Empirical evidence of non-linearity in bottom-up effect in a marine predator-prey system
Strength of species interaction may have profound effects on population dynamics. Empirical estimates of interaction strength is often based on the assumption that the interaction strengths are constant. Barents Sea cod and capelin are two fish populations for which such interaction has been acknowl...
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Online Access: | http://hdl.handle.net/10852/97503 https://doi.org/10.1098/rsbl.2022.0309 |
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ftoslouniv:oai:www.duo.uio.no:10852/97503 2023-05-15T15:38:40+02:00 Empirical evidence of non-linearity in bottom-up effect in a marine predator-prey system ENEngelskEnglishEmpirical evidence of non-linearity in bottom-up effect in a marine predator-prey system Durant, Joël Ono, Kotaro Langangen, Øystein Ole Gahr 2022-11-03T11:48:41Z http://hdl.handle.net/10852/97503 https://doi.org/10.1098/rsbl.2022.0309 EN eng NFR/276730 NFR/280467 Durant, Joël Ono, Kotaro Langangen, Øystein Ole Gahr . Empirical evidence of non-linearity in bottom-up effect in a marine predator-prey system. Biology Letters. 2022, 18(11) http://hdl.handle.net/10852/97503 2068553 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Biology Letters&rft.volume=18&rft.spage=&rft.date=2022 Biology Letters 18 11 https://doi.org/10.1098/rsbl.2022.0309 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 1744-9561 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2022 ftoslouniv https://doi.org/10.1098/rsbl.2022.0309 2023-01-11T23:36:25Z Strength of species interaction may have profound effects on population dynamics. Empirical estimates of interaction strength is often based on the assumption that the interaction strengths are constant. Barents Sea cod and capelin are two fish populations for which such interaction has been acknowledged and used, under the assumption of constant interaction strength, when studying their population dynamics. However, species interaction can often be non-linear in marine ecosystems and might profoundly change our understanding of food chains. Analysing 37 years long survey time series in the Arcto-Boreal Barents Sea with a state-space modelling framework, we demonstrate that the effect of capelin on cod is not linear but shifts depending on capelin abundance: while capelin is beneficial for cod population at high abundance, below the threshold, it becomes less important for cod. Our analysis therefore shows the importance of investigating non-linearity in species interaction and may contribute to an improved understanding on species assemblages. Empirical evidence of non-linearity in bottom-up effect in a marine predator-prey system Article in Journal/Newspaper Barents Sea Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Barents Sea Biology Letters 18 11 |
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Open Polar |
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Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Strength of species interaction may have profound effects on population dynamics. Empirical estimates of interaction strength is often based on the assumption that the interaction strengths are constant. Barents Sea cod and capelin are two fish populations for which such interaction has been acknowledged and used, under the assumption of constant interaction strength, when studying their population dynamics. However, species interaction can often be non-linear in marine ecosystems and might profoundly change our understanding of food chains. Analysing 37 years long survey time series in the Arcto-Boreal Barents Sea with a state-space modelling framework, we demonstrate that the effect of capelin on cod is not linear but shifts depending on capelin abundance: while capelin is beneficial for cod population at high abundance, below the threshold, it becomes less important for cod. Our analysis therefore shows the importance of investigating non-linearity in species interaction and may contribute to an improved understanding on species assemblages. Empirical evidence of non-linearity in bottom-up effect in a marine predator-prey system |
format |
Article in Journal/Newspaper |
author |
Durant, Joël Ono, Kotaro Langangen, Øystein Ole Gahr |
spellingShingle |
Durant, Joël Ono, Kotaro Langangen, Øystein Ole Gahr Empirical evidence of non-linearity in bottom-up effect in a marine predator-prey system |
author_facet |
Durant, Joël Ono, Kotaro Langangen, Øystein Ole Gahr |
author_sort |
Durant, Joël |
title |
Empirical evidence of non-linearity in bottom-up effect in a marine predator-prey system |
title_short |
Empirical evidence of non-linearity in bottom-up effect in a marine predator-prey system |
title_full |
Empirical evidence of non-linearity in bottom-up effect in a marine predator-prey system |
title_fullStr |
Empirical evidence of non-linearity in bottom-up effect in a marine predator-prey system |
title_full_unstemmed |
Empirical evidence of non-linearity in bottom-up effect in a marine predator-prey system |
title_sort |
empirical evidence of non-linearity in bottom-up effect in a marine predator-prey system |
publishDate |
2022 |
url |
http://hdl.handle.net/10852/97503 https://doi.org/10.1098/rsbl.2022.0309 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_source |
1744-9561 |
op_relation |
NFR/276730 NFR/280467 Durant, Joël Ono, Kotaro Langangen, Øystein Ole Gahr . Empirical evidence of non-linearity in bottom-up effect in a marine predator-prey system. Biology Letters. 2022, 18(11) http://hdl.handle.net/10852/97503 2068553 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Biology Letters&rft.volume=18&rft.spage=&rft.date=2022 Biology Letters 18 11 https://doi.org/10.1098/rsbl.2022.0309 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1098/rsbl.2022.0309 |
container_title |
Biology Letters |
container_volume |
18 |
container_issue |
11 |
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1766369890501918720 |