In the last fifty years, 91 reintroductions and reinforcements of Alpi
ne marmots have occurred in is mountainous areas. Most of the reintrod
uctions failed except those attempted in the Alps and Pyrenees, probab
ly because of no formal planning. Increase of species territory and la
ck of data on population dynamics suggest a limit to reintroductions a
nd the maintainance of well-planned reinforcements.