Variation in frond area was correlated with natural levels of light
availability (F1,32 = 16.99, p=0.0002, β= -9.663,
R2=0.35), with plants growing in more heavily shaded
sites with thicker canopy cover expressing larger fronds (Fig. 2A).
Variation in root length was correlated with water nutrient levels (both
dissolved and total Nitrogen and Phosphorus), with plants growing longer
roots in lower nutrient conditions (Fig. 2B). The variable with the most
explanatory power was total Phosphorus content (F1,32 =
27.59, p<0.0001, β= -0.10, R2=0.46). PH
failed to explain additional variation in these traits.