Wildlife crossings are proving to be invaluable in reducing animal-vehicle collisions, safeguarding animal populations, and maintaining ecosystem connectivity. Patricia Cramer, a wildlife ecologist with extensive research experience in this area, sheds light on the significance of these structures and provides fascinating insights into animal behavior and adaptation.
Cramer emphasizes that wildlife crossings are essential for animal movement, as roads and vehicles have disrupted their natural habitats. Her research spans almost two decades, and she has observed a wide range of species utilizing these structures, from amphibians and reptiles to large mammals such as elk, deer, and black bears.
Cramer’s observations reveal that mule deer often act as ‘trainer animals,’ demonstrating the use of crossings to other species. Overpasses have been particularly effective for elk, pronghorn antelope, and bighorn sheep. Research indicates that within a few years, wildlife crossings can significantly reduce collisions along nearby highways by 75-90%.
Cramer makes a compelling economic argument for investing in wildlife crossings, highlighting the cost savings from reduced collision-related deaths, injuries, and vehicle damage. She notes that some structures have paid for themselves within five years.
With the effects of climate change and the availability of federal funding, Cramer sees an opportune time for transportation officials to prioritize the construction of more wildlife crossings. She advocates for ‘climate-informed’ crossings that consider the potential shifts in animal ranges due to climate change.
Cramer’s passion for wildlife crossings stems from her personal connection to the issue. Her father, a civil engineer who built roads, instilled in her a deep understanding of the impact of infrastructure on the natural world. She believes that wildlife crossings offer an opportunity to mitigate the negative effects of roads and restore the balance of ecosystems.
