Dissolved organic carbon in sediments of the central Arctic Ocean collected during POLARSTERN cruise ARK-XXVII/3 from August-September 2012
Marine organic matter (OM) sinks from surface waters to the seafloor via the biological pump. Benthic communities, which use this sedimented OM as energy and carbon source, produce dissolved organic matter (DOM) in the process of remineralization, enriching the sediment porewater with fresh DOM comp...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.849056 2023-05-15T14:25:17+02:00 Dissolved organic carbon in sediments of the central Arctic Ocean collected during POLARSTERN cruise ARK-XXVII/3 from August-September 2012 Rossel, Pamela E Bienhold, Christina Boetius, Antje Dittmar, Thorsten MEDIAN LATITUDE: 84.803340 * MEDIAN LONGITUDE: 82.531193 * SOUTH-BOUND LATITUDE: 82.645270 * WEST-BOUND LONGITUDE: 17.804700 * NORTH-BOUND LATITUDE: 88.820330 * EAST-BOUND LONGITUDE: 129.912670 * DATE/TIME START: 2012-08-14T06:57:00 * DATE/TIME END: 2012-09-29T13:21:00 2016-05-08 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.849056 https://doi.org/10.1594/PANGAEA.849056 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.849056 https://doi.org/10.1594/PANGAEA.849056 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Rossel, Pamela E; Bienhold, Christina; Boetius, Antje; Dittmar, Thorsten (2016): Dissolved organic matter in pore water of Arctic Ocean sediments: Environmental influence on molecular composition. Organic Geochemistry, 97, 41-52, https://doi.org/10.1016/j.orggeochem.2016.04.003 ABYSS Assessment of bacterial life and matter cycling in deep-sea surface sediments Dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.849056 https://doi.org/10.1016/j.orggeochem.2016.04.003 2023-01-20T07:33:30Z Marine organic matter (OM) sinks from surface waters to the seafloor via the biological pump. Benthic communities, which use this sedimented OM as energy and carbon source, produce dissolved organic matter (DOM) in the process of remineralization, enriching the sediment porewater with fresh DOM compounds. We hypothesized that in the oligotrophic deep Arctic basin the molecular signal of freshly deposited primary produced OM is restricted to the surface sediment pore waters which should differ from bottom water and deeper sediment pore water in DOM composition. This study focused on: 1) the molecular composition of the DOM in sediment pore waters of the deep Eurasian Arctic basins, 2) whether the signal of marine vs. terrigenous DOM is represented by different compounds preserved in the sediment pore waters and 3) whether there is any relation between Arctic Ocean ice cover and DOM composition. Molecular data, obtained via 15 Tesla Fourier transform ion cyclotron resonance mass spectrometer, were correlated with environmental parameters by partial least square analysis. The fresher marine detrital OM signal from surface waters was limited to pore waters from < 5 cm sediment depth. The productive ice margin stations showed higher abundances of peptides, unsaturated aliphatics and saturated fatty acids formulae, indicative of fresh OM/pigments deposition, compared to northernmost stations which had stronger aromatic signals. This study contributes to the understanding of the coupling between the Arctic Ocean productivity and its depositional regime, and how it will be altered in response to sea ice retreat and increasing river runoff. Dataset Arctic Arctic Basin Arctic Arctic Ocean Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean ENVELOPE(17.804700,129.912670,88.820330,82.645270) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ABYSS Assessment of bacterial life and matter cycling in deep-sea surface sediments |
spellingShingle |
ABYSS Assessment of bacterial life and matter cycling in deep-sea surface sediments Rossel, Pamela E Bienhold, Christina Boetius, Antje Dittmar, Thorsten Dissolved organic carbon in sediments of the central Arctic Ocean collected during POLARSTERN cruise ARK-XXVII/3 from August-September 2012 |
topic_facet |
