Road traffic fatalities can have a more significant impact on the viability of small hedgehog populations than previously understood, according to new research. A study led by Dr. Lauren Moore from NTU suggests that for populations with fewer than 15 individuals, even one or two roadkill incidents per year could have devastating consequences.
Previous assumptions often held that high roadkill rates were the primary concern, with smaller numbers presumed to cause little harm. However, this research highlights that the overall health and size of a hedgehog population, including reproductive rates, other mortality causes, and food availability, are crucial factors. "This does not tell us the full picture," Dr. Moore stated, emphasizing the variability among populations.
Conservationists are calling for measures to bolster these vulnerable groups. Strategies include providing habitats that can support more animals and facilitating safe movement to increase population viability without requiring hedgehogs to cross busy roads. Simple actions such as maintaining wild areas in gardens for food and nesting, and creating "hedgehog highways"—gaps in fences—can help hedgehogs move safely between areas and connect with other animals.
The findings underscore the need for targeted support for hedgehog populations until more effective methods for reducing collisions are developed. The researchers advocate for better understanding and support for these animals in their natural habitats.