Source-specific biomarkers as proxies for Arctic and Antarctic sea ice
Over the last decade or so, certain source-specific C-25 highly branched isoprenoid (HBI) lipid biomarkers have emerged as useful proxies for Arctic and Antarctic sea ice. Thus, IP25 (Ice proxy with 25 carbon atoms) and IPSO25 (Ice proxy for the Southern Ocean with 25 carbon atoms) represent binary...
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ftarchimer:oai:archimer.ifremer.fr:60782 2023-05-15T14:02:48+02:00 Source-specific biomarkers as proxies for Arctic and Antarctic sea ice Belt, Simon T. 2018-11 application/pdf https://archimer.ifremer.fr/doc/00496/60782/101199.pdf https://doi.org/10.1016/j.orggeochem.2018.10.002 https://archimer.ifremer.fr/doc/00496/60782/ eng eng Pergamon-elsevier Science Ltd https://archimer.ifremer.fr/doc/00496/60782/101199.pdf doi:10.1016/j.orggeochem.2018.10.002 https://archimer.ifremer.fr/doc/00496/60782/ info:eu-repo/semantics/openAccess restricted use Organic Geochemistry (0146-6380) (Pergamon-elsevier Science Ltd), 2018-11 , Vol. 125 , P. 277-298 Biomarkers HBIs IP25 IPSO25 Sea ice Proxies text Publication info:eu-repo/semantics/article 2018 ftarchimer https://doi.org/10.1016/j.orggeochem.2018.10.002 2023-03-29T01:52:59Z Over the last decade or so, certain source-specific C-25 highly branched isoprenoid (HBI) lipid biomarkers have emerged as useful proxies for Arctic and Antarctic sea ice. Thus, IP25 (Ice proxy with 25 carbon atoms) and IPSO25 (Ice proxy for the Southern Ocean with 25 carbon atoms) represent binary measures of past seasonal sea ice in the Arctic and Antarctic, respectively. A further tri-unsaturated HBI (generally referred to as HBI III) appears to provide proxy evidence for the region of open water found adjacent to sea ice (i.e. the marginal ice zone (MIZ)) in both polar regions. This review provides an update on current knowledge pertaining to each proxy. The first section focuses on describing those studies that have aimed to establish the underlying features of each proxy, including source identification and spatial distribution characteristics. The second section presents some important analytical considerations pertinent to the accurate identification and quantification of HBI biomarkers. The third section describes how each HBI proxy is normally interpreted within the sedimentary record for palaeo sea ice reconstruction purposes. This includes the interpretation of individual and combined biomarker profiles such as the PIP25 index and multivariate decision tree models. A summary of all previous palaeo sea ice reconstructions based on HBIs is also given, which includes examples that clarify or reinforce our understanding of the individual or combined biomarker signatures. Some knowledge gaps and areas for future research are also briefly described. Article in Journal/Newspaper Antarc* Antarctic Arctic Sea ice Southern Ocean Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Antarctic Arctic Southern Ocean Organic Geochemistry 125 277 298 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Biomarkers HBIs IP25 IPSO25 Sea ice Proxies |
spellingShingle |
Biomarkers HBIs IP25 IPSO25 Sea ice Proxies Belt, Simon T. Source-specific biomarkers as proxies for Arctic and Antarctic sea ice |
topic_facet |
Biomarkers HBIs IP25 IPSO25 Sea ice Proxies |
description |
Over the last decade or so, certain source-specific C-25 highly branched isoprenoid (HBI) lipid biomarkers have emerged as useful proxies for Arctic and Antarctic sea ice. Thus, IP25 (Ice proxy with 25 carbon atoms) and IPSO25 (Ice proxy for the Southern Ocean with 25 carbon atoms) represent binary measures of past seasonal sea ice in the Arctic and Antarctic, respectively. A further tri-unsaturated HBI (generally referred to as HBI III) appears to provide proxy evidence for the region of open water found adjacent to sea ice (i.e. the marginal ice zone (MIZ)) in both polar regions. This review provides an update on current knowledge pertaining to each proxy. The first section focuses on describing those studies that have aimed to establish the underlying features of each proxy, including source identification and spatial distribution characteristics. The second section presents some important analytical considerations pertinent to the accurate identification and quantification of HBI biomarkers. The third section describes how each HBI proxy is normally interpreted within the sedimentary record for palaeo sea ice reconstruction purposes. This includes the interpretation of individual and combined biomarker profiles such as the PIP25 index and multivariate decision tree models. A summary of all previous palaeo sea ice reconstructions based on HBIs is also given, which includes examples that clarify or reinforce our understanding of the individual or combined biomarker signatures. Some knowledge gaps and areas for future research are also briefly described. |
format |
Article in Journal/Newspaper |
author |
Belt, Simon T. |
author_facet |
Belt, Simon T. |
author_sort |
Belt, Simon T. |
title |
Source-specific biomarkers as proxies for Arctic and Antarctic sea ice |
title_short |
Source-specific biomarkers as proxies for Arctic and Antarctic sea ice |
title_full |
Source-specific biomarkers as proxies for Arctic and Antarctic sea ice |
title_fullStr |
Source-specific biomarkers as proxies for Arctic and Antarctic sea ice |
title_full_unstemmed |
Source-specific biomarkers as proxies for Arctic and Antarctic sea ice |
title_sort |
source-specific biomarkers as proxies for arctic and antarctic sea ice |
publisher |
Pergamon-elsevier Science Ltd |
publishDate |
2018 |
url |
https://archimer.ifremer.fr/doc/00496/60782/101199.pdf https://doi.org/10.1016/j.orggeochem.2018.10.002 https://archimer.ifremer.fr/doc/00496/60782/ |
geographic |
Antarctic Arctic Southern Ocean |
geographic_facet |
Antarctic Arctic Southern Ocean |
genre |
Antarc* Antarctic Arctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Arctic Sea ice Southern Ocean |
op_source |
Organic Geochemistry (0146-6380) (Pergamon-elsevier Science Ltd), 2018-11 , Vol. 125 , P. 277-298 |
op_relation |
https://archimer.ifremer.fr/doc/00496/60782/101199.pdf doi:10.1016/j.orggeochem.2018.10.002 https://archimer.ifremer.fr/doc/00496/60782/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.orggeochem.2018.10.002 |
container_title |
Organic Geochemistry |
container_volume |
125 |
container_start_page |
277 |
op_container_end_page |
298 |
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1766273205484388352 |