Testing the bottom-up hypothesis for the decline in size of anchovy and sardine across European waters through a bioenergetic modeling approach
Small pelagic fish have shown a general decrease in size and body condition over the past two decades in several European regional seas. Although the underlying processes are still not well understood, recent studies point to a bottom-up control. In order to better understand how the environment imp...
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Elsevier BV
2023
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Online Access: | https://archimer.ifremer.fr/doc/00812/92434/102391.pdf https://doi.org/10.1016/j.pocean.2022.102943 https://archimer.ifremer.fr/doc/00812/92434/ |
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ftarchimer:oai:archimer.ifremer.fr:92434 2024-01-28T10:08:05+01:00 Testing the bottom-up hypothesis for the decline in size of anchovy and sardine across European waters through a bioenergetic modeling approach Menu, Clara Pecquerie, Laure Bacher, Cedric Doray, Mathieu Hattab, Tarek Van Der Kooij, Jeroen Huret, Martin 2023-01 application/pdf https://archimer.ifremer.fr/doc/00812/92434/102391.pdf https://doi.org/10.1016/j.pocean.2022.102943 https://archimer.ifremer.fr/doc/00812/92434/ eng eng Elsevier BV https://archimer.ifremer.fr/doc/00812/92434/102391.pdf doi:10.1016/j.pocean.2022.102943 https://archimer.ifremer.fr/doc/00812/92434/ info:eu-repo/semantics/openAccess restricted use Progress In Oceanography (0079-6611) (Elsevier BV), 2023-01 , Vol. 210 , P. 102943 (20p.) Pelagic environment Bioenergetics Life history traits Small pelagic fish Zooplankton English Channel Bay of Biscay Gulf of Lion text Article info:eu-repo/semantics/article 2023 ftarchimer https://doi.org/10.1016/j.pocean.2022.102943 2024-01-02T23:51:08Z Small pelagic fish have shown a general decrease in size and body condition over the past two decades in several European regional seas. Although the underlying processes are still not well understood, recent studies point to a bottom-up control. In order to better understand how the environment impacts the main individual life history traits, which themselves control the dynamic of the population, we developed a comparative approach between two species, European anchovy and sardine, and across three regions of the Northeast Atlantic and Mediterranean Sea: the English Channel in the north, to the Bay of Biscay and the Gulf of Lion in the south. We developed a bioenergetic modeling framework based on the Dynamic Energy Budget theory (DEB). Our DEB models were forced using two different representations of the lower trophic levels, POLCOMS-ERSEM and SEAPODYM models. Our models were calibrated for the Bay of Biscay and then projected on to the other regions, over the early 2000s (period with bigger fish) and the early 2010s (period with smaller fish). The environment alone, temperature and zooplankton, explained a significant part of the observed regional differences in growth. However, the temporal trends simulated by the lower trophic levels models, when transcribed through bioenergetics, could not explain the strong decrease in length and weight that occurred in the Bay of Biscay (-30 % in weight for anchovy and −20 % for sardine) and in the Gulf of Lion (-30 % for anchovy and −50 % for sardine). Through a scenario approach, we estimated that a decrease in zooplankton quality could be a significant driver of the observed decrease in size both in the Bay of Biscay and in the Gulf of Lion (decrease in assimilable energy of 4 to 5 % and 15 to 17 % in the Bay of Biscay and the Gulf of Lion, respectively). For such a decrease in size, a zooplankton biomass of the same quality should have been reduced by between 17 and 31 % in the Bay of Biscay over a 10- to 15-year period, while no biologically realistic estimations ... Article in Journal/Newspaper Northeast Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Progress in Oceanography 210 102943 |
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 |
Pelagic environment Bioenergetics Life history traits Small pelagic fish Zooplankton English Channel Bay of Biscay Gulf of Lion |
spellingShingle |
Pelagic environment Bioenergetics Life history traits Small pelagic fish Zooplankton English Channel Bay of Biscay Gulf of Lion Menu, Clara Pecquerie, Laure Bacher, Cedric Doray, Mathieu Hattab, Tarek Van Der Kooij, Jeroen Huret, Martin Testing the bottom-up hypothesis for the decline in size of anchovy and sardine across European waters through a bioenergetic modeling approach |
