Spatial and pollinator characteristic effects on seed set following pollination treatments.

<p>Effect of insect variables (mean number and visitation rate of bumble bees, solitary bees and other insects), within-population flower density and population surface, closure and isolation on seed set resulting from open and supplemental pollination for the 14 <i>Comarum palustre</i> populations. (Degrees of freedom (d.f.) and F-values (F) of GLMMs; * P<0.05, ** P<0.01, *** P<0.001).