Wolverines in the contiguous United States exist in fragmented populations with limited connectivity, requiring landscape-scale conservation to maintain viable populations through this century.
Wolverines in isolated mountain range populations face the welfare challenges of small populations: inbreeding reduces fitness over generations, causing increased disease susceptibility and reproductive failures. Individual wolverines that attempt to disperse between mountain ranges face dangerous crossings of human-dominated valleys. Those that successfully cross may face road mortality, human conflict near livestock, and the stress of exploring unfamiliar terrain. The fragmented population structure means that local disasters - disease outbreaks, severe winters, or localized habitat loss - can eliminate entire subpopulations. The Endangered Species Act listing provides some legal protection, but meaningful recovery requires maintaining and restoring connectivity between mountain range populations.