The predicted relative number of hollow-bearing trees ha⁻¹ (mean ±95 prediction intervals) in urban greenspace over 300 years for a range of values for variables with the greatest relative effect sizes derived from a sensitivity analysis.

<p>Variables include: the maximum standing life of trees (A); the number of seedlings ha⁻¹ (B); and the rate of hollow formation (represented by the coefficient for the probability of hollow occurrence; C). Predicted thresholds under existing management practices are provided for reference (solid circles).