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Bees support farming. Does farming support bees?

View ORCID ProfilePreeti S. Virkar, Ekta Siddhu, V. P. Uniyal
doi: https://doi.org/10.1101/804856
Preeti S. Virkar
1Department of Zoology, North Eastern Hill University, Shillong, Meghalaya, India
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  • For correspondence: preetivirkar85@gmail.com
Ekta Siddhu
2PGT Biology, Oak Grove School, Dehradun, Uttarakhand, India
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V. P. Uniyal
3Landscape Level Planning and Management, Wildlife Institute of India, Dehradun, India
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Abstract

Tropical regions are subjected to rapid land use changes altering species composition and diversity in communities. The non-Apis bees are vital invertebrates continued to be highly neglected in the tropics. We compared their diversity status, richness and composition across natural areas and agroecosystems in Doon valley, a subtropical-temperate landscape situated at the foothills of outer Himalayas in India. We investigated how two major habitats relate to non-Apis bee diversity, specifically seeking answers to (1) Whether natural habitat is a refuge to richer and rarer bee communities than agroecosystems? (2) Are natural habitats important for supporting wild bee populations in agroecosystems? (3) Do polyculture farms behave similar to natural habitats and therefore support richer bee communities than monoculture? Observation and pantrap sampling were used to collect data. We recorded 43 species belonging to bees of five families. The findings of our investigation demonstrate the importance of natural habitats as a potential refuge for non-Apis bees. The findings highlighted that Doon valley harboured twenty-five rare species of non-Apis bees, and natural habitats are a refuge to 11 rare specialist species (clamtest; Specialization threshold K = 2/3, Alpha level = 0.005). Natural habitat diversity in Doon valley supports bee communities in nearby agroecosystems (R2 = 0.782, SE = 0.148, P = 0.004). Polyculture practices in agroecosystems (<100m from forest H’ = 2.15; >100m from forest = 2.08) in the valley mimic natural habitats (H’ = 2.37) and support diverse non-Apis bee communities (2.08) in comparison to monocultures (<100m from forest H’ = 2.13; >100m from forest =1.56). Bees evolved with flowering plants over 120 million years and they suffice an ever-growing anthropogenic nutrition needs with their services through enhanced agricultural production in pursuit of forage. We finally recommend similar assessments of bee diversity and plants they support in different habitats and vice versa.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license.
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Posted October 14, 2019.
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Bees support farming. Does farming support bees?
Preeti S. Virkar, Ekta Siddhu, V. P. Uniyal
bioRxiv 804856; doi: https://doi.org/10.1101/804856
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Bees support farming. Does farming support bees?
Preeti S. Virkar, Ekta Siddhu, V. P. Uniyal
bioRxiv 804856; doi: https://doi.org/10.1101/804856

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