Modeling the impact of hypoxia on the energy budget of Atlantic cod in two populations of the Gulf of Saint-Lawrence, Canada
Like many marine species around the globe, several stocks of Atlantic cod (Gadus morhua) live in increasingly hypoxic waters. In the Gulf of Saint Lawrence (GSL) in Canada, the deep channels traversing the semi-enclosed sea exhibit year-round hypoxia, identified as one of the limiting factor for the...
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ftarchimer:oai:archimer.ifremer.fr:55966 2023-05-15T15:27:00+02:00 Modeling the impact of hypoxia on the energy budget of Atlantic cod in two populations of the Gulf of Saint-Lawrence, Canada Lavaud, Romain Thomas, Yoann Pecquerie, Laure Benoit, Hugues P. Guyondet, Thomas Flye-sainte-marie, Jonathan Chabot, Denis 2019-01 application/pdf https://archimer.ifremer.fr/doc/00448/55966/57472.pdf https://doi.org/10.1016/j.seares.2018.07.001 https://archimer.ifremer.fr/doc/00448/55966/ eng eng Elsevier Science Bv https://archimer.ifremer.fr/doc/00448/55966/57472.pdf doi:10.1016/j.seares.2018.07.001 https://archimer.ifremer.fr/doc/00448/55966/ 2018 Elsevier B.V. All rights reserved. info:eu-repo/semantics/openAccess restricted use Journal Of Sea Research (1385-1101) (Elsevier Science Bv), 2019-01 , Vol. 143 , P. 243-253 Hypoxia Dynamic energy budget Atlantic cod Growth Temperature Gulf of Saint-Lawrence text Publication info:eu-repo/semantics/article 2019 ftarchimer https://doi.org/10.1016/j.seares.2018.07.001 2021-09-23T20:31:16Z Like many marine species around the globe, several stocks of Atlantic cod (Gadus morhua) live in increasingly hypoxic waters. In the Gulf of Saint Lawrence (GSL) in Canada, the deep channels traversing the semi-enclosed sea exhibit year-round hypoxia, identified as one of the limiting factor for the recovery of GSL cod in its northern part. While many individuals in the northern GSL are known to venture in deeper, warmer, and more hypoxic waters of the Gulf channels, those in the southern GSL live in a shallower, colder, and more oxygenated environment. In this study, we use the modeling framework of the Dynamic Energy Budget (DEB) theory to disentangle the effects of hypoxia, temperature and food on the life-history traits of these two populations of cod in the GSL. Following recent advances by Thomas et al. (submitted, this issue) on the mechanisms for the effects of hypoxia within the context of DEB theory, we implemented a correction of ingestion depending on dissolved oxygen (DO) saturation. We successfully developed and validated a set of parameters for a GSL Atlantic cod DEB model. Using simulations of historical growth trajectories from 1990 until 2004 estimated from data collected through fisheries research surveys, we found that temperature explained about half (48%) of the difference in length and 59% of the difference in mass between the two populations. The remaining proportion was attributed to exposure to hypoxia and food input. We also used our model to explore scenarios of duration, frequency, and intensity of hypoxia on cod's life-history traits, which showed that decreasing DO linearly reduces growth and reproduction while young cod seem to avoid impairing conditions resulting in limiting effects on developmental stages. Article in Journal/Newspaper atlantic cod Gadus morhua Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Canada Journal of Sea Research 143 243 253 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Hypoxia Dynamic energy budget Atlantic cod Growth Temperature Gulf of Saint-Lawrence |
spellingShingle |
Hypoxia Dynamic energy budget Atlantic cod Growth Temperature Gulf of Saint-Lawrence Lavaud, Romain Thomas, Yoann Pecquerie, Laure Benoit, Hugues P. Guyondet, Thomas Flye-sainte-marie, Jonathan Chabot, Denis Modeling the impact of hypoxia on the energy budget of Atlantic cod in two populations of the Gulf of Saint-Lawrence, Canada |
