Higher species richness enhances yield stability in intensively managed grasslands with experimental disturbance

Eamon Haughey, Matthias Suter, Daniel Hofer, Nyncke J. Hoekstra, Jennifer C. McElwain, Andreas Lüscher & John A. Finn
Climate models predict increased frequency and severity of drought events. At an Irish and Swiss site, experimental summer droughts were applied over two successive years to grassland plots sown with one, two or four grassland species with contrasting functional traits. Mean yield and plot-to-plot variance of yield were measured across harvests during drought and after a subsequent post-drought recovery period. At both sites, there was a positive relationship between species richness and yield. Under rainfed...
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