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Figure S1. Xylem area-specific hydraulic conductivities (Ks; kg s−1 MPa−1 m−1) as a function of imposed xylem pressure (MPa) via centrifuge in SAD (black; N = 6) and healthy (white; N = 6) branches. Ks presented at far right is the native Ks prior to vacuum infiltration.

Figure S2. Vulnerability curves of healthy (white; N = 6) and SAD (black; N = 6) branches presented as Percent Loss of Conductivity (PLC) as a function of imposed xylem pressure (MPa). (A) Vulnerability curve where PLC is calculated from flushed (embolism removed) hydraulic conductivity. (B) Vulnerability curve where PLC is calculated from native (in situ embolism still present) hydraulic conductivity.

Figure S3. Basal-area specific hydraulic conductivity (Ks; kg s−1 MPa−1 m−1) as a function of xylem tension (MPa) in healthy (white; N = 15) and SAD (black, N = 15) ramets, combined over June–August 2011 sampling events.

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