In Canada’s northern regions, residents have noticed a rise in polar bears venturing onto land, interacting with humans. Previously, it was believed that these bears, driven by hunger from dwindling sea ice, were seeking food, potentially humans. However, a recent 11-year study by University of Saskatchewan and University of Manitoba researchers challenges this assumption.
Professor Douglas Clark from the U of S School of Environment and Sustainability shared that contrary to expectations, it wasn’t just undernourished bears approaching communities. The study, based on data from trail cameras in Wapusk National Park near Churchill, Manitoba, revealed that the longer bears spent off the ice, the more likely bears of all conditions and ages were to come ashore.
Parks Canada observed polar bears showing interest in new field camps and sought to understand if the bears were attracted to humans as a food source. Clark, an experienced polar bear scientist, collaborated with researchers to analyze over 500 polar bear visits spanning 11 years. Published in Arctic Science, the study found that the bears’ increased interactions with humans were primarily due to climate change-induced sea ice reduction, pushing them closer to human settlements.
While some bears were indeed hungry, they did not exhibit predatory behavior towards humans. The research team emphasized that although starving bears pose a risk, overall, polar bears did not seem inclined to hunt humans for sustenance. Moving forward, the study aims to monitor long-term changes in polar bear behavior resulting from alterations in their environment and food availability.
Assistant Professor Alex Crawford from the U of M stressed the importance of recognizing that polar bears are not becoming more aggressive towards humans due to food scarcity. Crawford highlighted the correlation between declining sea ice and increased human-bear interactions but clarified that healthier bears were not more likely to seek out humans. The ongoing research project aims to further assess how habitat and food source modifications may impact polar bear behavior in the future.