Figure 2. Assessing the bias from open-vessel artifacts. Panel (a) and (d) are individual Q. alba and L. tulipiferaembolism curves generated from samples collected in NC 85yo, Panel (b) (c) and (e) (f) are a comparison of threshold means across all samples from a one-way ANOVA between Q. alba and L. tulipiferarespectively when partitioned by ‘r’ and ‘s’ shaped curves. Error bars are \(\pm 1\) standard error of the mean. Bars not sharing the same letters denote significant differences at α = 0.05.