Fig. 3 | Nature Communications

Fig. 3

From: Sampling bias overestimates climate change impacts on forest growth in the southwestern United States

Fig. 3

Comparisons of growth variability in ITRDB vs. FIA (targeted vs. representative forest inventory) time series. a Distribution of the standard deviation (SD) of ring-width index (RWI) time series of the three focal species, with FIA vs. ITRDB data in left vs. right density strips, respectively. Species abbreviations (PSME, PIPO, and PIED) follow Fig. 1. b Difference between the median SD of ITRDB vs. surrounding FIA time series (ITRDB median SD minus FIA median SD). Contrasts are filled blue if the median ITRDB SD is significantly greater than the median FIA SD; red if the difference is significantly negative (p < 0.01, two-sided Wilcoxon test). The smoothed regression line is the expected difference between the median SD of the two samples with respect to latitude, with 95% confidence intervals

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