Skiers, snowshoers, and snowmobilers venturing into the wilderness are affecting wolverines more significantly than previously realized, as per a recent study. Research conducted across the Columbia and Rocky Mountain ranges, including Banff National Park, revealed that regions with higher recreational activities and road presence had fewer wolverines inhabiting them.
While it was already known that wolverines tend to avoid human presence, the study indicates that the impact extends beyond merely steering clear of individuals on trails. Lead researcher Mirjam Barrueto from the University of Calgary collaborated with Parks Canada to study wolverines over 80,000 square kilometers in an area known for being ideal wolverine habitat.
Previous estimations suggested that the region could sustain around 500 to 600 wolverines, but the findings indicate that only approximately 300 wolverines currently reside there. The study highlighted that winter activities have a more pronounced impact compared to summer activities, with winter recreation leaving a larger footprint due to the expanses accessible under snow cover.
Female wolverines, especially vulnerable during the winter when they give birth and den in specific areas, can be significantly disturbed by human activities. This disturbance can lead to them abandoning food storage areas and expending energy to avoid people instead of caring for their young.
One proposed solution is identifying sensitive winter habitats and implementing temporary restrictions to keep people out during those critical months. The study also noted a decline in female wolverine numbers with an increase in roads, unlike the case with male wolverines.
Wildlife ecologist Jason Fisher, uninvolved in the study, emphasized the significance of the findings in mostly undisturbed land like the Rocky Mountains and national parks, crucial for wolverine conservation efforts. He stressed the need to address threats such as trapping, hunting, vehicle collisions, and habitat protection to prevent further declines in the wolverine population.
In conclusion, protecting wolverine habitat and managing human activities are essential steps to support wolverine conservation efforts. Fisher highlighted the resilience of wolverines in these regions over millennia and urged immediate action to safeguard their future survival.