ABYSS Assessment of bacterial life and matter cycling in deep-sea surface sediments |
description |
Marine organic matter (OM) sinks from surface waters to the seafloor via the biological pump. Benthic communities, which use this sedimented OM as energy and carbon source, produce dissolved organic matter (DOM) in the process of remineralization, enriching the sediment porewater with fresh DOM compounds. We hypothesized that in the oligotrophic deep Arctic basin the molecular signal of freshly deposited primary produced OM is restricted to the surface sediment pore waters which should differ from bottom water and deeper sediment pore water in DOM composition. This study focused on: 1) the molecular composition of the DOM in sediment pore waters of the deep Eurasian Arctic basins, 2) whether the signal of marine vs. terrigenous DOM is represented by different compounds preserved in the sediment pore waters and 3) whether there is any relation between Arctic Ocean ice cover and DOM composition. Molecular data, obtained via 15 Tesla Fourier transform ion cyclotron resonance mass spectrometer, were correlated with environmental parameters by partial least square analysis. The fresher marine detrital OM signal from surface waters was limited to pore waters from < 5 cm sediment depth. The productive ice margin stations showed higher abundances of peptides, unsaturated aliphatics and saturated fatty acids formulae, indicative of fresh OM/pigments deposition, compared to northernmost stations which had stronger aromatic signals. This study contributes to the understanding of the coupling between the Arctic Ocean productivity and its depositional regime, and how it will be altered in response to sea ice retreat and increasing river runoff. |
format |
Dataset |
author |
Rossel, Pamela E Bienhold, Christina Boetius, Antje Dittmar, Thorsten |
author_facet |
Rossel, Pamela E Bienhold, Christina Boetius, Antje Dittmar, Thorsten |
author_sort |
Rossel, Pamela E |
title |
Dissolved organic carbon in sediments of the central Arctic Ocean collected during POLARSTERN cruise ARK-XXVII/3 from August-September 2012 |
title_short |
Dissolved organic carbon in sediments of the central Arctic Ocean collected during POLARSTERN cruise ARK-XXVII/3 from August-September 2012 |
title_full |
Dissolved organic carbon in sediments of the central Arctic Ocean collected during POLARSTERN cruise ARK-XXVII/3 from August-September 2012 |
title_fullStr |
Dissolved organic carbon in sediments of the central Arctic Ocean collected during POLARSTERN cruise ARK-XXVII/3 from August-September 2012 |
title_full_unstemmed |
Dissolved organic carbon in sediments of the central Arctic Ocean collected during POLARSTERN cruise ARK-XXVII/3 from August-September 2012 |
title_sort |
dissolved organic carbon in sediments of the central arctic ocean collected during polarstern cruise ark-xxvii/3 from august-september 2012 |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.849056 https://doi.org/10.1594/PANGAEA.849056 |
op_coverage |
MEDIAN LATITUDE: 84.803340 * MEDIAN LONGITUDE: 82.531193 * SOUTH-BOUND LATITUDE: 82.645270 * WEST-BOUND LONGITUDE: 17.804700 * NORTH-BOUND LATITUDE: 88.820330 * EAST-BOUND LONGITUDE: 129.912670 * DATE/TIME START: 2012-08-14T06:57:00 * DATE/TIME END: 2012-09-29T13:21:00 |
long_lat |
ENVELOPE(17.804700,129.912670,88.820330,82.645270) |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Basin Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Basin Arctic Arctic Ocean Sea ice |
op_source |
Supplement to: Rossel, Pamela E; Bienhold, Christina; Boetius, Antje; Dittmar, Thorsten (2016): Dissolved organic matter in pore water of Arctic Ocean sediments: Environmental influence on molecular composition. Organic Geochemistry, 97, 41-52, https://doi.org/10.1016/j.orggeochem.2016.04.003 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.849056 https://doi.org/10.1594/PANGAEA.849056 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.849056 https://doi.org/10.1016/j.orggeochem.2016.04.003 |
_version_ |
1766297701732843520 |