Origin effects × covariate (field experiment). Effects of origin in interaction with α-diversity (a, c) and maximum vegetation height of surrounding vegetation within the experimental plot (b). Data shown are predicted values from the model with upper and lower range. O = origin, α-Div = α-diversity, mvh = maximum vegetation height (of surrounding vegetation), SLA = specific leaf area, LDMC = leaf dry matter content. Week 6 and Week 14 indicates that the leaves for analysis were harvested after 6 weeks of experimental runtime or at the final harvest of the plants after the entire experimental runtime, respectively. N = 193 (a), 311 (b), 319 (c). SLA after 6 weeks was only taken for plants that had a sufficient number of healthy leaves and therefore constitutes a reduced subset. For depiction of raw data s. Suppl. material 1: fig. S4.