Table 3. Results of pairwise contrasts to analyze the mean differences on the visitation rate (number of visits per plant per 30 min) by bumblebee groups 1 and 3, averaged for two areas of Northern Spain (Ancares and Pontón, the orange and yellow morph population respectively) and per treatment (control, local transplant, foreign transplant).

We marked in bold the statistically significant mean differences between the pair of treatments (P < 0.05). Abbreviations: Trans-local, local transplants; Trans-foreign, foreign transplants; and control, unmanipulated groups. Note that we only included results from pairwise contrasts that showed significant mean differences between pair of treatments (i.e., pollinator groups 1 and 3).

Floral visitors	Pair of treatments		Mean-difference	S.E.	d.f.	P
Group 1	Control	Trans-foreign	−5.090	2.801	1	0.069
	Control	Trans-local	1.390	2.331	1	0.551
	Trans-foreign	Trans-local	6.480	2.733	1	0.018
Group 3	Control	Trans-foreign	18.720	4.369	1	<0.001
	Control	Trans-local	8.210	4.992	1	0.100
	Trans-foreign	Trans-local	−10.510	3.736	1	0.005