Figure 4: Variance components and fitted relationships between resident diversity, as indicated by resident effective species richness (ESR), and experimental treatments and consequent invader cover.Left panel (a): Variance components for the best performing model of resident ESR (sqrt-transformed). Point estimates are set on a standard deviation scale and represent the medians of the posterior distributions. Bars present 95% (wide) and 68% (narrow) credible intervals. Variance components were produced through Bayesian multilevel modelling. Point estimate scale varies compared to Fig 2a and 3a due to the square-root transformation of resident ESR.Right panels (b-d): Fitted relationships between resident diversity (square-root transformed) and b) total invader cover (scaled); c) growth season (separated by succession stage) and d) disturbance. Envelopes represent 95% confidence intervals. Points represent partial residuals. Relationships are fitted from the best performing linear mixed-effects models.