Sedimentological and biogeochemical composition of fractionated permafrost- and sediment organic carbon of the nearshore zone of Herschel Island (Yukon, Canada)
This study aims to give insight into the processes affecting permafrost organic carbon (OC) during transport from its source to its sink, through a study on three sediment fractions along a land-to-ocean transect. Material was followed from thawing permafrost, through a dynamic 'disturbed zone&...
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Language: | English |
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PANGAEA
2024
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.960026 https://doi.org/10.1594/PANGAEA.960026 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.960026 |
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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 |
Arctic Biomarkers HER Herschel_Island MULT Multiple investigations organic carbon Permafrost sediment |
spellingShingle |
Arctic Biomarkers HER Herschel_Island MULT Multiple investigations organic carbon Permafrost sediment Jong, Dirk Bröder, Lisa Tesi, Tommaso Tanski, George Oudenhuijsen, Mickolai Fritz, Michael Lantuit, Hugues Haghipour, Negar Eglinton, Timothy Ian Vonk, Jorien E Sedimentological and biogeochemical composition of fractionated permafrost- and sediment organic carbon of the nearshore zone of Herschel Island (Yukon, Canada) |
topic_facet |
Arctic Biomarkers HER Herschel_Island MULT Multiple investigations organic carbon Permafrost sediment |
description |
This study aims to give insight into the processes affecting permafrost organic carbon (OC) during transport from its source to its sink, through a study on three sediment fractions along a land-to-ocean transect. Material was followed from thawing permafrost, through a dynamic 'disturbed zone' and the nearshore zone, to an enclosed basin offshore Herschel Island - Qikiqtaruk, to assess sorting and degradation processes on specific fractions of sediment OC. Sediment, soil and permafrost samples were taken along a transect from the source (undisturbed active layer and permafrost), via two transitional zones (a terrestrial disturbed zone, i.e. the 'scar zone' of the RTS, and the marine nearshore zone up to a water depth of 5 m), to sink (basin sediment, water depth >20 m) at the coast of Herschel Island – Qikiqtaruk and the (semi-enclosed) Herschel Basin in Yukon, Canada, just west of the Mackenzie River delta. Samples were taken in May 2016 and July 2017. Sample material was fractionated with an aqueous (MilliQ) solution of sodium polytungstate (SPT; Na6[H2W12O40]), with a density of 1.8 g cm³, followed by wet-sieving over a 63 µm mesh, thus separating loose OC from mineral-associated OC. Each fraction was analysed for element content (TOC, TN), carbon isotopes (δ¹³C, Δ¹⁴C), molecular biomarkers (n-alkanes, n-alkanoic acids, lignin phenols, cutin acids), and mineral surface area. The relative abundance of specific biomarkers can also be used as indicator for degradation of organic carbon. Furthermore, the OC 'loading' (concentration of OC normalised to mineral surface area; in mgOC/m²) and terrestrial biomarker loading (µgOC/m²) can be used to assess loss of (permafrost) OC from mineral particles. The combination of these methods allows us to disentangle sorting processes from degradation of OC along the land-to-ocean continuum, and provides a detailed insight into the fate of thawed and eroded permafrost OC. |
format |
Dataset |
author |
Jong, Dirk Bröder, Lisa Tesi, Tommaso Tanski, George Oudenhuijsen, Mickolai Fritz, Michael Lantuit, Hugues Haghipour, Negar Eglinton, Timothy Ian Vonk, Jorien E |
author_facet |
Jong, Dirk Bröder, Lisa Tesi, Tommaso Tanski, George Oudenhuijsen, Mickolai Fritz, Michael Lantuit, Hugues Haghipour, Negar Eglinton, Timothy Ian Vonk, Jorien E |
