Figure 1: Experimental plot setup for measuring light
penetration. Plots were laid out in 1 m x 1 m squares divided into a 3 x
3 grid for a total of nine equal subsections within each plot. We took
three light intensity measures (µmol s-1n-2) at the center of each row directly above the
canopy, with an additional nine measurements (one in each subsection) at
the ground-level. We then calculated three measures of percentage of
light penetration for each plot by taking the mean light intensity at
the ground-level for each row and using the equation: 100 ×
(ground-level light intensity / above-canopy light intensity).