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From Population Viability Analysis to Coviability of Farmland Biodiversity and Agriculture

Lauriane Mouysset, Luc Doyen () and Frédéric Jiguet ()
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Frédéric Jiguet: CERSP - Conservation des espèces, Restauration et Suivi des Populations - CNRS - Centre National de la Recherche Scientifique - UPMC - Université Pierre et Marie Curie - Paris 6 - MNHN - Muséum national d'Histoire naturelle

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Abstract: Substantial declines in farmland biodiversity have been reported in Europe for several decades. Agricultural changes have been identified as a main driver of these declines. Although different agrienvironmental schemes have been implemented, their positive effect on biodiversity is relatively unknown. This raises the question as to how to reconcile farming production and biodiversity conservation to operationalize a sustainable and multifunctional agriculture. We devised a bioeconomic model and conducted an analysis based on coviability of farmland biodiversity and agriculture. The coviability approach extended population viability analyses by including bioeconomic risk. Our model coupled stochastic dynamics of both biodiversity and farming land-uses selected at the microlevel with public policies at the macrolevel on the basis of financial incentives (taxes or subsidies) for land uses. The coviability approach made it possible for us to evaluate bioeconomic risks of these public incentives through the probability of satisfying a mix of biodiversity and economic constraints over time. We calibrated the model and applied it to a community of 34 common birds in metropolitan France at the small agricultural regions scale. We identified different public policies and scenarios with tolerable (0–0%) agroecological risk and modeled their outcomes up to 2050. Budgetary, economic, and ecological (based on Farmland Bird Index) constraints were essential to understanding the set of viable public policies. Our results suggest that some combinations of taxes on cereals and subsidies on grasslands could be relevant to develop a multifunctional agriculture. Moreover, the flexibility and multicriteria viewpoint underlying the coviability approach may help in the implementation of adaptive management.

Keywords: bioeconomics; farming; French bird breeding survey; land-use modeling; public policies; viability (search for similar items in EconPapers)
Date: 2014
Note: View the original document on HAL open archive server: https://hal.archives-ouvertes.fr/hal-01565883
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Published in Conservation Biology, Wiley, 2014, 28 (1), pp.187-201. ⟨10.1111/cobi.12184⟩

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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:hal-01565883

DOI: 10.1111/cobi.12184

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