfPDF document69KFigure S1. Map of dune slacks in the two study areas (a: Westhoek; b: Ter Yde). The presence/absence of our study species is shown. Dune slacks where seed packets were buried are numbered.
rec925-sup-0002-FigureS2.pdfPDF document98KFigure S2. Developmental stages of germinating seeds and protocorms. (a) Normal and germinating seed; (b–e) different stadia of protocorms; and (f–g) seedlings.
rec925-sup-0003-TableS1.pdfPDF document56KTable S1. Results of the seed introduction experiment for each species and dune slack.

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