What we do in the dark: Prevalence of omnivorous feeding activity in Arctic zooplankton during polar night
During the productive polar day, zooplankton and sea-ice amphipods fulfill a critical role in energy transfer from primary producers to higher trophic-level species in Arctic marine ecosystems. Recent polar night studies on zooplankton and sea-ice amphipods suggest higher levels of biological activi...
Published in: | Limnology and Oceanography |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hdl.handle.net/11250/3083863 https://doi.org/10.1002/lno.12389 |
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ftunivbergen:oai:bora.uib.no:11250/3083863 2023-09-05T13:17:06+02:00 What we do in the dark: Prevalence of omnivorous feeding activity in Arctic zooplankton during polar night Kunisch, Erin Graeve, Martin Gradinger, Rolf Rudolf Flores, Hauke Varpe, Øystein Bluhm, Bodil 2023 application/pdf https://hdl.handle.net/11250/3083863 https://doi.org/10.1002/lno.12389 eng eng Wiley urn:issn:0024-3590 https://hdl.handle.net/11250/3083863 https://doi.org/10.1002/lno.12389 cristin:2163739 Limnology and Oceanography. 2023. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2023 The Author(s) Limnology and Oceanography Journal article Peer reviewed 2023 ftunivbergen https://doi.org/10.1002/lno.12389 2023-08-16T23:07:23Z During the productive polar day, zooplankton and sea-ice amphipods fulfill a critical role in energy transfer from primary producers to higher trophic-level species in Arctic marine ecosystems. Recent polar night studies on zooplankton and sea-ice amphipods suggest higher levels of biological activity than previously assumed. However, it is unknown if these invertebrates maintain polar night activity on stored lipids, opportunistic feeding, or a combination of both. To assess how zooplankton (copepods, amphipods, and krill) and sea-ice amphipods support themselves on seasonally varying resources, we studied their lipid classes, fatty acid compositions, and compound-specific stable isotopes of trophic biomarker fatty acids during polar day (June/July) and polar night (January). Lipid storage and fatty acid results confirm previously described dietary sources in all species during polar day. We found evidence of polar night feeding in all species, including shifts from herbivory to omnivory. Sympagic-, pelagic-, and Calanus spp.-derived carbon sources supported zooplankton and sea-ice amphipods in both seasons. We provide a first indication of polar night feeding of sea-ice amphipods in the pelagic realm. publishedVersion Article in Journal/Newspaper Arctic polar night Sea ice Zooplankton Copepods University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Limnology and Oceanography |
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Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
language |
English |
description |
During the productive polar day, zooplankton and sea-ice amphipods fulfill a critical role in energy transfer from primary producers to higher trophic-level species in Arctic marine ecosystems. Recent polar night studies on zooplankton and sea-ice amphipods suggest higher levels of biological activity than previously assumed. However, it is unknown if these invertebrates maintain polar night activity on stored lipids, opportunistic feeding, or a combination of both. To assess how zooplankton (copepods, amphipods, and krill) and sea-ice amphipods support themselves on seasonally varying resources, we studied their lipid classes, fatty acid compositions, and compound-specific stable isotopes of trophic biomarker fatty acids during polar day (June/July) and polar night (January). Lipid storage and fatty acid results confirm previously described dietary sources in all species during polar day. We found evidence of polar night feeding in all species, including shifts from herbivory to omnivory. Sympagic-, pelagic-, and Calanus spp.-derived carbon sources supported zooplankton and sea-ice amphipods in both seasons. We provide a first indication of polar night feeding of sea-ice amphipods in the pelagic realm. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Kunisch, Erin Graeve, Martin Gradinger, Rolf Rudolf Flores, Hauke Varpe, Øystein Bluhm, Bodil |
spellingShingle |
Kunisch, Erin Graeve, Martin Gradinger, Rolf Rudolf Flores, Hauke Varpe, Øystein Bluhm, Bodil What we do in the dark: Prevalence of omnivorous feeding activity in Arctic zooplankton during polar night |
author_facet |
Kunisch, Erin Graeve, Martin Gradinger, Rolf Rudolf Flores, Hauke Varpe, Øystein Bluhm, Bodil |
author_sort |
Kunisch, Erin |
title |
What we do in the dark: Prevalence of omnivorous feeding activity in Arctic zooplankton during polar night |
title_short |
What we do in the dark: Prevalence of omnivorous feeding activity in Arctic zooplankton during polar night |
title_full |
What we do in the dark: Prevalence of omnivorous feeding activity in Arctic zooplankton during polar night |
title_fullStr |
What we do in the dark: Prevalence of omnivorous feeding activity in Arctic zooplankton during polar night |
title_full_unstemmed |
What we do in the dark: Prevalence of omnivorous feeding activity in Arctic zooplankton during polar night |
title_sort |
what we do in the dark: prevalence of omnivorous feeding activity in arctic zooplankton during polar night |
publisher |
Wiley |
publishDate |
2023 |
url |
https://hdl.handle.net/11250/3083863 https://doi.org/10.1002/lno.12389 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic polar night Sea ice Zooplankton Copepods |
genre_facet |
Arctic polar night Sea ice Zooplankton Copepods |
op_source |
Limnology and Oceanography |
op_relation |
urn:issn:0024-3590 https://hdl.handle.net/11250/3083863 https://doi.org/10.1002/lno.12389 cristin:2163739 Limnology and Oceanography. 2023. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2023 The Author(s) |
op_doi |
https://doi.org/10.1002/lno.12389 |
container_title |
Limnology and Oceanography |
_version_ |
1776198412117475328 |