MEDEA: Software development for prediction of Mediterranean forest degraded areas. In order to build dynamic models for the prediction and management of degraded Mediterranean forest areas it has been necessary to build and implant MEDEA, which is a computer program. This program includes the following steps (sub-programs): (a) BIOSHRUB program, which calculates the shrublands total, green and woody biomass and which establishes the time differences to calculate the growth; (b) LUCENTUM program, which builds the flux equations from the experimental data. It is based on advanced procedures of statistical multiple regression; (c) VEGETATION program, that solves the state equations with the integration methods of Euler or Runge-Kutta. Each one of these sub-programs can act as independent or as linked programs. The aim of this paper is to present and analyze this software