Biomarker distributions in surface sediments from the Central Arctic Ocean and adjacent marginal seas
Records of the spatial and temporal variability of Arctic Ocean sea ice are of significance for understanding the causes of the dramatic decrease in Arctic sea-ice cover of recent years. In this context, the newly developed sea-ice proxy IP25, a mono-unsaturated highly branched isoprenoid alkene wit...
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Format: | Dataset |
Language: | English |
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PANGAEA
2015
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.819526 https://doi.org/10.1594/PANGAEA.819526 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.819526 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
2,10,14-Trimethyl-6-enyl-7-(3-methylpent-1-enyl)pentadecene per unit mass total organic carbon 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane 24-ethylcholest-5-en-3beta-ol 24-Methylcholest-5-en-3beta-ol 24-Methylcholesta-5,22E-dien-3beta-ol 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol ARA2B ARA2B-11_BOX-01 ARA2B-15 ARA2B-16a_BOX-01 ARA2B-16B ARA2B-18A ARA2B-18B ARA2B-1A ARA2B-1B ARA2B-2 ARA2B-3A ARA2B-3B ARA2B-8_BOX-01 ARA2B-9_BOX-01 ARA3B ARA3B_01 ARA3B_08MUC-02 ARA3B_09MUC-02 ARA3B_10MUC-02 ARA3B_11MUC-02 ARA3B_12 ARA3B_13MUC-01 ARA3B_14MUC-01 ARA3B_15b ARA3B_16MUC-01 ARA3B_18MUC-01 ARA3B_19MUC-02 ARA3B_26 ARA3B_27 ARA3B_28 ARA3B_29MUC-02 ARA3B_30MUC-01 ARA3B_38aMUC-01 ARA3B_41MUC-03 Araon Arctic Ocean ARK-XI/1 ARK-XIV/1a |
spellingShingle |
2,10,14-Trimethyl-6-enyl-7-(3-methylpent-1-enyl)pentadecene per unit mass total organic carbon 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane 24-ethylcholest-5-en-3beta-ol 24-Methylcholest-5-en-3beta-ol 24-Methylcholesta-5,22E-dien-3beta-ol 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol ARA2B ARA2B-11_BOX-01 ARA2B-15 ARA2B-16a_BOX-01 ARA2B-16B ARA2B-18A ARA2B-18B ARA2B-1A ARA2B-1B ARA2B-2 ARA2B-3A ARA2B-3B ARA2B-8_BOX-01 ARA2B-9_BOX-01 ARA3B ARA3B_01 ARA3B_08MUC-02 ARA3B_09MUC-02 ARA3B_10MUC-02 ARA3B_11MUC-02 ARA3B_12 ARA3B_13MUC-01 ARA3B_14MUC-01 ARA3B_15b ARA3B_16MUC-01 ARA3B_18MUC-01 ARA3B_19MUC-02 ARA3B_26 ARA3B_27 ARA3B_28 ARA3B_29MUC-02 ARA3B_30MUC-01 ARA3B_38aMUC-01 ARA3B_41MUC-03 Araon Arctic Ocean ARK-XI/1 ARK-XIV/1a Xiao, Xiaotong Stein, Ruediger Fahl, Kirsten Müller, Juliane Biomarker distributions in surface sediments from the Central Arctic Ocean and adjacent marginal seas |
topic_facet |
2,10,14-Trimethyl-6-enyl-7-(3-methylpent-1-enyl)pentadecene per unit mass total organic carbon 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane 24-ethylcholest-5-en-3beta-ol 24-Methylcholest-5-en-3beta-ol 24-Methylcholesta-5,22E-dien-3beta-ol 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol ARA2B ARA2B-11_BOX-01 ARA2B-15 ARA2B-16a_BOX-01 ARA2B-16B ARA2B-18A ARA2B-18B ARA2B-1A ARA2B-1B ARA2B-2 ARA2B-3A ARA2B-3B ARA2B-8_BOX-01 ARA2B-9_BOX-01 ARA3B ARA3B_01 ARA3B_08MUC-02 ARA3B_09MUC-02 ARA3B_10MUC-02 ARA3B_11MUC-02 ARA3B_12 ARA3B_13MUC-01 ARA3B_14MUC-01 ARA3B_15b ARA3B_16MUC-01 ARA3B_18MUC-01 ARA3B_19MUC-02 ARA3B_26 ARA3B_27 ARA3B_28 ARA3B_29MUC-02 ARA3B_30MUC-01 ARA3B_38aMUC-01 ARA3B_41MUC-03 Araon Arctic Ocean ARK-XI/1 ARK-XIV/1a |
description |
Records of the spatial and temporal variability of Arctic Ocean sea ice are of significance for understanding the causes of the dramatic decrease in Arctic sea-ice cover of recent years. In this context, the newly developed sea-ice proxy IP25, a mono-unsaturated highly branched isoprenoid alkene with 25 carbon atoms biosynthesized specifically by sea-ice associated diatoms and only found in Arctic and sub-Arctic marine sediments, has been used to reconstruct the recent spatial sea-ice distribution. The phytoplankton biomarkers 24S-brassicasterol and dinosterol were determined alongside IP25 to distinguish