Fig. 2From: Hydraulic failure and repair are not routine in treesThe number of xylem vulnerability curves (VCs) published each year increases exponentially thanks to fast methods developed during the last two decades (plain blue curve). However, these techniques can be vitiated by an open-vessel artifact and the number of suspicious curves (i.e., having an exponential shape) is now reaching a critical level (dashed red curve). Data from Choat et al. (2012)Back to article page