Climate and juvenile recruitment as drivers of Arctic cod ( Boreogadus saida) dynamics in two Canadian Arctic seas
Arctic cod (Boreogadus saida) is the most abundant forage fish species in Arctic seas and plays a pivotal role in the transfer of energy between zooplankton and top predators. The dominance of Arctic cod and the Arctic’s relatively low biodiversity interact such that changing population dynamics of...
Published in: | Elem Sci Anth |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
University of California Press
2023
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1525/elementa.2023.00033 https://online.ucpress.edu/elementa/article-pdf/doi/10.1525/elementa.2023.00033/791131/elementa.2023.00033.pdf |
id |
crunicaliforniap:10.1525/elementa.2023.00033 |
---|---|
record_format |
openpolar |
spelling |
crunicaliforniap:10.1525/elementa.2023.00033 2024-09-30T14:28:27+00:00 Climate and juvenile recruitment as drivers of Arctic cod ( Boreogadus saida) dynamics in two Canadian Arctic seas Herbig, Jennifer Fisher, Jonathan Bouchard, Caroline Niemi, Andrea LeBlanc, Mathieu Majewski, Andrew Gauthier, Stéphane Geoffroy, Maxime 2023 http://dx.doi.org/10.1525/elementa.2023.00033 https://online.ucpress.edu/elementa/article-pdf/doi/10.1525/elementa.2023.00033/791131/elementa.2023.00033.pdf en eng University of California Press http://creativecommons.org/licenses/by/4.0/ Elem Sci Anth volume 11, issue 1 ISSN 2325-1026 journal-article 2023 crunicaliforniap https://doi.org/10.1525/elementa.2023.00033 2024-09-05T05:01:57Z Arctic cod (Boreogadus saida) is the most abundant forage fish species in Arctic seas and plays a pivotal role in the transfer of energy between zooplankton and top predators. The dominance of Arctic cod and the Arctic’s relatively low biodiversity interact such that changing population dynamics of Arctic cod have cascading effects on whole Arctic marine ecosystems. Over the last decades, warming in the Arctic has led to a decline in Arctic cod populations in the Barents Sea, but in the Canadian Arctic these conditions have been correlated with up to a 10-fold higher biomass of age-0 Arctic cod at the end of summer. However, whether this enhanced larval survival with warmer waters endures through age-1+ populations is unknown. A better understanding of spatial variation in the response of Arctic cod populations to environmental conditions is critical to forecast future changes in Arctic ecosystems. Here, we rely on a 17-year time series of acoustic-trawl surveys (2003–2019) to test whether ice-breakup date, sea surface temperature, zooplankton density, and Arctic climate indices during early life stages affect the subsequent recruitment of age-1+ Arctic cod in the Beaufort Sea and Baffin Bay. In the Beaufort Sea, the biomass of age-1+ Arctic cod correlated with both Arctic Oscillation indices and age-0 biomass of the previous year. In Baffin Bay, the biomass of age-1+ Arctic cod correlated with previous-year North Atlantic Oscillation indices and the timing of ice breakup. This study demonstrates that climate and environmental conditions experienced during the early life stages drive the recruitment of the age-1+ Arctic cod population and helps to quantify spatial variation in the main environmental drivers. Article in Journal/Newspaper Arctic cod Arctic Baffin Bay Baffin Bay Baffin Barents Sea Beaufort Sea Boreogadus saida North Atlantic North Atlantic oscillation Zooplankton University of California Press Arctic Barents Sea Baffin Bay Elem Sci Anth 11 1 |
institution |
Open Polar |
collection |
University of California Press |
op_collection_id |
crunicaliforniap |
language |
English |
description |
