Objectively assigning species and ages to salmonid length data from dual-frequency indentification sonar
Fishery managers need robust ways of objectively estimating the quantitative composition of fish stocks, by species and age-class, from representative samples of populations. Dual-frequency identification sonar data were used to first visually identify fish to a broad taxon (Salmonidae). Subsequentl...
Published in: | Transactions of the American Fisheries Society |
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Online Access: | https://strathprints.strath.ac.uk/47558/ https://doi.org/10.1080/00028487.2013.862185 |
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ftustrathclyde:oai:strathprints.strath.ac.uk:47558 2024-04-28T08:13:37+00:00 Objectively assigning species and ages to salmonid length data from dual-frequency indentification sonar Gurney, William Brennan, Louise O. Bacon, Philip J. Wheelan, K.F. O'Grady, Martin Dillane, Eileen McGinnity, Phillip 2014-04-09 https://strathprints.strath.ac.uk/47558/ https://doi.org/10.1080/00028487.2013.862185 unknown Gurney, William <https://strathprints.strath.ac.uk/view/author/21342.html> and Brennan, Louise O. and Bacon, Philip J. and Wheelan, K.F. and O'Grady, Martin and Dillane, Eileen and McGinnity, Phillip (2014 <https://strathprints.strath.ac.uk/view/year/2014.html>) Objectively assigning species and ages to salmonid length data from dual-frequency indentification sonar. Transactions of the American Fisheries Society <https://strathprints.strath.ac.uk/view/publications/Transactions_of_the_American_Fisheries_Society.html>, 143 (3). pp. 573-585. ISSN 0002-8487 Mathematics Aquaculture. Fisheries. Angling Article PeerReviewed 2014 ftustrathclyde https://doi.org/10.1080/00028487.2013.862185 2024-04-10T00:59:49Z Fishery managers need robust ways of objectively estimating the quantitative composition of fish stocks, by species and age-class, from representative samples of populations. Dual-frequency identification sonar data were used to first visually identify fish to a broad taxon (Salmonidae). Subsequently, kernel-density estimations, based on calibrated size-at-age data for the possible component species, were used to assign sonar observations both to species (Atlantic Salmon Salmo salar or Brown Trout Salmo trutta) and age-classes within species. The calculations are illustrated for alternative sets of calibration data. To obtain close and relevant fits, the approach fundamentally relies on having accurate and fully representative subcomponent distributions. Firmer inferences can be made if the component data sets correspond closely to the target information in both time and space. Given carefully chosen suites of component data, robust population composition estimates with narrow confidence intervals were obtained. General principles are stated, which indicate when such methods might work well or poorly. Article in Journal/Newspaper Atlantic salmon Salmo salar University of Strathclyde Glasgow: Strathprints Transactions of the American Fisheries Society 143 3 573 585 |
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University of Strathclyde Glasgow: Strathprints |
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ftustrathclyde |
language |
unknown |
topic |
Mathematics Aquaculture. Fisheries. Angling |
spellingShingle |
Mathematics Aquaculture. Fisheries. Angling Gurney, William Brennan, Louise O. Bacon, Philip J. Wheelan, K.F. O'Grady, Martin Dillane, Eileen McGinnity, Phillip Objectively assigning species and ages to salmonid length data from dual-frequency indentification sonar |
topic_facet |
Mathematics Aquaculture. Fisheries. Angling |
description |
Fishery managers need robust ways of objectively estimating the quantitative composition of fish stocks, by species and age-class, from representative samples of populations. Dual-frequency identification sonar data were used to first visually identify fish to a broad taxon (Salmonidae). Subsequently, kernel-density estimations, based on calibrated size-at-age data for the possible component species, were used to assign sonar observations both to species (Atlantic Salmon Salmo salar or Brown Trout Salmo trutta) and age-classes within species. The calculations are illustrated for alternative sets of calibration data. To obtain close and relevant fits, the approach fundamentally relies on having accurate and fully representative subcomponent distributions. Firmer inferences can be made if the component data sets correspond closely to the target information in both time and space. Given carefully chosen suites of component data, robust population composition estimates with narrow confidence intervals were obtained. General principles are stated, which indicate when such methods might work well or poorly. |
format |
Article in Journal/Newspaper |
author |
Gurney, William Brennan, Louise O. Bacon, Philip J. Wheelan, K.F. O'Grady, Martin Dillane, Eileen McGinnity, Phillip |
author_facet |
Gurney, William Brennan, Louise O. Bacon, Philip J. Wheelan, K.F. O'Grady, Martin Dillane, Eileen McGinnity, Phillip |
author_sort |
Gurney, William |
title |
Objectively assigning species and ages to salmonid length data from dual-frequency indentification sonar |
title_short |
Objectively assigning species and ages to salmonid length data from dual-frequency indentification sonar |
title_full |
Objectively assigning species and ages to salmonid length data from dual-frequency indentification sonar |
title_fullStr |
Objectively assigning species and ages to salmonid length data from dual-frequency indentification sonar |
title_full_unstemmed |
Objectively assigning species and ages to salmonid length data from dual-frequency indentification sonar |
title_sort |
objectively assigning species and ages to salmonid length data from dual-frequency indentification sonar |
publishDate |
2014 |
url |
https://strathprints.strath.ac.uk/47558/ https://doi.org/10.1080/00028487.2013.862185 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
Gurney, William <https://strathprints.strath.ac.uk/view/author/21342.html> and Brennan, Louise O. and Bacon, Philip J. and Wheelan, K.F. and O'Grady, Martin and Dillane, Eileen and McGinnity, Phillip (2014 <https://strathprints.strath.ac.uk/view/year/2014.html>) Objectively assigning species and ages to salmonid length data from dual-frequency indentification sonar. Transactions of the American Fisheries Society <https://strathprints.strath.ac.uk/view/publications/Transactions_of_the_American_Fisheries_Society.html>, 143 (3). pp. 573-585. ISSN 0002-8487 |
op_doi |
https://doi.org/10.1080/00028487.2013.862185 |
container_title |
Transactions of the American Fisheries Society |
container_volume |
143 |
container_issue |
3 |
container_start_page |
573 |
op_container_end_page |
585 |
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1797580060969926656 |