Research overview: population viability analysis for big cats

Population viability analysis, PVA, uses demographic and genetic models to estimate the probability that a population will persist over a given time, helping conservationists assess risk and compare management options for big cats. This overview surveys how PVA is applied to felids, incorporating birth and death rates, environmental and demographic variability, inbreeding, and threats such as poaching to project population trajectories and extinction risk. Studies use PVA to evaluate how interventions, including reducing mortality, boosting connectivity, or supplementing populations, change viability, and to estimate minimum viable population sizes. Researchers caution that PVA outputs depend heavily on data quality and assumptions and are best used for relative comparison rather than precise prediction. The overview frames PVA as a key quantitative tool for prioritization and management, allowing conservationists to identify which populations are most at risk and which actions would most improve the odds of long-term survival for the world's big cats.