Preserving local biodiversity through crop diversification

Strobl, Eric

doi:10.1111/ajae.12265

Cited by 16 publications

(18 citation statements)

References 112 publications

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“…Li et al (2020) find a negative effect of neonicotinoid insecticides on bird diversity in the United States using an instrumental variable approach. A second study by Strobl (2021) establishes a positive correlation between crop diversity and bird diversity in the United States. However, to our knowledge, our paper is the first study to estimate the causal impact of farm size on biodiversity at the landscape scale.…”

Section: Introductionmentioning

confidence: 99%

“…Large farms are associated with large fields (Lesiv et al, 2019; Samberg et al, 2016) and therefore with lower amounts of edge habitat relative to the crop area with demonstrably negative effects on biodiversity (Clough et al, 2020; Fahrig et al, 2015; Martin et al, 2019; Sirami et al, 2019). Large farms are also associated with reduced land cover and crop diversity (Batáry et al, 2017; Ricciardi et al, 2021) with potentially negative consequences for biodiversity (Strobl 2021). Such land cover simplification arises when land or crop cover is more homogeneous within than across farms and fields.…”

Section: Introductionmentioning

confidence: 99%

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A bird's eye view of farm size and biodiversity: The ecological legacy of the iron curtain

Noack

Larsen

Kamp

et al. 2021

American J Agri Economics

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Agriculture is a major threat to global biodiversity. A common claim is that large-scale agro-industrial farming is mainly responsible for the biodiversity decline, while smaller family farms are more wildlife friendly. Here we leverage a natural experiment along the former inner German border to estimate the causal impact of farm size on biodiversity. We combine land cover data with bird diversity data to establish the mechanisms through which farm size affects bird diversity. Our main results show that the increase in farm size at the former inner German border reduces bird diversity by 15%. The results suggest further that the decline is the result of land cover simplification rather than land use intensification.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A bird's eye view of farm size and biodiversity: The ecological legacy of the iron curtain

Noack

Larsen

Kamp

et al. 2021

American J Agri Economics

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show abstract

“…More rigorous empirical studies, on the other hand, tend to focus more on identifying the land-use and economic impacts of AES, for example, [27,28,29], neglecting biodiversity outcomes. While not focused on evaluating the impacts of AES, recent research using bird data has applied econometric methods to the evaluation of relationships between bird diversity and, respectively, insecticides [30], crop diversity [31], and farm size [32].…”

Section: Introductionmentioning

confidence: 99%

“…Chabé-Ferret and Subervie, 2013;Bertoni et al, 2020;Wuepper and Huber, 2022), neglecting biodiversity outcomes. While not focused on evaluating the impacts of AES, recent research using bird data has applied econometric methods to the evaluation of relationships between bird diversity and, respectively, insecticides (Li et al, 2020), crop diversity (Strobl, 2022), and farm size (Noack et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Biodiversity-food trade-offs when agricultural land is spared from production

Palmer

Groom

Sileci

et al. 2023

Preprint

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The Kunming-Montreal Global Biodiversity Framework proposes to address biodiversity decline by expanding areas under conservation. Biodiversity conservation in agricultural landscapes, the world’s predominant land use, could involve sparing, or setting aside, agricultural land from production, implying biodiversity-food trade-offs. Employing bird species and agricultural data, we undertake a novel empirical analysis of such trade-offs on a set-aside scheme implemented in England between 1992-2007. Expanding set-aside increases bird species abundance and richness by, respectively, 1.2-2.1% and 0.7-0.9%, but has no impact on diversity (Shannon-Wiener index). These effects are discontinuous, subject to thresholds in set-aside areas. A minimum 3% of agricultural land set aside is required for a positive effect on biodiversity while 13% of agricultural land generates a 15-25% and 30-35% increase in abundance and richness, respectively. Estimates of short- and long-run effects show that impacts are larger in the long-run. Expanding set-aside is also associated with a 10-17% decline in cereal output, with weak evidence of an attenuating land-sparing effect on yields. Our results suggest that although biodiversity-food trade-offs are likely in high-yield agricultural landscapes, such as those in England, the risk of a reduction in food supply could be minimised in settings where there is still scope for intensification.

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Section: Introductionmentioning

confidence: 99%

Biodiversity-food trade-offs when agricultural land is spared from production

Palmer

Groom

Langton³

2022

Preprint

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The post-2020 Global Biodiversity Framework proposes to address biodiversity decline by expanding areas under conservation. Biodiversity conservation in agricultural landscapes, the world's predominant land use, could involve sparing, or setting aside, agricultural land from production, implying biodiversity-food trade-offs. Employing bird species and agricultural data, we undertake a novel empirical analysis of such trade-offs on a set-aside scheme implemented in England between 1992-2007. Expanding set-aside increases bird species abundance and richness by, respectively, 1.2-2.1% and 0.7-0.9%, but has no impact on diversity (Shannon-Wiener index). These effects are discontinuous, subject to thresholds in set-aside areas. A minimum 3% of agricultural land set aside is required for a positive effect on biodiversity while 13% of agricultural land generates a 15-25% and 30-35% increase in abundance and richness, respectively. Estimates of short- and long-run effects show that impacts are larger in the long-run. Expanding set-aside is also associated with a 10-17% decline in cereal output, with weak evidence of an attenuating land-sparing effect on yields. Our results suggest that although biodiversity-food trade-offs are likely in high-yield agricultural landscapes, such as those in England, the risk of a reduction in food supply could be minimised in settings where there is still scope for intensification.

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Preserving local biodiversity through crop diversification

Cited by 16 publications

References 112 publications

A bird's eye view of farm size and biodiversity: The ecological legacy of the iron curtain

A bird's eye view of farm size and biodiversity: The ecological legacy of the iron curtain

Biodiversity-food trade-offs when agricultural land is spared from production

Biodiversity-food trade-offs when agricultural land is spared from production

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