Abstract
Birds provide important ecosystem services in many ecosystems, including important pest control effects on productive systems. The typically low bird diversity observed in intensive agricultural landscapes renders them more susceptible to pests that cause important economic losses. Although these pests have traditionally been controlled using chemical methods, recent work suggests that bird-mediated biological control is an effective and environmentally friendly form of ecological intensification practice. We conducted a global meta-analysis to synthesize the effect of the exclusion of wild birds on crop damage, pest abundance, and crop yield in agroecosystems. We used 179 case studies from 55 articles, from which we found that wild birds reduced crop damage and pest abundance, but increased crop yield. The positive effect of birds as biological control agents was found to be significant on conventional farms using traditional chemical methods but not on organic farms. Our analysis shows that embracing ecological intensification practices such as using wild bird species as pest control represents a win–win strategy for agriculture and biodiversity.
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The original database and literature search and data used to perform this meta-analysis is freely available from the figshare digital repository: https://doi.org/10.6084/m9.figshare.14307860
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Figshare digital repository: https://doi.org/10.6084/m9.figshare.14307860.
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Acknowledgements
We thank Megan Garfinkel, Camila Cassano, Valerie Linden, Solene Guenat, Pierre Mineau, and Daniel García for sharing their original data. We are grateful to Jeremy Cusack for his comments on the manuscript. This study was funded by the ANID/PIA/ACT192027 project “Ecological Intensification: Integrating knowledge of ecosystem services to promote sustainable agriculture in Chile”.
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This study was funded by ANID/PIA/ACT192027. PD-S acknowledge the funding support from ANID/REGIONAL/CERES/R19A1002.
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Díaz-Siefer, P., Olmos-Moya, N., Fontúrbel, F.E. et al. Bird-mediated effects of pest control services on crop productivity: a global synthesis. J Pest Sci 95, 567–576 (2022). https://doi.org/10.1007/s10340-021-01438-4
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DOI: https://doi.org/10.1007/s10340-021-01438-4