Fig. 2

The fitted models for each tree (grey line) and site (red line) for air-dry density (wood density), microfibril angle (MFA) and dynamic modulus of elasticity (MOE) as a function of cambial age. The MOE threshold of 14 GPa is also shown along with the age at which this threshold is reached (dashed lines). Arrows indicate the outer boundary of corewood (CW) and the inner boundary of outerwood (OW) for wood density, and for MFA and MOE, the arrows only indicate the inner boundary of outer wood, with the limits indicated specific to each wood property