Extended Data Fig. 2: Soil moisture content and temperature in control and warmed plots.
From: Soil carbon loss by experimental warming in a tropical forest
a, b, Soil volumetric moisture content (a) and soil temperature (b), for the period after the warming treatment began (December 2016 to December 2018), partitioned by soil depth (columns) and season (rows). Box plots are standard (Tukey) plots, where the centre line represents the median across the five plots over the study period, the lower and upper hinges represent the first and third quartiles, and whiskers represent + 1.5 the interquartile range. c, d, Temporal patterns in soil volumetric moisture content (c) and soil temperature (d), relative to when the warming treatment began (relative day 0; temperature temporarily increased in warmed plots before this during the testing phase). The points are daily means of soil profile and the error bars represent one standard error of the variation by plot (n = 5). The box (Tukey) plots show the median temporal value over sequential 100-day periods. The shaded areas represent dry seasons (1 January to 1 April). Treatment effects on annual or seasonal soil-profile moisture content were not significant; treatment effects on soil temperature were significant (repeated-measures ANOVA, P < 0.001; Extended Data Table 4).
