Extended Data Fig. 7: Sensitivity of annual growth, as derived from tree-rings, to monthly mean maximum temperatures (Tmax) of the current and past year, for 207 chronologies from 108 sites across eastern North America (Extended Data Fig. 5).
From: Warm springs alter timing but not total growth of temperate deciduous trees
Colors indicate the bootstrapped correlation between monthly Tmax and a dimensionless ring width index (RWI) derived from the multiple trees that form each chronology and emphasizing interannual variability associated with climate. Chronologies are grouped by xylem porosity and ordered by mean April Tmax. Plots are annotated to highlight records from our two focal sites, the Smithsonian Conservation Biology Institute (SCBI) and Harvard Forest (HF) (Extended Data Table 1). Figure presents the same results as Fig. 3 but extends back to include the previous year. Species analyzed and numbers of significant correlations to Tmax are summarized in Extended Data Table 3, and chronology details are given in Supplementary Table 1.
