In one of the three altered riparian zones, R-A2, L. tridentata has
significantly greater height (p < 0.01) and stem diameter (p < 0.01)
compared to the control, based on Welch's test R-C (Table 2). Its
mean height in R-A2 averages 2.4m(maximum of 3.7 m) compared
to an average of 1.8 m in R-C (Fig. 6). The mean stem diameters for
L. tridentata in R-A2 and R-C are 2.0 cm and 1.2 cm, respectively.
Within the desert areas, L. tridentata has statistically larger stems in
D-A1 (mean height of 1.7 m) than in D-C (mean height of 0.9 m).
R-A1 is omitted due to low sample size. Lines indicate the median
and the 10th, 25th, 75th, and 90th percentiles.