Agroecosystem multifunctionality of apple orchards in relation to agricultural management and landscape context

Abstract

Managing agricultural landscapes to simultaneously provide multiple ecosystem services is crucial to meet both environmental and societal demands. This not only requires surveying and modeling many ecosystem services at the same time, but also quantifying the impact of agricultural management and the surrounding landscape on agroecosystem multifunctionality. In this study, we assessed the agroecosystem multifunctionality of 12 organic apple orchards and 12 orchards with integrated pest management (IPM) using field data on 23 indicators for agronomical, ecological and economic performance. Furthermore, the ecological performance indicators were also quantified in 12 semi-natural grasslands to obtain a benchmark for the overall impact of agricultural management on biodiversity and biodiversity-based ecosystem services. We found that organic farming at the field scale had relatively limited beneficial effects on ecological performance, yet it provided farmers with a similar income relative to IPM, despite lower yield levels. Overall orchard multifunctionality did not differ between organic and IPM orchards, regardless of hypothetical stakeholder interests, and a clear trade-off between biodiversity and yield was found within both orchard systems. Structural equation models revealed that in addition to orchard management, also within-orchard location, local biodiversity and characteristics of the surrounding landscape were directly and/or indirectly driving ecosystem service indicator levels. Surrounding semi-natural habitat and landscape complexity enhanced biodiversity and biodiversity-based ecosystem services, and the higher provisioning of several services in the semi-natural benchmark further emphasizes the importance of preserving semi-natural habitats within the agricultural landscape. Overall, our results indicate that reconciling ecological, agronomical and economic goals requires a vision that goes beyond the field-level agricultural management. Therefore, we argue that policy measures should not only address local farm management, but should also target actions towards other stakeholders such as land managers and agricultural markets.

Keywords

• Agroecosystem multifunctionality
• Ecosystem services
• Integrated pest management
• Landscape context
• Organic farming