Ratio of Drosophila suzukii to native Drosophilidae species adults captured in traps in different forest communities. The boxplots (median, 25%/75% quantiles, min and max values) show raw values for the cantons Zug (orange) and Zurich (blue). Model-derived predicted estimates are shown in purple (LS-means ± 95% CI, back-transformed from the logit scale to the original probability scale). Forest communities: 7a – GALIO ODORATI-FAGETUM TYPICUM, 19a – ABIETI-FAGETUM LUZULETOSUM, 26f/g – ACERI-FRAXINETUM MERCURIALIDETOSUM) (see Ellenberg and Klötzli 1972), FE = forest edge.