Spatial and temporal variability of ice algal trophic markers—with recommendations about their application
Assessing the relative importance of sea ice algal-based production is often vital for studies about climate change impacts on Arctic marine ecosystems. Several types of lipid biomarkers and stable isotope ratios are widely used for tracing sea ic-associated (sympagic) vs. pelagic particulate organi...
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Language: | English |
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Online Access: | https://hdl.handle.net/11250/2689549 https://doi.org/10.3390/jmse8090676 |
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ftimr:oai:imr.brage.unit.no:11250/2689549 2023-05-15T14:57:45+02:00 Spatial and temporal variability of ice algal trophic markers—with recommendations about their application Leu, Eva Brown, Thomas A Graeve, Martin Wiktor, Jozef Hoppe, Clara J.M. Chierici, Melissa Fransson, Agneta Verbiest, Sander Kvernvik, Ane Cecilie Greenacre, Michael 2020 application/pdf https://hdl.handle.net/11250/2689549 https://doi.org/10.3390/jmse8090676 eng eng Journal of Marine Science and Engineering. 2020, 8:676 (9), 1-24. urn:issn:2077-1312 https://hdl.handle.net/11250/2689549 https://doi.org/10.3390/jmse8090676 cristin:1847976 1-24 8:676 Journal of Marine Science and Engineering 9 Peer reviewed Journal article 2020 ftimr https://doi.org/10.3390/jmse8090676 2021-09-23T20:16:15Z Assessing the relative importance of sea ice algal-based production is often vital for studies about climate change impacts on Arctic marine ecosystems. Several types of lipid biomarkers and stable isotope ratios are widely used for tracing sea ic-associated (sympagic) vs. pelagic particulate organic matter (POM) in marine food webs. However, there has been limited understanding about the plasticity of these compounds in space and time, which constrains the robustness of some of those approaches. Furthermore, some of the markers are compromised by not being unambiguously specific for sea ice algae, whereas others might only be produced by a small sub-group of species. We analyzed fatty acids, highly branched isoprenoids (HBIs), stable isotope ratios of particulate organic carbon (POC) (δ13C), as well as δ13C of selected fatty acid markers during an Arctic sea ice algal bloom, focusing on spatial and temporal variability. We found remarkable differences between these approaches and show that inferences about bloom characteristics might even be contradictory between markers. The impact of environmental factors as causes of this considerable variability is highlighted and explained. We emphasize that awareness and, in some cases, caution is required when using lipid and stable isotope markers as tracers in food web studies and offer recommendations for the proper application of these valuable approaches. publishedVersion Article in Journal/Newspaper Arctic Climate change ice algae Sea ice Institute for Marine Research: Brage IMR Arctic Journal of Marine Science and Engineering 8 9 676 |
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Open Polar |
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Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
Assessing the relative importance of sea ice algal-based production is often vital for studies about climate change impacts on Arctic marine ecosystems. Several types of lipid biomarkers and stable isotope ratios are widely used for tracing sea ic-associated (sympagic) vs. pelagic particulate organic matter (POM) in marine food webs. However, there has been limited understanding about the plasticity of these compounds in space and time, which constrains the robustness of some of those approaches. Furthermore, some of the markers are compromised by not being unambiguously specific for sea ice algae, whereas others might only be produced by a small sub-group of species. We analyzed fatty acids, highly branched isoprenoids (HBIs), stable isotope ratios of particulate organic carbon (POC) (δ13C), as well as δ13C of selected fatty acid markers during an Arctic sea ice algal bloom, focusing on spatial and temporal variability. We found remarkable differences between these approaches and show that inferences about bloom characteristics might even be contradictory between markers. The impact of environmental factors as causes of this considerable variability is highlighted and explained. We emphasize that awareness and, in some cases, caution is required when using lipid and stable isotope markers as tracers in food web studies and offer recommendations for the proper application of these valuable approaches. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Leu, Eva Brown, Thomas A Graeve, Martin Wiktor, Jozef Hoppe, Clara J.M. Chierici, Melissa Fransson, Agneta Verbiest, Sander Kvernvik, Ane Cecilie Greenacre, Michael |
spellingShingle |
Leu, Eva Brown, Thomas A Graeve, Martin Wiktor, Jozef Hoppe, Clara J.M. Chierici, Melissa Fransson, Agneta Verbiest, Sander Kvernvik, Ane Cecilie Greenacre, Michael Spatial and temporal variability of ice algal trophic markers—with recommendations about their application |
author_facet |
Leu, Eva Brown, Thomas A Graeve, Martin Wiktor, Jozef Hoppe, Clara J.M. Chierici, Melissa Fransson, Agneta Verbiest, Sander Kvernvik, Ane Cecilie Greenacre, Michael |
author_sort |
Leu, Eva |
title |
Spatial and temporal variability of ice algal trophic markers—with recommendations about their application |
title_short |
Spatial and temporal variability of ice algal trophic markers—with recommendations about their application |
title_full |
Spatial and temporal variability of ice algal trophic markers—with recommendations about their application |
title_fullStr |
Spatial and temporal variability of ice algal trophic markers—with recommendations about their application |
title_full_unstemmed |
Spatial and temporal variability of ice algal trophic markers—with recommendations about their application |
title_sort |
spatial and temporal variability of ice algal trophic markers—with recommendations about their application |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2689549 https://doi.org/10.3390/jmse8090676 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change ice algae Sea ice |
genre_facet |
Arctic Climate change ice algae Sea ice |
op_source |
1-24 8:676 Journal of Marine Science and Engineering 9 |
op_relation |
Journal of Marine Science and Engineering. 2020, 8:676 (9), 1-24. urn:issn:2077-1312 https://hdl.handle.net/11250/2689549 https://doi.org/10.3390/jmse8090676 cristin:1847976 |
op_doi |
https://doi.org/10.3390/jmse8090676 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
8 |
container_issue |
9 |
container_start_page |
676 |
_version_ |
1766329879241949184 |