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	R2m	R2c	β	SE	χ2	R2m	R2c	β	SE	χ2	R2m	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