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. 2015 Jun 1;10(6):e0129528. doi: 10.1371/journal.pone.0129528

Table 3. Mean gravimetric water content (g g-1) in experimental plots at 45 cm depth.

Shade Treatment Exposed Plots Shaded Plots
Water Treatment None (0 mm) Low (100 mm) Average (323 mm) High (721mm) None (0 mm) Low (100 mm) Average (323 mm) High (721mm)
Water content (g g-1) at end of water application 0.013 0.030 0.069 0.078 - 0.028 0.058 0.070
Number of Samples 1 2 3 3 0 3 3 3
Water content (g g-1) at 30 days after end of water application - 0.021 0.036 0.049 0.018 0.028 0.030 0.033
Number of Samples 0 3 3 3 1 3 3 3

Treatments marked with (-) could not be sampled because sand was too dry and collapsed before the target depth could be reached. Differences in number of samples per treatment also reflect difficulties in sampling from some plots because of dry sand. Water treatments were: high (721 mm), average (323 mm) and low (100 mm), corresponding to La Niña, neutral and El Niño conditions in Northwest Costa Rica.