Table 1. Descriptive means (± SD) of each network metric in each habitat and the results of the Analysis of Variance testing the effects of the presence of balsam, Impatiens glandulifera Royle, on the structure of pollen transfer networks.

	Mean ± SD		Analyses of Variance
	Invaded	Non-invaded	F(1,18)	p-value
Number of interactions	11135.71 ± 5638.23	11148.71 ± 6374.05	2.11e-05	0.99
Linkage density	1.57 ± 0.52	1.43 ± 0.31	0.45	0.51
Connectance	0.05 ± 0.03	0.04 ± 0.02	0.39	0.54
H`2	0.89 ± 0.15	0.96 ± 0.03	1.05 §	0.30
Nestedness	18.9 ± 9.9	17.05 ±7.45	0.27	0.61
Modularity	0.59 ± 0.16	0.63 ± 0.16	0.5	0.49

^§ Results are from the Kruskal-Wallis test (χ² and p-value) fitted for the analyses of the non-normal H`2 data.