Fig. 6a and 6b. Predation rate on sticky cards and aboveground ant activity. For each habitat (OG = old grassland; NG = new grassland; CN = cereal field near NG; CF = cereal field far from NG) the (a) predation rate on sticky cards per plot summed across all 4 runs (n per 240 flies) and the (b) ant activity as the number of aboveground foraging ants per sampling plot summed across all 3 runs (observed workers per 6 m² and 24 min in total) is shown. Boxes represent CIs, lines represent mean and whiskers represent ranges. Letters indicate results of Tukey’s post hoc test of fixed factor levels (GLMM analysis). Different letters denote significant (p < 0.05) differences between habitats.