Warmer temperatures advance flowering in a spring plant more strongly than emergence of two solitary spring bee species.

ABSTRACT: Climate warming has the potential to disrupt plant-pollinator interactions or to increase competition of co-flowering plants for pollinators, due to species-specific phenological responses to temperature. However, studies focusing on the effect of temperature on solitary bee emergence and the flowering onset of their food plants under natural conditions are still rare. We studied the effect of temperature on the phenology of the two spring bees Osmia cornuta and Osmia bicornis, by placing bee cocoons on eleven grasslands differing in mean site temperature. On seven grasslands, we additionally studied the effect of temperature on the phenology of the red-list plant Pulsatilla vulgaris, which was the first flowering plant, and of co-flowering plants with later flowering. With a warming of 0.

SUBMITTER: Kehrberger S 

PROVIDER: S-EPMC6590824 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature