The impact of modernization is seen by scholars as one of the main problems met by minority communities. Essentially, it is similar to the main problem of ecology, which deals with the impact of modern means on natural environment, whereas the former studies the impact of such means on traditional cultures, which should be preserved for the future. Case studies are interesting here, as these problems have many sides, and new description may open new views or confirm old ones. This is all the more true if we are lucky enough to have quantitative data.