Reduced efficiency of pelagic–benthic coupling in the Arctic deep sea during lower ice cover
Pelagic–benthic coupling describes the connection between surface-water production and seafloor habitats via energy, nutrient and mass exchange. Massive ice loss and warming in the poorly studied Arctic Chukchi Borderland are hypothesized to affect this coupling. The strength of pelagic–benthic coup...
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Online Access: | https://hdl.handle.net/10037/30126 https://doi.org/10.1038/s41598-023-33854-0 |
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ftunivtroemsoe:oai:munin.uit.no:10037/30126 2023-09-05T13:15:43+02:00 Reduced efficiency of pelagic–benthic coupling in the Arctic deep sea during lower ice cover Zhulay, Irina Iken, Katrin Renaud, Paul Eric Kosobokova, Ksenia Bluhm, Bodil 2023-04-25 https://hdl.handle.net/10037/30126 https://doi.org/10.1038/s41598-023-33854-0 eng eng Springer Nature Scientific Reports Zhulay, Iken, Renaud, Kosobokova, Bluhm. Reduced efficiency of pelagic–benthic coupling in the Arctic deep sea during lower ice cover. Scientific Reports. 2023;13(1) FRIDAID 2148334 doi:10.1038/s41598-023-33854-0 2045-2322 https://hdl.handle.net/10037/30126 Attribution 4.0 International (CC BY 4.0) openAccess Copyright 2023 The Author(s) https://creativecommons.org/licenses/by/4.0 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2023 ftunivtroemsoe https://doi.org/10.1038/s41598-023-33854-0 2023-08-23T23:07:11Z Pelagic–benthic coupling describes the connection between surface-water production and seafloor habitats via energy, nutrient and mass exchange. Massive ice loss and warming in the poorly studied Arctic Chukchi Borderland are hypothesized to affect this coupling. The strength of pelagic–benthic coupling was compared between 2 years varying in climate settings, 2005 and 2016, based on δ 13 C and δ 15 N stable isotopes of food-web end-members and pelagic and deep-sea benthic consumers. Considerably higher isotopic niche overlap and generally shorter isotopic distance were found between pelagic and benthic food web components in 2005 than in 2016, suggesting weaker coupling in the latter, low-ice year. δ 15 N values indicated more refractory food consumed by benthos in 2016 and fresher food reaching the seafloor in 2005. Higher δ 13 C values of zooplankton indirectly suggested a higher contribution of ice algae in 2005 than 2016. The difference in pelagic–benthic coupling between these years is consistent with higher energy retention within the pelagic system, perhaps due to strong stratification in the Amerasian Basin in the recent decade. Weaker coupling to the benthos can be expected to continue with ice loss in the study area, perhaps reducing benthic biomass and remineralization capacity; monitoring of the area is needed to confirm this prediction. Article in Journal/Newspaper Arctic Arctic Chukchi ice algae Zooplankton University of Tromsø: Munin Open Research Archive Arctic Chukchi Borderland ENVELOPE(-165.000,-165.000,77.000,77.000) Scientific Reports 13 1 |
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Open Polar |
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University of Tromsø: Munin Open Research Archive |
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ftunivtroemsoe |
language |
English |
description |
Pelagic–benthic coupling describes the connection between surface-water production and seafloor habitats via energy, nutrient and mass exchange. Massive ice loss and warming in the poorly studied Arctic Chukchi Borderland are hypothesized to affect this coupling. The strength of pelagic–benthic coupling was compared between 2 years varying in climate settings, 2005 and 2016, based on δ 13 C and δ 15 N stable isotopes of food-web end-members and pelagic and deep-sea benthic consumers. Considerably higher isotopic niche overlap and generally shorter isotopic distance were found between pelagic and benthic food web components in 2005 than in 2016, suggesting weaker coupling in the latter, low-ice year. δ 15 N values indicated more refractory food consumed by benthos in 2016 and fresher food reaching the seafloor in 2005. Higher δ 13 C values of zooplankton indirectly suggested a higher contribution of ice algae in 2005 than 2016. The difference in pelagic–benthic coupling between these years is consistent with higher energy retention within the pelagic system, perhaps due to strong stratification in the Amerasian Basin in the recent decade. Weaker coupling to the benthos can be expected to continue with ice loss in the study area, perhaps reducing benthic biomass and remineralization capacity; monitoring of the area is needed to confirm this prediction. |
format |
Article in Journal/Newspaper |
author |
Zhulay, Irina Iken, Katrin Renaud, Paul Eric Kosobokova, Ksenia Bluhm, Bodil |
spellingShingle |
Zhulay, Irina Iken, Katrin Renaud, Paul Eric Kosobokova, Ksenia Bluhm, Bodil Reduced efficiency of pelagic–benthic coupling in the Arctic deep sea during lower ice cover |
author_facet |
Zhulay, Irina Iken, Katrin Renaud, Paul Eric Kosobokova, Ksenia Bluhm, Bodil |
author_sort |
Zhulay, Irina |
title |
Reduced efficiency of pelagic–benthic coupling in the Arctic deep sea during lower ice cover |
title_short |
Reduced efficiency of pelagic–benthic coupling in the Arctic deep sea during lower ice cover |
title_full |
Reduced efficiency of pelagic–benthic coupling in the Arctic deep sea during lower ice cover |
title_fullStr |
Reduced efficiency of pelagic–benthic coupling in the Arctic deep sea during lower ice cover |
title_full_unstemmed |
Reduced efficiency of pelagic–benthic coupling in the Arctic deep sea during lower ice cover |
title_sort |
reduced efficiency of pelagic–benthic coupling in the arctic deep sea during lower ice cover |
publisher |
Springer Nature |
publishDate |
2023 |
url |
https://hdl.handle.net/10037/30126 https://doi.org/10.1038/s41598-023-33854-0 |
long_lat |
ENVELOPE(-165.000,-165.000,77.000,77.000) |
geographic |
Arctic Chukchi Borderland |
geographic_facet |
Arctic Chukchi Borderland |
genre |
Arctic Arctic Chukchi ice algae Zooplankton |
genre_facet |
Arctic Arctic Chukchi ice algae Zooplankton |
op_relation |
Scientific Reports Zhulay, Iken, Renaud, Kosobokova, Bluhm. Reduced efficiency of pelagic–benthic coupling in the Arctic deep sea during lower ice cover. Scientific Reports. 2023;13(1) FRIDAID 2148334 doi:10.1038/s41598-023-33854-0 2045-2322 https://hdl.handle.net/10037/30126 |
op_rights |
Attribution 4.0 International (CC BY 4.0) openAccess Copyright 2023 The Author(s) https://creativecommons.org/licenses/by/4.0 |
op_doi |
https://doi.org/10.1038/s41598-023-33854-0 |
container_title |
Scientific Reports |
container_volume |
13 |
container_issue |
1 |
_version_ |
1776197560531156992 |