WHAT THE EVIDENCE SAYS
Across 75 biodiversity experiments, diversity most strongly enhanced grassland productivity during extreme drought in more arid locations. Forest responses were limited under similar events, with no comparable aridity interaction for heat or detectable soil-nutrient effect.
WHY IT MATTERS / OUR READ
A single biodiversity-resilience multiplier is unsuitable across biomes; rainfall regime and stress type matter.
CAVEATS / UNCERTAINTY
Productivity is only one ecosystem service and experiments differ; results do not guarantee persistence through repeated future extremes.
SOURCE
Nature Ecology & Evolution · experimental meta-analysis
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