Table 1.

Model selection statistics and model averaging coefficients (full average) for flowering plant and bee biodiversity metrics.

Response	Best model	AICc	ΔAICc	Weight	Factor	Beta coefficient	P value
Bees
(a) Species richness	⁓ Plant richness + Bee abundance	121.69	0.00	0.17	Plant richness	0.148	0.021*
					Bee abundance	0.110	0.030*
(b) Abundance	⁓ % Bare soil + Plant richness	197.19	0.00	0.23	% Bare soil	0.186	0.017*
					Plant richness	0.266	0.001**
(c) Functional diversity	⁓ Plant CWM of nectar holder depth	84.18	0.00	0.13	Plant CWM of nectar holder depth	− 0.462	0.023*
(d) CWM of body size	⁓ Plant richness + Plant CWM of nectar holder depth	326.53	0.00	0.29	Plant richness	236.06	0.026*
	⁓ Plant richness + Plant CWM of nectar holder depth + Plant phylogenetic diversity	327.75	1.22	0.16	Plant CWM of nectar holder depth	393.85	< 0.001***
	⁓ Plant richness + Plant CWM of nectar holder depth + Plant functional diversity	328.10	1.58	0.13	Plant phylogenetic diversity	− 165.80	0.105ns
					Plant functional diversity	169.80	0.115ns
(e) Phylogenetic diversity	⁓ Intercept-Only	59.90	0.00	0.28	–	–	–
Flowering plants
(f) Species richness	⁓ Bee abundance + Fragmentation	106.60	0.00	0.15	Bee abundance	1.611	< 0.001***
					Fragmentation	− 0.866	0.019*
(g) Functional diversity	⁓ Fragmentation	86.52	0.00	0.22	Fragmentation	− 1.076	< 0.001***
(h) Phylogenetic diversity	⁓ Fragmentation	73.30	0.00	0.31	Fragmentation	− 0.698	0.002**
(i) CWM of nectar holder depth	⁓ Bee CWM of body size	123.71	0.00	0.24	Bee CWM of body size	2.136	< 0.001***
	⁓ Bee CWM of body size + Fragmentation	125.45	1.75	0.10	Fragmentation	− 0.203	0.693ns

ns = not significant; *P ≤ 0.05; **P ≤ 0.01; ***P ≤ 0.001.