Contrasting composition of terrigenous organic matter in the dissolved, particulate and sedimentary organic carbon pools on the outer East Siberian Arctic Shelf; Biogeosciences; Vol. 13, iss. 22
| Parent link: | Biogeosciences/ European Geosciences Union, EGU Vol. 13, iss. 22.— 2016.— [P. 6121-6138] |
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| Corporate Authors: | , |
| מחברים אחרים: | , , , , , , , |
| סיכום: | Title screen Fluvial discharge and coastal erosion of the permafrost-dominated East Siberian Arctic delivers large quantities of terrigenous organic carbon (Terr-OC) to marine waters. The composition and fate of the remobilized Terr-OC needs to be better constrained as it impacts the potential for a climate-carbon feedback. In the present study, the bulk isotope (δ13C and Δ14C) and macromolecular (lignin-derived phenols) composition of the cross-shelf exported organic carbon (OC) in different marine pools is evaluated. For this purpose, as part of the SWERUS-C3 expedition (July-September 2014), sediment organic carbon (SOC) as well as water column (from surface and near-bottom seawater) dissolved organic carbon (DOC) and particulate organic carbon (POC) samples were collected along the outer shelves of the Kara Sea, Laptev Sea and East Siberian Sea. The results show that the Lena River and the DOC may have a preferential role in the transport of Terr-OC to the outer shelf. DOC concentrations (740-3600 µg L−1) were 1 order of magnitude higher than POC (20-360 µg L−1), with higher concentrations towards the Lena River plume. |
| שפה: | אנגלית |
| יצא לאור: |
2016
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| נושאים: | |
| גישה מקוונת: | http://dx.doi.org/10.5194/bg-13-6121-2016 |
| פורמט: | אלקטרוני Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=652253 |
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| 200 | 1 | |a Contrasting composition of terrigenous organic matter in the dissolved, particulate and sedimentary organic carbon pools on the outer East Siberian Arctic Shelf |f J. A. Salvado [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: p. 6135-6138 (83 tit.)] | ||
| 330 | |a Fluvial discharge and coastal erosion of the permafrost-dominated East Siberian Arctic delivers large quantities of terrigenous organic carbon (Terr-OC) to marine waters. The composition and fate of the remobilized Terr-OC needs to be better constrained as it impacts the potential for a climate-carbon feedback. In the present study, the bulk isotope (δ13C and Δ14C) and macromolecular (lignin-derived phenols) composition of the cross-shelf exported organic carbon (OC) in different marine pools is evaluated. For this purpose, as part of the SWERUS-C3 expedition (July-September 2014), sediment organic carbon (SOC) as well as water column (from surface and near-bottom seawater) dissolved organic carbon (DOC) and particulate organic carbon (POC) samples were collected along the outer shelves of the Kara Sea, Laptev Sea and East Siberian Sea. The results show that the Lena River and the DOC may have a preferential role in the transport of Terr-OC to the outer shelf. DOC concentrations (740-3600 µg L−1) were 1 order of magnitude higher than POC (20-360 µg L−1), with higher concentrations towards the Lena River plume. | ||
| 461 | |t Biogeosciences |f European Geosciences Union, EGU | ||
| 463 | |t Vol. 13, iss. 22 |v [P. 6121-6138] |d 2016 | ||
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