Table 3.

Linear mixed-effects models testing the effect of habitat (models included locality as a random factor) on the top five chemical compounds contributing to habitat differences according to Random Forest analysis (see Fig. 4). Log normalized peak ratio areas used as input. Numerator degrees of freedom (numDF) and denominator degrees of freedom (denDF) are shown.

Compound	numDF	denDF	F	P
Dodecanoic acid (C6)	2	3	20.73	0.018
Tetradecanoic acid (C10)	2	3	19.03	0.020
n-Pentadecanoic acid (C14)	2	3	12.38	0.036
( +)-α-Tocopherol (C62)	2	3	16.12	0.025
Cholecalciferol (C65)	2	3	16.86	0.023