Table 1.

Product–moment correlations between the three centrality estimates used in this study and the per-plant abundance and diversity of insects (n = 502 plants, all populations pooled). *p < 0.05, **p < 0.01, ***p < 0.001. The population-wise analyses showed similar results, and we show only the overall analysis.

	degree	closeness	betweenness
pollinator richness	0.0741 ± 0.0049***	0.0522 ± 0.0053***	0.0120 ± 0.0009***
pollinator visitation rate (visit h−1)	0.0028 ± 0.0012*	0.0026 ± 0.0013 n.s.	−0.0006 ± 0.0002*
large bees (%)	0.1784 ± 0.0378 n.s.	0.2099 ± 0.0410***	0.0108 ± 0.0068 n.s.
small bees (%)	0.2367 ± 0.0381***	0.2560 ± 0.0412***	0.0094 ± 0.0068 n.s.
wasps (%)	0.1032 ± 0.0532 n.s.	0.0560 ± 0.0577 n.s.	0.0129 ± 0.0095 n.s.
bee flies (%)	0.2996 ± 0.0378***	0.3063 ± 0.0410***	0.0135 ± 0.0068*
hover-flies (%)	0.0711 ± 0.0550 n.s.	0.1206 ± 0.0596*	0.0047 ± 0.0099 n.s.
beetles (%)	0.1190 ± 0.0376**	0.1693 ± 0.0408***	0.0124 ± 0.0067 n.s.
butterflies (%)	0.0409 ± 0.0482 n.s.	0.0770 ± 0.0523 n.s.	0.0018 ± 0.0087 n.s.