Arctic nearshore sediment dynamics - an example from Herschel Island - Qikiqtaruk, Canada
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...
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ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:61279 2023-12-10T09:45:11+01:00 Arctic nearshore sediment dynamics - an example from Herschel Island - Qikiqtaruk, Canada Radosavljevic, Boris Lantuit, Hugues (Prof. Dr.) Knoblauch, Christian (Dr. rer. nat.) Couture, Nicole Herzschuh, Ulrike (Prof. Dr.) Fritz, Michael (Dr.) 2022-10-27 https://publishup.uni-potsdam.de/frontdoor/index/index/docId/61279 https://doi.org/10.3390/jmse10111589 eng eng https://publishup.uni-potsdam.de/frontdoor/index/index/docId/61279 https://doi.org/10.3390/jmse10111589 https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/closedAccess ddc:550 Institut für Biochemie und Biologie Institut für Geowissenschaften Institut für Umweltwissenschaften und Geographie article doc-type:article 2022 ftubpotsdam https://doi.org/10.3390/jmse10111589 2023-11-12T23:35:12Z 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 delta C-13. 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 delta C-13 (mean: -26.4 parts per thousand 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. Article in Journal/Newspaper Arctic Beaufort Sea Herschel Island University of Potsdam: publish.UP 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 |
collection |
University of Potsdam: publish.UP |
op_collection_id |
ftubpotsdam |
language |
English |
topic |
ddc:550 Institut für Biochemie und Biologie Institut für Geowissenschaften Institut für Umweltwissenschaften und Geographie |
spellingShingle |
ddc:550 Institut für Biochemie und Biologie Institut für Geowissenschaften Institut für Umweltwissenschaften und Geographie Radosavljevic, Boris Lantuit, Hugues (Prof. Dr.) Knoblauch, Christian (Dr. rer. nat.) Couture, Nicole Herzschuh, Ulrike (Prof. Dr.) Fritz, Michael (Dr.) Arctic nearshore sediment dynamics - an example from Herschel Island - Qikiqtaruk, Canada |
topic_facet |
ddc:550 Institut für Biochemie und Biologie Institut für Geowissenschaften Institut für Umweltwissenschaften und Geographie |
description |
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 delta C-13. 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 delta C-13 (mean: -26.4 parts per thousand 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. |
format |
Article in Journal/Newspaper |
author |
Radosavljevic, Boris Lantuit, Hugues (Prof. Dr.) Knoblauch, Christian (Dr. rer. nat.) Couture, Nicole Herzschuh, Ulrike (Prof. Dr.) Fritz, Michael (Dr.) |
author_facet |
Radosavljevic, Boris Lantuit, Hugues (Prof. Dr.) Knoblauch, Christian (Dr. rer. nat.) Couture, Nicole Herzschuh, Ulrike (Prof. Dr.) Fritz, Michael (Dr.) |
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 |
publishDate |
2022 |
url |
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/61279 https://doi.org/10.3390/jmse10111589 |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) |
geographic |
Arctic Canada Herschel Island |
geographic_facet |
Arctic Canada Herschel Island |
genre |
Arctic Beaufort Sea Herschel Island |
genre_facet |
Arctic Beaufort Sea Herschel Island |
op_relation |
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/61279 https://doi.org/10.3390/jmse10111589 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/closedAccess |
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_ |
1784888420399579136 |