Spatially-explicit competition indices and the analysis of mixed- species plantings with the Simile modelling environment

Individual-based modelling and analysis of forest experiments has been made more accessible to researchers with the advent of modelling environments like Simile from Simulistics.com. Individual-based analyses of tree growth data offer insights not possible with plot-based analyses, especially when the original experimental design has been compromised by mortality or other unforeseen events. The paper illustrates how Simile can be used for individual-based analyses of mixed plantings, and how it can be used to explore the consequences of the resulting statistical models. A mixedspecies planting of Eucalyptus pellita and Acacia peregrina is used to illustrate possibilities.