Summer rainfall dissolved organic carbon, solute, and sediment fluxes in a small Arctic coastal catchment on Herschel Island (Yukon Territory, Canada)
Coastal ecosystems in the Arctic are affected by climate change. As summer rainfall frequency and intensity are projected to increase in the future, more organic matter, nutrients and sediment could be mobilized and transported into the coastal nearshore zones. However, knowledge of current processe...
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ftzenodo:oai:zenodo.org:3232884 2024-09-15T17:50:04+00:00 Summer rainfall dissolved organic carbon, solute, and sediment fluxes in a small Arctic coastal catchment on Herschel Island (Yukon Territory, Canada) Coch, Caroline Lamoureux, Scott F. Knoblauch, Christian Eischeid, Isabell Fritz, Michael Obu, Jaroslav Lantuit, Hugues 2018-08-08 https://doi.org/10.1139/as-2018-0010 unknown Zenodo https://zenodo.org/communities/nunataryuk https://doi.org/10.1139/as-2018-0010 oai:zenodo.org:3232884 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Arctic Science, 4, (2018-08-08) permafrost hydrology lateral fluxes hysteresis climate change info:eu-repo/semantics/article 2018 ftzenodo https://doi.org/10.1139/as-2018-0010 2024-07-27T05:57:22Z Coastal ecosystems in the Arctic are affected by climate change. As summer rainfall frequency and intensity are projected to increase in the future, more organic matter, nutrients and sediment could be mobilized and transported into the coastal nearshore zones. However, knowledge of current processes and future changes is limited. We investigated streamflow dynamics and the impacts of summer rainfall on lateral fluxes in a small coastal catchment on Herschel Island in the western Canadian Arctic. For the summer monitoring periods of 2014–2016, mean dissolved organic matter flux over 17 days amounted to 82.7 ± 30.7kg km −2 and mean total dissolved solids flux to 5252 ± 1224kg km −2 . Flux of suspended sediment was 7245kg km −2 in 2015, and 369kg km −2 in 2016. We found that 2.0% of suspended sediment was composed of particulate organic carbon. Data and hysteresis analysis suggest a limited supply of sediments; their interannual variability is most likely caused by short-lived localized disturbances. In contrast, our results imply that dissolved organic carbon is widely available throughout the catchment and exhibits positive linear relationship with runoff. We hypothesize that increased projected rainfall in the future will result in a similar increase of dissolved organic carbon fluxes. Corresponding author: Caroline Coch (e-mail: caroline.coch@awi.de) Article in Journal/Newspaper Arctic Climate change Herschel Herschel Island permafrost Yukon Zenodo Arctic Science 4 4 750 780 |
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permafrost hydrology lateral fluxes hysteresis climate change |
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permafrost hydrology lateral fluxes hysteresis climate change Coch, Caroline Lamoureux, Scott F. Knoblauch, Christian Eischeid, Isabell Fritz, Michael Obu, Jaroslav Lantuit, Hugues Summer rainfall dissolved organic carbon, solute, and sediment fluxes in a small Arctic coastal catchment on Herschel Island (Yukon Territory, Canada) |
topic_facet |
permafrost hydrology lateral fluxes hysteresis climate change |
description |
Coastal ecosystems in the Arctic are affected by climate change. As summer rainfall frequency and intensity are projected to increase in the future, more organic matter, nutrients and sediment could be mobilized and transported into the coastal nearshore zones. However, knowledge of current processes and future changes is limited. We investigated streamflow dynamics and the impacts of summer rainfall on lateral fluxes in a small coastal catchment on Herschel Island in the western Canadian Arctic. For the summer monitoring periods of 2014–2016, mean dissolved organic matter flux over 17 days amounted to 82.7 ± 30.7kg km −2 and mean total dissolved solids flux to 5252 ± 1224kg km −2 . Flux of suspended sediment was 7245kg km −2 in 2015, and 369kg km −2 in 2016. We found that 2.0% of suspended sediment was composed of particulate organic carbon. Data and hysteresis analysis suggest a limited supply of sediments; their interannual variability is most likely caused by short-lived localized disturbances. In contrast, our results imply that dissolved organic carbon is widely available throughout the catchment and exhibits positive linear relationship with runoff. We hypothesize that increased projected rainfall in the future will result in a similar increase of dissolved organic carbon fluxes. Corresponding author: Caroline Coch (e-mail: caroline.coch@awi.de) |
format |
Article in Journal/Newspaper |
author |
Coch, Caroline Lamoureux, Scott F. Knoblauch, Christian Eischeid, Isabell Fritz, Michael Obu, Jaroslav Lantuit, Hugues |
author_facet |
Coch, Caroline Lamoureux, Scott F. Knoblauch, Christian Eischeid, Isabell Fritz, Michael Obu, Jaroslav Lantuit, Hugues |
author_sort |
Coch, Caroline |
title |
Summer rainfall dissolved organic carbon, solute, and sediment fluxes in a small Arctic coastal catchment on Herschel Island (Yukon Territory, Canada) |
title_short |
Summer rainfall dissolved organic carbon, solute, and sediment fluxes in a small Arctic coastal catchment on Herschel Island (Yukon Territory, Canada) |
title_full |
Summer rainfall dissolved organic carbon, solute, and sediment fluxes in a small Arctic coastal catchment on Herschel Island (Yukon Territory, Canada) |
title_fullStr |
Summer rainfall dissolved organic carbon, solute, and sediment fluxes in a small Arctic coastal catchment on Herschel Island (Yukon Territory, Canada) |
title_full_unstemmed |
Summer rainfall dissolved organic carbon, solute, and sediment fluxes in a small Arctic coastal catchment on Herschel Island (Yukon Territory, Canada) |
title_sort |
summer rainfall dissolved organic carbon, solute, and sediment fluxes in a small arctic coastal catchment on herschel island (yukon territory, canada) |
publisher |
Zenodo |
publishDate |
2018 |
url |
https://doi.org/10.1139/as-2018-0010 |
genre |
Arctic Climate change Herschel Herschel Island permafrost Yukon |
genre_facet |
Arctic Climate change Herschel Herschel Island permafrost Yukon |
op_source |
Arctic Science, 4, (2018-08-08) |
op_relation |
https://zenodo.org/communities/nunataryuk https://doi.org/10.1139/as-2018-0010 oai:zenodo.org:3232884 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.1139/as-2018-0010 |
container_title |
Arctic Science |
container_volume |
4 |
container_issue |
4 |
container_start_page |
750 |
op_container_end_page |
780 |
_version_ |
1810291923517177856 |