Figure 1. Mean interactions strength (± SE) of each species’ competitive ability (white bars) and predator tolerance (grey bars).

Higher values represent increased strength of that ecological trait. Species sharing a letter were not significantly different from each other based on Bonferroni post hoc tests (P = 0.05). The upper case letters are associated with competitive ability and the lower case letters are associated with predator tolerance. Species abbreviations are: Bo, Bodo sp.; Po, Poterioochromonas sp.; Ci, Colpidium sp.; Co, Colpoda sp.; Hr, Habrotrocha rosa.