Fig. 6.
Hydraulic conductivity of tree rings versus electrical resistivity. Log–log plot of specific hydraulic conductivity raw data (KS) versus mean electrical resistivity (ER) of trees growing at high (ca. 2000 m a.s.l.; full circles) and low elevation (ca. 1600 m a.s.l.; open circles). Solid and dashed lines indicate linear regressions for high (P = 0.001, R2 = 0.288) and low elevation trees (P = 0.002, R2 = 0.261), respectively