Data supporting article Ghermandi et al. JVS

: Our study was carried out in livestock grazed grasslands affected by drought (1998), wildfire (1999), and volcanic ash deposition (2011). We analyzed annual precipitation trends, rainfall-use efficiency, and the relationship between ENSO events and seasonal climate. Before a severe drought, we monitored vegetation at three sites over 18 years (1999-2017). Only the North and South sites were affected by fire, while the unburned Control site was impacted by grazing and volcanic ash deposition.