Table 2: Mean 18O signatures and differences in
diverse hydrological compartments respect to precipitation and simulated
recharge waters. Bold differences are significant at the 1%
level and underlined differences are significant at the 5% level
(Student’s t test, two tails). VW means volume-weighted, TW means
time-weighted and FW means flow-weighted statistics. Soil water was
sampled with low suction lysimeters. Sh and dp groundwater at VP05
refers to samples taken when water table levels were respectively
shallower or deeper than 2.25 m.