Fig S4 . Species-level relationships between generalization, measured as degree (number of links), and A, B: number of years in which species were recorded interacting, C, D: phenophase lengths, and E, F: number of plots in which species were recorded interacting. Plant phenophases are defined as the last (maximum) minus the first (minimum) day of the year in which each species was recorded interacting with pollinators, while pollinator phenophases are defined as the last minus the first day of the year in which each species was recorded interacting with flowers. Inter-annual persistence, longer phenophases, and higher plot occurrence were associated with a higher degree. For both plants and pollinators, species that had higher inter-annual persistence were had a higher degree (A, B; for plants: R2 = 0.73, P << 0.001, for pollinators R2 = 0.61, P << 0.001). Both plant and pollinator species with longer phenophases had a higher degree (C, D; R2= 0.70, P << 0.001, for pollinators R2 = 0.56, P << 0.001). Both plant and pollinator species that were more widespread among plots were closer to the core of the nested network (E, F; R2 = 0.60, P << 0.001, for pollinators R2 = 0.57, P << 0.001). Blue shaded areas display 95% CIs around means of model estimates.