Wild insect diversity increases interannual stability in global crop pollinator communities
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2021
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While an increasing number of studies indicate that the
range, diversity and abundance of many wild pollinators
has declined, the global area of pollinator-dependent crops
has significantly increased over the last few decades. Crop
pollination studies to date have mainly focused on either
identifying different guilds pollinating various crops, or
on factors driving spatial changes and turnover observed
in these communities. The mechanisms driving temporal
stability for ecosystem functioning and services, however,
remain poorly understood. Our study quantifies temporal
variability observed in crop pollinators in 21 different crops across multiple years at a global scale. Using data
from 43 studies from six continents, we show that
(i) higher pollinator diversity confers greater inter-annual
stability in pollinator communities, (ii) temporal variation
observed in pollinator abundance is primarily driven
by the three-most dominant species, and (iii) crops in tropical
regions demonstrate higher inter-annual variability
in pollinator species richness than crops in temperate
regions. We highlight the importance of recognizing
wild pollinator diversity in agricultural landscapes to
stabilize pollinator persistence across years to protect
both biodiversity and crop pollination services. Shortterm
agricultural management practices aimed at
dominant species for stabilizing pollination services need
to be considered alongside longer term conservation
goals focussed on maintaining and facilitating biodiversity
to confer ecological stability.
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SENAPATHI, Deepa et al. Wild insect diversity increases inter-annual stability in global crop pollinator communities. Proceedings of the Royal Society B: biological sciences, London, v. 288, n. 1947, e20210212, 2021. DOI: 10.1098/rspb.2021.0212. Disponível em: https://royalsocietypublishing.org/doi/10.1098/rspb.2021.0212. Acesso em: 13 jan. 2023.