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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Canadian Science Publishing
2018
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Online Access: | https://doi.org/10.1139/as-2018-0010 https://doaj.org/article/b855bb3f520f4a2cb31be84d974450d0 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:b855bb3f520f4a2cb31be84d974450d0 2023-05-15T14:22:20+02:00 Summer rainfall dissolved organic carbon, solute, and sediment fluxes in a small Arctic coastal catchment on Herschel Island (Yukon Territory, Canada) Caroline Coch Scott F. Lamoureux Christian Knoblauch Isabell Eischeid Michael Fritz Jaroslav Obu Hugues Lantuit 2018-12-01 https://doi.org/10.1139/as-2018-0010 https://doaj.org/article/b855bb3f520f4a2cb31be84d974450d0 en fr eng fre Canadian Science Publishing doi:10.1139/as-2018-0010 2368-7460 https://doaj.org/article/b855bb3f520f4a2cb31be84d974450d0 undefined Arctic Science, Vol 4, Iss 4, Pp 750-780 (2018) permafrost hydrology lateral fluxes hysteresis climate change envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.1139/as-2018-0010 2023-01-22T19:11:46Z 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 ± 30.7 kg km−2 and mean total dissolved solids flux to 5252 ± 1224 kg km−2. Flux of suspended sediment was 7245 kg km−2 in 2015, and 369 kg 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. Article in Journal/Newspaper Arctic Arctic Climate change Herschel Herschel Island permafrost Yukon Unknown Arctic Canada Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) Yukon Arctic Science 4 4 750 780 |
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English French |
topic |
permafrost hydrology lateral fluxes hysteresis climate change envir geo |
spellingShingle |
permafrost hydrology lateral fluxes hysteresis climate change envir geo Caroline Coch Scott F. Lamoureux Christian Knoblauch Isabell Eischeid Michael Fritz Jaroslav Obu Hugues Lantuit 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 envir geo |
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 ± 30.7 kg km−2 and mean total dissolved solids flux to 5252 ± 1224 kg km−2. Flux of suspended sediment was 7245 kg km−2 in 2015, and 369 kg 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. |
format |
Article in Journal/Newspaper |
author |
Caroline Coch Scott F. Lamoureux Christian Knoblauch Isabell Eischeid Michael Fritz Jaroslav Obu Hugues Lantuit |
author_facet |
Caroline Coch Scott F. Lamoureux Christian Knoblauch Isabell Eischeid Michael Fritz Jaroslav Obu Hugues Lantuit |
author_sort |
Caroline Coch |
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 |
Canadian Science Publishing |
publishDate |
2018 |
url |
https://doi.org/10.1139/as-2018-0010 https://doaj.org/article/b855bb3f520f4a2cb31be84d974450d0 |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) |
geographic |
Arctic Canada Herschel Island Yukon |
geographic_facet |
Arctic Canada Herschel Island Yukon |
genre |
Arctic Arctic Climate change Herschel Herschel Island permafrost Yukon |
genre_facet |
Arctic Arctic Climate change Herschel Herschel Island permafrost Yukon |
op_source |
Arctic Science, Vol 4, Iss 4, Pp 750-780 (2018) |
op_relation |
doi:10.1139/as-2018-0010 2368-7460 https://doaj.org/article/b855bb3f520f4a2cb31be84d974450d0 |
op_rights |
undefined |
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_ |
1766294963099795456 |