Figure 4. (A ) Growth rates across the entire time series and (B ) for the first 8 days of the experiment (initial growth rates) of the three species for each composition separately. Means and associated standard errors across all Zn treatments (including no Zn) are presented. For initial growth rate, the interaction between composition and concentration was not significant, but for total growth rate it was (Table S2). Dashed lines are drawn to visualize the difference between the isolated setting and the two different pairings.