Arctic cod (Boreogadus saida) is the most abundant forage fish species in Arctic seas and plays a pivotal role in the transfer of energy between zooplankton and top predators. The dominance of Arctic cod and the Arctic’s relatively low biodiversity interact such that changing population dynamics of Arctic cod have cascading effects on whole Arctic marine ecosystems. Over the last decades, warming in the Arctic has led to a decline in Arctic cod populations in the Barents Sea, but in the Canadian Arctic these conditions have been correlated with up to a 10-fold higher biomass of age-0 Arctic cod at the end of summer. However, whether this enhanced larval survival with warmer waters endures through age-1+ populations is unknown. A better understanding of spatial variation in the response of Arctic cod populations to environmental conditions is critical to forecast future changes in Arctic ecosystems. Here, we rely on a 17-year time series of acoustic-trawl surveys (2003–2019) to test whether ice-breakup date, sea surface temperature, zooplankton density, and Arctic climate indices during early life stages affect the subsequent recruitment of age-1+ Arctic cod in the Beaufort Sea and Baffin Bay. In the Beaufort Sea, the biomass of age-1+ Arctic cod correlated with both Arctic Oscillation indices and age-0 biomass of the previous year. In Baffin Bay, the biomass of age-1+ Arctic cod correlated with previous-year North Atlantic Oscillation indices and the timing of ice breakup. This study demonstrates that climate and environmental conditions experienced during the early life stages drive the recruitment of the age-1+ Arctic cod population and helps to quantify spatial variation in the main environmental drivers. |
format |
Article in Journal/Newspaper |
author |
Herbig, Jennifer Fisher, Jonathan Bouchard, Caroline Niemi, Andrea LeBlanc, Mathieu Majewski, Andrew Gauthier, Stéphane Geoffroy, Maxime |
spellingShingle |
Herbig, Jennifer Fisher, Jonathan Bouchard, Caroline Niemi, Andrea LeBlanc, Mathieu Majewski, Andrew Gauthier, Stéphane Geoffroy, Maxime Climate and juvenile recruitment as drivers of Arctic cod ( Boreogadus saida) dynamics in two Canadian Arctic seas |
author_facet |
Herbig, Jennifer Fisher, Jonathan Bouchard, Caroline Niemi, Andrea LeBlanc, Mathieu Majewski, Andrew Gauthier, Stéphane Geoffroy, Maxime |
author_sort |
Herbig, Jennifer |
title |
Climate and juvenile recruitment as drivers of Arctic cod ( Boreogadus saida) dynamics in two Canadian Arctic seas |
title_short |
Climate and juvenile recruitment as drivers of Arctic cod ( Boreogadus saida) dynamics in two Canadian Arctic seas |
title_full |
Climate and juvenile recruitment as drivers of Arctic cod ( Boreogadus saida) dynamics in two Canadian Arctic seas |
title_fullStr |
Climate and juvenile recruitment as drivers of Arctic cod ( Boreogadus saida) dynamics in two Canadian Arctic seas |
title_full_unstemmed |
Climate and juvenile recruitment as drivers of Arctic cod ( Boreogadus saida) dynamics in two Canadian Arctic seas |
title_sort |
climate and juvenile recruitment as drivers of arctic cod ( boreogadus saida) dynamics in two canadian arctic seas |
publisher |
University of California Press |
publishDate |
2023 |
url |
http://dx.doi.org/10.1525/elementa.2023.00033 https://online.ucpress.edu/elementa/article-pdf/doi/10.1525/elementa.2023.00033/791131/elementa.2023.00033.pdf |
geographic |
Arctic Barents Sea Baffin Bay |
geographic_facet |
Arctic Barents Sea Baffin Bay |
genre |
Arctic cod Arctic Baffin Bay Baffin Bay Baffin Barents Sea Beaufort Sea Boreogadus saida North Atlantic North Atlantic oscillation Zooplankton |
genre_facet |
Arctic cod Arctic Baffin Bay Baffin Bay Baffin Barents Sea Beaufort Sea Boreogadus saida North Atlantic North Atlantic oscillation Zooplankton |
op_source |
Elem Sci Anth volume 11, issue 1 ISSN 2325-1026 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1525/elementa.2023.00033 |
container_title |
Elem Sci Anth |
container_volume |
11 |
container_issue |
1 |
_version_ |
1811634124398526464 |