The restoration of elk in Ontario, Canada, 1998 – 2012: research and management implications

Summary

Elk (Cervus elaphus), extirpated from Ontario during the 1800s and again driven to extinction by a mistaken 1940s-50s cull based on false fears of liver-fluke transmission to cattle, were restored between 1998 and 2001 when 443 elk imported from Alberta's Elk Island National Park were released at four sites, chosen via a habitat-suitability model and coordinated through a multi-partner program with dedicated technical committees. Captured elk were disease-tested, treated for parasites, radio-collared and ear-tagged before shipment, with a moratorium on further imports imposed in 2001 over Chronic Wasting Disease risk; Ontario remains CWD-free as of the report. Post-release research, including twelve graduate projects across four universities, tracked survival via radio telemetry, finding roughly 41% mortality between 1998 and 2004 from wolf predation, illegal shooting, vehicle collisions, infection and emaciation, though mortality declined as elk acclimated; longer pre-release holding periods improved site fidelity. Outcomes diverged sharply by site: the Bancroft North Hastings and Lake Huron North Shore populations thrived enough to support a managed hunt from 2011, while the Nipissing/French River herd suffered heavy early wolf predation before slowly recovering, and the Lake of the Woods population continued to struggle; the provincial estimate across all four core ranges stood at 648-916 elk in 2012, informing a formal Elk Management Plan adopted in 2010. Difficulties included stressful long-distance winter transport, an escape at one release site, farmer conflicts, and hybridization risk with escaped captive elk. The project rates itself partially successful, citing strong growth at two of four sites offset by wolf-driven suppression and dispersal losses at the others.