Supplementary Information 1 from Atlantic walrus signal latitudinal differences in the long-term decline of sea ice-derived carbon to benthic fauna in the Canadian Arctic
Climate change is altering the biogeochemical and physical characteristics of the Arctic marine environment, which impacts sea ice algal and phytoplankton bloom dynamics and the vertical transport of these carbon sources to benthic communities. Little is known about whether the contribution of sea i...
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ftroysocietyfig:oai:figshare.com:article/13336644 2023-05-15T14:43:16+02:00 Supplementary Information 1 from Atlantic walrus signal latitudinal differences in the long-term decline of sea ice-derived carbon to benthic fauna in the Canadian Arctic David J. Yurkowski Thomas A. Brown Paul J. Blanchfield Steven H. Ferguson 2020-12-05T06:21:05Z https://doi.org/10.6084/m9.figshare.13336644.v1 https://figshare.com/articles/journal_contribution/Supplementary_Information_1_from_Atlantic_walrus_signal_latitudinal_differences_in_the_long-term_decline_of_sea_ice-derived_carbon_to_benthic_fauna_in_the_Canadian_Arctic/13336644 unknown doi:10.6084/m9.figshare.13336644.v1 https://figshare.com/articles/journal_contribution/Supplementary_Information_1_from_Atlantic_walrus_signal_latitudinal_differences_in_the_long-term_decline_of_sea_ice-derived_carbon_to_benthic_fauna_in_the_Canadian_Arctic/13336644 CC BY 4.0 CC-BY Environmental Science carbon source compound-specific stable isotope analysis of amino acids lipid biomarker marine mammal phytoplankton sea ice algae Text Journal contribution 2020 ftroysocietyfig https://doi.org/10.6084/m9.figshare.13336644.v1 2022-01-01T19:16:44Z Climate change is altering the biogeochemical and physical characteristics of the Arctic marine environment, which impacts sea ice algal and phytoplankton bloom dynamics and the vertical transport of these carbon sources to benthic communities. Little is known about whether the contribution of sea ice-derived carbon to benthic fauna and nitrogen cycling has changed over multiple decades in concert with receding sea ice. We combined compound-specific stable isotope analysis of amino acids with highly branched isoprenoid diatom lipid biomarkers using archived (1982–2016) tissue of benthivorous Atlantic walrus to examine temporal trends of sea ice-derived carbon, nitrogen isotope baseline and trophic position of Atlantic walrus at high- and mid-latitudes in the Canadian Arctic. Associated with an 18% sea ice decline in the mid-Arctic, sea ice-derived carbon contribution to Atlantic walrus decreased by 75% suggesting a strong decoupling of sea ice-benthic habitats. By contrast, a nearly exclusive amount of sea ice-derived carbon was maintained in high-Arctic Atlantic walrus (98% in 1996 and 89% in 2006) despite a similar percentage in sea ice reduction. Nitrogen isotope baseline or the trophic position of Atlantic walrus did not change over time at either location. These findings indicate latitudinal differences in the restructuring of carbon energy sources used by Atlantic walrus and their benthic prey and in turn, a change in Arctic marine ecosystem functioning between sea ice-pelagic-benthic habitats. Other Non-Article Part of Journal/Newspaper Arctic Climate change ice algae Phytoplankton Sea ice walrus* The Royal Society: Figshare Arctic |
institution |
Open Polar |
collection |
The Royal Society: Figshare |
op_collection_id |
ftroysocietyfig |
language |
unknown |
topic |
Environmental Science carbon source compound-specific stable isotope analysis of amino acids lipid biomarker marine mammal phytoplankton sea ice algae |
spellingShingle |
Environmental Science carbon source compound-specific stable isotope analysis of amino acids lipid biomarker marine mammal phytoplankton sea ice algae David J. Yurkowski Thomas A. Brown Paul J. Blanchfield Steven H. Ferguson Supplementary Information 1 from Atlantic walrus signal latitudinal differences in the long-term decline of sea ice-derived carbon to benthic fauna in the Canadian Arctic |
