Climatic and ecological drivers of euphausiid community structure vary spatially in the Barents Sea: relationships from a long time series (1952–2009)
Euphausiids play an important role in transferring energy from ephemeral primary producers to fish, seabirds, and marine mammals in the Barents Sea ecosystem. Climatic impacts have been suggested to occur at all levels of the Barents Sea food-web, but adequate exploration of these phenomena on ecolo...
Published in: | Frontiers in Marine Science |
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Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Frontiers
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Online Access: | http://hdl.handle.net/10230/44920 https://doi.org/10.3389/fmars.2014.00074 |
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ftupompeufabra:oai:repositori.upf.edu:10230/44920 |
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Open Polar |
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UPF Digital Repository (Universitat Pompeu Fabra, Barcelona) |
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ftupompeufabra |
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English |
topic |
Arctic Capelin Cod Krill Pelagic food web |
spellingShingle |
Arctic Capelin Cod Krill Pelagic food web Orlova, Emma L. Dolgov, Andrey V. Renaud, Paul E. Greenacre, Michael Halsband, Claudia Ivshin, Victor A. Climatic and ecological drivers of euphausiid community structure vary spatially in the Barents Sea: relationships from a long time series (1952–2009) |
topic_facet |
Arctic Capelin Cod Krill Pelagic food web |
description |
Euphausiids play an important role in transferring energy from ephemeral primary producers to fish, seabirds, and marine mammals in the Barents Sea ecosystem. Climatic impacts have been suggested to occur at all levels of the Barents Sea food-web, but adequate exploration of these phenomena on ecologically relevant spatial scales has not been integrated sufficiently. We used a time-series of euphausiid abundance data spanning 58 years, one of the longest biological time-series in the Arctic, to explore qualitative and quantitative relationships among climate, euphausiids, and their predators, and how these parameters vary spatially in the Barents Sea. We detected four main hydrographic regions, each with distinct patterns of interannual variability in euphausiid abundance and community structure. Assemblages varied primarily in the relative abundance of Thysanoessa inermis vs. T. raschii, or T. inermis vs. T. longicaudata, and Meganyctiphanes norvegica. Climate proxies and the abundance of capelin or cod explained 30–60% of the variability in euphausiid abundance in each region. Climate also influenced patterns of variability in euphausiid community structure, but correlations were generally weaker. Advection of boreal euphausiid taxa from the Norwegian Sea is clearly more prominent in warmer years than in colder years, and interacts with seasonal fish migrations to help explain spatial differences in primary drivers of euphausiid community structure. Non-linear effects of predators were common, and must be considered more carefully if a mechanistic understanding of the ecosystem is to be achieved. Quantitative relationships among euphausiid abundance, climate proxies, and predator stock-sizes derived from these time series are valuable for ecological models being used to predict impacts of climate change on the Barents Sea ecosystem, and how the system should be managed. We also gratefully acknowledge Chris Emblow for graphics support, and financial support from Statoil and Akvaplan-niva. Michael Greenacre's research is partially supported by grant MTM2012-37195 of the Spanish Ministry of Economy and Competitiveness. This manuscript was improved by comments from F. Buchholz. |
format |
Article in Journal/Newspaper |
author |
Orlova, Emma L. Dolgov, Andrey V. Renaud, Paul E. Greenacre, Michael Halsband, Claudia Ivshin, Victor A. |
author_facet |
Orlova, Emma L. Dolgov, Andrey V. Renaud, Paul E. Greenacre, Michael Halsband, Claudia Ivshin, Victor A. |
author_sort |
Orlova, Emma L. |
title |
Climatic and ecological drivers of euphausiid community structure vary spatially in the Barents Sea: relationships from a long time series (1952–2009) |
title_short |
Climatic and ecological drivers of euphausiid community structure vary spatially in the Barents Sea: relationships from a long time series (1952–2009) |
title_full |
Climatic and ecological drivers of euphausiid community structure vary spatially in the Barents Sea: relationships from a long time series (1952–2009) |
title_fullStr |
Climatic and ecological drivers of euphausiid community structure vary spatially in the Barents Sea: relationships from a long time series (1952–2009) |
title_full_unstemmed |
Climatic and ecological drivers of euphausiid community structure vary spatially in the Barents Sea: relationships from a long time series (1952–2009) |
title_sort |
