Dependency of Arctic zooplankton on pelagic food sources: New insights from fatty acid and stable isotope analyses
Global warming causes dramatic environmental change to Arctic ecosystems. While pelagic primary production is initiated earlier and its intensity can be increased due to earlier ice melt and extended open-water periods, sea-ice primary production is progressively confined on a spatio-temporal scale,...
Published in: | Limnology and Oceanography |
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Wiley
2023
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Online Access: | https://epic.awi.de/id/eprint/58124/ https://epic.awi.de/id/eprint/58124/1/Limnology%20Oceanography%20-%202023%20-%20Kohlbach%20-%20Dependency%20of%20Arctic%20zooplankton%20on%20pelagic%20food%20sources%20New%20insights%20from.pdf https://doi.org/10.1002/lno.12423 https://hdl.handle.net/10013/epic.458747ce-0db6-45db-b5ff-b01b492b0fe0 |
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ftawi:oai:epic.awi.de:58124 2023-12-17T10:23:32+01:00 Dependency of Arctic zooplankton on pelagic food sources: New insights from fatty acid and stable isotope analyses Kohlbach, Doreen Lebreton, Benoit Guillou, Gaёl Wold, Anette Hop, Haakon Graeve, Martin Assmy, Philipp 2023-01-01 application/pdf https://epic.awi.de/id/eprint/58124/ https://epic.awi.de/id/eprint/58124/1/Limnology%20Oceanography%20-%202023%20-%20Kohlbach%20-%20Dependency%20of%20Arctic%20zooplankton%20on%20pelagic%20food%20sources%20New%20insights%20from.pdf https://doi.org/10.1002/lno.12423 https://hdl.handle.net/10013/epic.458747ce-0db6-45db-b5ff-b01b492b0fe0 unknown Wiley https://epic.awi.de/id/eprint/58124/1/Limnology%20Oceanography%20-%202023%20-%20Kohlbach%20-%20Dependency%20of%20Arctic%20zooplankton%20on%20pelagic%20food%20sources%20New%20insights%20from.pdf Kohlbach, D. , Lebreton, B. , Guillou, G. , Wold, A. , Hop, H. , Graeve, M. orcid:0000-0002-2294-1915 and Assmy, P. (2023) Dependency of Arctic zooplankton on pelagic food sources: New insights from fatty acid and stable isotope analyses , Limnology and Oceanography, 68 , pp. 2346-2358 . doi:10.1002/lno.12423 <https://doi.org/10.1002/lno.12423> , hdl:10013/epic.458747ce-0db6-45db-b5ff-b01b492b0fe0 EPIC3Limnology and Oceanography, Wiley, 68, pp. 2346-2358, ISSN: 0024-3590 Article isiRev 2023 ftawi https://doi.org/10.1002/lno.12423 2023-11-20T00:23:15Z Global warming causes dramatic environmental change to Arctic ecosystems. While pelagic primary production is initiated earlier and its intensity can be increased due to earlier ice melt and extended open-water periods, sea-ice primary production is progressively confined on a spatio-temporal scale, leading to unknown consequences for the ice-associated (sympagic) food web. Understanding ecological responses to changes in the availability and composition of pelagic and sympagic food sources is crucial to determine potential changes of food-web structure and functioning in Arctic marine communities under increasingly ice-free conditions. Focus was placed on the importance of suspended particulate organic matter vs. sympagic organic matter for 12 zooplankton species with different feeding modes covering five taxonomic groups (copepods, krill, amphipods, chaetognaths, and appendicularians) at two ice-covered, but environmentally different, stations in the north-western Barents Sea in August 2019. Contributions of diatom- and flagellate-associated fatty acids (FAs) to total lipid content and carbon stable isotopic compositions of these FAs were used to discriminate food sources and trace flows of organic matter in marine food webs. Combination of proportional contributions of FA markers with FA isotopic composition indicated that consumers mostly relied, directly (herbivorous species), or indirectly (omnivorous and carnivorous species), on pelagic diatoms and flagellates, independently of environmental conditions at the sampling locations, trophic position, and feeding mode. Differences were nevertheless observed between species. Contrary to other studies demonstrating a high importance of sympagic organic matter for food-web processes, our results highlight the complexity and variability of trophic structures and dependencies in different Arctic food webs. Article in Journal/Newspaper Arctic Arctic Barents Sea Global warming Sea ice Zooplankton Copepods Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Barents Sea Limnology and Oceanography 68 10 2346 2358 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Global warming causes dramatic environmental change to Arctic ecosystems. While pelagic primary production is initiated earlier