Table 4. Boot-strapping results for the five species with multiple strains that we studies.

Trait	delta AICc lower CI	delta AICc upper CI
T. Optimum	33.14	45.93
Niche width	-4.93	15.96
Max growth rate	49.26	59.79

If the entire 95% confidence interval of AICc values exceeded zero, we concluded that species identity was a useful predictor and that species differed in the distribution of the trait.