climatic and ecological drivers of euphausiid community structure vary spatially in the barents sea: relationships from a long time series (1952–2009) |
publisher |
Frontiers |
url |
http://hdl.handle.net/10230/44920 https://doi.org/10.3389/fmars.2014.00074 |
long_lat |
ENVELOPE(23.913,23.913,66.136,66.136) |
geographic |
Arctic Barents Sea Niva Norwegian Sea |
geographic_facet |
Arctic Barents Sea Niva Norwegian Sea |
genre |
Arctic Barents Sea Climate change Meganyctiphanes norvegica Norwegian Sea Thysanoessa inermis |
genre_facet |
Arctic Barents Sea Climate change Meganyctiphanes norvegica Norwegian Sea Thysanoessa inermis |
op_relation |
Frontiers in Marine Science. 2015 Jan 6;1:74 info:eu-repo/grantAgreement/ES/3PN/MTM2012-37195 Orlova EL, Dolgov AV, Renaud PE, Greenacre M, Halsband C, Ivshin VA. Climatic and ecological drivers of euphausiid community structure vary spatially in the Barents Sea: relationships from a long time series (1952–2009). Front Mar Sci. 2015 Jan 6;1:74. DOI:10.3389/fmars.2014.00074 2296-7745 http://hdl.handle.net/10230/44920 http://dx.doi.org/10.3389/fmars.2014.00074 |
op_rights |
© 2015 Orlova, Dolgov, Renaud, Greenacre, Halsband and Ivshin. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2014.00074 |
container_title |
Frontiers in Marine Science |
container_volume |
1 |
_version_ |
1766335490247622656 |
spelling |
ftupompeufabra:oai:repositori.upf.edu:10230/44920 2023-05-15T15:03:38+02:00 Climatic and ecological drivers of euphausiid community structure vary spatially in the Barents Sea: relationships from a long time series (1952–2009) Orlova, Emma L. Dolgov, Andrey V. Renaud, Paul E. Greenacre, Michael Halsband, Claudia Ivshin, Victor A. application/pdf http://hdl.handle.net/10230/44920 https://doi.org/10.3389/fmars.2014.00074 eng eng Frontiers Frontiers in Marine Science. 2015 Jan 6;1:74 info:eu-repo/grantAgreement/ES/3PN/MTM2012-37195 Orlova EL, Dolgov AV, Renaud PE, Greenacre M, Halsband C, Ivshin VA. Climatic and ecological drivers of euphausiid community structure vary spatially in the Barents Sea: relationships from a long time series (1952–2009). Front Mar Sci. 2015 Jan 6;1:74. DOI:10.3389/fmars.2014.00074 2296-7745 http://hdl.handle.net/10230/44920 http://dx.doi.org/10.3389/fmars.2014.00074 © 2015 Orlova, Dolgov, Renaud, Greenacre, Halsband and Ivshin. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess CC-BY Arctic Capelin Cod Krill Pelagic food web info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion ftupompeufabra https://doi.org/10.3389/fmars.2014.00074 2021-08-03T23:19:44Z Euphausiids play an important role in transferring energy from ephemeral primary producers to fish, seabirds, and marine mammals in the Barents Sea ecosystem. Climatic impacts have been suggested to occur at all levels of the Barents Sea food-web, but adequate exploration of these phenomena on ecologically relevant spatial scales has not been integrated sufficiently. We used a time-series of euphausiid abundance data spanning 58 years, one of the longest biological time-series in the Arctic, to explore qualitative and quantitative relationships among climate, euphausiids, and their predators, and how these parameters vary spatially in the Barents Sea. We detected four main hydrographic regions, each with distinct patterns of interannual variability in euphausiid abundance and community structure. Assemblages varied primarily in the relative abundance of Thysanoessa inermis vs. T. raschii, or T. inermis vs. T. longicaudata, and Meganyctiphanes norvegica. Climate proxies and the abundance of capelin or cod explained 30–60% of the variability in euphausiid abundance in each region. Climate also influenced patterns of variability in euphausiid community structure, but correlations were generally weaker. Advection of boreal euphausiid taxa from the Norwegian Sea is clearly more prominent in warmer years than in colder years, and interacts with seasonal fish migrations to help explain spatial differences in primary drivers of euphausiid community structure. Non-linear effects of predators were common, and must be considered more carefully if a mechanistic understanding of the ecosystem is to be achieved. Quantitative relationships among euphausiid abundance, climate proxies, and predator stock-sizes derived from these time series are valuable for ecological models being used to predict impacts of climate change on the Barents Sea ecosystem, and how the system should be managed. We also gratefully acknowledge Chris Emblow for graphics support, and financial support from Statoil and Akvaplan-niva. Michael Greenacre's research is partially supported by grant MTM2012-37195 of the Spanish Ministry of Economy and Competitiveness. This manuscript was improved by comments from F. Buchholz. Article in Journal/Newspaper Arctic Barents Sea Climate change Meganyctiphanes norvegica Norwegian Sea Thysanoessa inermis UPF Digital Repository (Universitat Pompeu Fabra, Barcelona) Arctic Barents Sea Niva ENVELOPE(23.913,23.913,66.136,66.136) Norwegian Sea Frontiers in Marine Science 1 |