Effect of Osmia bicornis supplemental pollination on seed yield of forest seed orchards

Abstract Our study investigated the possibility of using red mason bee Osmia bicornis as a pollinator forest seed orchards frequently grown European trees: insect - pollinated Tilia cordata and Prunus avium . Moreover, we checked whether presence O. has an impact on pollination results Quercus petraea , which is wind pollinated. Data were collected from 8 in western Poland between 2018 2020. We assessed populations affects number mass seeds quality. Supplementing with affected yield. The generalized linear mixed models indicated that proportion viable seeds, but not mass, higher trees, when additionally added