Table 2.

Explanatory variables used in the conditional log‐normal model along with the number of statistically significant metabolic features detected (after FDR correction, q‐value < 0.20)

Factor	No. of features used in the models	No. of significant features found (q < 0.20)	No. significant at p < 0.001	No. significant at p < 0.01	No. significant at p < 0.05
Geographic region	193	30	4	12	21
Geographic distance	193	9	1	8	7
Habitat type	189	4	2	4	8
Soil pH	195	8	5	3	6
Light level	188	0	0	2	3
Phenological stage	189	0	0	0	0
Leaf area	193	3	3	3	11
Damage by herbivory	193	0	0	1	8