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dc.contributor.authorOedekoven, Cornelia
dc.contributor.authorMarques, Tiago A.
dc.contributor.authorHarris, Danielle
dc.contributor.authorThomas, Len
dc.contributor.authorThode, Aaron M.
dc.contributor.authorBlackwell, Susanna B.
dc.contributor.authorConrad, Alexander S.
dc.contributor.authorKim, Katherine H.
dc.identifier.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:
dc.description.abstractVarious 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 manually extracted from the recordings by human observers simultaneously scanning spectrograms of recordings from a given site. The large discrepancies between estimates derived using SECR and the other two methods were likely caused primarily by the manual detection procedure leading to non-independent detections among sensors, while errors in estimated distances between detected calls and sensors also contributed to the observed patterns. Our study is among the first to provide a direct comparison of the three methods applied to PAM data and highlights the importance that all assumptions of an analysis method need to be met for correct inference.en_US
dc.rightsAttribution 4.0 International*
dc.subject.otherAnimal callsen_US
dc.subject.otherAnimal vocalizationen_US
dc.subject.otherDistance samplingen_US
dc.subject.otherSpatially explicit capture-recaptureen_US
dc.subject.otherPlot samplingen_US
dc.titleA comparison of three methods for estimating call densities of migrating bowhead whales using passive acoustic monitoring.en_US
dc.typeJournal Contributionen_US
dc.subject.parameterDisciplineBirds, mammals and reptilesen_US
dc.subject.instrumentTypeacoustic tracking systemsen_US
dc.subject.dmProcessesData acquisitionen_US
dc.bibliographicCitation.titleEnvironmental and Ecological Statisticsen_US
dc.description.maturitylevelMatureen_US S. Oedekoven

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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International