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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crcansciencepubl:10.1139/as-2018-0010 2024-04-07T07:48:33+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 http://dx.doi.org/10.1139/as-2018-0010 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2018-0010 https://cdnsciencepub.com/doi/pdf/10.1139/as-2018-0010 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Arctic Science volume 4, issue 4, page 750-780 ISSN 2368-7460 2368-7460 General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science journal-article 2018 crcansciencepubl https://doi.org/10.1139/as-2018-0010 2024-03-08T00:37:46Z 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 Yukon Canadian Science Publishing Arctic Yukon Canada Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) Arctic Science 4 4 750 780 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science |
spellingShingle |
General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science 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 |
General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science |
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 |
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 |
Canadian Science Publishing |
publishDate |
2018 |
url |
http://dx.doi.org/10.1139/as-2018-0010 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2018-0010 https://cdnsciencepub.com/doi/pdf/10.1139/as-2018-0010 |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) |
geographic |
Arctic Yukon Canada Herschel Island |
geographic_facet |
Arctic Yukon Canada Herschel Island |
genre |
Arctic Arctic Climate change Herschel Herschel Island Yukon |
genre_facet |
Arctic Arctic Climate change Herschel Herschel Island Yukon |
op_source |
Arctic Science volume 4, issue 4, page 750-780 ISSN 2368-7460 2368-7460 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
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_ |
1795662661786009600 |