Multiple configurations and fluctuating trophic control in the Barents Sea food-web
The Barents Sea is a subarctic shelf sea which has experienced major changes during the past decades. From ecological time-series, three different food-web configurations, reflecting successive shifts of dominance of pelagic fish, demersal fish, and zooplankton, as well as varying trophic control ha...
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Online Access: | https://hdl.handle.net/11250/2770050 https://doi.org/10.1371/journal.pone.0254015 |
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ftimr:oai:imr.brage.unit.no:11250/2770050 2023-05-15T15:38:16+02:00 Multiple configurations and fluctuating trophic control in the Barents Sea food-web Sivel, Elliot Manuarii Planque, Benjamin Lindstrøm, Ulf Yoccoz, Nigel G. 2021 application/pdf https://hdl.handle.net/11250/2770050 https://doi.org/10.1371/journal.pone.0254015 eng eng PLOS ONE. 2021, 16 (7), . urn:issn:1932-6203 https://hdl.handle.net/11250/2770050 https://doi.org/10.1371/journal.pone.0254015 cristin:1926449 20 16 PLOS ONE 7 Peer reviewed Journal article 2021 ftimr https://doi.org/10.1371/journal.pone.0254015 2021-09-23T20:15:38Z The Barents Sea is a subarctic shelf sea which has experienced major changes during the past decades. From ecological time-series, three different food-web configurations, reflecting successive shifts of dominance of pelagic fish, demersal fish, and zooplankton, as well as varying trophic control have been identified in the last decades. This covers a relatively short time-period as available ecological time-series are often relatively short. As we lack information for prior time-periods, we use a chance and necessity model to investigate if there are other possible configurations of the Barents Sea food-web than those observed in the ecological time-series, and if this food-web is characterized by a persistent trophic control. We perform food-web simulations using the Non-Deterministic Network Dynamic model (NDND) for the Barents Sea, identify food-web configurations and compare those to historical reconstructions of food-web dynamics. Biomass configurations fall into four major types and three trophic pathways. Reconstructed data match one of the major biomass configurations but is characterized by a different trophic pathway than most of the simulated configurations. The simulated biomass displays fluctuations between bottom-up and top-down trophic control over time rather than persistent trophic control. Our results show that the configurations we have reconstructed are strongly overlapping with our simulated configurations, though they represent only a subset of the possible configurations of the Barents Sea food-web. publishedVersion Article in Journal/Newspaper Barents Sea Subarctic Institute for Marine Research: Brage IMR Barents Sea PLOS ONE 16 7 e0254015 |
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Open Polar |
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Institute for Marine Research: Brage IMR |
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language |
English |
description |
The Barents Sea is a subarctic shelf sea which has experienced major changes during the past decades. From ecological time-series, three different food-web configurations, reflecting successive shifts of dominance of pelagic fish, demersal fish, and zooplankton, as well as varying trophic control have been identified in the last decades. This covers a relatively short time-period as available ecological time-series are often relatively short. As we lack information for prior time-periods, we use a chance and necessity model to investigate if there are other possible configurations of the Barents Sea food-web than those observed in the ecological time-series, and if this food-web is characterized by a persistent trophic control. We perform food-web simulations using the Non-Deterministic Network Dynamic model (NDND) for the Barents Sea, identify food-web configurations and compare those to historical reconstructions of food-web dynamics. Biomass configurations fall into four major types and three trophic pathways. Reconstructed data match one of the major biomass configurations but is characterized by a different trophic pathway than most of the simulated configurations. The simulated biomass displays fluctuations between bottom-up and top-down trophic control over time rather than persistent trophic control. Our results show that the configurations we have reconstructed are strongly overlapping with our simulated configurations, though they represent only a subset of the possible configurations of the Barents Sea food-web. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Sivel, Elliot Manuarii Planque, Benjamin Lindstrøm, Ulf Yoccoz, Nigel G. |
spellingShingle |
Sivel, Elliot Manuarii Planque, Benjamin Lindstrøm, Ulf Yoccoz, Nigel G. Multiple configurations and fluctuating trophic control in the Barents Sea food-web |
author_facet |
Sivel, Elliot Manuarii Planque, Benjamin Lindstrøm, Ulf Yoccoz, Nigel G. |
author_sort |
Sivel, Elliot Manuarii |
title |
Multiple configurations and fluctuating trophic control in the Barents Sea food-web |
title_short |
Multiple configurations and fluctuating trophic control in the Barents Sea food-web |
title_full |
Multiple configurations and fluctuating trophic control in the Barents Sea food-web |
title_fullStr |
Multiple configurations and fluctuating trophic control in the Barents Sea food-web |
title_full_unstemmed |
Multiple configurations and fluctuating trophic control in the Barents Sea food-web |
title_sort |
multiple configurations and fluctuating trophic control in the barents sea food-web |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2770050 https://doi.org/10.1371/journal.pone.0254015 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Subarctic |
genre_facet |
Barents Sea Subarctic |
op_source |
20 16 PLOS ONE 7 |
op_relation |
PLOS ONE. 2021, 16 (7), . urn:issn:1932-6203 https://hdl.handle.net/11250/2770050 https://doi.org/10.1371/journal.pone.0254015 cristin:1926449 |
op_doi |
https://doi.org/10.1371/journal.pone.0254015 |
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PLOS ONE |
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16 |
container_issue |
7 |
container_start_page |
e0254015 |
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