The Society for Ecological Restoration has started a “Wednesday Webinar” series to promote information sharing and professional development in response to conference cancellations. One of the first invited speakers was WTI Research Scientist Marcel Huijser, who led a webinar on March 25 on “Open Access: Where Road Ecology and Ecological Restoration Converge.” The presentation focused on new approaches designed to shift from providing safe crossing opportunities for large mammals to restoring habitat connectivity for a wide range of species groups. The webinar is available on the ECR Webinar webpage.
The following day, Marcel
also presented via webinar at the University of Montana, which has transitioned
its courses to online delivery. He gave
a remote lecture on road ecology to the students of WILD 370, Wildlife Biology,
a course taught by Professor Mark Hebblewhite, who leads the UM Ungulate
The final report is now available for a wildlife vehicle collision study conducted for the California Department of Transportation. Road Ecology Research Ecologist Marcel Huijserand Research Associate James Begley authored the final report for “Large Mammal-Vehicle Collision Hot Spot Analysis,” which provides guidance on the implementation of mitigation measures aimed at reducing collisions with large wild mammals along all state managed highways in California, with an emphasis on mule deer. These analyses identified the road sections that had the “highest” concentration of deer-vehicle crashes and mule deer carcasses. The hot spots were prioritized based on parameters related to human safety, biological conservation, and economics. Finally, the researchers provided practical guidelines for the implementation of mitigation measures and suggest mitigation strategies for the highest-ranking hot spots in each Caltrans district.
While wildlife fencing and crossing structures have been shown to reduce the effect of roads on medium and large animals, less is known about how these structures affect the movements of small mammals. The Canadian Journal of Zoology has published “Factors affecting the permeability of road mitigation measures to the movement of small mammals,” an article by Adam Ford and WTI Research Scientist Tony Clevenger, based on research they conducted on four small mammal species along the Trans-Canada Highway Corridor in Banff National Park. The article includes recommendations for culvert design and maintenance to promote usage of these structures by small mammal species to cross highways.
Citation: Ford, Adam T. and Clevenger, Anthony P. Factors affecting the permeability of road mitigation measures to the movement of small mammals. Canadian Journal of Zoology, 2019, 97(4): 379-384, https://doi.org/10.1139/cjz-2018-0165
Citation: Arnold, E. M., Hanser, S. E., Regan, T. , Thompson, J. , Lowe, M. , Kociolek, A. and Belthoff, J. R. (2019), Spatial, road geometric and biotic factors associated with Barn Owl mortality along an interstate highway. Ibis, 161: 147-161. doi:10.1111/ibi.12593
WTI has released a new report investigating Key Deer mortality along a segment of Highway 1 within the National Key Deer Refuge in Florida. Road Ecologists Marcel Huijser and James Begley found that 75% of all reported mortalities in this area were related to collisions with vehicles. The team also investigated and mapped how the locations of collision “hotspots” have changed since the installation of wildlife fencing, underpasses, and deer guards. The final report (“Exploration of opportunities to reduce Key Deer Mortality along US Highway 1 and other roads, National Key Deer Refuge, Florida, USA”) summarizes the pros and cons of eight different strategies aimed at reducing collisions with Key Deer on Highway 1.