Contrasting responses in dissolved organic carbon to extreme climate events from adjacent boreal landscapes in Northern Sweden
The ongoing pressures of climate change, as expressed by the increased intensity, duration, and frequency of temperature and precipitation events, threatens the storage of carbon in northern latitudes. One key concern is how these events will affect the production, mobilization, and export of dissol...
Published in: | Environmental Research Letters |
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2019
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ftumeauniv:oai:DiVA.org:umu-161981 2024-02-11T10:07:11+01:00 Contrasting responses in dissolved organic carbon to extreme climate events from adjacent boreal landscapes in Northern Sweden Tiwari, Tejshree Sponseller, Ryan A. Laudon, Hjalmar 2019 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-161981 https://doi.org/10.1088/1748-9326/ab23d4 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap IOP PUBLISHING LTD Environmental Research Letters, 2019, 14:8, orcid:0000-0002-5758-2705 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-161981 doi:10.1088/1748-9326/ab23d4 ISI:000476829600007 Scopus 2-s2.0-85072707947 info:eu-repo/semantics/openAccess extreme climate events boreal streams peatland boreal forest climate change water quality ssolve organic carbon Climate Research Klimatforskning Article in journal info:eu-repo/semantics/article text 2019 ftumeauniv https://doi.org/10.1088/1748-9326/ab23d4 2024-01-17T23:36:36Z The ongoing pressures of climate change, as expressed by the increased intensity, duration, and frequency of temperature and precipitation events, threatens the storage of carbon in northern latitudes. One key concern is how these events will affect the production, mobilization, and export of dissolved organic carbon (DOC), the main form of aquatic carbon export in these regions. In this study, we retrospectively show contrasting effects of climate extremes over 23 years on two adjacent boreal catchments, one dominated by forest cover and the other draining a mire (wetland), despite experiencing the same extreme climate events. During the peak snowmelt, DOC concentrations ranged from 20 to 33 mg l(-1) in the forest catchment and 10-28 mg l(-1) in the mire catchment respectively, highlighting large inter-annual variation in the springtime hydrologicCexport at both sites. Weused climate and discharge variables to predict this variation, and found that DOC from the forested catchment, which is derived largely from riparian soils, had the highest concentrations following cold summers, dry autumns, and winters with high precipitation. By contrast, in the mire outlet, where DOC is primarily derived from decomposing peat, the highest DOC concentrations in the spring followed cold/dry winters and dry summers. Our results indicate that processes regulating stream DOC concentrations during spring in both catchments were dependent on both temperature and precipitation in multiple seasons. Together, these patterns suggest that DOC responses to climatic extremes are complex and generate variable patterns in springtime concentrations that are strongly dependent upon landscape context. Article in Journal/Newspaper Northern Sweden Umeå University: Publications (DiVA) Environmental Research Letters 14 8 084007 |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
extreme climate events boreal streams peatland boreal forest climate change water quality ssolve organic carbon Climate Research Klimatforskning |
spellingShingle |
extreme climate events boreal streams peatland boreal forest climate change water quality ssolve organic carbon Climate Research Klimatforskning Tiwari, Tejshree Sponseller, Ryan A. Laudon, Hjalmar Contrasting responses in dissolved organic carbon to extreme climate events from adjacent boreal landscapes in Northern Sweden |
topic_facet |
extreme climate events boreal streams peatland boreal forest climate change water quality ssolve organic carbon Climate Research Klimatforskning |
description |
The ongoing pressures of climate change, as expressed by the increased intensity, duration, and frequency of temperature and precipitation events, threatens the storage of carbon in northern latitudes. One key concern is how these events will affect the production, mobilization, and export of dissolved organic carbon (DOC), the main form of aquatic carbon export in these regions. In this study, we retrospectively show contrasting effects of climate extremes over 23 years on two adjacent boreal catchments, one dominated by forest cover and the other draining a mire (wetland), despite experiencing the same extreme climate events. During the peak snowmelt, DOC concentrations ranged from 20 to 33 mg l(-1) in the forest catchment and 10-28 mg l(-1) in the mire catchment respectively, highlighting large inter-annual variation in the springtime hydrologicCexport at both sites. Weused climate and discharge variables to predict this variation, and found that DOC from the forested catchment, which is derived largely from riparian soils, had the highest concentrations following cold summers, dry autumns, and winters with high precipitation. By contrast, in the mire outlet, where DOC is primarily derived from decomposing peat, the highest DOC concentrations in the spring followed cold/dry winters and dry summers. Our results indicate that processes regulating stream DOC concentrations during spring in both catchments were dependent on both temperature and precipitation in multiple seasons. Together, these patterns suggest that DOC responses to climatic extremes are complex and generate variable patterns in springtime concentrations that are strongly dependent upon landscape context. |
format |
Article in Journal/Newspaper |
author |
Tiwari, Tejshree Sponseller, Ryan A. Laudon, Hjalmar |
author_facet |
Tiwari, Tejshree Sponseller, Ryan A. Laudon, Hjalmar |
author_sort |
Tiwari, Tejshree |
title |
Contrasting responses in dissolved organic carbon to extreme climate events from adjacent boreal landscapes in Northern Sweden |
title_short |
Contrasting responses in dissolved organic carbon to extreme climate events from adjacent boreal landscapes in Northern Sweden |
title_full |
Contrasting responses in dissolved organic carbon to extreme climate events from adjacent boreal landscapes in Northern Sweden |
title_fullStr |
Contrasting responses in dissolved organic carbon to extreme climate events from adjacent boreal landscapes in Northern Sweden |
title_full_unstemmed |
Contrasting responses in dissolved organic carbon to extreme climate events from adjacent boreal landscapes in Northern Sweden |
title_sort |
contrasting responses in dissolved organic carbon to extreme climate events from adjacent boreal landscapes in northern sweden |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2019 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-161981 https://doi.org/10.1088/1748-9326/ab23d4 |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
Environmental Research Letters, 2019, 14:8, orcid:0000-0002-5758-2705 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-161981 doi:10.1088/1748-9326/ab23d4 ISI:000476829600007 Scopus 2-s2.0-85072707947 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1088/1748-9326/ab23d4 |
container_title |
Environmental Research Letters |
container_volume |
14 |
container_issue |
8 |
container_start_page |
084007 |
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1790605350575013888 |