Fig. 4. Leaf CP and IVOMD for different canopy heights (20, 40, and 60 cm) and layers (top 5-cm layer, T-5 cm; upper layer, UL; lower layer, LL) of limpograss across years. Means are not different if followed by the same letter (P > 0.1). Orthogonal polynomial contrasts are indicated for the effect of canopy height; L = linear, Q = quadratic,
P
0.1, * P
0.05, ** P
0.01.