JVAU9NAA

2765

5 janvier 2021 17:06

5 janvier 2021 17:06

Organic farming aims to be wildlife-friendly, but it may not benefit wildlife overall if much greater areas are needed to produce a given quantity of food. We measured the density and species richness of butterflies on organic farms, conventional farms and grassland nature reserves in 16 landscapes. Organic farms supported a higher density of butterflies than conventional farms, but a lower density than reserves. Using our data, we predict the optimal land-use strategy to maintain yield whilst maximizing butterfly abundance under different scenarios. Farming conventionally and sparing land as nature reserves is better for butterflies when the organic yield per hectare falls below 87% of conventional yield. However, if the spared land is simply extra field margins, organic farming is optimal whenever organic yields are over 35% of conventional yields. The optimal balance of land sparing and wildlife-friendly farming to maintain production and biodiversity will differ between landscapes.

None

• AB - Spécifique
• FREDO durabilité
• FREDO environnement
• GEO Royaume-Uni
• biodiversity
• biodiversité
• conservation
• easement
• land use
• protected area
• restoration
• sustainable agriculture
• trade-off
• wildlife-friendly farming
• yield

Ecology Letters

13

1358-1367

11/2010

1 novembre 2010

10.1111/j.1461-0248.2010.01528.x Le DOI est une URL unique de référencement d'une publication. Il est donc plus fiable et permanent qu'une URL classique

1461023X L’ISSN est un code de 8 chiffres servant à identifier les journaux, revues, magazines, périodiques de toute nature et sur tous supports, papier comme électronique.