author_sort |
Jong, Dirk |
title |
Sedimentological and biogeochemical composition of fractionated permafrost- and sediment organic carbon of the nearshore zone of Herschel Island (Yukon, Canada) |
title_short |
Sedimentological and biogeochemical composition of fractionated permafrost- and sediment organic carbon of the nearshore zone of Herschel Island (Yukon, Canada) |
title_full |
Sedimentological and biogeochemical composition of fractionated permafrost- and sediment organic carbon of the nearshore zone of Herschel Island (Yukon, Canada) |
title_fullStr |
Sedimentological and biogeochemical composition of fractionated permafrost- and sediment organic carbon of the nearshore zone of Herschel Island (Yukon, Canada) |
title_full_unstemmed |
Sedimentological and biogeochemical composition of fractionated permafrost- and sediment organic carbon of the nearshore zone of Herschel Island (Yukon, Canada) |
title_sort |
sedimentological and biogeochemical composition of fractionated permafrost- and sediment organic carbon of the nearshore zone of herschel island (yukon, canada) |
publisher |
PANGAEA |
publishDate |
2024 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.960026 https://doi.org/10.1594/PANGAEA.960026 |
op_coverage |
MEDIAN LATITUDE: 69.574129 * MEDIAN LONGITUDE: -138.961094 * SOUTH-BOUND LATITUDE: 69.540730 * WEST-BOUND LONGITUDE: -139.015820 * NORTH-BOUND LATITUDE: 69.579530 * EAST-BOUND LONGITUDE: -138.916890 * DATE/TIME START: 2016-05-01T00:00:00 * DATE/TIME END: 2017-07-31T00:00:00 |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) ENVELOPE(-139.015820,-138.916890,69.579530,69.540730) |
geographic |
Arctic Yukon Mackenzie River Canada Herschel Island |
geographic_facet |
Arctic Yukon Mackenzie River Canada Herschel Island |
genre |
Arctic Herschel Herschel Island Mackenzie river permafrost Yukon |
genre_facet |
Arctic Herschel Herschel Island Mackenzie river permafrost Yukon |
op_relation |
Jong, Dirk; Bröder, Lisa; Tesi, Tommaso; Tanski, George; Oudenhuijsen, Mickolai; Fritz, Michael; Lantuit, Hugues; Haghipour, Negar; Eglinton, Timothy Ian; Vonk, Jorien E (2024): Selective Sorting and Degradation of Permafrost Organic Matter in the Nearshore Zone of Herschel Island (Yukon, Canada). Journal of Geophysical Research: Biogeosciences, 129(1), e2023JG007479, https://doi.org/10.1029/2023JG007479 Jong, Dirk; Bröder, Lisa; Tanski, George; Fritz, Michael; Lantuit, Hugues; Tesi, Tommaso; Haghipour, Negar; Eglinton, Timothy Ian; Vonk, Jorien E (2020): Biogeochemistry of suspended particulate matter and sediment from the nearshore zone of Herschel Island, Canada. PANGAEA, https://doi.org/10.1594/PANGAEA.913721 Jong, Dirk; Bröder, Lisa; Tanski, George; Fritz, Michael; Lantuit, Hugues; Tesi, Tommaso; Haghipour, Negar; Eglinton, Timothy Ian; Vonk, Jorien E (2020): Nearshore zone dynamics determine pathway of organic carbon from eroding permafrost coasts. Geophysical Research Letters, https://doi.org/10.1029/2020GL088561 https://doi.pangaea.de/10.1594/PANGAEA.960026 https://doi.org/10.1594/PANGAEA.960026 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.96002610.1029/2023JG00747910.1594/PANGAEA.91372110.1029/2020GL088561 |
_version_ |
1802641868239929344 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.960026 2024-06-23T07:50:55+00:00 Sedimentological and biogeochemical composition of fractionated permafrost- and sediment organic carbon of the nearshore zone of Herschel Island (Yukon, Canada) Jong, Dirk Bröder, Lisa Tesi, Tommaso Tanski, George Oudenhuijsen, Mickolai Fritz, Michael Lantuit, Hugues Haghipour, Negar Eglinton, Timothy Ian Vonk, Jorien E MEDIAN LATITUDE: 69.574129 * MEDIAN LONGITUDE: -138.961094 * SOUTH-BOUND LATITUDE: 69.540730 * WEST-BOUND LONGITUDE: -139.015820 * NORTH-BOUND LATITUDE: 69.579530 * EAST-BOUND LONGITUDE: -138.916890 * DATE/TIME START: 2016-05-01T00:00:00 * DATE/TIME END: 2017-07-31T00:00:00 2024 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.960026 https://doi.org/10.1594/PANGAEA.960026 en eng PANGAEA Jong, Dirk; Bröder, Lisa; Tesi, Tommaso; Tanski, George; Oudenhuijsen, Mickolai; Fritz, Michael; Lantuit, Hugues; Haghipour, Negar; Eglinton, Timothy Ian; Vonk, Jorien E (2024): Selective Sorting and Degradation of Permafrost Organic Matter in the Nearshore Zone of Herschel Island (Yukon, Canada). Journal of Geophysical Research: Biogeosciences, 129(1), e2023JG007479, https://doi.org/10.1029/2023JG007479 Jong, Dirk; Bröder, Lisa; Tanski, George; Fritz, Michael; Lantuit, Hugues; Tesi, Tommaso; Haghipour, Negar; Eglinton, Timothy Ian; Vonk, Jorien E (2020): Biogeochemistry of suspended particulate matter and sediment from the nearshore zone of Herschel Island, Canada. PANGAEA, https://doi.org/10.1594/PANGAEA.913721 Jong, Dirk; Bröder, Lisa; Tanski, George; Fritz, Michael; Lantuit, Hugues; Tesi, Tommaso; Haghipour, Negar; Eglinton, Timothy Ian; Vonk, Jorien E (2020): Nearshore zone dynamics determine pathway of organic carbon from eroding permafrost coasts. Geophysical Research Letters, https://doi.org/10.1029/2020GL088561 https://doi.pangaea.de/10.1594/PANGAEA.960026 https://doi.org/10.1594/PANGAEA.960026 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess Arctic Biomarkers HER Herschel_Island MULT Multiple investigations organic carbon Permafrost sediment Dataset 2024 ftpangaea https://doi.org/10.1594/PANGAEA.96002610.1029/2023JG00747910.1594/PANGAEA.91372110.1029/2020GL088561 2024-06-12T14:17:12Z This study aims to give insight into the processes affecting permafrost organic carbon (OC) during transport from its source to its sink, through a study on three sediment fractions along a land-to-ocean transect. Material was followed from thawing permafrost, through a dynamic 'disturbed zone' and the nearshore zone, to an enclosed basin offshore Herschel Island - Qikiqtaruk, to assess sorting and degradation processes on specific fractions of sediment OC. Sediment, soil and permafrost samples were taken along a transect from the source (undisturbed active layer and permafrost), via two transitional zones (a terrestrial disturbed zone, i.e. the 'scar zone' of the RTS, and the marine nearshore zone up to a water depth of 5 m), to sink (basin sediment, water depth >20 m) at the coast of Herschel Island – Qikiqtaruk and the (semi-enclosed) Herschel Basin in Yukon, Canada, just west of the Mackenzie River delta. Samples were taken in May 2016 and July 2017. Sample material was fractionated with an aqueous (MilliQ) solution of sodium polytungstate (SPT; Na6[H2W12O40]), with a density of 1.8 g cm³, followed by wet-sieving over a 63 µm mesh, thus separating loose OC from mineral-associated OC. Each fraction was analysed for element content (TOC, TN), carbon isotopes (δ¹³C, Δ¹⁴C), molecular biomarkers (n-alkanes, n-alkanoic acids, lignin phenols, cutin acids), and mineral surface area. The relative abundance of specific biomarkers can also be used as indicator for degradation of organic carbon. Furthermore, the OC 'loading' (concentration of OC normalised to mineral surface area; in mgOC/m²) and terrestrial biomarker loading (µgOC/m²) can be used to assess loss of (permafrost) OC from mineral particles. The combination of these methods allows us to disentangle sorting processes from degradation of OC along the land-to-ocean continuum, and provides a detailed insight into the fate of thawed and eroded permafrost OC. Dataset Arctic Herschel Herschel Island Mackenzie river permafrost Yukon PANGAEA - Data Publisher for Earth & Environmental Science Arctic Yukon Mackenzie River Canada Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) ENVELOPE(-139.015820,-138.916890,69.579530,69.540730) |