Essential omega‐3 fatty acids are depleted in sea ice and pelagic algae of the Central Arctic Ocean
Microalgae are the main source of the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), essential for the healthy development of most marine and terrestrial fauna including humans. Inverse correlations of algal EPA and DHA proportions (% of total fatty acids) with tempe...
Published in: | Global Change Biology |
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2024
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Online Access: | https://pure.uhi.ac.uk/en/publications/964a584b-0415-4939-ad61-35b5be61d24e https://doi.org/10.1111/gcb.17090 https://pureadmin.uhi.ac.uk/ws/files/49404134/Global_Change_Biology_-_2023_-_Schmidt_-_Essential_omega_3_fatty_acids_are_depleted_in_sea_ice_and_pelagic_algae_of_the.pdf https://onlinelibrary.wiley.com/doi/10.1111/gcb.17090 |
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ftuhipublicatio:oai:pure.atira.dk:publications/964a584b-0415-4939-ad61-35b5be61d24e 2024-09-15T17:51:40+00:00 Essential omega‐3 fatty acids are depleted in sea ice and pelagic algae of the Central Arctic Ocean Schmidt, Katrin Graeve, Martin Hoppe, Clara j. m. Torres‐valdes, Sinhué Welteke, Nahid Whitmore, Laura m. Anhaus, Philipp Atkinson, Angus Belt, Simon t. Brenneis, Tina Campbell, Robert g. Castellani, Giulia Copeman, Louise a. Flores, Hauke Fong, Allison a. Hildebrandt, Nicole Kohlbach, Doreen Nielsen, Jens m. Parrish, Christopher c. Rad‐menéndez, Cecilia Rokitta, Sebastian d. Tippenhauer, Sandra Zhuang, Yanpei 2024-01-01 application/pdf https://pure.uhi.ac.uk/en/publications/964a584b-0415-4939-ad61-35b5be61d24e https://doi.org/10.1111/gcb.17090 https://pureadmin.uhi.ac.uk/ws/files/49404134/Global_Change_Biology_-_2023_-_Schmidt_-_Essential_omega_3_fatty_acids_are_depleted_in_sea_ice_and_pelagic_algae_of_the.pdf https://onlinelibrary.wiley.com/doi/10.1111/gcb.17090 eng eng https://pure.uhi.ac.uk/en/publications/964a584b-0415-4939-ad61-35b5be61d24e info:eu-repo/semantics/openAccess Schmidt , K , Graeve , M , Hoppe , C J M , Torres‐valdes , S , Welteke , N , Whitmore , L M , Anhaus , P , Atkinson , A , Belt , S T , Brenneis , T , Campbell , R G , Castellani , G , Copeman , L A , Flores , H , Fong , A A , Hildebrandt , N , Kohlbach , D , Nielsen , J M , Parrish , C C , Rad‐menéndez , C , Rokitta , S D , Tippenhauer , S & Zhuang , Y 2024 , ' Essential omega‐3 fatty acids are depleted in sea ice and pelagic algae of the Central Arctic Ocean ' , Global Change Biology , vol. 30 , no. 1 , e17090 . https://doi.org/10.1111/gcb.17090 , https://doi.org/10.1111/gcb.v30.1 Bering Sea Central Arctic Ocean DHA EPA ice algae light Melosira arctica MOSAIC expedition nutrients temperature article 2024 ftuhipublicatio https://doi.org/10.1111/gcb.17090 2024-07-15T23:38:41Z Microalgae are the main source of the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), essential for the healthy development of most marine and terrestrial fauna including humans. Inverse correlations of algal EPA and DHA proportions (% of total fatty acids) with temperature have led to suggestions of a warming-induced decline in the global production of these biomolecules and an enhanced importance of high latitude organisms for their provision. The cold Arctic Ocean is a potential hotspot of EPA and DHA production, but consequences of global warming are unknown. Here, we combine a full-seasonal EPA and DHA dataset from the Central Arctic Ocean (CAO), with results from 13 previous field studies and 32 cultured algal strains to examine five potential climate change effects; ice algae loss, community shifts, increase in light, nutrients, and temperature. The algal EPA and DHA proportions were lower in the ice-covered CAO than in warmer peripheral shelf seas, which indicates that the paradigm of an inverse correlation of EPA and DHA proportions with temperature may not hold in the Arctic. We found no systematic differences in the summed EPA and DHA proportions of sea ice versus pelagic algae, and in diatoms versus non-diatoms. Overall, the algal EPA and DHA proportions varied up to four-fold seasonally and 10-fold regionally, pointing to strong light and nutrient limitations in the CAO. Where these limitations ease in a warming Arctic, EPA and DHA proportions are likely to increase alongside increasing primary production, with nutritional benefits for a non-ice-associated food web. Article in Journal/Newspaper Arctic Arctic Ocean Bering Sea Climate change Global warming ice algae Sea ice University of the Highlands and Islands: Research Database of UHI Global Change Biology 30 1 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
Bering Sea Central Arctic Ocean DHA EPA ice algae light Melosira arctica MOSAIC expedition nutrients temperature |
spellingShingle |
Bering Sea Central Arctic Ocean DHA EPA ice algae light Melosira arctica MOSAIC expedition nutrients temperature Schmidt, Katrin Graeve, Martin Hoppe, Clara j. m. Torres‐valdes, Sinhué Welteke, Nahid Whitmore, Laura m. Anhaus, Philipp Atkinson, Angus Belt, Simon t. Brenneis, Tina Campbell, Robert g. Castellani, Giulia Copeman, Louise a. Flores, Hauke Fong, Allison a. Hildebrandt, Nicole Kohlbach, Doreen Nielsen, Jens m. Parrish, Christopher c. Rad‐menéndez, Cecilia Rokitta, Sebastian d. Tippenhauer, Sandra Zhuang, Yanpei Essential omega‐3 fatty acids are depleted in sea ice and pelagic algae of the Central Arctic Ocean |
