Table 1.

A summary of the linear mixed model for the effects of plant-specific diversity (mono-, di- and tricultures) and the presence of mutualistic ants (two levels: presence or absence) on plant performance. The effect of the particular combination of pine species (three mono-, three di- and three tricultures) nested in each diversity treatment was included in the model. Ant treatments took four months. Initial height was used as covariate. Significant p-values (p < 0.05) are indicated in bold.

			final height		above-ground biomass
	DFnum	DFden	F	p-value	F	p-value
ant	1	3	27.47	0.014	0.67	0.474
diversity	2	47	25.59	<0.001	2.04	0.141
ant × diversity	2	47	4.23	0.021	1.09	0.344
combination	6	47	12.40	<0.001	6.52	<0.001
ant × combination	6	47	0.61	0.722	0.82	0.559
initial height	1	47	44.81	<0.001	2.36	0.131