Wolverines depend on persistent spring snowpack for maternal denning — climate-driven snow loss is reducing breeding success and forcing range contraction across boreal and alpine habitats.
Wolverine welfare is tightly coupled to climate. Den collapse from melting snow exposes kits to cold and predation, causing death. Food cache loss from warm temperatures reduces kit growth and survival. Range contraction forces wolverines into smaller and more isolated territories, increasing intraspecific competition. Climate action is the most direct long-term welfare intervention. Short-term, protected area expansion can slow range contraction.