topic_facet |
Environmental Science carbon source compound-specific stable isotope analysis of amino acids lipid biomarker marine mammal phytoplankton sea ice algae |
description |
Climate change is altering the biogeochemical and physical characteristics of the Arctic marine environment, which impacts sea ice algal and phytoplankton bloom dynamics and the vertical transport of these carbon sources to benthic communities. Little is known about whether the contribution of sea ice-derived carbon to benthic fauna and nitrogen cycling has changed over multiple decades in concert with receding sea ice. We combined compound-specific stable isotope analysis of amino acids with highly branched isoprenoid diatom lipid biomarkers using archived (1982–2016) tissue of benthivorous Atlantic walrus to examine temporal trends of sea ice-derived carbon, nitrogen isotope baseline and trophic position of Atlantic walrus at high- and mid-latitudes in the Canadian Arctic. Associated with an 18% sea ice decline in the mid-Arctic, sea ice-derived carbon contribution to Atlantic walrus decreased by 75% suggesting a strong decoupling of sea ice-benthic habitats. By contrast, a nearly exclusive amount of sea ice-derived carbon was maintained in high-Arctic Atlantic walrus (98% in 1996 and 89% in 2006) despite a similar percentage in sea ice reduction. Nitrogen isotope baseline or the trophic position of Atlantic walrus did not change over time at either location. These findings indicate latitudinal differences in the restructuring of carbon energy sources used by Atlantic walrus and their benthic prey and in turn, a change in Arctic marine ecosystem functioning between sea ice-pelagic-benthic habitats. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
David J. Yurkowski Thomas A. Brown Paul J. Blanchfield Steven H. Ferguson |
author_facet |
David J. Yurkowski Thomas A. Brown Paul J. Blanchfield Steven H. Ferguson |
author_sort |
David J. Yurkowski |
title |
Supplementary Information 1 from Atlantic walrus signal latitudinal differences in the long-term decline of sea ice-derived carbon to benthic fauna in the Canadian Arctic |
title_short |
Supplementary Information 1 from Atlantic walrus signal latitudinal differences in the long-term decline of sea ice-derived carbon to benthic fauna in the Canadian Arctic |
title_full |
Supplementary Information 1 from Atlantic walrus signal latitudinal differences in the long-term decline of sea ice-derived carbon to benthic fauna in the Canadian Arctic |
title_fullStr |
Supplementary Information 1 from Atlantic walrus signal latitudinal differences in the long-term decline of sea ice-derived carbon to benthic fauna in the Canadian Arctic |
title_full_unstemmed |
Supplementary Information 1 from Atlantic walrus signal latitudinal differences in the long-term decline of sea ice-derived carbon to benthic fauna in the Canadian Arctic |
title_sort |
supplementary information 1 from atlantic walrus signal latitudinal differences in the long-term decline of sea ice-derived carbon to benthic fauna in the canadian arctic |
publishDate |
2020 |
url |
https://doi.org/10.6084/m9.figshare.13336644.v1 https://figshare.com/articles/journal_contribution/Supplementary_Information_1_from_Atlantic_walrus_signal_latitudinal_differences_in_the_long-term_decline_of_sea_ice-derived_carbon_to_benthic_fauna_in_the_Canadian_Arctic/13336644 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change ice algae Phytoplankton Sea ice walrus* |
genre_facet |
Arctic Climate change ice algae Phytoplankton Sea ice walrus* |
op_relation |
doi:10.6084/m9.figshare.13336644.v1 https://figshare.com/articles/journal_contribution/Supplementary_Information_1_from_Atlantic_walrus_signal_latitudinal_differences_in_the_long-term_decline_of_sea_ice-derived_carbon_to_benthic_fauna_in_the_Canadian_Arctic/13336644 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.13336644.v1 |
_version_ |
1766314957754859520 |