In this study,we investigated the diversity of bumblebees and their floral resources during the late flowering season across 19 meadows near Shangri-La city in Northwest Yunnan,a renowned global biodiver-sity hotspot.We calculated the diversity index for bumblebees and measured several variables related to land-scape structure and configuration for each meadow.Generalized linear models revealed that bumblebee abundance and species richness were primarily influenced by local floral resources,whereas the Shannon di-versity index was largely determined by landscape variables,especially the percentage of woodland coverage.We further analyzed bumblebees with varying body size and tongue length,as these traits may influence re-sponses to local and landscape variables.Notably,large-bodied bumblebees showed greater sensitivity to surrounding landscape variables in relation to flight capabilities,while small-and medium-bodied bumblebees were more dependent on local floral resources and habitat connectivity.Regarding tongue length,short-tongued bumblebees predominantly utilized local floral resources,whereas medium-and long-tongued bum-blebees leveraged resources more extensively at the landscape scale,reflecting their different foraging strate-gies.This study illustrated the significant impact of flower availability and landscape characteristics on bumble-bee diversity,highlighting how flight ability and foraging strategy profoundly influence the environmental de-pendence patterns of different bumblebees.
BumblebeeDiversityFloral resourcesLandscape scaleBumblebee body sizeBumble-bee tongue lengthLate flowering season
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万方数据