topic_facet |
Bering Sea Central Arctic Ocean DHA EPA ice algae light Melosira arctica MOSAIC expedition nutrients temperature |
description |
Microalgae are the main source of the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), essential for the healthy development of most marine and terrestrial fauna including humans. Inverse correlations of algal EPA and DHA proportions (% of total fatty acids) with temperature have led to suggestions of a warming-induced decline in the global production of these biomolecules and an enhanced importance of high latitude organisms for their provision. The cold Arctic Ocean is a potential hotspot of EPA and DHA production, but consequences of global warming are unknown. Here, we combine a full-seasonal EPA and DHA dataset from the Central Arctic Ocean (CAO), with results from 13 previous field studies and 32 cultured algal strains to examine five potential climate change effects; ice algae loss, community shifts, increase in light, nutrients, and temperature. The algal EPA and DHA proportions were lower in the ice-covered CAO than in warmer peripheral shelf seas, which indicates that the paradigm of an inverse correlation of EPA and DHA proportions with temperature may not hold in the Arctic. We found no systematic differences in the summed EPA and DHA proportions of sea ice versus pelagic algae, and in diatoms versus non-diatoms. Overall, the algal EPA and DHA proportions varied up to four-fold seasonally and 10-fold regionally, pointing to strong light and nutrient limitations in the CAO. Where these limitations ease in a warming Arctic, EPA and DHA proportions are likely to increase alongside increasing primary production, with nutritional benefits for a non-ice-associated food web. |
format |
Article in Journal/Newspaper |
author |
Schmidt, Katrin Graeve, Martin Hoppe, Clara j. m. Torres‐valdes, Sinhué Welteke, Nahid Whitmore, Laura m. Anhaus, Philipp Atkinson, Angus Belt, Simon t. Brenneis, Tina Campbell, Robert g. Castellani, Giulia Copeman, Louise a. Flores, Hauke Fong, Allison a. Hildebrandt, Nicole Kohlbach, Doreen Nielsen, Jens m. Parrish, Christopher c. Rad‐menéndez, Cecilia Rokitta, Sebastian d. Tippenhauer, Sandra Zhuang, Yanpei |
author_facet |
Schmidt, Katrin Graeve, Martin Hoppe, Clara j. m. Torres‐valdes, Sinhué Welteke, Nahid Whitmore, Laura m. Anhaus, Philipp Atkinson, Angus Belt, Simon t. Brenneis, Tina Campbell, Robert g. Castellani, Giulia Copeman, Louise a. Flores, Hauke Fong, Allison a. Hildebrandt, Nicole Kohlbach, Doreen Nielsen, Jens m. Parrish, Christopher c. Rad‐menéndez, Cecilia Rokitta, Sebastian d. Tippenhauer, Sandra Zhuang, Yanpei |
author_sort |
Schmidt, Katrin |
title |
Essential omega‐3 fatty acids are depleted in sea ice and pelagic algae of the Central Arctic Ocean |
title_short |
Essential omega‐3 fatty acids are depleted in sea ice and pelagic algae of the Central Arctic Ocean |
title_full |
Essential omega‐3 fatty acids are depleted in sea ice and pelagic algae of the Central Arctic Ocean |
title_fullStr |
Essential omega‐3 fatty acids are depleted in sea ice and pelagic algae of the Central Arctic Ocean |
title_full_unstemmed |
Essential omega‐3 fatty acids are depleted in sea ice and pelagic algae of the Central Arctic Ocean |
title_sort |
essential omega‐3 fatty acids are depleted in sea ice and pelagic algae of the central arctic ocean |
publishDate |
2024 |
url |
https://pure.uhi.ac.uk/en/publications/964a584b-0415-4939-ad61-35b5be61d24e https://doi.org/10.1111/gcb.17090 https://pureadmin.uhi.ac.uk/ws/files/49404134/Global_Change_Biology_-_2023_-_Schmidt_-_Essential_omega_3_fatty_acids_are_depleted_in_sea_ice_and_pelagic_algae_of_the.pdf https://onlinelibrary.wiley.com/doi/10.1111/gcb.17090 |
genre |
Arctic Arctic Ocean Bering Sea Climate change Global warming ice algae Sea ice |
genre_facet |
Arctic Arctic Ocean Bering Sea Climate change Global warming ice algae Sea ice |
op_source |
Schmidt , K , Graeve , M , Hoppe , C J M , Torres‐valdes , S , Welteke , N , Whitmore , L M , Anhaus , P , Atkinson , A , Belt , S T , Brenneis , T , Campbell , R G , Castellani , G , Copeman , L A , Flores , H , Fong , A A , Hildebrandt , N , Kohlbach , D , Nielsen , J M , Parrish , C C , Rad‐menéndez , C , Rokitta , S D , Tippenhauer , S & Zhuang , Y 2024 , ' Essential omega‐3 fatty acids are depleted in sea ice and pelagic algae of the Central Arctic Ocean ' , Global Change Biology , vol. 30 , no. 1 , e17090 . https://doi.org/10.1111/gcb.17090 , https://doi.org/10.1111/gcb.v30.1 |
op_relation |
https://pure.uhi.ac.uk/en/publications/964a584b-0415-4939-ad61-35b5be61d24e |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1111/gcb.17090 |
container_title |
Global Change Biology |
container_volume |
30 |
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1810293624246632448 |