Research overview: lion ranging and edge effects at protected-area boundaries

A recurring theme in lion movement research is the edge effect, the way protected-area boundaries shape mortality and movement, and this overview synthesizes the evidence. GPS telemetry shows that lions ranging near reserve edges face elevated risk from trophy hunting, conflict with pastoralists, and retaliatory killing, so that boundaries function as ecological traps drawing animals from safe cores into danger. The overview discusses how the size and shape of protected areas, the permeability of their edges, and the intensity of surrounding human activity determine how much of a lion population is exposed, and how removing territorial males can destabilize pride dynamics through infanticide. Understanding edge effects has influenced debates over hunting quotas, buffer zones, and reserve design. Movement data make clear that what happens at the boundary, not only the interior, governs lion population health.