Use of camera-trapping to estimate puma density and influencing factors in central Brazil

Negroes and colleagues estimated puma density in the central Brazilian Cerrado using camera traps, confronting the difficulty of individually identifying pumas from their relatively unmarked coats by relying on natural body features and careful matching. They examined factors influencing detection and density, contributing data for a wide-ranging cat in a biodiversity hotspot under agricultural pressure. The study added to the sparse body of rigorous puma density estimates and underscored the methodological challenges that motivate recognition-free and partial-identity approaches for faintly marked felids. By documenting both ecological results and identification difficulties, it informed subsequent puma monitoring design. The paper is cited in puma ecology and in discussions of the limits of photographic identification for cats lacking distinctive coat patterns.