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Achieving win-win outcomes for biodiversity and yield through diversified farming

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Title Achieving win-win outcomes for biodiversity and yield through diversified farming
 
Creator Jones, Sarah K.
Sánchez Bogado, Andrea Cecilia
Beilloun, Damien
Juventia, Stella
Mosnier, Aline
Remans, Roseline
Estrada-Carmona, Natalia
 
Subject biodiversity
yields
diversification
agroecology
literature reviews-review articles
biodiversidad
diversificación-diversificación de cultivos
agroecología
 
Description To leverage agriculture's potential to better benefit both people and nature, policymakers need clear messages about which farming practices positively impact biodiversity and yields, and when trade-offs arise. Existing reviews analyse effects of different agricultural practices on either biodiversity or yield, without considering interactions. Here, we applied multinomial and quantile regression models to synthesize global evidence of synergies and trade-offs between biodiversity and yield, using 764 paired observations (from 43 studies across 18 countries) comparing diversified and simplified farming systems. Results show that farmland diversification led to win-win outcomes for biodiversity and yield in 23% of cases, while a win for biodiversity coupled with a loss in yield was the most likely outcome (28% of cases). Yield and biodiversity responses were negatively correlated, meaning that diversifying farming systems solely in pursuit of production goals is unlikely to lead to markedly better outcomes for biodiversity, or vice-versa. Yet certain situations made win-win significantly more likely, including when crop and animal production, or multiple diversification practices (e.g., intercropping and cover crops), were combined, when no agrochemicals were applied, when diversification occurred in temperate climates, and when diversification enhanced below-ground taxa. Win-win was also more likely than lose-lose when biodiversity was measured as richness or richness-evenness, but not abundance, suggesting that in certain contexts diversified farming can effectively enhance species diversity while increasing agricultural yields. Overall, crop commodity group and bioclimatic location were among the most important contextual factors influencing the likelihood of a synergy or trade-off between biodiversity and yield, and diversification that accounts for these is less likely to lead to unexpected outcomes. Our novel method and up-to-date review show that farmland diversification frequently leads to better outcomes for biodiversity and/or agricultural production when compared to monocultures and farmland stripped of natural habitat, opening a pathway to more sustainable agricultural production.
 
Date 2022-12
2023-01-10T15:09:12Z
2023-01-10T15:09:12Z
 
Type Journal Article
 
Identifier Jones, S.K.; Sanchez, A.C.; Beillouin, D.; Juventia, S.D.; Mosnier, A.; Remans, R.; Estrada Carmona, N. (2022) Achieving win-win outcomes for biodiversity and yield through diversified farming. Basic and Applied Ecology, Online first paper (21 December 2022) 49 p. ISSN: 1439-1791
1439-1791
https://hdl.handle.net/10568/126750
https://doi.org/10.1016/j.baae.2022.12.005
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format 49 p.
application/pdf
 
Publisher Elsevier BV
 
Source Basic and Applied Ecology