Effect of Broadband Nature of Marine Mammal Echolocation Clicks on Click-Based Population Density Estimates

: The long-term aim of the project is to support passive acoustic monitoring (PAM) of Odontecetes. This project aims to demonstrate how the detection process of broadband clicks can be modeled for different marine mammal species and assess the magnitude of error on the estimated density due to various commonly used simplifying assumptions. Our main purposes are to quantify the bias in the population density estimate for selected species and detector due to use of the narrow band approximation in the computed propagation loss, and to understand the factors affecting the magnitude of this bias to enable extrapolation to other species and detectors.