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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Autores principales:	Elliot Sivel, Benjamin Planque, Ulf Lindstrøm, Nigel G Yoccoz
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6a2b29ef44d143f8a0e0f61f235d03cc
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spelling	oai:doaj.org-article:6a2b29ef44d143f8a0e0f61f235d03cc2021-12-02T20:09:24ZMultiple configurations and fluctuating trophic control in the Barents Sea food-web.1932-620310.1371/journal.pone.0254015https://doaj.org/article/6a2b29ef44d143f8a0e0f61f235d03cc2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0254015https://doaj.org/toc/1932-6203The 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.Elliot SivelBenjamin PlanqueUlf LindstrømNigel G YoccozPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0254015 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Elliot Sivel Benjamin Planque Ulf Lindstrøm Nigel G Yoccoz Multiple configurations and fluctuating trophic control in the Barents Sea food-web.
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.
format	article
author	Elliot Sivel Benjamin Planque Ulf Lindstrøm Nigel G Yoccoz
author_facet	Elliot Sivel Benjamin Planque Ulf Lindstrøm Nigel G Yoccoz
author_sort	Elliot Sivel
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.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/6a2b29ef44d143f8a0e0f61f235d03cc
work_keys_str_mv	AT elliotsivel multipleconfigurationsandfluctuatingtrophiccontrolinthebarentsseafoodweb AT benjaminplanque multipleconfigurationsandfluctuatingtrophiccontrolinthebarentsseafoodweb AT ulflindstrøm multipleconfigurationsandfluctuatingtrophiccontrolinthebarentsseafoodweb AT nigelgyoccoz multipleconfigurationsandfluctuatingtrophiccontrolinthebarentsseafoodweb
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Multiple configurations and fluctuating trophic control in the Barents Sea food-web.

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