Altering Vertical Placement of Hydroacoustic Receivers for Improved Efficiency in Coldwater Estuary Zones
Abstract Acoustic telemetry is used to study Atlantic Salmon Salmo salar migration ecology and identify mortality zones within estuary systems. Improved detection efficiency helps reduce the uncertainty associated with survival estimates and improves the accuracy of various migration performance met...
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crwiley:10.1080/02755947.2017.1336133 2024-06-02T08:03:34+00:00 Altering Vertical Placement of Hydroacoustic Receivers for Improved Efficiency in Coldwater Estuary Zones Goulette, Graham S. Hawkes, James P. 2017 http://dx.doi.org/10.1080/02755947.2017.1336133 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/02755947.2017.1336133 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor North American Journal of Fisheries Management volume 37, issue 5, page 981-988 ISSN 0275-5947 1548-8675 journal-article 2017 crwiley https://doi.org/10.1080/02755947.2017.1336133 2024-05-03T11:49:41Z Abstract Acoustic telemetry is used to study Atlantic Salmon Salmo salar migration ecology and identify mortality zones within estuary systems. Improved detection efficiency helps reduce the uncertainty associated with survival estimates and improves the accuracy of various migration performance metrics. While emigrating salmon smolts and postsmolts are largely surface‐oriented, using the top few meters of the water column, literature suggests they may sound to 10 m or deeper, influencing detection probability and therefore survival estimates. We determined the influence of receiver depth on detection efficiency to improve telemetry assessments in our coldwater estuary zones. We found significant differences in total detections with experimental depths. Detection efficiency of transmitters improved as much as 18.3% when receivers were placed on the bottom and by 9.2% when receivers were placed at 20 m versus 10 m depth. In a second portion of our study, we evaluated the influence of depth and several environmental variables on detection efficiency using sentinel transmitters. Receivers placed at 20 m depth had greater detection efficiencies than receivers placed at 10 m depth during increased precipitation and wind speed events and at all tide stages. Our results can be used to improve detection efficiency of tagged, epipelagic Atlantic Salmon smolts in coldwater estuary zones. Received November 14, 2016; accepted May 24, 2017Published online August 9, 2017 Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library North American Journal of Fisheries Management 37 5 981 988 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Acoustic telemetry is used to study Atlantic Salmon Salmo salar migration ecology and identify mortality zones within estuary systems. Improved detection efficiency helps reduce the uncertainty associated with survival estimates and improves the accuracy of various migration performance metrics. While emigrating salmon smolts and postsmolts are largely surface‐oriented, using the top few meters of the water column, literature suggests they may sound to 10 m or deeper, influencing detection probability and therefore survival estimates. We determined the influence of receiver depth on detection efficiency to improve telemetry assessments in our coldwater estuary zones. We found significant differences in total detections with experimental depths. Detection efficiency of transmitters improved as much as 18.3% when receivers were placed on the bottom and by 9.2% when receivers were placed at 20 m versus 10 m depth. In a second portion of our study, we evaluated the influence of depth and several environmental variables on detection efficiency using sentinel transmitters. Receivers placed at 20 m depth had greater detection efficiencies than receivers placed at 10 m depth during increased precipitation and wind speed events and at all tide stages. Our results can be used to improve detection efficiency of tagged, epipelagic Atlantic Salmon smolts in coldwater estuary zones. Received November 14, 2016; accepted May 24, 2017Published online August 9, 2017 |
format |
Article in Journal/Newspaper |
author |
Goulette, Graham S. Hawkes, James P. |
spellingShingle |
Goulette, Graham S. Hawkes, James P. Altering Vertical Placement of Hydroacoustic Receivers for Improved Efficiency in Coldwater Estuary Zones |
author_facet |
Goulette, Graham S. Hawkes, James P. |
author_sort |
Goulette, Graham S. |
title |
Altering Vertical Placement of Hydroacoustic Receivers for Improved Efficiency in Coldwater Estuary Zones |
title_short |
Altering Vertical Placement of Hydroacoustic Receivers for Improved Efficiency in Coldwater Estuary Zones |
title_full |
Altering Vertical Placement of Hydroacoustic Receivers for Improved Efficiency in Coldwater Estuary Zones |
title_fullStr |
Altering Vertical Placement of Hydroacoustic Receivers for Improved Efficiency in Coldwater Estuary Zones |
title_full_unstemmed |
Altering Vertical Placement of Hydroacoustic Receivers for Improved Efficiency in Coldwater Estuary Zones |
title_sort |
altering vertical placement of hydroacoustic receivers for improved efficiency in coldwater estuary zones |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1080/02755947.2017.1336133 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/02755947.2017.1336133 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
North American Journal of Fisheries Management volume 37, issue 5, page 981-988 ISSN 0275-5947 1548-8675 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1080/02755947.2017.1336133 |
container_title |
North American Journal of Fisheries Management |
container_volume |
37 |
container_issue |
5 |
container_start_page |
981 |
op_container_end_page |
988 |
_version_ |
1800748129104953344 |