Influence of larval transport and temperature on recruitment dynamics of North Sea cod (Gadus morhua) across spatial scales of observation
The survival of fish eggs and larvae, and therefore recruitment success, can be critically affected by transport in ocean currents. Combining a model of early‐life stage dispersal with statistical stock–recruitment models, we investigated the role of larval transport for recruitment variability acro...
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ftnorskinstvf:oai:niva.brage.unit.no:11250/2672628 2023-05-15T16:19:03+02:00 Influence of larval transport and temperature on recruitment dynamics of North Sea cod (Gadus morhua) across spatial scales of observation Romagnoni, Giovanni Kvile, Kristina Øie Dagestad, Knut Frode Eikeset, Anne Maria Kristiansen, Trond Stenseth, Nils Christian Langangen, Øystein 2020 application/pdf https://hdl.handle.net/11250/2672628 https://doi.org/10.1111/fog.12474 eng eng Wiley Notur/NorStore: NN9297K Fisheries Oceanography. 2020, 29 (4), 324-339. urn:issn:1054-6006 https://hdl.handle.net/11250/2672628 https://doi.org/10.1111/fog.12474 cristin:1819870 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2020 The Authors CC-BY 324-339 29 Fisheries Oceanography 4 Peer reviewed Journal article 2020 ftnorskinstvf https://doi.org/10.1111/fog.12474 2023-02-21T08:46:20Z The survival of fish eggs and larvae, and therefore recruitment success, can be critically affected by transport in ocean currents. Combining a model of early‐life stage dispersal with statistical stock–recruitment models, we investigated the role of larval transport for recruitment variability across spatial scales for the population complex of North Sea cod (Gadus morhua). By using a coupled physical–biological model, we estimated the egg and larval transport over a 44‐year period. The oceanographic component of the model, capable of capturing the interannual variability of temperature and ocean current patterns, was coupled to the biological component, an individual‐based model (IBM) that simulated the cod eggs and larvae development and mortality. This study proposes a novel method to account for larval transport and success in stock–recruitment models: weighting the spawning stock biomass by retention rate and, in the case of multiple populations, their connectivity. Our method provides an estimate of the stock biomass contributing to recruitment and the effect of larval transport on recruitment variability. Our results indicate an effect, albeit small, in some populations at the local level. Including transport anomaly as an environmental covariate in traditional stock–recruitment models in turn captures recruitment variability at larger scales. Our study aims to quantify the role of larval transport for recruitment across spatial scales, and disentangle the roles of temperature and larval transport on effective connectivity between populations, thus informing about the potential impacts of climate change on the cod population structure in the North Sea. publishedVersion Article in Journal/Newspaper Gadus morhua Norwegian Institute for Water research: NIVA Open Access Archive (Brage) Fisheries Oceanography 29 4 324 339 |
institution |
Open Polar |
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Norwegian Institute for Water research: NIVA Open Access Archive (Brage) |
op_collection_id |
ftnorskinstvf |
language |
English |
description |
The survival of fish eggs and larvae, and therefore recruitment success, can be critically affected by transport in ocean currents. Combining a model of early‐life stage dispersal with statistical stock–recruitment models, we investigated the role of larval transport for recruitment variability across spatial scales for the population complex of North Sea cod (Gadus morhua). By using a coupled physical–biological model, we estimated the egg and larval transport over a 44‐year period. The oceanographic component of the model, capable of capturing the interannual variability of temperature and ocean current patterns, was coupled to the biological component, an individual‐based model (IBM) that simulated the cod eggs and larvae development and mortality. This study proposes a novel method to account for larval transport and success in stock–recruitment models: weighting the spawning stock biomass by retention rate and, in the case of multiple populations, their connectivity. Our method provides an estimate of the stock biomass contributing to recruitment and the effect of larval transport on recruitment variability. Our results indicate an effect, albeit small, in some populations at the local level. Including transport anomaly as an environmental covariate in traditional stock–recruitment models in turn captures recruitment variability at larger scales. Our study aims to quantify the role of larval transport for recruitment across spatial scales, and disentangle the roles of temperature and larval transport on effective connectivity between populations, thus informing about the potential impacts of climate change on the cod population structure in the North Sea. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Romagnoni, Giovanni Kvile, Kristina Øie Dagestad, Knut Frode Eikeset, Anne Maria Kristiansen, Trond Stenseth, Nils Christian Langangen, Øystein |
spellingShingle |
Romagnoni, Giovanni Kvile, Kristina Øie Dagestad, Knut Frode Eikeset, Anne Maria Kristiansen, Trond Stenseth, Nils Christian Langangen, Øystein Influence of larval transport and temperature on recruitment dynamics of North Sea cod (Gadus morhua) across spatial scales of observation |
author_facet |
Romagnoni, Giovanni Kvile, Kristina Øie Dagestad, Knut Frode Eikeset, Anne Maria Kristiansen, Trond Stenseth, Nils Christian Langangen, Øystein |
author_sort |
Romagnoni, Giovanni |
title |
Influence of larval transport and temperature on recruitment dynamics of North Sea cod (Gadus morhua) across spatial scales of observation |
title_short |
Influence of larval transport and temperature on recruitment dynamics of North Sea cod (Gadus morhua) across spatial scales of observation |
title_full |
Influence of larval transport and temperature on recruitment dynamics of North Sea cod (Gadus morhua) across spatial scales of observation |
title_fullStr |
Influence of larval transport and temperature on recruitment dynamics of North Sea cod (Gadus morhua) across spatial scales of observation |
title_full_unstemmed |
Influence of larval transport and temperature on recruitment dynamics of North Sea cod (Gadus morhua) across spatial scales of observation |
title_sort |
influence of larval transport and temperature on recruitment dynamics of north sea cod (gadus morhua) across spatial scales of observation |
publisher |
Wiley |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2672628 https://doi.org/10.1111/fog.12474 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
324-339 29 Fisheries Oceanography 4 |
op_relation |
Notur/NorStore: NN9297K Fisheries Oceanography. 2020, 29 (4), 324-339. urn:issn:1054-6006 https://hdl.handle.net/11250/2672628 https://doi.org/10.1111/fog.12474 cristin:1819870 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2020 The Authors |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1111/fog.12474 |
container_title |
Fisheries Oceanography |
container_volume |
29 |
container_issue |
4 |
container_start_page |
324 |
op_container_end_page |
339 |
_version_ |
1766005360192126976 |