Bee communities and pollination services in adjacent crop fields following flower removal in an invasive forest shrub

摘要: The habitat boundaries between crops and seminatural areas influence bee movements pollination services to crops. Edges also provide favorable conditions for invasive plants, which may usurp pollinators reduce visitation native or crop plants. Alternatively, floral displays of alien plants facilitate, increase, the success adjacent by attracting more area. Therefore, bees from habitats should vary with presence resources distance edges. To test hypothesis that forest shrubs affect community in fields, we conducted a 2-yr field experiment along forest-crop edges at five isolated remnants. We removed flower buds dominant shrub, Lonicera maackii (Amur honeysuckle), paired removals controls intact flowers. community, their services, rates were quantified 200-m gradient into an using pan traps sentinel cucumber Impacts dependent functional traits. Larger visited fewer flowers removal plots, corresponded decreased compared plots honeysuckle distances >100 m Small-bodied weaker flying frequently closer edge increased distances <100 m L. plots. After 2 yr, abundance species richness within across all distances. High diversity production 200 m Our findings suggest dense suppressed forest-edge communities but attracted large-bodied generalist bees, effective pollinators. This study helps explain how life histories attributes can predict either facilitation suppression response resources.