Biomarker Distributions in (Sub)‐Arctic Surface Sediments and Their Potential for Sea Ice Reconstructions
Abstract To evaluate the present sea ice changes in a longer‐term perspective, the knowledge of sea ice variability on preindustrial and geological time scales is essential. For the interpretation of proxy reconstructions it is necessary to understand the recent signals of different sea ice proxies...
Published in: | Geochemistry, Geophysics, Geosystems |
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ftdoajarticles:oai:doaj.org/article:8b3b63323bbd4040a3329868a7aa5503 2023-12-03T10:16:01+01:00 Biomarker Distributions in (Sub)‐Arctic Surface Sediments and Their Potential for Sea Ice Reconstructions Henriette M. Kolling Ruediger Stein Kirsten Fahl Henrik Sadatzki Anne deVernal Xiaotong Xiao 2020-10-01T00:00:00Z https://doi.org/10.1029/2019GC008629 https://doaj.org/article/8b3b63323bbd4040a3329868a7aa5503 EN eng Wiley https://doi.org/10.1029/2019GC008629 https://doaj.org/toc/1525-2027 1525-2027 doi:10.1029/2019GC008629 https://doaj.org/article/8b3b63323bbd4040a3329868a7aa5503 Geochemistry, Geophysics, Geosystems, Vol 21, Iss 10, Pp n/a-n/a (2020) biomarker IP25 PIP25 sea ice Baffin Bay Fram Strait Geophysics. Cosmic physics QC801-809 Geology QE1-996.5 article 2020 ftdoajarticles https://doi.org/10.1029/2019GC008629 2023-11-05T01:36:02Z Abstract To evaluate the present sea ice changes in a longer‐term perspective, the knowledge of sea ice variability on preindustrial and geological time scales is essential. For the interpretation of proxy reconstructions it is necessary to understand the recent signals of different sea ice proxies from various regions. We present 260 new sediment surface samples collected in the (sub‐)Arctic Oceans that were analyzed for specific sea ice (IP25) and open‐water phytoplankton biomarkers (brassicasterol, dinosterol, and highly branched isoprenoid [HBI] III). This new biomarker data set was combined with 615 previously published biomarker surface samples into a pan‐Arctic database. The resulting pan‐Arctic biomarker and sea ice index (PIP25) database shows a spatial distribution correlating well with the diverse modern sea ice concentrations. We find correlations of PBIP25, PDIP25, and PIIIIP25 with spring and autumn sea ice concentrations. Similar correlations with modern sea ice concentrations are observed in Baffin Bay. However, the correlations of the PIP25 indices with modern sea ice concentrations differ in Fram Strait from those of the (sub‐)Arctic data set, which is likely caused by region‐specific differences in sea ice variability, nutrient availability, and other environmental conditions. The extended (sea ice) biomarker database strengthens the validity of biomarker sea ice reconstructions in different Arctic regions and shows how different sea ice proxies combined may resolve specific seasonal sea ice conditions. Article in Journal/Newspaper Arctic Baffin Bay Baffin Bay Baffin Fram Strait Phytoplankton Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Baffin Bay Geochemistry, Geophysics, Geosystems 21 10 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
biomarker IP25 PIP25 sea ice Baffin Bay Fram Strait Geophysics. Cosmic physics QC801-809 Geology QE1-996.5 |
spellingShingle |
biomarker IP25 PIP25 sea ice Baffin Bay Fram Strait Geophysics. Cosmic physics QC801-809 Geology QE1-996.5 Henriette M. Kolling Ruediger Stein Kirsten Fahl Henrik Sadatzki Anne deVernal Xiaotong Xiao Biomarker Distributions in (Sub)‐Arctic Surface Sediments and Their Potential for Sea Ice Reconstructions |
topic_facet |
biomarker IP25 PIP25 sea ice Baffin Bay Fram Strait Geophysics. Cosmic physics QC801-809 Geology QE1-996.5 |
description |
Abstract To evaluate the present sea ice changes in a longer‐term perspective, the knowledge of sea ice variability on preindustrial and geological time scales is essential. For the interpretation of proxy reconstructions it is necessary to understand the recent signals of different sea ice proxies from various regions. We present 260 new sediment surface samples collected in the (sub‐)Arctic Oceans that were analyzed for specific sea ice (IP25) and open‐water phytoplankton biomarkers (brassicasterol, dinosterol, and highly branched isoprenoid [HBI] III). This new biomarker data set was combined with 615 previously published biomarker surface samples into a pan‐Arctic database. The resulting pan‐Arctic biomarker and sea ice index (PIP25) database shows a spatial distribution correlating well with the diverse modern sea ice concentrations. We find correlations of PBIP25, PDIP25, and PIIIIP25 with spring and autumn sea ice concentrations. Similar correlations with modern sea ice concentrations are observed in Baffin Bay. However, the correlations of the PIP25 indices with modern sea ice concentrations differ in Fram Strait from those of the (sub‐)Arctic data set, which is likely caused by region‐specific differences in sea ice variability, nutrient availability, and other environmental conditions. The extended (sea ice) biomarker database strengthens the validity of biomarker sea ice reconstructions in different Arctic regions and shows how different sea ice proxies combined may resolve specific seasonal sea ice conditions. |
format |
Article in Journal/Newspaper |
author |
Henriette M. Kolling Ruediger Stein Kirsten Fahl Henrik Sadatzki Anne deVernal Xiaotong Xiao |
author_facet |
Henriette M. Kolling Ruediger Stein Kirsten Fahl Henrik Sadatzki Anne deVernal Xiaotong Xiao |
author_sort |
Henriette M. Kolling |
title |
Biomarker Distributions in (Sub)‐Arctic Surface Sediments and Their Potential for Sea Ice Reconstructions |
title_short |
Biomarker Distributions in (Sub)‐Arctic Surface Sediments and Their Potential for Sea Ice Reconstructions |
title_full |
Biomarker Distributions in (Sub)‐Arctic Surface Sediments and Their Potential for Sea Ice Reconstructions |
title_fullStr |
Biomarker Distributions in (Sub)‐Arctic Surface Sediments and Their Potential for Sea Ice Reconstructions |
title_full_unstemmed |
Biomarker Distributions in (Sub)‐Arctic Surface Sediments and Their Potential for Sea Ice Reconstructions |
title_sort |
biomarker distributions in (sub)‐arctic surface sediments and their potential for sea ice reconstructions |
publisher |
Wiley |
publishDate |
2020 |
url |
https://doi.org/10.1029/2019GC008629 https://doaj.org/article/8b3b63323bbd4040a3329868a7aa5503 |
geographic |
Arctic Baffin Bay |
geographic_facet |
Arctic Baffin Bay |
genre |
Arctic Baffin Bay Baffin Bay Baffin Fram Strait Phytoplankton Sea ice |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Fram Strait Phytoplankton Sea ice |
op_source |
Geochemistry, Geophysics, Geosystems, Vol 21, Iss 10, Pp n/a-n/a (2020) |
op_relation |
https://doi.org/10.1029/2019GC008629 https://doaj.org/toc/1525-2027 1525-2027 doi:10.1029/2019GC008629 https://doaj.org/article/8b3b63323bbd4040a3329868a7aa5503 |
op_doi |
https://doi.org/10.1029/2019GC008629 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
21 |
container_issue |
10 |
_version_ |
1784262908696330240 |