1. Organic farming and semi‐natural habitats for multifunctional agriculture: A case study in hedgerow landscapes of Brittany.
- Author
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Boinot, Sébastien, Alignier, Audrey, Aviron, Stéphanie, Bertrand, Colette, Cheviron, Nathalie, Comment, Gwendoline, Jeavons, Emma, Le Lann, Cécile, Mondy, Samuel, Mougin, Christian, Précigout, Pierre‐Antoine, Ricono, Claire, Robert, Corinne, Saias, Grégoire, Vandenkoornhuyse, Philippe, and Mony, Cendrine
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LANDSCAPE protection , *BIODIVERSITY conservation , *AGRICULTURE , *CONSERVATION of natural resources , *HABITAT conservation , *ORGANIC farming - Abstract
Finding more sustainable ways to produce food is a major challenge for humanity in the face of biodiversity extinction and climate change. Consequently, research on the ability of agroecosystems to provide multiple functions is growing. In this regard, the relative importance of organic farming and landscape‐scale measures for improving multifunctionality has recently been debated. We investigated the effects of farming system (conventional vs. organic) at field scale, total length of hedgerows in the landscape and their interaction on the multifunctionality of 40 winter cereal fields in Brittany (France). Our multifunctionality assessment integrated 21 indicators of five agroecosystem goods: biodiversity conservation, nutrient cycling and soil structure, pest and disease regulation, food production and socio‐economic performance. Many indicators of biodiversity conservation, pest and disease regulation, and socio‐economic performance were higher in organic than in conventional systems. However, indicators of nutrient cycling and soil structure did not improve and food production was much lower in organic systems. Total hedgerow length in the landscape had less influence than organic farming on indicators, although we observed positive interactions. Granivorous carabid abundance and semi‐net margin were highest in organic fields located in well‐preserved hedgerow landscapes. Synthesis and applications. Our study suggests that field‐scale organic farming is necessary to promote biodiversity conservation and associated ecological functioning in crop fields, whereas landscape‐scale preservation of semi‐natural habitats alone is likely insufficient. Preservation of hedgerows in the landscape brings additional ecological and socio‐economic benefits for organic systems without compromising agricultural production. More broadly, our results call for more ambitious research into the myriad possible combinations of farming practices and agri‐environmental measures at both field and landscape scales, to improve both below‐ground and above‐ground functioning. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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