A recent study reveals that wolverines in the backcountry are facing more significant impacts from skiers, snowshoers, and snowmobilers than previously recognized. Research conducted across the Columbia and Rocky Mountain ranges, including Banff National Park, indicates that areas with higher recreational activities and road presence have fewer wolverine populations.
While it was already known that wolverines tend to avoid human encounters, the study suggests that the effects extend beyond merely steering clear of people on trails. Lead researcher Mirjam Barrueto from the University of Calgary, in collaboration with Parks Canada, studied wolverines across an 80,000 square kilometer area known for its excellent wolverine habitat. Despite earlier estimations suggesting the region could support around 500 to 600 wolverines, the study findings show only approximately 300 wolverines residing there.
The study highlighted that winter activities have a more pronounced impact compared to summer activities. Barrueto emphasized the extensive reach of people into the backcountry during winter recreational pursuits, which can disrupt female wolverines, especially when caring for their young during the winter months.
The decline in female wolverine numbers coincided with an increase in road presence, indicating heightened vulnerability for these animals. Wildlife ecologist Jason Fisher from the University of Victoria emphasized the significance of the findings, particularly in relatively undisturbed landscapes like the Rocky Mountains and national parks that serve as critical habitats for wolverines.
Previous research indicated that even minor human disturbances, rather than the sheer number of individuals, can prompt wolverines to avoid an area. Barrueto stressed the importance of restricting human activities to established trails to provide wolverines with the necessary space.
Fisher underscored that beyond protecting habitats, managing threats like trapping, hunting, and vehicle collisions is essential to ensure the survival of the wolverine population. Urgent actions and conservation efforts are crucial to safeguard these resilient animals that have endured in the mountains for millennia.