Distance sampling with camera traps

A novel method for estimating animal density using camera trap data has been developed, offering more accurate assessments of wildlife populations compared to traditional line transect surveys. The approach extends point-transect methods to accommodate camera trapping data, leveraging existing distance sampling theory and software. Simulations demonstrated that the method provides unbiased density estimates when accounting for periods of rest in animals. Applied to Maxwell's duikers (Philantomba maxwellii) in Taï National Park, Côte d'Ivoire, the study found higher densities than previous line transect surveys, suggesting these methods could underestimate forest ungulate populations. This advancement promises broader applicability and effectiveness in wildlife conservation efforts.

Howe, E. J., Buckland, S. T., Després‐Einspenner, M.-L., & Kühl, H. S. (2017). Distance sampling with camera traps. Methods in Ecology and Evolution, 8(11), 1558–1565. Portico. https://doi.org/10.1111/2041-210x.12790