Summary
This second-order meta-analysis synthesises evidence from 98 existing meta-analyses and 5160 original studies to demonstrate that agricultural diversification practices enhance multiple ecosystem services—including pollination, pest control, nutrient cycling, soil fertility, and water regulation—without reducing crop yields. The analysis reveals context-dependent outcomes, with aboveground-targeted practices particularly improving pest control and water regulation, while belowground-focused approaches enhance nutrient cycling, soil fertility, and water regulation. The findings support widespread adoption of diversification as a strategy to reconcile biodiversity conservation with food security.
UK applicability
The meta-analysis synthesis spans global evidence and includes European studies, making findings broadly applicable to UK cropping systems. UK farmers and policymakers may apply these conclusions to inform diversification strategies in temperate arable and mixed farming systems, though specific outcomes will depend on local soil, climate, and management contexts.
Key measures
Biodiversity indices; pollination services; pest control efficacy; nutrient cycling; soil fertility indicators; water regulation; crop yield; effect sizes and variability across 41,946 comparisons between diversified and simplified cropping practices
Outcomes reported
The study quantified the impact of diversification practices on above- and belowground biodiversity, ecosystem services (pollination, pest control, nutrient cycling, soil fertility, water regulation), and crop yields through systematic review and meta-analysis of 5160 original studies.
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