Categorizing click trains to increase taxonomic precision in echolocation click loggers
Passive acoustic monitoring is an efficient way to study acoustically active animals but species identification remains a major challenge. C-PODs are popular logging devices that automatically detect odontocete echolocation clicks. However, the accompanying analysis software does not distinguish bet...
Published in: | The Journal of the Acoustical Society of America |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/87e5b840-f395-41d8-84ce-cb35829fe627 2023-05-15T17:06:19+02:00 Categorizing click trains to increase taxonomic precision in echolocation click loggers Palmer, K. J. Brookes, Kate Rendell, Luke 2017-08 application/pdf https://risweb.st-andrews.ac.uk/portal/en/researchoutput/categorizing-click-trains-to-increase-taxonomic-precision-in-echolocation-click-loggers(87e5b840-f395-41d8-84ce-cb35829fe627).html https://doi.org/10.1121/1.4996000 https://research-repository.st-andrews.ac.uk/bitstream/10023/12721/1/Palmer_2017_Categorizing_click_trains_JASA_AAM.pdf eng eng info:eu-repo/semantics/openAccess Palmer , K J , Brookes , K & Rendell , L 2017 , ' Categorizing click trains to increase taxonomic precision in echolocation click loggers ' , Journal of the Acoustical Society of America , vol. 142 , no. 2 , pp. 863-877 . https://doi.org/10.1121/1.4996000 Passive acoustic monitoring Odontocete Echolocation click logger article 2017 ftunstandrewcris https://doi.org/10.1121/1.4996000 2022-06-02T07:47:47Z Passive acoustic monitoring is an efficient way to study acoustically active animals but species identification remains a major challenge. C-PODs are popular logging devices that automatically detect odontocete echolocation clicks. However, the accompanying analysis software does not distinguish between delphinid species. Click train features logged by C-PODs were compared to frequency spectra from adjacently deployed continuous recorders. A generalized additive model was then used to categorize C-POD click trains into three groups: broadband click trains, produced by bottlenose dolphin ( Tursiops truncatus ) or common dolphin ( Delphinus delphis ), frequency-banded click trains, produced by Risso's ( Grampus griseus ) or white beaked dolphins ( Lagenorhynchus albirostris ), and unknown click trains. Incorrect categorization rates for broadband and frequency banded clicks were 0.02 (SD 0.01), but only 30% of the click trains met the categorization threshold. To increase the proportion of categorized click trains, model predictions were pooled within acoustic encounters and a likelihood ratio threshold was used to categorize encounters. This increased the proportion of the click trains meeting either the broadband or frequency banded categorization threshold to 98%. Predicted species distribution at the 30 study sites matched well to visual sighting records from the region. Article in Journal/Newspaper Lagenorhynchus albirostris University of St Andrews: Research Portal The Journal of the Acoustical Society of America 142 2 863 877 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Passive acoustic monitoring Odontocete Echolocation click logger |
spellingShingle |
Passive acoustic monitoring Odontocete Echolocation click logger Palmer, K. J. Brookes, Kate Rendell, Luke Categorizing click trains to increase taxonomic precision in echolocation click loggers |
topic_facet |
Passive acoustic monitoring Odontocete Echolocation click logger |
description |
Passive acoustic monitoring is an efficient way to study acoustically active animals but species identification remains a major challenge. C-PODs are popular logging devices that automatically detect odontocete echolocation clicks. However, the accompanying analysis software does not distinguish between delphinid species. Click train features logged by C-PODs were compared to frequency spectra from adjacently deployed continuous recorders. A generalized additive model was then used to categorize C-POD click trains into three groups: broadband click trains, produced by bottlenose dolphin ( Tursiops truncatus ) or common dolphin ( Delphinus delphis ), frequency-banded click trains, produced by Risso's ( Grampus griseus ) or white beaked dolphins ( Lagenorhynchus albirostris ), and unknown click trains. Incorrect categorization rates for broadband and frequency banded clicks were 0.02 (SD 0.01), but only 30% of the click trains met the categorization threshold. To increase the proportion of categorized click trains, model predictions were pooled within acoustic encounters and a likelihood ratio threshold was used to categorize encounters. This increased the proportion of the click trains meeting either the broadband or frequency banded categorization threshold to 98%. Predicted species distribution at the 30 study sites matched well to visual sighting records from the region. |
format |
Article in Journal/Newspaper |
author |
Palmer, K. J. Brookes, Kate Rendell, Luke |
author_facet |
Palmer, K. J. Brookes, Kate Rendell, Luke |
author_sort |
Palmer, K. J. |
title |
Categorizing click trains to increase taxonomic precision in echolocation click loggers |
title_short |
Categorizing click trains to increase taxonomic precision in echolocation click loggers |
title_full |
Categorizing click trains to increase taxonomic precision in echolocation click loggers |
title_fullStr |
Categorizing click trains to increase taxonomic precision in echolocation click loggers |
title_full_unstemmed |
Categorizing click trains to increase taxonomic precision in echolocation click loggers |
title_sort |
categorizing click trains to increase taxonomic precision in echolocation click loggers |
publishDate |
2017 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/categorizing-click-trains-to-increase-taxonomic-precision-in-echolocation-click-loggers(87e5b840-f395-41d8-84ce-cb35829fe627).html https://doi.org/10.1121/1.4996000 https://research-repository.st-andrews.ac.uk/bitstream/10023/12721/1/Palmer_2017_Categorizing_click_trains_JASA_AAM.pdf |
genre |
Lagenorhynchus albirostris |
genre_facet |
Lagenorhynchus albirostris |
op_source |
Palmer , K J , Brookes , K & Rendell , L 2017 , ' Categorizing click trains to increase taxonomic precision in echolocation click loggers ' , Journal of the Acoustical Society of America , vol. 142 , no. 2 , pp. 863-877 . https://doi.org/10.1121/1.4996000 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1121/1.4996000 |
container_title |
The Journal of the Acoustical Society of America |
container_volume |
142 |
container_issue |
2 |
container_start_page |
863 |
op_container_end_page |
877 |
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1766061437105471488 |