Table 2. Standardized direct, indirect, and total effects of the overall N:P ratio SEM.

Effect of variable 1	On	Variable 2	Direct effect	Indirect effect	Total effect
Soil temperature	→	Soil water availability	−0.54	N/A	−0.54
Soil temperature	→	Soil N:P	−0.42	0.32	−0.10
Soil temperature	→	Plant diversity	0.16	0.00	0.26
Soil temperature	→	AMF colonization	−0.27	0.04	−0.23
Soil temperature	→	Plant N:P	N/A	−0.02	−0.02
Soil temperature	→	Plant biomass	0.35	0.04	0.39
Soil water availability	→	Soil N:P	−0.59	N/A	−0.59
Soil water availability	→	Plant diversity	−0.08	0.39	0.31
Soil water availability	→	AMF colonization	−0.03	−0.05	−0.08
Soil water availability	→	Plant N:P	0.26	−0.02	0.24
Soil water availability	→	Plant biomass	−0.17	−0.11	−0.28
Soil N:P	→	Plant diversity	−0.66	N/A	−0.66
Soil N:P	→	AMF colonization	0.19	−0.12	0.07
Soil N:P	→	Plant N:P	0.31	−0.34	−0.03
Soil N:P	→	Plant biomass	−0.11	0.13	0.02
Plant diversity	→	AMF colonization	0.18	N/A	0.18
Plant diversity	→	Plant N:P	0.52	−0.01	0.51
Plant diversity	→	Plant biomass	−0.16	−0.21	−0.37
AMF colonization	→	Plant N:P	−0.06	N/A	−0.06
AMF colonization	→	Plant biomass	0.15	0.03	0.18
Plant N:P	→	Plant biomass	−0.47	N/A	−0.47