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Figure S1. Proportion of seeds found 13–15 day following release versus distance from the release point (bars) shown with fitted curves (dotted lines) produced by the following functions: (a) lognormal; (b) Wald; (c) negative exponential; (d) Laplace; (e) 2Dt; (f) Gaussian; and (g) inverse power.

Table S1. Strength of evidence for competing models of the dispersal kernel of cheatgrass seeds over bare soils. The wr value indicates the probability that the same function would perform best again if the same suite of models was tested with a different data set (Burnham & Anderson, 2002). In the winning model, the lognormal, the parameters took on the following values: a = 2.886; b = 0.0729.

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