AE_WP_Erythrophleum

Collected AE signals and water potential used to construct an acoustic vulnerability curves for E. ivorense ansd E. suaveolens. The AE signals were cumulated over the measurement period, and averaged over 5 minutes. The endpoint of the VCAE was based on the local maximum in the third derivative, following the strongest decrease in the first derivative. Cumulative acoustic emissions were then rescaled between zero and the defined endpoint to obtain a relative percentage of cavitation-related AE (%). The continuous water potential x-axis of the VCAE was obtained from a segmented linear regression relation between point measurements of xylem water potential, and xylem shrinkage monitored by dendrometers.