Table 3. Results of PLS regression analyses examining the influence of landscape variables (2011) and habitat management and landscape variables (2012) on pollinator visitation and pollen deposition.

2011 models included 21 landscape variables (FOREST, GRASSLAND, FORAGE, FIELD, FRUITVEG, URBAN AND TURF at 500 m, 1,000 m and 1,500 m radii surrounding each sampling site); 2012 models included the same landscape variables along with the categorical variable habitat management (GRASS CONTROL, ANNUAL OR PERENNIAL). For each model we report the Q² (the proportion of the variance in the response variables that can be predicted by the model), the R²Y (the proportion of the variance in the response variable that is explained by the model) and R²X (the proportion of the variance in the matrix of predictor variables that is used in the model) for the first two model components (t₁ and t₂).

			t 1			t 2
Year	PLS model	X variable(s)	Q 2	R 2 Y	R 2 X	Q 2	R 2 Y	R 2 X
2011	Visitation	Apis mellifera	0.17	0.31	0.41	0.12	0.39	0.56
		Bombus spp.
		Peponapis pruinosa
2012	Visitation	Apis mellifera	−0.12	0.12	0.32	−0.28	0.29	0.45
		Bombus spp.
		Peponapis pruinosa
2012	Bumblebee visitation	Bombus spp.	0.08	0.42	0.32	−0.58	0.63	0.42
2011	Deposition	Pollen grains	0.04	0.47	0.23	−0.44	0.56	0.55
2012	Deposition	Pollen grains	0.06	0.39	0.31	−0.54	0.47	0.5