A comparison of three methods for estimating call densities of migrating bowhead whales using passive acoustic monitoring
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 t...
Published in: | Environmental and Ecological Statistics |
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2021
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/a-comparison-of-three-methods-for-estimating-call-densities-of-migrating-bowhead-whales-using-passive-acoustic-monitoring(d8b8403c-9e48-425b-aa81-e3624967ea76).html https://doi.org/10.1007/s10651-021-00506-3 https://research-repository.st-andrews.ac.uk/bitstream/10023/23572/1/Oedekoven_2021_EES_comparison_methods_CC.pdf |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/d8b8403c-9e48-425b-aa81-e3624967ea76 2024-06-23T07:51:40+00:00 A comparison of three methods for estimating call densities of migrating bowhead whales using passive acoustic monitoring Oedekoven, Cornelia Sabrina Marques, Tiago A. Harris, Danielle Thomas, Len Thode, Aaron M. Blackwell, Susanna B. Conrad, Alexander S. Kim, Katherine H. 2021-06-15 application/pdf https://research-portal.st-andrews.ac.uk/en/researchoutput/a-comparison-of-three-methods-for-estimating-call-densities-of-migrating-bowhead-whales-using-passive-acoustic-monitoring(d8b8403c-9e48-425b-aa81-e3624967ea76).html https://doi.org/10.1007/s10651-021-00506-3 https://research-repository.st-andrews.ac.uk/bitstream/10023/23572/1/Oedekoven_2021_EES_comparison_methods_CC.pdf eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/a-comparison-of-three-methods-for-estimating-call-densities-of-migrating-bowhead-whales-using-passive-acoustic-monitoring(d8b8403c-9e48-425b-aa81-e3624967ea76).html info:eu-repo/semantics/openAccess Oedekoven , C S , Marques , T A , Harris , D , Thomas , L , Thode , A M , Blackwell , S B , Conrad , A S & Kim , K H 2021 , ' A comparison of three methods for estimating call densities of migrating bowhead whales using passive acoustic monitoring ' , Environmental and Ecological Statistics . https://doi.org/10.1007/s10651-021-00506-3 Distance sampling Non-independent detections Plot sampling Spatially explicit capture-recapture article 2021 ftunstandrewcris https://doi.org/10.1007/s10651-021-00506-3 2024-06-13T01:16:46Z 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 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. Article in Journal/Newspaper Beaufort Sea bowhead whale University of St Andrews: Research Portal Environmental and Ecological Statistics 29 1 101 125 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Distance sampling Non-independent detections Plot sampling Spatially explicit capture-recapture |
spellingShingle |
Distance sampling Non-independent detections Plot sampling Spatially explicit capture-recapture Oedekoven, Cornelia Sabrina Marques, Tiago A. Harris, Danielle Thomas, Len Thode, Aaron M. Blackwell, Susanna B. Conrad, Alexander S. Kim, Katherine H. A comparison of three methods for estimating call densities of migrating bowhead whales using passive acoustic monitoring |
topic_facet |
Distance sampling Non-independent detections Plot sampling Spatially explicit capture-recapture |
description |
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 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. |
format |
Article in Journal/Newspaper |
author |
Oedekoven, Cornelia Sabrina Marques, Tiago A. Harris, Danielle Thomas, Len Thode, Aaron M. Blackwell, Susanna B. Conrad, Alexander S. Kim, Katherine H. |
author_facet |
Oedekoven, Cornelia Sabrina Marques, Tiago A. Harris, Danielle Thomas, Len Thode, Aaron M. Blackwell, Susanna B. Conrad, Alexander S. Kim, Katherine H. |
author_sort |
Oedekoven, Cornelia Sabrina |
title |
A comparison of three methods for estimating call densities of migrating bowhead whales using passive acoustic monitoring |
title_short |
A comparison of three methods for estimating call densities of migrating bowhead whales using passive acoustic monitoring |
title_full |
A comparison of three methods for estimating call densities of migrating bowhead whales using passive acoustic monitoring |
title_fullStr |
A comparison of three methods for estimating call densities of migrating bowhead whales using passive acoustic monitoring |
title_full_unstemmed |
A comparison of three methods for estimating call densities of migrating bowhead whales using passive acoustic monitoring |
title_sort |
comparison of three methods for estimating call densities of migrating bowhead whales using passive acoustic monitoring |
publishDate |
2021 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/a-comparison-of-three-methods-for-estimating-call-densities-of-migrating-bowhead-whales-using-passive-acoustic-monitoring(d8b8403c-9e48-425b-aa81-e3624967ea76).html https://doi.org/10.1007/s10651-021-00506-3 https://research-repository.st-andrews.ac.uk/bitstream/10023/23572/1/Oedekoven_2021_EES_comparison_methods_CC.pdf |
genre |
Beaufort Sea bowhead whale |
genre_facet |
Beaufort Sea bowhead whale |
op_source |
Oedekoven , C S , Marques , T A , Harris , D , Thomas , L , Thode , A M , Blackwell , S B , Conrad , A S & Kim , K H 2021 , ' A comparison of three methods for estimating call densities of migrating bowhead whales using passive acoustic monitoring ' , Environmental and Ecological Statistics . https://doi.org/10.1007/s10651-021-00506-3 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/a-comparison-of-three-methods-for-estimating-call-densities-of-migrating-bowhead-whales-using-passive-acoustic-monitoring(d8b8403c-9e48-425b-aa81-e3624967ea76).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s10651-021-00506-3 |
container_title |
Environmental and Ecological Statistics |
container_volume |
29 |
container_issue |
1 |
container_start_page |
101 |
op_container_end_page |
125 |
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1802642795150704640 |