Fast evaluation of study designs for spatially explicit capture-recapture

Efford and Boulanger developed rapid analytical tools to evaluate and optimize camera-trap array designs for spatially explicit capture-recapture before fieldwork begins. Rather than relying on slow, repeated simulation, they derived approximations that quickly predict the precision of density estimates for a given detector layout, spacing, and expected detection parameters. This lets researchers compare candidate designs and choose configurations that meet precision targets efficiently, saving time and money. The approach is implemented in the secrdesign tools and helps avoid underpowered surveys. By making design evaluation fast and accessible, the paper improved the planning stage of SECR studies. It is a valued methodological reference for anyone optimizing camera placement to achieve reliable density estimates of carnivores and other species.