Table 2.

Summary of linear mixed effects analyses of regressions between leaf carbon and nitrogen concentrations and total and feeding type-specific herbivory and pathogen infestation rates (fixed factor). Analyses were conducted separately for arbuscular mycorrhizal (AM) communities, ectomycorrhizal (EM) communities, and communities with both mycorrhizal types. Estimates (β) represent the change. Marginal (only fixed effects, R² _m) and conditional (fixed and random effects, R² _c) R²-values are given. Significant effects are given in bold (P < 0.05; df = 1).

	AM					EM					Both
	β	SE	χ2	R2 m	R2c	β	SE	χ2	R2 m	R2c	β	SE	χ2	R2 m	R2c
Total herbivory Leaf C	−1.90	12.07	0.01	< 0.01	0.87	6.62	10.87	0.30	0.01	0.60	5.50	13.89	0.15	0.01	0.54
Chewer	43.68	31.56	0.99	0.06	0.82	−10.52	18.16	0.30	0.01	0.47	7.96	33.49	< 0.01	< 0.01	0.34
Hole-feeder	−58.20	43.27	2.15	0.10	0.34	−10.87	30.90	0.20	< 0.01	0.04	−6.02	26.18	0.06	< 0.01	< 0.01
Miner	11.78	47.95	0.14	< 0.01	0.80	17.26	30.21	0.09	0.01	0.46	5.34	43.12	0.07	< 0.01	0.53
Total pathogens	−18.50	18.54	1.22	0.06	0.59	−25.95	8.15	8.95	0.27	0.27	−3.38	12.24	0.14	< 0.01	0.40
Rust	−58.42	38.82	2.48	0.10	0.73	−20.54	8.43	5.07	0.18	0.18	−4.57	32.21	0.04	< 0.01	0.52
Mildew	−4.73	42.74	0.03	< 0.01	0.49	−9.86	26.33	0.20	< 0.01	0.63	4.40	33.82	0.02	< 0.01	0.79
Total herbivory Leaf N	0.68	2.09	0.14	< 0.01	0.85	4.64	3.46	1.86	0.03	0.58	2.06	2.76	0.62	0.01	0.49
Chewer	−5.41	5.83	1.00	0.02	0.65	5.18	6.25	0.75	0.02	0.40	10.29	7.28	2.10	0.05	0.30
Hole-feeder	−12.07	10.27	1.51	0.05	0.32	6.78	12.53	0.31	0.01	0.01	4.64	7.40	0.41	0.01	0.01
Miner	18.25	8.23	4.14	0.07	0.79	10.06	10.27	0.98	0.03	0.38	3.98	8.57	0.26	< 0.01	0.51
Total pathogens	−7.18	3.46	4.37	0.10	0.61	−10.69	3.48	8.67	0.25	0.34	−2.97	2.60	1.39	0.03	0.36
Rust	−12.83	7.07	3.43	0.06	0.72	−10.40	3.31	8.76	0.25	0.42	−1.48	6.46	0.06	< 0.01	0.51
Mildew	−5.13	8.76	0.13	0.01	0.51	−3.71	8.50	0.21	< 0.01	0.63	−0.19	5.84	< 0.01	< 0.01	0.78