Fig. 1: Quadratic and Olson model comparison.

Prediction ranges (grey shading) given by Eq. (4) along with the All Eucalypt Forests and Representative Forests datasets of ref. ¹: a All Eucalypt Forests (all data); b All Eucalypt Forests (data with \(t\, < \,40\)); c Representative Forests (all data); d Representative Forests (data with \(t\, < \,40\)). The red and blue curves are the quadratic model prediction \({X}_{{Quad}}\left(t\right)\) (Eq. 5) and the Olson model prediction \({X}_{{Olson}}\left(t\right)\) (Eq. 6), respectively, determined using least-squares regression. The black curves represent the quadratic component (Eq. 2) of the model values calculated using the corresponding parameter values in ref. ¹, Table 2.