Table 1.

Number of natural enemies (± Standard Error) assessed during all the sampling period in the visuals observations (VO, number/1 m² × 3 min) and the beating tray samplings (BTS, number/1 m²) of the margins.

Type of Sampling	Arthropod Group	Treatment				Year		Year*Treatment
		Control Margin ± SE	Flower Margin ± SE	F1,12	p	F 1,12	p	F 1,12	p
VO	Adult hoverflies	0.384 ± 0.077	4.242 ± 0.463	109.052	<0.001	0.968	0.348	3.182	0.114
BTS	All predators	0.724 ± 0.122	2.203 ± 0.332	39.991	<0.001	1.323	0.278	0.773	0.405
	Thysanoptera	0.035 ± 0.012	0.224 ± 0.039	42.784	<0.001	6.663	0.026	2.811	0.128
	Araneae	0.321 ± 0.049	0.679 ± 0.140	6.340	0.034	0.175	0.684	0.314	0.589
	Heteroptera	0.280 ± 0.114	1.085 ± 0.307	17.482	<0.001	4.676	0.057	0.230	0.644
	Coleoptera	0.045 ± 0.009	0.139 ± 0.048	6.100	0.038	7.036	0.023	5.506	0.046
	Other predators	0.044 ± 0.015	0.074 ± 0.007	3.810	0.081	2.003	0.185	3.446	0.094
	Parasitoid wasps	0.161 ± 0.015	0.623 ± 0.083	30.017	<0.001	0.282	0.606	0.799	0.394
	Phytophagous insects	2.828 ± 0.604	4.66 ± 0.598	7.655	0.025	1.654	0.229	0.002	0.968

* Test statistics (F-value (F)) and p (likelihood ratio) are shown. Significant p values (p <0.05) are shown in bold.