Arctic Nearshore Sediment Dynamics—An Example from Herschel Island—Qikiqtaruk, Canada
<jats:p>Increasing arctic coastal erosion rates imply a greater release of sediments and organic matter into the coastal zone. With 213 sediment samples taken around Herschel Island—Qikiqtaruk, Canadian Beaufort Sea, we aimed to gain new insights on sediment dynamics and geochemical properties...
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ftawi:oai:epic.awi.de:57544 2023-05-15T14:27:25+02:00 Arctic Nearshore Sediment Dynamics—An Example from Herschel Island—Qikiqtaruk, Canada Radosavljevic, Boris Lantuit, Hugues Knoblauch, Christian Couture, Nicole Herzschuh, Ulrike Fritz, Michael 2022-10-27 https://epic.awi.de/id/eprint/57544/ https://hdl.handle.net/10013/epic.97e9a60c-9ee5-45f3-a9c1-b377e44125da unknown MDPI AG Radosavljevic, B. , Lantuit, H. orcid:0000-0003-1497-6760 , Knoblauch, C. , Couture, N. , Herzschuh, U. and Fritz, M. orcid:0000-0003-4591-7325 (2022) Arctic Nearshore Sediment Dynamics—An Example from Herschel Island—Qikiqtaruk, Canada , Journal of Marine Science and Engineering, 10 (11), p. 1589 . doi:10.3390/jmse10111589 <https://doi.org/10.3390/jmse10111589> , hdl:10013/epic.97e9a60c-9ee5-45f3-a9c1-b377e44125da EPIC3Journal of Marine Science and Engineering, MDPI AG, 10(11), pp. 1589-1589, ISSN: 2077-1312 Article NonPeerReviewed 2022 ftawi https://doi.org/10.3390/jmse10111589 2022-11-14T00:12:58Z <jats:p>Increasing arctic coastal erosion rates imply a greater release of sediments and organic matter into the coastal zone. With 213 sediment samples taken around Herschel Island—Qikiqtaruk, Canadian Beaufort Sea, we aimed to gain new insights on sediment dynamics and geochemical properties of a shallow arctic nearshore zone. Spatial characteristics of nearshore sediment texture (moderately to poorly sorted silt) are dictated by hydrodynamic processes, but ice-related processes also play a role. We determined organic matter (OM) distribution and inferred the origin and quality of organic carbon by C/N ratios and stable carbon isotopes δ13C. The carbon content was higher offshore and in sheltered areas (mean: 1.0 wt. %., S.D.: 0.9) and the C/N ratios also showed a similar spatial pattern (mean: 11.1, S.D.: 3.1), while the δ13C (mean: −26.4‰ VPDB, S.D.: 0.4) distribution was more complex. We compared the geochemical parameters of our study with terrestrial and marine samples from other studies using a bootstrap approach. Sediments of the current study contained 6.5 times and 1.8 times less total organic carbon than undisturbed and disturbed terrestrial sediments, respectively. Therefore, degradation of OM and separation of carbon pools take place on land and continue in the nearshore zone, where OM is leached, mineralized, or transported beyond the study area.</jats:p> Article in Journal/Newspaper Arctic Arctic Beaufort Sea Herschel Island Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Canada Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) Journal of Marine Science and Engineering 10 11 1589 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
<jats:p>Increasing arctic coastal erosion rates imply a greater release of sediments and organic matter into the coastal zone. With 213 sediment samples taken around Herschel Island—Qikiqtaruk, Canadian Beaufort Sea, we aimed to gain new insights on sediment dynamics and geochemical properties of a shallow arctic nearshore zone. Spatial characteristics of nearshore sediment texture (moderately to poorly sorted silt) are dictated by hydrodynamic processes, but ice-related processes also play a role. We determined organic matter (OM) distribution and inferred the origin and quality of organic carbon by C/N ratios and stable carbon isotopes δ13C. The carbon content was higher offshore and in sheltered areas (mean: 1.0 wt. %., S.D.: 0.9) and the C/N ratios also showed a similar spatial pattern (mean: 11.1, S.D.: 3.1), while the δ13C (mean: −26.4‰ VPDB, S.D.: 0.4) distribution was more complex. We compared the geochemical parameters of our study with terrestrial and marine samples from other studies using a bootstrap approach. Sediments of the current study contained 6.5 times and 1.8 times less total organic carbon than undisturbed and disturbed terrestrial sediments, respectively. Therefore, degradation of OM and separation of carbon pools take place on land and continue in the nearshore zone, where OM is leached, mineralized, or transported beyond the study area.</jats:p> |
format |
Article in Journal/Newspaper |
author |
Radosavljevic, Boris Lantuit, Hugues Knoblauch, Christian Couture, Nicole Herzschuh, Ulrike Fritz, Michael |
spellingShingle |
Radosavljevic, Boris Lantuit, Hugues Knoblauch, Christian Couture, Nicole Herzschuh, Ulrike Fritz, Michael Arctic Nearshore Sediment Dynamics—An Example from Herschel Island—Qikiqtaruk, Canada |
author_facet |
Radosavljevic, Boris Lantuit, Hugues Knoblauch, Christian Couture, Nicole Herzschuh, Ulrike Fritz, Michael |
author_sort |
Radosavljevic, Boris |
title |
Arctic Nearshore Sediment Dynamics—An Example from Herschel Island—Qikiqtaruk, Canada |
title_short |
Arctic Nearshore Sediment Dynamics—An Example from Herschel Island—Qikiqtaruk, Canada |
title_full |
Arctic Nearshore Sediment Dynamics—An Example from Herschel Island—Qikiqtaruk, Canada |
title_fullStr |
Arctic Nearshore Sediment Dynamics—An Example from Herschel Island—Qikiqtaruk, Canada |
title_full_unstemmed |
Arctic Nearshore Sediment Dynamics—An Example from Herschel Island—Qikiqtaruk, Canada |
title_sort |
arctic nearshore sediment dynamics—an example from herschel island—qikiqtaruk, canada |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://epic.awi.de/id/eprint/57544/ https://hdl.handle.net/10013/epic.97e9a60c-9ee5-45f3-a9c1-b377e44125da |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) |
geographic |
Arctic Canada Herschel Island |
geographic_facet |
Arctic Canada Herschel Island |
genre |
Arctic Arctic Beaufort Sea Herschel Island |
genre_facet |
Arctic Arctic Beaufort Sea Herschel Island |
op_source |
EPIC3Journal of Marine Science and Engineering, MDPI AG, 10(11), pp. 1589-1589, ISSN: 2077-1312 |
op_relation |
Radosavljevic, B. , Lantuit, H. orcid:0000-0003-1497-6760 , Knoblauch, C. , Couture, N. , Herzschuh, U. and Fritz, M. orcid:0000-0003-4591-7325 (2022) Arctic Nearshore Sediment Dynamics—An Example from Herschel Island—Qikiqtaruk, Canada , Journal of Marine Science and Engineering, 10 (11), p. 1589 . doi:10.3390/jmse10111589 <https://doi.org/10.3390/jmse10111589> , hdl:10013/epic.97e9a60c-9ee5-45f3-a9c1-b377e44125da |
op_doi |
https://doi.org/10.3390/jmse10111589 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
10 |
container_issue |
11 |
container_start_page |
1589 |
_version_ |
1766301157154619392 |