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Mapping Bumblebee Community Assemblages and Their Associated Drivers in Yunnan, China
Huanhuan Chen1,2, Muhammad Naeem1,3, Licun Meng1
1College of Biological Resource and Food Engineering, Qujing Normal University, Qujing 655011, China.
Biology
|September 27, 2025
Summary
Bumblebee populations are declining globally. This study mapped bumblebee communities in Yunnan, China, identifying climate and land use as key drivers for conservation. Understanding these factors is crucial for protecting wild pollinators.
Area of Science:
- Ecology
- Conservation Biology
- Zoology
Background:
- Bumblebees are vital wild pollinators facing global population declines.
- Factors like climate change, habitat loss, and pesticide use threaten bumblebee populations.
- Understanding local bumblebee community structure and drivers is essential for effective conservation, yet data from Yunnan Province, China, is scarce.
Purpose of the Study:
- To map bumblebee community assemblages across Yunnan Province, China.
- To identify the climatic and land use/land cover (LULC) drivers shaping these assemblages.
- To provide insights for targeted local-scale conservation strategies for bumblebees.
Main Methods:
- Species distribution modeling was used to assess climatic habitat suitability for 21 bumblebee species across 125 counties.
- Ward's agglomerative cluster analysis identified six distinct biogeographic zones.
- Canonical Correspondence Analysis (CCA) assessed the impact of 12 bioclimatic and LULC drivers on bumblebee zonation patterns.
Main Results:
- Over 70% of bumblebee species exhibited highest environmental suitability in northern Yunnan.
- Temperature-related bioclimatic variables were dominant drivers for 15 species' spatial distribution.
- Precipitation-related factors significantly influenced five specific bumblebee species (B. grahami, B. impetuosus, B. lepidus, B. picipies, B. securus).
- All 12 assessed drivers played critical roles in shaping bumblebee community assemblages across the identified biogeographic zones.
Conclusions:
- This study reveals distinct bumblebee biogeographic zones in Yunnan Province.
- Climate (especially temperature) and LULC are significant drivers of bumblebee distribution.
- Findings offer crucial data for developing effective, localized conservation strategies to protect bumblebee populations in Yunnan.
