Article Figures & Data
Figures
- Figure 1.
Plot location based on elevation and distance between plots, with percent slope between plots listed. Plots are designated by number (P1–P5) followed by elevation in m.
- Figure 2.
Side wall slopes at each plot location with error bars. Vertical bars with different lettering are statistically different at the p < 0.05 level.
- Figure 3.
Monthly precipitation totals (cm) during the experimental period, along with yearly totals (cm) and historical monthly total-values (50 yr. averages). All precipitation was measured as rainfall.
- Figure 4.
Average monthly soil volumetric water contents (cm3 water/cm3 soil) along with error bars at the 10 (), 25 (Δ) and 43 (□) cm depths during the experimental period. All depths on all dates were significantly different from each other except on those dates that are marked with different letters (p < 0.05).
- Figure 5.
Percent survival of E. virginensis over time based on treatments, along with cumulative monthly precipitation minus monthly potential evapotranspiration (cm). No seeds were produced from plants growing in control or hydrogel treatments.
- Figure 6.
Probability of survival of E. virginensis over time based on elevation.
- Figure 7.
Probability of survival of E. virginensis over time based on imposed treatments.
- Figure 8.
Probability of survival of E. virginensis over time based on slope wash locations. Probablity of survival in upper elevation head water locations (A) vs. lower elevation wash locations (B).
Tables
Plot Ks (Slope) Ks (Wash) Rating P1.985m 0.36 1.07 Very Slow/Slow P2.984m 1.92 0.18 Moderately Slow/Very Slow P3.967m 0.68 0.61 Slow/Slow P4.955m 0.47 25.10 Slow/Moderately Rapid P5.936m 1.47 412.39 Moderately Slow/Very Rapid Site P1.985m P2.984m P3.967m P4.955m P5.936m P1.985m — 0.970 0.026 0.047 0.210 P2.984m — — 0.034 0.068 0.250 P3.967m — — — — 0.320 P4.955m — — — — 0.390 P5.936m — — — — — - Table 3.
Probability of survival p values based on Logrank tests for comparison of treatments.
Treatment Cage Cage + Hydrogel Hydrogel Control Cage — 0.140 0.220 0.046 Cage + Hydrogel — — 0.003 0.001 Hydrogel — — — 0.280 Control — — — — - Table 4.
Probability of survival p values based on Logrank tests for comparison of slope versus wash sites.
Slope vs. Wash All Wash Wash (Plots P1, P2) Wash (Plots P3, P4, P5) All Slopes 0.001 — — Slopes (P1, P2) — 0.90 — Slopes (P3, P4, P5) — — 0.001