topic_facet |
Hypoxia Dynamic energy budget Atlantic cod Growth Temperature Gulf of Saint-Lawrence |
description |
Like many marine species around the globe, several stocks of Atlantic cod (Gadus morhua) live in increasingly hypoxic waters. In the Gulf of Saint Lawrence (GSL) in Canada, the deep channels traversing the semi-enclosed sea exhibit year-round hypoxia, identified as one of the limiting factor for the recovery of GSL cod in its northern part. While many individuals in the northern GSL are known to venture in deeper, warmer, and more hypoxic waters of the Gulf channels, those in the southern GSL live in a shallower, colder, and more oxygenated environment. In this study, we use the modeling framework of the Dynamic Energy Budget (DEB) theory to disentangle the effects of hypoxia, temperature and food on the life-history traits of these two populations of cod in the GSL. Following recent advances by Thomas et al. (submitted, this issue) on the mechanisms for the effects of hypoxia within the context of DEB theory, we implemented a correction of ingestion depending on dissolved oxygen (DO) saturation. We successfully developed and validated a set of parameters for a GSL Atlantic cod DEB model. Using simulations of historical growth trajectories from 1990 until 2004 estimated from data collected through fisheries research surveys, we found that temperature explained about half (48%) of the difference in length and 59% of the difference in mass between the two populations. The remaining proportion was attributed to exposure to hypoxia and food input. We also used our model to explore scenarios of duration, frequency, and intensity of hypoxia on cod's life-history traits, which showed that decreasing DO linearly reduces growth and reproduction while young cod seem to avoid impairing conditions resulting in limiting effects on developmental stages. |
format |
Article in Journal/Newspaper |
author |
Lavaud, Romain Thomas, Yoann Pecquerie, Laure Benoit, Hugues P. Guyondet, Thomas Flye-sainte-marie, Jonathan Chabot, Denis |
author_facet |
Lavaud, Romain Thomas, Yoann Pecquerie, Laure Benoit, Hugues P. Guyondet, Thomas Flye-sainte-marie, Jonathan Chabot, Denis |
author_sort |
Lavaud, Romain |
title |
Modeling the impact of hypoxia on the energy budget of Atlantic cod in two populations of the Gulf of Saint-Lawrence, Canada |
title_short |
Modeling the impact of hypoxia on the energy budget of Atlantic cod in two populations of the Gulf of Saint-Lawrence, Canada |
title_full |
Modeling the impact of hypoxia on the energy budget of Atlantic cod in two populations of the Gulf of Saint-Lawrence, Canada |
title_fullStr |
Modeling the impact of hypoxia on the energy budget of Atlantic cod in two populations of the Gulf of Saint-Lawrence, Canada |
title_full_unstemmed |
Modeling the impact of hypoxia on the energy budget of Atlantic cod in two populations of the Gulf of Saint-Lawrence, Canada |
title_sort |
modeling the impact of hypoxia on the energy budget of atlantic cod in two populations of the gulf of saint-lawrence, canada |
publisher |
Elsevier Science Bv |
publishDate |
2019 |
url |
https://archimer.ifremer.fr/doc/00448/55966/57472.pdf https://doi.org/10.1016/j.seares.2018.07.001 https://archimer.ifremer.fr/doc/00448/55966/ |
geographic |
Canada |
geographic_facet |
Canada |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Journal Of Sea Research (1385-1101) (Elsevier Science Bv), 2019-01 , Vol. 143 , P. 243-253 |
op_relation |
https://archimer.ifremer.fr/doc/00448/55966/57472.pdf doi:10.1016/j.seares.2018.07.001 https://archimer.ifremer.fr/doc/00448/55966/ |
op_rights |
2018 Elsevier B.V. All rights reserved. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.seares.2018.07.001 |
container_title |
Journal of Sea Research |
container_volume |
143 |
container_start_page |
243 |
op_container_end_page |
253 |
_version_ |
1766357467644559360 |