This report discusses the problems involved in developing an environmental suitability model to manage three large carnivore populations in the Alpine region, for the bear, the lynx and the wolf. The aim is to identify sensitive areas, both in terms of areas particularly suitable for the survival of the species and those which represent broad unsuitable patches) and connecting corridors. It is based on the results obtained by the 'Large Carnivores Conservation Areas in Europe' (LCCA) project developed by the Istituto di Ecologia Applicata (IEA) of Rome.