How wildlife corridors reduce the welfare costs of habitat fragmentation, enabling animals to move safely between habitat patches, maintain gene flow, and access seasonal resources.
Wildlife corridors address welfare at a population scale — the individual welfare costs of habitat fragmentation include vehicle strike mortality, starvation in isolated patches, and the stress of attempting to navigate hostile landscapes. Animals attempting to cross roads without safe infrastructure face traumatic vehicle encounters that often result in death or serious injury. Those trapped in isolated patches face food insecurity as local resources are depleted without the ability to move to seasonal alternatives. Corridor infrastructure, including wildlife crossings, fencing systems, and protected land connections, reduces these welfare costs for millions of individual animals annually while simultaneously addressing conservation-scale population viability.