Re-introduction of the brown bear in the central Alps, Trentino, Italy

Summary

The brown bear (Ursus arctos), functionally extinct in Italy's central Alps by the late 1990s with just two to three relict animals surviving in Trentino, was restored through the Life Ursus project, which translocated nine Slovenian bears into the Adamello Brenta Nature Park between 1999 and 2002 following a feasibility study confirming roughly 1,700 km2 of suitable habitat and majority local public support. Bears were fitted with VHF collars for twice-daily tracking during an initial telemetry phase, later supplemented from 2003 by non-invasive genetic monitoring of hair and scat, coordinated by the park, the Provincia Autonoma di Trento and Italy's national wildlife research institute, with hunters, WWF, farmers and beekeepers engaged as stakeholders and a compensation fund established for bear-caused damage. Seven of the nine founders survived and reproduced, and the population grew rapidly through high reproduction to an estimated 43-48 bears by 2012, with survival rates over 80-90% and range expansion into former bear habitat; however, 14 bears were found dead, 13 more went undetected by genetic monitoring for years, gene flow with the adjacent Slovenian population has not been established, and genetic diversity has begun declining, with five of 30 reconstructed litters showing inbreeding. Difficulties included higher-than-expected human-bear conflict, human-caused mortality, and a marked, communication-campaign-resistant decline in public support tied to problem-bear management failures. The project rates itself partially successful, citing strong demographic recovery undermined by genetic isolation and eroding public backing.