An ecological model describing the processes of growth, recruitment and mortality was developed using the EMBRAPA SFC dataset from Amazonian Brazil. The model was implemented in the SYMFOR framework and calibrated and tuned with simulations of primary forest dynamics. The model was tested by comparing data with simulations of logged-over forest dynamics. This document describes the data and development of the model, including species groups and the sub models for growth, recruitment and mortality. These were integrated within the SYMFOR framework for evaluation and application. Results of typical simulations are presented as to enable assessment of the performance of the model.