Fig. 1
From: Developing accurate prediction systems for the terrestrial environment
Long-term data showing the decline in the abundance of large old trees since 1997 in the Mountain Ash forests of south-eastern Australia. The figure shows temporal changes in abundance based on field-based re-measurements of trees to 2011. Projected tree abundance after 2011 is based on 14-year time steps in a Markov-chain model for transition probabilities of trees based on their deterioration in condition and eventual collapse. Projections are made to 2067 when new cohorts of large old trees will first start to develop in Mountain Ash forests. The diagram also shows different projections for the future abundance of large old trees in response to additional fire and ongoing logging in the Mountain Ash forest (see [9] for further details)