and its intensity can be increased due to earlier ice melt and extended open-water periods, sea-ice primary production is progressively confined on a spatio-temporal scale, leading to unknown consequences for the ice-associated (sympagic) food web. Understanding ecological responses to changes in the availability and composition of pelagic and sympagic food sources is crucial to determine potential changes of food-web structure and functioning in Arctic marine communities under increasingly ice-free conditions. Focus was placed on the importance of suspended particulate organic matter vs. sympagic organic matter for 12 zooplankton species with different feeding modes covering five taxonomic groups (copepods, krill, amphipods, chaetognaths, and appendicularians) at two ice-covered, but environmentally different, stations in the north-western Barents Sea in August 2019. Contributions of diatom- and flagellate-associated fatty acids (FAs) to total lipid content and carbon stable isotopic compositions of these FAs were used to discriminate food sources and trace flows of organic matter in marine food webs. Combination of proportional contributions of FA markers with FA isotopic composition indicated that consumers mostly relied, directly (herbivorous species), or indirectly (omnivorous and carnivorous species), on pelagic diatoms and flagellates, independently of environmental conditions at the sampling locations, trophic position, and feeding mode. Differences were nevertheless observed between species. Contrary to other studies demonstrating a high importance of sympagic organic matter for food-web processes, our results highlight the complexity and variability of trophic structures and dependencies in different Arctic food webs. |
format |
Article in Journal/Newspaper |
author |
Kohlbach, Doreen Lebreton, Benoit Guillou, Gaёl Wold, Anette Hop, Haakon Graeve, Martin Assmy, Philipp |
spellingShingle |
Kohlbach, Doreen Lebreton, Benoit Guillou, Gaёl Wold, Anette Hop, Haakon Graeve, Martin Assmy, Philipp Dependency of Arctic zooplankton on pelagic food sources: New insights from fatty acid and stable isotope analyses |
author_facet |
Kohlbach, Doreen Lebreton, Benoit Guillou, Gaёl Wold, Anette Hop, Haakon Graeve, Martin Assmy, Philipp |
author_sort |
Kohlbach, Doreen |
title |
Dependency of Arctic zooplankton on pelagic food sources: New insights from fatty acid and stable isotope analyses |
title_short |
Dependency of Arctic zooplankton on pelagic food sources: New insights from fatty acid and stable isotope analyses |
title_full |
Dependency of Arctic zooplankton on pelagic food sources: New insights from fatty acid and stable isotope analyses |
title_fullStr |
Dependency of Arctic zooplankton on pelagic food sources: New insights from fatty acid and stable isotope analyses |
title_full_unstemmed |
Dependency of Arctic zooplankton on pelagic food sources: New insights from fatty acid and stable isotope analyses |
title_sort |
dependency of arctic zooplankton on pelagic food sources: new insights from fatty acid and stable isotope analyses |
publisher |
Wiley |
publishDate |
2023 |
url |
https://epic.awi.de/id/eprint/58124/ https://epic.awi.de/id/eprint/58124/1/Limnology%20Oceanography%20-%202023%20-%20Kohlbach%20-%20Dependency%20of%20Arctic%20zooplankton%20on%20pelagic%20food%20sources%20New%20insights%20from.pdf https://doi.org/10.1002/lno.12423 https://hdl.handle.net/10013/epic.458747ce-0db6-45db-b5ff-b01b492b0fe0 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Arctic Barents Sea Global warming Sea ice Zooplankton Copepods |
genre_facet |
Arctic Arctic Barents Sea Global warming Sea ice Zooplankton Copepods |
op_source |
EPIC3Limnology and Oceanography, Wiley, 68, pp. 2346-2358, ISSN: 0024-3590 |
op_relation |
https://epic.awi.de/id/eprint/58124/1/Limnology%20Oceanography%20-%202023%20-%20Kohlbach%20-%20Dependency%20of%20Arctic%20zooplankton%20on%20pelagic%20food%20sources%20New%20insights%20from.pdf Kohlbach, D. , Lebreton, B. , Guillou, G. , Wold, A. , Hop, H. , Graeve, M. orcid:0000-0002-2294-1915 and Assmy, P. (2023) Dependency of Arctic zooplankton on pelagic food sources: New insights from fatty acid and stable isotope analyses , Limnology and Oceanography, 68 , pp. 2346-2358 . doi:10.1002/lno.12423 <https://doi.org/10.1002/lno.12423> , hdl:10013/epic.458747ce-0db6-45db-b5ff-b01b492b0fe0 |
op_doi |
https://doi.org/10.1002/lno.12423 |
container_title |
Limnology and Oceanography |
container_volume |
68 |
container_issue |
10 |
container_start_page |
2346 |
op_container_end_page |
2358 |
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1785558625856520192 |