ice-free or permanent ice conditions, and to estimate the sea-ice conditions semi-quantitatively by means of the phytoplankton-IP25 index (PIP25). Within our study, for the first time a comprehensive data set of these biomarkers was produced using fresh and deep-frozen surface sediment samples from the Central Arctic Ocean proper (>80°N latitude) characterised by a permanent ice cover today and recently obtained surface sediment samples from the Chukchi Plateau/Basin partly covered by perennial sea ice. In addition, published and new data from other Arctic and sub-Arctic regions were added to generate overview distribution maps of IP25 and phytoplankton biomarkers across major parts of the modern Arctic Ocean. These comprehensive biomarker data indicate perennial sea-ice cover in the Central Arctic, ice-free conditions in the Barents Sea and variable sea-ice situations in other marginal seas. The low but more than zero values of biomarkers in the Central Arctic supported the low in-situ productivity there. The PIP25 index values reflect modern sea-ice conditions better than IP25 alone and show a positive correlation with spring/summer sea ice. When calculating and interpreting PIP25 index as a (semi-quantitative) proxy for reconstructions of present and past Arctic sea-ice conditions from different Arctic/sub-Arctic areas, information of the source of phytoplankton biomarkers and the possible presence of ... |
format |
Dataset |
author |
Xiao, Xiaotong Stein, Ruediger Fahl, Kirsten Müller, Juliane |
author_facet |
Xiao, Xiaotong Stein, Ruediger Fahl, Kirsten Müller, Juliane |
author_sort |
Xiao, Xiaotong |
title |
Biomarker distributions in surface sediments from the Central Arctic Ocean and adjacent marginal seas |
title_short |
Biomarker distributions in surface sediments from the Central Arctic Ocean and adjacent marginal seas |
title_full |
Biomarker distributions in surface sediments from the Central Arctic Ocean and adjacent marginal seas |
title_fullStr |
Biomarker distributions in surface sediments from the Central Arctic Ocean and adjacent marginal seas |
title_full_unstemmed |
Biomarker distributions in surface sediments from the Central Arctic Ocean and adjacent marginal seas |
title_sort |
biomarker distributions in surface sediments from the central arctic ocean and adjacent marginal seas |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.819526 https://doi.org/10.1594/PANGAEA.819526 |
op_coverage |
MEDIAN LATITUDE: 80.489623 * MEDIAN LONGITUDE: 140.295296 * SOUTH-BOUND LATITUDE: 73.631500 * WEST-BOUND LONGITUDE: 1.283333 * NORTH-BOUND LATITUDE: 89.962170 * EAST-BOUND LONGITUDE: -4.016000 * DATE/TIME START: 1995-07-19T00:00:00 * DATE/TIME END: 2012-09-29T13:21:00 * MINIMUM DEPTH, sediment/rock: 0 m * MAXIMUM DEPTH, sediment/rock: 0 m |
long_lat |
ENVELOPE(1.283333,-4.016000,89.962170,73.631500) |
genre |
Arctic Arctic Ocean Barents Sea Chukchi Phytoplankton Sea ice |
genre_facet |
Arctic Arctic Ocean Barents Sea Chukchi Phytoplankton Sea ice |
op_source |
Supplement to: Xiao, Xiaotong; Fahl, Kirsten; Müller, Juliane; Stein, Ruediger (2015): Sea-ice distribution in the modern Arctic Ocean: Biomarker records from trans-Arctic Ocean surface sediments. Geochimica et Cosmochimica Acta, 155, 16-29, https://doi.org/10.1016/j.gca.2015.01.029 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.819526 https://doi.org/10.1594/PANGAEA.819526 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.81952610.1016/j.gca.2015.01.029 |
_version_ |
