Extended Data Fig. 1: The effect of plasticity on demographic and competitive rates.
a) Maximum finite rate of growth (λi); and b) sensitivity of focal species i to interspecific competition (αij). Plots show the posterior probability densities of the difference in these competition model parameters between treatments, accounting for correlations in the posterior distributions of the parameters. The vertical dotted lines indicate zero difference between treatments. Positive values indicate parameter values are higher in the heterospecific plasticity-induction treatment. Higher λi and lower αij for focal species i in the heterospecific plasticity-induction treatment will increase invasion growth rates (see equation 3), and therefore the arrows below the plots indicate the direction of parameter change that would favour coexistence by increasing invasion growth rates. Posterior probabilities for increases in each species maximum finite rate of growth (λi) were 0.98 and 0.97 for S. polyrhiza and L. minor, respectively. Posterior probabilities for decreases in each species’ sensitivity to interspecific competition were 0.92 and 0.68 for S. polyrhiza and L. minor, respectively. Point estimates (means) and variability (standard deviations and 2.5 & 97.5 quantiles) calculated from the posterior distributions for each competition model parameter are provided in Supplementary Table 2.
