Half a century of high-latitude fisheries oceanography research on the "recruitment problem" in Northeast Arctic cod (Gadus morhua)
Predicting recruitment in a reliable fashion is a great challenge within operational fisheries advice. Here, we consulted the unique but undercommunicated IMR Cod Larva Project (1975–1990), its spin-offs, placed in an international era of advancements over the last 50 years to glance into the future...
Published in: | ICES Journal of Marine Science |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2023
|
Subjects: | |
Online Access: | https://hdl.handle.net/11250/3104370 https://doi.org/10.1093/icesjms/fsad073 |
id |
ftimr:oai:imr.brage.unit.no:11250/3104370 |
---|---|
record_format |
openpolar |
spelling |
ftimr:oai:imr.brage.unit.no:11250/3104370 2023-12-24T10:12:39+01:00 Half a century of high-latitude fisheries oceanography research on the "recruitment problem" in Northeast Arctic cod (Gadus morhua) Kjesbu, Olav Sigurd Tiedemann, Maik Alix, Maud Thorsen, Anders Sundby, Svein 2023 application/pdf https://hdl.handle.net/11250/3104370 https://doi.org/10.1093/icesjms/fsad073 eng eng Havforskningsinstituttet: 15205 ICES Journal of Marine Science. 2023, 80 (5), 1179-1201. urn:issn:1054-3139 https://hdl.handle.net/11250/3104370 https://doi.org/10.1093/icesjms/fsad073 cristin:2172927 1179-1201 80 ICES Journal of Marine Science 5 Peer reviewed Journal article 2023 ftimr https://doi.org/10.1093/icesjms/fsad073 2023-11-29T23:47:44Z Predicting recruitment in a reliable fashion is a great challenge within operational fisheries advice. Here, we consulted the unique but undercommunicated IMR Cod Larva Project (1975–1990), its spin-offs, placed in an international era of advancements over the last 50 years to glance into the future. Few initiatives of this kind have applied such extensive research approaches, spanning from laboratory, mesocosm, tank, and field studies to process modelling. The “critical period” concept appeared misleading, covering months rather than days of the early life history stages (ELHS) of Northeast Arctic cod. Larval feeding success was strongly modified by improved encounter rates from wind-induced turbulence. In addition, the following maternal effect studies evidenced that the dynamics of stock demography prior to spawning should be upheld to promote recruitment success. Although we now have lower-trophic level models as well as ELHS individual-based models, such models are still insufficiently reflecting the needed spatiotemporal resolution. The same problem applies to climate/circulation models. Nevertheless, this long-lasting research has significantly improved the mechanistic understanding of ELHS dynamics but also of the more predictable adult reproductive parameters. Based on a “to-list list,” we suggest research avenues that should be pursued to further improve our ability predicting recruitment strength in marine fish stocks. publishedVersion Article in Journal/Newspaper Arctic cod Arctic Gadus morhua Northeast Arctic cod Institute for Marine Research: Brage IMR Arctic ICES Journal of Marine Science 80 5 1179 1201 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
Predicting recruitment in a reliable fashion is a great challenge within operational fisheries advice. Here, we consulted the unique but undercommunicated IMR Cod Larva Project (1975–1990), its spin-offs, placed in an international era of advancements over the last 50 years to glance into the future. Few initiatives of this kind have applied such extensive research approaches, spanning from laboratory, mesocosm, tank, and field studies to process modelling. The “critical period” concept appeared misleading, covering months rather than days of the early life history stages (ELHS) of Northeast Arctic cod. Larval feeding success was strongly modified by improved encounter rates from wind-induced turbulence. In addition, the following maternal effect studies evidenced that the dynamics of stock demography prior to spawning should be upheld to promote recruitment success. Although we now have lower-trophic level models as well as ELHS individual-based models, such models are still insufficiently reflecting the needed spatiotemporal resolution. The same problem applies to climate/circulation models. Nevertheless, this long-lasting research has significantly improved the mechanistic understanding of ELHS dynamics but also of the more predictable adult reproductive parameters. Based on a “to-list list,” we suggest research avenues that should be pursued to further improve our ability predicting recruitment strength in marine fish stocks. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Kjesbu, Olav Sigurd Tiedemann, Maik Alix, Maud Thorsen, Anders Sundby, Svein |
spellingShingle |
Kjesbu, Olav Sigurd Tiedemann, Maik Alix, Maud Thorsen, Anders Sundby, Svein Half a century of high-latitude fisheries oceanography research on the "recruitment problem" in Northeast Arctic cod (Gadus morhua) |
author_facet |
Kjesbu, Olav Sigurd Tiedemann, Maik Alix, Maud Thorsen, Anders Sundby, Svein |
author_sort |
Kjesbu, Olav Sigurd |
title |
Half a century of high-latitude fisheries oceanography research on the "recruitment problem" in Northeast Arctic cod (Gadus morhua) |
title_short |
Half a century of high-latitude fisheries oceanography research on the "recruitment problem" in Northeast Arctic cod (Gadus morhua) |
title_full |
Half a century of high-latitude fisheries oceanography research on the "recruitment problem" in Northeast Arctic cod (Gadus morhua) |
title_fullStr |
Half a century of high-latitude fisheries oceanography research on the "recruitment problem" in Northeast Arctic cod (Gadus morhua) |
title_full_unstemmed |
Half a century of high-latitude fisheries oceanography research on the "recruitment problem" in Northeast Arctic cod (Gadus morhua) |
title_sort |
half a century of high-latitude fisheries oceanography research on the "recruitment problem" in northeast arctic cod (gadus morhua) |
publishDate |
2023 |
url |
https://hdl.handle.net/11250/3104370 https://doi.org/10.1093/icesjms/fsad073 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic cod Arctic Gadus morhua Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Gadus morhua Northeast Arctic cod |
op_source |
1179-1201 80 ICES Journal of Marine Science 5 |
op_relation |
Havforskningsinstituttet: 15205 ICES Journal of Marine Science. 2023, 80 (5), 1179-1201. urn:issn:1054-3139 https://hdl.handle.net/11250/3104370 https://doi.org/10.1093/icesjms/fsad073 cristin:2172927 |
op_doi |
https://doi.org/10.1093/icesjms/fsad073 |
container_title |
ICES Journal of Marine Science |
container_volume |
80 |
container_issue |
5 |
container_start_page |
1179 |
op_container_end_page |
1201 |
_version_ |
1786175701569765376 |