1810291956977238016 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.819526 2024-09-15T17:50:06+00:00 Biomarker distributions in surface sediments from the Central Arctic Ocean and adjacent marginal seas Xiao, Xiaotong Stein, Ruediger Fahl, Kirsten Müller, Juliane MEDIAN LATITUDE: 80.489623 * MEDIAN LONGITUDE: 140.295296 * SOUTH-BOUND LATITUDE: 73.631500 * WEST-BOUND LONGITUDE: 1.283333 * NORTH-BOUND LATITUDE: 89.962170 * EAST-BOUND LONGITUDE: -4.016000 * DATE/TIME START: 1995-07-19T00:00:00 * DATE/TIME END: 2012-09-29T13:21:00 * MINIMUM DEPTH, sediment/rock: 0 m * MAXIMUM DEPTH, sediment/rock: 0 m 2015 text/tab-separated-values, 856 data points https://doi.pangaea.de/10.1594/PANGAEA.819526 https://doi.org/10.1594/PANGAEA.819526 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.819526 https://doi.org/10.1594/PANGAEA.819526 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Xiao, Xiaotong; Fahl, Kirsten; Müller, Juliane; Stein, Ruediger (2015): Sea-ice distribution in the modern Arctic Ocean: Biomarker records from trans-Arctic Ocean surface sediments. Geochimica et Cosmochimica Acta, 155, 16-29, https://doi.org/10.1016/j.gca.2015.01.029 2,10,14-Trimethyl-6-enyl-7-(3-methylpent-1-enyl)pentadecene per unit mass total organic carbon 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane 24-ethylcholest-5-en-3beta-ol 24-Methylcholest-5-en-3beta-ol 24-Methylcholesta-5,22E-dien-3beta-ol 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol ARA2B ARA2B-11_BOX-01 ARA2B-15 ARA2B-16a_BOX-01 ARA2B-16B ARA2B-18A ARA2B-18B ARA2B-1A ARA2B-1B ARA2B-2 ARA2B-3A ARA2B-3B ARA2B-8_BOX-01 ARA2B-9_BOX-01 ARA3B ARA3B_01 ARA3B_08MUC-02 ARA3B_09MUC-02 ARA3B_10MUC-02 ARA3B_11MUC-02 ARA3B_12 ARA3B_13MUC-01 ARA3B_14MUC-01 ARA3B_15b ARA3B_16MUC-01 ARA3B_18MUC-01 ARA3B_19MUC-02 ARA3B_26 ARA3B_27 ARA3B_28 ARA3B_29MUC-02 ARA3B_30MUC-01 ARA3B_38aMUC-01 ARA3B_41MUC-03 Araon Arctic Ocean ARK-XI/1 ARK-XIV/1a dataset 2015 ftpangaea https://doi.org/10.1594/PANGAEA.81952610.1016/j.gca.2015.01.029 2024-07-24T02:31:32Z Records of the spatial and temporal variability of Arctic Ocean sea ice are of significance for understanding the causes of the dramatic decrease in Arctic sea-ice cover of recent years. In this context, the newly developed sea-ice proxy IP25, a mono-unsaturated highly branched isoprenoid alkene with 25 carbon atoms biosynthesized specifically by sea-ice associated diatoms and only found in Arctic and sub-Arctic marine sediments, has been used to reconstruct the recent spatial sea-ice distribution. The phytoplankton biomarkers 24S-brassicasterol and dinosterol were determined alongside IP25 to distinguish ice-free or permanent ice conditions, and to estimate the sea-ice conditions semi-quantitatively by means of the phytoplankton-IP25 index (PIP25). Within our study, for the first time a comprehensive data set of these biomarkers was produced using fresh and deep-frozen surface sediment samples from the Central Arctic Ocean proper (>80°N latitude) characterised by a permanent ice cover today and recently obtained surface sediment samples from the Chukchi Plateau/Basin partly covered by perennial sea ice. In addition, published and new data from other Arctic and sub-Arctic regions were added to generate overview distribution maps of IP25 and phytoplankton biomarkers across major parts of the modern Arctic Ocean. These comprehensive biomarker data indicate perennial sea-ice cover in the Central Arctic, ice-free conditions in the Barents Sea and variable sea-ice situations in other marginal seas. The low but more than zero values of biomarkers in the Central Arctic supported the low in-situ productivity there. The PIP25 index values reflect modern sea-ice conditions better than IP25 alone and show a positive correlation with spring/summer sea ice. When calculating and interpreting PIP25 index as a (semi-quantitative) proxy for reconstructions of present and past Arctic sea-ice conditions from different Arctic/sub-Arctic areas, information of the source of phytoplankton biomarkers and the possible presence of ... Dataset Arctic Arctic Ocean Barents Sea Chukchi Phytoplankton Sea ice PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(1.283333,-4.016000,89.962170,73.631500) |