Figure 3: Interplot, intraplot, and temporally driven variance in light penetration (calculated as 100 × ground-level light intensity/above canopy light intensity; µmol s-1n-2). To quantify intraplot variation, variance was calculated within each plot for each month (N=147, median=26.2). For interplot variation, mean light penetration was calculated for each plot, and variance in these means was calculated for each month (N=3, median=77.3). Temporal variation was also quantified using mean light penetration for each plot. Variance in individual plot means across months (June, July, August) were calculated (N=49, median=57.4). Boxes represent the 25th to 75th percentiles of the data, and whiskers represent the 10th and 90th percentiles.