Assesing the influence of predator control on target and non-target carnivore populations using occupancy models

Abstract

Understanding the effects of lethal predator control on predator communities is of great interest for the conservation and wildlife management. We used camera traps and occupancy models to assess the influence of predator control on red fox (Vulpes vulpes, target species) and stone marten (Martes foina, non-target species) populations across 12 localities of central Spain. Results show that the intensity of fox control (IFC) was not associated with fox occupancy, but it was negatively related to fox detectability. On the contrary, the IFC was positively related to stone marten occupancy, but unrelated to its detectability. Habitat composition and prey availability were more closely associated with site occupancy of both species than predator control. We provide valuable information on the ecological consequences of fox control often employed as a management tool in many European game estates.