A comparison of three methods for estimating call densities of migrating bowhead whales using passive acoustic monitoring.
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Marques, Tiago A.
Thode, Aaron M.
Blackwell, Susanna B.
Conrad, Alexander S.
Kim, Katherine H.
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Various methods for estimating animal density from visual data, including distance sampling (DS) and spatially explicit capture-recapture (SECR), have recently been adapted for estimating call density using passive acoustic monitoring (PAM) data, e.g., recordings of animal calls. Here we summarize three methods available for passive acoustic density estimation: plot sampling, DS, and SECR. The first two require distances from the sensors to calling animals (which are obtained by triangulating calls matched among sensors), but SECR only requires matching (not localizing) calls among sensors. We compare via simulation what biases can arise when assumptions underlying these methods are violated. We use insights gleaned from the simulation to compare the performance of the methods when applied to a case study: bowhead whale call data collected from arrays of directional acoustic sensors at five sites in the Beaufort Sea during the fall migration 2007–2014. Call detections were .....
JournalEnvironmental and Ecological Statistics
Sustainable Development Goals (SDG)14.a
CitationOedekoven, C.S., Marques, T.A., Harris, D., et al. (2022) A comparison of three methods for estimating call densities of migrating bowhead whales using passive acoustic monitoring. Environmental and Ecological Statistics, 29, pp.101–125. DOI: https://doi.org/10.1007/s10651-021-00506-3
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