Effects of duty cycles on passive acoustic monitoring of southern resident killer whale ( Orcinus orca ) occurrence and behavior
Long-term passive acoustic monitoring of cetaceans is frequently limited by the data storage capacity and battery life of the recording system. Duty cycles are a mechanism for subsampling during the recording process that facilitates long-term passive acoustic studies. While duty cycles are often us...
Published in: | The Journal of the Acoustical Society of America |
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/effects-of-duty-cycles-on-passive-acoustic-monitoring-of-southern-resident-killer-whale-orcinus-orca-occurrence-and-behavior(43a42985-ddfc-49be-abe6-229f2d777a85).html https://doi.org/10.1121/10.0009752 https://research-repository.st-andrews.ac.uk/bitstream/10023/25991/1/Rand_2022_JASA_Duty_cycles_passive_acoustic_monitoring_VoR.pdf |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/43a42985-ddfc-49be-abe6-229f2d777a85 2023-05-15T17:03:37+02:00 Effects of duty cycles on passive acoustic monitoring of southern resident killer whale ( Orcinus orca ) occurrence and behavior Rand, Zoe R. Wood, Jason D. Oswald, Julie N. 2022-03-31 application/pdf https://risweb.st-andrews.ac.uk/portal/en/researchoutput/effects-of-duty-cycles-on-passive-acoustic-monitoring-of-southern-resident-killer-whale-orcinus-orca-occurrence-and-behavior(43a42985-ddfc-49be-abe6-229f2d777a85).html https://doi.org/10.1121/10.0009752 https://research-repository.st-andrews.ac.uk/bitstream/10023/25991/1/Rand_2022_JASA_Duty_cycles_passive_acoustic_monitoring_VoR.pdf eng eng info:eu-repo/semantics/openAccess Rand , Z R , Wood , J D & Oswald , J N 2022 , ' Effects of duty cycles on passive acoustic monitoring of southern resident killer whale ( Orcinus orca ) occurrence and behavior ' , Journal of the Acoustical Society of America , vol. 151 , no. 3 , pp. 1651-1660 . https://doi.org/10.1121/10.0009752 article 2022 ftunstandrewcris https://doi.org/10.1121/10.0009752 2022-10-13T15:27:04Z Long-term passive acoustic monitoring of cetaceans is frequently limited by the data storage capacity and battery life of the recording system. Duty cycles are a mechanism for subsampling during the recording process that facilitates long-term passive acoustic studies. While duty cycles are often used, there has been little investigation on the impact that this approach has on the ability to answer questions about a species' behavior and occurrence. In this study, the effects of duty cycling on the acoustic detection of southern resident killer whales (SRKW) ( Orcinus orca ) were investigated. Continuous acoustic data were subsampled to create 288 subsampled datasets with cycle lengths from 5 to 180 min and listening proportions from 1% to 67%. Duty cycles had little effect on the detection of the daily presence of SRKW, especially when using cycle lengths of less than an hour. However, cycle lengths of 15–30 min and listening proportions of at least 33% were required to accurately calculate durations of acoustic bouts and identify those bouts to ecotype. These results show that the optimal duty cycle depends on the scale of the research question and provide a framework for quantitative analysis of duty cycles for other marine species. Article in Journal/Newspaper Killer Whale Orca Orcinus orca Killer whale University of St Andrews: Research Portal The Journal of the Acoustical Society of America 151 3 1651 1660 |
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University of St Andrews: Research Portal |
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ftunstandrewcris |
language |
English |
description |
Long-term passive acoustic monitoring of cetaceans is frequently limited by the data storage capacity and battery life of the recording system. Duty cycles are a mechanism for subsampling during the recording process that facilitates long-term passive acoustic studies. While duty cycles are often used, there has been little investigation on the impact that this approach has on the ability to answer questions about a species' behavior and occurrence. In this study, the effects of duty cycling on the acoustic detection of southern resident killer whales (SRKW) ( Orcinus orca ) were investigated. Continuous acoustic data were subsampled to create 288 subsampled datasets with cycle lengths from 5 to 180 min and listening proportions from 1% to 67%. Duty cycles had little effect on the detection of the daily presence of SRKW, especially when using cycle lengths of less than an hour. However, cycle lengths of 15–30 min and listening proportions of at least 33% were required to accurately calculate durations of acoustic bouts and identify those bouts to ecotype. These results show that the optimal duty cycle depends on the scale of the research question and provide a framework for quantitative analysis of duty cycles for other marine species. |
format |
Article in Journal/Newspaper |
author |
Rand, Zoe R. Wood, Jason D. Oswald, Julie N. |
spellingShingle |
Rand, Zoe R. Wood, Jason D. Oswald, Julie N. Effects of duty cycles on passive acoustic monitoring of southern resident killer whale ( Orcinus orca ) occurrence and behavior |
author_facet |
Rand, Zoe R. Wood, Jason D. Oswald, Julie N. |
author_sort |
Rand, Zoe R. |
title |
Effects of duty cycles on passive acoustic monitoring of southern resident killer whale ( Orcinus orca ) occurrence and behavior |
title_short |
Effects of duty cycles on passive acoustic monitoring of southern resident killer whale ( Orcinus orca ) occurrence and behavior |
title_full |
Effects of duty cycles on passive acoustic monitoring of southern resident killer whale ( Orcinus orca ) occurrence and behavior |
title_fullStr |
Effects of duty cycles on passive acoustic monitoring of southern resident killer whale ( Orcinus orca ) occurrence and behavior |
title_full_unstemmed |
Effects of duty cycles on passive acoustic monitoring of southern resident killer whale ( Orcinus orca ) occurrence and behavior |
title_sort |
effects of duty cycles on passive acoustic monitoring of southern resident killer whale ( orcinus orca ) occurrence and behavior |
publishDate |
2022 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/effects-of-duty-cycles-on-passive-acoustic-monitoring-of-southern-resident-killer-whale-orcinus-orca-occurrence-and-behavior(43a42985-ddfc-49be-abe6-229f2d777a85).html https://doi.org/10.1121/10.0009752 https://research-repository.st-andrews.ac.uk/bitstream/10023/25991/1/Rand_2022_JASA_Duty_cycles_passive_acoustic_monitoring_VoR.pdf |
genre |
Killer Whale Orca Orcinus orca Killer whale |
genre_facet |
Killer Whale Orca Orcinus orca Killer whale |
op_source |
Rand , Z R , Wood , J D & Oswald , J N 2022 , ' Effects of duty cycles on passive acoustic monitoring of southern resident killer whale ( Orcinus orca ) occurrence and behavior ' , Journal of the Acoustical Society of America , vol. 151 , no. 3 , pp. 1651-1660 . https://doi.org/10.1121/10.0009752 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1121/10.0009752 |
container_title |
The Journal of the Acoustical Society of America |
container_volume |
151 |
container_issue |
3 |
container_start_page |
1651 |
op_container_end_page |
1660 |
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