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Article Dans Une Revue Agricultural Systems Année : 2022

Beyond agroecology: Agricultural rewilding, a prospect for livestock systems

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CONTEXT: Agricultural intensification is a major cause of biodiversity loss. Biodiversity conservation and restoration generally involve human intervention. In comparison, rewilding, a radically different approach to address the erosion of biodiversity, aims to increase the ability of ecological processes to act with little or no human intervention, and thus to enhance biodiversity and the supply of ecosystem services. Rewilding, including that of agricultural systems, has been examined from ecological and social perspectives but rarely from an agricultural perspective. OBJECTIVE: In this review of the literature and case studies, we (i) analyse whether and how rewilding of agricultural systems, particularly livestock systems, can help conserve and restore biodiversity and offer new prospects, and (ii) identify research questions about rewilding of agricultural systems. METHODS: We researched literature in the Web of Science Core Collection that focussed on rewilding, agriculture, and interactions between them. We also identified agricultural rewilding projects established for at least five years in the United Kingdom (UK) to analyse their approaches and characteristics. RESULTS AND CONCLUSIONS: Agricultural rewilding is an emerging form of land use that we conceptually position on a gradient between agroecology and rewilding. It combines restoration of ecological processes with some degree of agricultural production, most often of herbivores. A selection of 11 agricultural rewilding projects in the UK had areas of 121–4402 ha. The projects targeted 48 key species/breeds, 24 of which were ecosystem engineers: 19 grazers, four pig breeds and Eurasian beavers. The main actions to enhance rewilding were extensive grazing and habitat restoration. The main economic activities were meat or animal sales, tourism and education programmes. Agricultural rewilding may provide a multifunctional model to which livestock systems with herbivores may transition to respond better to environmental concerns. However, because it may lack economic viability and conflict with local culture and traditions, government policies may be needed to encourage more farmers to adopt it. SIGNIFICANCE: Agricultural rewilding offers new prospects for livestock systems with herbivores. We identified key research questions about its relation to agroecology and rewilding, conditions necessary to implement it, its potential for plant production and its value for farmers. In addition, the forms it can take remain to be explored, and the potential influence of these forms on biodiversity, ecosystem services and environmental impacts needs to be characterised. Exploring the forms that agricultural rewilding may take requires close collaboration among ecologists, animal scientists, agronomists, and social scientists.
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hal-03662155 , version 1 (31-05-2022)

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Michael S. Corson, Aymeric Mondière, L. Morel, Hayo van Der Werf. Beyond agroecology: Agricultural rewilding, a prospect for livestock systems. Agricultural Systems, 2022, 199, pp.103410. ⟨10.1016/j.agsy.2022.103410⟩. ⟨hal-03662155⟩
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