Large ancient organic matter contributions to Arctic marine sediments (Svalbard)
Soils, fine-grained ice-rafted detritus (IRD), coals, and marine surface sediments in the Arctic realm (Svalbard) were collected in 2007 and 2008 to characterize organic matter (OM) sources in Arctic marine sediments. Bulk geochemical (C : N ratio and stable carbon isotopic composition) parameters s...
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ftnioz:oai:imis.nioz.nl:231290 2023-05-15T14:47:06+02:00 Large ancient organic matter contributions to Arctic marine sediments (Svalbard) Kim, J.-H. Peterse, F. Willmott, V. Klitgaard Kristensen, D. Baas, M. Schouten, S. Sinninghe Damsté, J.S. 2011 application/pdf https://www.vliz.be/imisdocs/publications/53/255853.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000294603400023 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.4319/lo.2011.56.4.1463 https://www.vliz.be/imisdocs/publications/53/255853.pdf info:eu-repo/semantics/openAccess %3Ci%3ELimnol.+Oceanogr.+56%284%29%3C%2Fi%3E%3A+1463-1474.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.4319%2Flo.2011.56.4.1463%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.4319%2Flo.2011.56.4.1463%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2011 ftnioz https://doi.org/10.4319/lo.2011.56.4.1463 2022-05-01T13:58:17Z Soils, fine-grained ice-rafted detritus (IRD), coals, and marine surface sediments in the Arctic realm (Svalbard) were collected in 2007 and 2008 to characterize organic matter (OM) sources in Arctic marine sediments. Bulk geochemical (C : N ratio and stable carbon isotopic composition) parameters suggest a predominant marine contribution to sedimentary OM. The branched and isoprenoid tetraether index (a proxy of soil OM input) indicates that soil OM contribution to the marine sediments is minor. However, the presence of retene (used as an indicator for coal-derived OM), the low carbon preference index and the average chain length of n-alkanes, and the depleted bulk radiocarbon content (Delta C-14 value) suggest that ancient OM of both coal-derived and mature IRD-derived OM is being buried in the Kongsfjord-Krossfjord system of Svalbard in the high Arctic. The relatively low retene concentrations in the marine surface sediments other than those in close vicinity of Ny Alesund, previously a coal-mining town, indicated that input of IRD-derived OM was predominantly responsible for the generally low Delta C-14 value. We applied three-end-member models based on Delta C-14 and retene and n-alkane concentration data to disentangle relative coal-derived, IRD-derived, and marine OM proportions to sedimentary OM. Sediments were comprised on average 2% +/- 4% of coal-derived OM, 37% +/- 17% of IRD-derived OM, and 61% +/- 18% of marine OM with higher IRD-derived OM deposit in the Kongsvegen glacier front. Our results highlight the important role of ancient OM on carbon dynamics in Arctic environments, in particular for benthic food webs. Article in Journal/Newspaper Arctic glacier Kongsfjord* Krossfjord* Svalbard NIOZ Repository (Royal Netherlands Institute for Sea Research) Arctic Svalbard Kongsfjord ENVELOPE(29.319,29.319,70.721,70.721) Kongsvegen ENVELOPE(12.657,12.657,78.854,78.854) Limnology and Oceanography 56 4 1463 1474 |
institution |
Open Polar |
collection |
NIOZ Repository (Royal Netherlands Institute for Sea Research) |
op_collection_id |
ftnioz |
language |
English |
description |
Soils, fine-grained ice-rafted detritus (IRD), coals, and marine surface sediments in the Arctic realm (Svalbard) were collected in 2007 and 2008 to characterize organic matter (OM) sources in Arctic marine sediments. Bulk geochemical (C : N ratio and stable carbon isotopic composition) parameters suggest a predominant marine contribution to sedimentary OM. The branched and isoprenoid tetraether index (a proxy of soil OM input) indicates that soil OM contribution to the marine sediments is minor. However, the presence of retene (used as an indicator for coal-derived OM), the low carbon preference index and the average chain length of n-alkanes, and the depleted bulk radiocarbon content (Delta C-14 value) suggest that ancient OM of both coal-derived and mature IRD-derived OM is being buried in the Kongsfjord-Krossfjord system of Svalbard in the high Arctic. The relatively low retene concentrations in the marine surface sediments other than those in close vicinity of Ny Alesund, previously a coal-mining town, indicated that input of IRD-derived OM was predominantly responsible for the generally low Delta C-14 value. We applied three-end-member models based on Delta C-14 and retene and n-alkane concentration data to disentangle relative coal-derived, IRD-derived, and marine OM proportions to sedimentary OM. Sediments were comprised on average 2% +/- 4% of coal-derived OM, 37% +/- 17% of IRD-derived OM, and 61% +/- 18% of marine OM with higher IRD-derived OM deposit in the Kongsvegen glacier front. Our results highlight the important role of ancient OM on carbon dynamics in Arctic environments, in particular for benthic food webs. |
format |
Article in Journal/Newspaper |
author |
Kim, J.-H. Peterse, F. Willmott, V. Klitgaard Kristensen, D. Baas, M. Schouten, S. Sinninghe Damsté, J.S. |
spellingShingle |
Kim, J.-H. Peterse, F. Willmott, V. Klitgaard Kristensen, D. Baas, M. Schouten, S. Sinninghe Damsté, J.S. Large ancient organic matter contributions to Arctic marine sediments (Svalbard) |
author_facet |
Kim, J.-H. Peterse, F. Willmott, V. Klitgaard Kristensen, D. Baas, M. Schouten, S. Sinninghe Damsté, J.S. |
author_sort |
Kim, J.-H. |
title |
Large ancient organic matter contributions to Arctic marine sediments (Svalbard) |
title_short |
Large ancient organic matter contributions to Arctic marine sediments (Svalbard) |
title_full |
Large ancient organic matter contributions to Arctic marine sediments (Svalbard) |
title_fullStr |
Large ancient organic matter contributions to Arctic marine sediments (Svalbard) |
title_full_unstemmed |
Large ancient organic matter contributions to Arctic marine sediments (Svalbard) |
title_sort |
large ancient organic matter contributions to arctic marine sediments (svalbard) |
publishDate |
2011 |
url |
https://www.vliz.be/imisdocs/publications/53/255853.pdf |
long_lat |
ENVELOPE(29.319,29.319,70.721,70.721) ENVELOPE(12.657,12.657,78.854,78.854) |
geographic |
Arctic Svalbard Kongsfjord Kongsvegen |
geographic_facet |
Arctic Svalbard Kongsfjord Kongsvegen |
genre |
Arctic glacier Kongsfjord* Krossfjord* Svalbard |
genre_facet |
Arctic glacier Kongsfjord* Krossfjord* Svalbard |
op_source |
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op_relation |
info:eu-repo/semantics/altIdentifier/wos/000294603400023 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.4319/lo.2011.56.4.1463 https://www.vliz.be/imisdocs/publications/53/255853.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.4319/lo.2011.56.4.1463 |
container_title |
Limnology and Oceanography |
container_volume |
56 |
container_issue |
4 |
container_start_page |
1463 |
op_container_end_page |
1474 |
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1766318249599827968 |