Estimating effective detection area of static passive acoustic data loggers from playback experiments with cetacean vocalisations
Abstract Passive acoustic monitoring ( PAM ) is used for many vocal species. However, few studies have quantified the fraction of vocalisations captured, and how animal distance and sound source level affect detection probability. Quantifying the detection probability or effective detection area ( E...
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crwiley:10.1111/2041-210x.13097 2024-09-15T18:10:42+00:00 Estimating effective detection area of static passive acoustic data loggers from playback experiments with cetacean vocalisations Nuuttila, Hanna K. Brundiers, Katharina Dähne, Michael Koblitz, Jens C. Thomas, Len Courtene‐Jones, Winnie Evans, Peter G. H. Turner, John R. Bennell, Jim D. Hiddink, Jan G. Isaac, Nick Bangor University 2018 http://dx.doi.org/10.1111/2041-210x.13097 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F2041-210X.13097 https://onlinelibrary.wiley.com/doi/pdf/10.1111/2041-210X.13097 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/2041-210X.13097 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/2041-210X.13097 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Methods in Ecology and Evolution volume 9, issue 12, page 2362-2371 ISSN 2041-210X 2041-210X journal-article 2018 crwiley https://doi.org/10.1111/2041-210x.13097 2024-08-15T04:21:32Z Abstract Passive acoustic monitoring ( PAM ) is used for many vocal species. However, few studies have quantified the fraction of vocalisations captured, and how animal distance and sound source level affect detection probability. Quantifying the detection probability or effective detection area ( EDA ) of a recorder is a prerequisite for designing and implementing monitoring studies, and essential for estimating absolute density and abundance from PAM data. We tested the detector performance of cetacean click loggers (C‐ POD s) using artificial and recorded harbour porpoise clicks played at a range of distances and source levels. Detection rate of individual clicks and click sequences (or click trains) was calculated. A Generalised Additive Model ( GAM ) was used to create a detection function and estimate the effective detection radius ( EDR ) and EDA for both types of signals. Source level and distance from logger influenced the detection probability. Whilst differences between loggers were evident, detectability was influenced more by the deployment site than within‐logger variability. Maximum distance for detecting real recorded porpoise clicks was 566 m. Mean EDR for artificial signals with source level 176 dB re 1 μPa @ 1m was 187 m., and for a recorded vocalisation with source level up to 182 dB re 1 μPa was 188 m. For detections classified as harbour porpoise click sequences the mean EDR was 72 m. The analytical methods presented are a valid technique for estimating the EDA of any logger used in abundance estimates. We present a practical way to obtain data with a cetacean click logger, with the caveat that artificial playbacks cannot mimic real animal behaviour and are at best able to account for some of the variability in detections between sites, removing logger and propagation effects so that what remains is density and behavioural differences. If calibrated against real‐world EDA s (e.g., from tagged animals) it is possible to estimate site‐specific detection area and absolute density. We highlight ... Article in Journal/Newspaper Harbour porpoise Wiley Online Library Methods in Ecology and Evolution 9 12 2362 2371 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Passive acoustic monitoring ( PAM ) is used for many vocal species. However, few studies have quantified the fraction of vocalisations captured, and how animal distance and sound source level affect detection probability. Quantifying the detection probability or effective detection area ( EDA ) of a recorder is a prerequisite for designing and implementing monitoring studies, and essential for estimating absolute density and abundance from PAM data. We tested the detector performance of cetacean click loggers (C‐ POD s) using artificial and recorded harbour porpoise clicks played at a range of distances and source levels. Detection rate of individual clicks and click sequences (or click trains) was calculated. A Generalised Additive Model ( GAM ) was used to create a detection function and estimate the effective detection radius ( EDR ) and EDA for both types of signals. Source level and distance from logger influenced the detection probability. Whilst differences between loggers were evident, detectability was influenced more by the deployment site than within‐logger variability. Maximum distance for detecting real recorded porpoise clicks was 566 m. Mean EDR for artificial signals with source level 176 dB re 1 μPa @ 1m was 187 m., and for a recorded vocalisation with source level up to 182 dB re 1 μPa was 188 m. For detections classified as harbour porpoise click sequences the mean EDR was 72 m. The analytical methods presented are a valid technique for estimating the EDA of any logger used in abundance estimates. We present a practical way to obtain data with a cetacean click logger, with the caveat that artificial playbacks cannot mimic real animal behaviour and are at best able to account for some of the variability in detections between sites, removing logger and propagation effects so that what remains is density and behavioural differences. If calibrated against real‐world EDA s (e.g., from tagged animals) it is possible to estimate site‐specific detection area and absolute density. We highlight ... |
author2 |
Isaac, Nick Bangor University |
format |
Article in Journal/Newspaper |
author |
Nuuttila, Hanna K. Brundiers, Katharina Dähne, Michael Koblitz, Jens C. Thomas, Len Courtene‐Jones, Winnie Evans, Peter G. H. Turner, John R. Bennell, Jim D. Hiddink, Jan G. |
spellingShingle |
Nuuttila, Hanna K. Brundiers, Katharina Dähne, Michael Koblitz, Jens C. Thomas, Len Courtene‐Jones, Winnie Evans, Peter G. H. Turner, John R. Bennell, Jim D. Hiddink, Jan G. Estimating effective detection area of static passive acoustic data loggers from playback experiments with cetacean vocalisations |
author_facet |
Nuuttila, Hanna K. Brundiers, Katharina Dähne, Michael Koblitz, Jens C. Thomas, Len Courtene‐Jones, Winnie Evans, Peter G. H. Turner, John R. Bennell, Jim D. Hiddink, Jan G. |
author_sort |
Nuuttila, Hanna K. |
title |
Estimating effective detection area of static passive acoustic data loggers from playback experiments with cetacean vocalisations |
title_short |
Estimating effective detection area of static passive acoustic data loggers from playback experiments with cetacean vocalisations |
title_full |
Estimating effective detection area of static passive acoustic data loggers from playback experiments with cetacean vocalisations |
title_fullStr |
Estimating effective detection area of static passive acoustic data loggers from playback experiments with cetacean vocalisations |
title_full_unstemmed |
Estimating effective detection area of static passive acoustic data loggers from playback experiments with cetacean vocalisations |
title_sort |
estimating effective detection area of static passive acoustic data loggers from playback experiments with cetacean vocalisations |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/2041-210x.13097 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F2041-210X.13097 https://onlinelibrary.wiley.com/doi/pdf/10.1111/2041-210X.13097 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/2041-210X.13097 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/2041-210X.13097 |
genre |
Harbour porpoise |
genre_facet |
Harbour porpoise |
op_source |
Methods in Ecology and Evolution volume 9, issue 12, page 2362-2371 ISSN 2041-210X 2041-210X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/2041-210x.13097 |
container_title |
Methods in Ecology and Evolution |
container_volume |
9 |
container_issue |
12 |
container_start_page |
2362 |
op_container_end_page |
2371 |
_version_ |
1810448293627428864 |