topic_facet |
Pelagic environment Bioenergetics Life history traits Small pelagic fish Zooplankton English Channel Bay of Biscay Gulf of Lion |
description |
Small pelagic fish have shown a general decrease in size and body condition over the past two decades in several European regional seas. Although the underlying processes are still not well understood, recent studies point to a bottom-up control. In order to better understand how the environment impacts the main individual life history traits, which themselves control the dynamic of the population, we developed a comparative approach between two species, European anchovy and sardine, and across three regions of the Northeast Atlantic and Mediterranean Sea: the English Channel in the north, to the Bay of Biscay and the Gulf of Lion in the south. We developed a bioenergetic modeling framework based on the Dynamic Energy Budget theory (DEB). Our DEB models were forced using two different representations of the lower trophic levels, POLCOMS-ERSEM and SEAPODYM models. Our models were calibrated for the Bay of Biscay and then projected on to the other regions, over the early 2000s (period with bigger fish) and the early 2010s (period with smaller fish). The environment alone, temperature and zooplankton, explained a significant part of the observed regional differences in growth. However, the temporal trends simulated by the lower trophic levels models, when transcribed through bioenergetics, could not explain the strong decrease in length and weight that occurred in the Bay of Biscay (-30 % in weight for anchovy and −20 % for sardine) and in the Gulf of Lion (-30 % for anchovy and −50 % for sardine). Through a scenario approach, we estimated that a decrease in zooplankton quality could be a significant driver of the observed decrease in size both in the Bay of Biscay and in the Gulf of Lion (decrease in assimilable energy of 4 to 5 % and 15 to 17 % in the Bay of Biscay and the Gulf of Lion, respectively). For such a decrease in size, a zooplankton biomass of the same quality should have been reduced by between 17 and 31 % in the Bay of Biscay over a 10- to 15-year period, while no biologically realistic estimations ... |
format |
Article in Journal/Newspaper |
author |
Menu, Clara Pecquerie, Laure Bacher, Cedric Doray, Mathieu Hattab, Tarek Van Der Kooij, Jeroen Huret, Martin |
author_facet |
Menu, Clara Pecquerie, Laure Bacher, Cedric Doray, Mathieu Hattab, Tarek Van Der Kooij, Jeroen Huret, Martin |
author_sort |
Menu, Clara |
title |
Testing the bottom-up hypothesis for the decline in size of anchovy and sardine across European waters through a bioenergetic modeling approach |
title_short |
Testing the bottom-up hypothesis for the decline in size of anchovy and sardine across European waters through a bioenergetic modeling approach |
title_full |
Testing the bottom-up hypothesis for the decline in size of anchovy and sardine across European waters through a bioenergetic modeling approach |
title_fullStr |
Testing the bottom-up hypothesis for the decline in size of anchovy and sardine across European waters through a bioenergetic modeling approach |
title_full_unstemmed |
Testing the bottom-up hypothesis for the decline in size of anchovy and sardine across European waters through a bioenergetic modeling approach |
title_sort |
testing the bottom-up hypothesis for the decline in size of anchovy and sardine across european waters through a bioenergetic modeling approach |
publisher |
Elsevier BV |
publishDate |
2023 |
url |
https://archimer.ifremer.fr/doc/00812/92434/102391.pdf https://doi.org/10.1016/j.pocean.2022.102943 https://archimer.ifremer.fr/doc/00812/92434/ |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Progress In Oceanography (0079-6611) (Elsevier BV), 2023-01 , Vol. 210 , P. 102943 (20p.) |
op_relation |
https://archimer.ifremer.fr/doc/00812/92434/102391.pdf doi:10.1016/j.pocean.2022.102943 https://archimer.ifremer.fr/doc/00812/92434/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.pocean.2022.102943 |
container_title |
Progress in Oceanography |
container_volume |
210 |
container_start_page |
102943 |
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1789336476572450816 |