Multispecies acoustic dead-zone correction and bias ratio estimates between acoustic and bottom-trawl data
Abstract In this study, we extended the original work of Kotwicki et al. (2013. Combining bottom trawl and acoustic data to model acoustic dead zone correction and bottom trawl efficiency parameters for semipelagic species. Canadian Journal of Fisheries and Aquatic Sciences 70: 208–219) to jointly e...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsx115 http://academic.oup.com/icesjms/article-pdf/75/1/361/31237024/fsx115.pdf |
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croxfordunivpr:10.1093/icesjms/fsx115 2023-05-15T15:39:08+02:00 Multispecies acoustic dead-zone correction and bias ratio estimates between acoustic and bottom-trawl data Ono, Kotaro Kotwicki, Stan Dingsør, Gjert E Johnsen, Espen Anderson, Emory Joint Institute for the Study of the Atmosphere and Ocean JISAO Research Council of Norway 2017 http://dx.doi.org/10.1093/icesjms/fsx115 http://academic.oup.com/icesjms/article-pdf/75/1/361/31237024/fsx115.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model ICES Journal of Marine Science volume 75, issue 1, page 361-373 ISSN 1054-3139 1095-9289 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2017 croxfordunivpr https://doi.org/10.1093/icesjms/fsx115 2022-04-15T06:15:28Z Abstract In this study, we extended the original work of Kotwicki et al. (2013. Combining bottom trawl and acoustic data to model acoustic dead zone correction and bottom trawl efficiency parameters for semipelagic species. Canadian Journal of Fisheries and Aquatic Sciences 70: 208–219) to jointly estimate the acoustic dead-zone correction, the bias ratio, and the gear efficiency for multiple species by using simultaneously collected acoustic and bottom-trawl data. The model was applied to cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) in the Barents Sea and demonstrated a better or similar performance compared with a single species approach. The vertical distribution of cod and haddock was highly variable and was influenced by light level, water temperature, salinity, and depth. Temperature and sunlight were the most influential factors in this study. Increase in temperature resulted in decreasing catch and fish density in the acoustic dead zone (ADZ), while increasing sun altitude (surrogate for light level) increased the catch and fish density in the ADZ. The catch and density of haddock in the ADZ also increased at the lowest sun altitude level (shortly after midnight). Generally, the density of cod and haddock changed more rapidly in the ADZ than in the catch (from bottom to the effective fishing height) indicating the importance of modelling fish density in the ADZ. Finally, the uncorrelated variability in the annual residual variance of cod and haddock further strengthen the conclusion that species vertical distribution changes frequently and that there are probably many other unobserved environmental variables that affect them independently. Article in Journal/Newspaper Barents Sea Gadus morhua Oxford University Press (via Crossref) Barents Sea ICES Journal of Marine Science 75 1 361 373 |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Ono, Kotaro Kotwicki, Stan Dingsør, Gjert E Johnsen, Espen Multispecies acoustic dead-zone correction and bias ratio estimates between acoustic and bottom-trawl data |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract In this study, we extended the original work of Kotwicki et al. (2013. Combining bottom trawl and acoustic data to model acoustic dead zone correction and bottom trawl efficiency parameters for semipelagic species. Canadian Journal of Fisheries and Aquatic Sciences 70: 208–219) to jointly estimate the acoustic dead-zone correction, the bias ratio, and the gear efficiency for multiple species by using simultaneously collected acoustic and bottom-trawl data. The model was applied to cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) in the Barents Sea and demonstrated a better or similar performance compared with a single species approach. The vertical distribution of cod and haddock was highly variable and was influenced by light level, water temperature, salinity, and depth. Temperature and sunlight were the most influential factors in this study. Increase in temperature resulted in decreasing catch and fish density in the acoustic dead zone (ADZ), while increasing sun altitude (surrogate for light level) increased the catch and fish density in the ADZ. The catch and density of haddock in the ADZ also increased at the lowest sun altitude level (shortly after midnight). Generally, the density of cod and haddock changed more rapidly in the ADZ than in the catch (from bottom to the effective fishing height) indicating the importance of modelling fish density in the ADZ. Finally, the uncorrelated variability in the annual residual variance of cod and haddock further strengthen the conclusion that species vertical distribution changes frequently and that there are probably many other unobserved environmental variables that affect them independently. |
author2 |
Anderson, Emory Joint Institute for the Study of the Atmosphere and Ocean JISAO Research Council of Norway |
format |
Article in Journal/Newspaper |
author |
Ono, Kotaro Kotwicki, Stan Dingsør, Gjert E Johnsen, Espen |
author_facet |
Ono, Kotaro Kotwicki, Stan Dingsør, Gjert E Johnsen, Espen |
author_sort |
Ono, Kotaro |
title |
Multispecies acoustic dead-zone correction and bias ratio estimates between acoustic and bottom-trawl data |
title_short |
Multispecies acoustic dead-zone correction and bias ratio estimates between acoustic and bottom-trawl data |
title_full |
Multispecies acoustic dead-zone correction and bias ratio estimates between acoustic and bottom-trawl data |
title_fullStr |
Multispecies acoustic dead-zone correction and bias ratio estimates between acoustic and bottom-trawl data |
title_full_unstemmed |
Multispecies acoustic dead-zone correction and bias ratio estimates between acoustic and bottom-trawl data |
title_sort |
multispecies acoustic dead-zone correction and bias ratio estimates between acoustic and bottom-trawl data |
publisher |
Oxford University Press (OUP) |
publishDate |
2017 |
url |
http://dx.doi.org/10.1093/icesjms/fsx115 http://academic.oup.com/icesjms/article-pdf/75/1/361/31237024/fsx115.pdf |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Gadus morhua |
genre_facet |
Barents Sea Gadus morhua |
op_source |
ICES Journal of Marine Science volume 75, issue 1, page 361-373 ISSN 1054-3139 1095-9289 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/icesjms/fsx115 |
container_title |
ICES Journal of Marine Science |
container_volume |
75 |
container_issue |
1 |
container_start_page |
361 |
op_container_end_page |
373 |
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1766370585569394688 |