How wolverine food caching behavior supports winter survival and why maintaining cache access is critical for welfare.
Wolverine winter welfare depends critically on the food caching behavior that has allowed them to survive in one of Earth most challenging environments. Cache quality — the preservation provided by snow temperature and depth — determines whether cached food remains edible when retrieved. Climate change reducing snowpack affects both the insulating quality of caches and their persistence through winter, potentially causing wolverines to lose food stores they depend on. Wolverines that exhaust cached food during winter experience nutritional stress at a time of year when alternative prey is most scarce. Protecting both wolverine territory integrity and the snowpack conditions that enable effective caching is essential for winter welfare.