Fig. 2.

An illustration of possible xylem conductance curves as defined by three traits (parameters): xylem water potentials at 50 and 88% loss conductivity and a third shape parameter. Observed conductivity response curves from Q. falcata, a ring porous species, and J. virginiana, a diffuse porous species, were reproduced on the basis of data provided in Maherali et al. (2006).