Extended Data Fig. 1: Impacts of a subsequent drought are more deleterious than an initial drought for trees.
From: Divergent forest sensitivity to repeated extreme droughts
Growth declines (Δring width index; a) from 1,208 sites in the International Tree-Ring Data Bank to an initial drought (Initial, light red) and subsequent drought (Subseq, dark red), categorized by drought severity of both droughts via the Standardized Precipitation Evapotranspiration Index (SPEI) thresholds. Identical data as Fig. 1a but shown as a violin plot. Blue dots are the mean. Numbers in italics are the number of chronologies in each bin. b, Growth declines differences from the International Tree-Ring Data Bank by clade where negative numbers indicate a more deleterious effect of the subsequent drought (left-to-right Nchronologies = 106, 410, 40, 174, 56, 291, 34, 257). Stars indicate statistically significant differences (*p < 0.05, **p < 0.01, ***p < 0.001).
