Wildfires lead to decreased carbon and increased nitrogen concentrations in upland arctic streams
The Central Siberian Plateau (CSP) is undergoing rapid climate change that has resulted in increased frequency of forest fires and subsequent alteration of watershed carbon and nutrient dynamics. Across a watershed chronosequence (3 to >100 years since wildfire) we quantified the effects of fire...
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dataone:sha256:8e503ee9e96effaab6fc9d52bfc9775218c70e5c894ac8ffb7dbfec5768bbd78 2024-10-03T18:45:47+00:00 Wildfires lead to decreased carbon and increased nitrogen concentrations in upland arctic streams Bianca Rodriguez-Cardona Ashley A. Coble Adam Wymore Roman Kolosov David C. Podgorski Phoebe Zito Robert G.M. Spencer Anatoly S. Prokushkin William McDowell BEGINDATE: 2011-06-04T00:00:00Z ENDDATE: 2018-07-15T00:00:00Z 2019-11-15T15:07:39.569Z https://search.dataone.org/view/sha256:8e503ee9e96effaab6fc9d52bfc9775218c70e5c894ac8ffb7dbfec5768bbd78 unknown DOM forest fires Arctic biogeochemistry NO3 streams DOC Dataset 2019 dataone:urn:node:HYDROSHARE 2024-10-03T18:17:25Z The Central Siberian Plateau (CSP) is undergoing rapid climate change that has resulted in increased frequency of forest fires and subsequent alteration of watershed carbon and nutrient dynamics. Across a watershed chronosequence (3 to >100 years since wildfire) we quantified the effects of fire on quantity and composition of dissolved organic matter composition (DOM), stream water nutrients concentrations, as well as in-stream nutrient uptake. Wildfires increased concentrations of nitrate for a decade, while decreasing concentrations of dissolved organic carbon and nitrogen (DOC and DON) and aliphatic DOM contribution for five decades. These post-wildfire changes in stream DOM result in lower uptake efficiency of in-stream nitrate in recently burned watersheds. Nitrate uptake (as uptake velocity) is strongly dependent on DOM quality (e.g. polyphenolics), ambient dissolved inorganic nitrogen (DIN), and DOC to DIN ratios. Our observations and experiments suggest that a decade-long pulse of inorganic nitrogen and a reduction of DOC export occur following wildfires in streams draining the CSP. Increased fire frequency in the region is thus likely to both decrease DOM and increase nitrate delivery to the main stem Yenisei River, and ultimately the Arctic Ocean, in the coming decades. Dataset Arctic Arctic Ocean Climate change Unknown Arctic Arctic Ocean Yenisei River ENVELOPE(84.738,84.738,69.718,69.718) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
dataone:urn:node:HYDROSHARE |
language |
unknown |
topic |
DOM forest fires Arctic biogeochemistry NO3 streams DOC |
spellingShingle |
DOM forest fires Arctic biogeochemistry NO3 streams DOC Bianca Rodriguez-Cardona Ashley A. Coble Adam Wymore Roman Kolosov David C. Podgorski Phoebe Zito Robert G.M. Spencer Anatoly S. Prokushkin William McDowell Wildfires lead to decreased carbon and increased nitrogen concentrations in upland arctic streams |
topic_facet |
DOM forest fires Arctic biogeochemistry NO3 streams DOC |
description |
The Central Siberian Plateau (CSP) is undergoing rapid climate change that has resulted in increased frequency of forest fires and subsequent alteration of watershed carbon and nutrient dynamics. Across a watershed chronosequence (3 to >100 years since wildfire) we quantified the effects of fire on quantity and composition of dissolved organic matter composition (DOM), stream water nutrients concentrations, as well as in-stream nutrient uptake. Wildfires increased concentrations of nitrate for a decade, while decreasing concentrations of dissolved organic carbon and nitrogen (DOC and DON) and aliphatic DOM contribution for five decades. These post-wildfire changes in stream DOM result in lower uptake efficiency of in-stream nitrate in recently burned watersheds. Nitrate uptake (as uptake velocity) is strongly dependent on DOM quality (e.g. polyphenolics), ambient dissolved inorganic nitrogen (DIN), and DOC to DIN ratios. Our observations and experiments suggest that a decade-long pulse of inorganic nitrogen and a reduction of DOC export occur following wildfires in streams draining the CSP. Increased fire frequency in the region is thus likely to both decrease DOM and increase nitrate delivery to the main stem Yenisei River, and ultimately the Arctic Ocean, in the coming decades. |
format |
Dataset |
author |
Bianca Rodriguez-Cardona Ashley A. Coble Adam Wymore Roman Kolosov David C. Podgorski Phoebe Zito Robert G.M. Spencer Anatoly S. Prokushkin William McDowell |
author_facet |
Bianca Rodriguez-Cardona Ashley A. Coble Adam Wymore Roman Kolosov David C. Podgorski Phoebe Zito Robert G.M. Spencer Anatoly S. Prokushkin William McDowell |
author_sort |
Bianca Rodriguez-Cardona |
title |
Wildfires lead to decreased carbon and increased nitrogen concentrations in upland arctic streams |
title_short |
Wildfires lead to decreased carbon and increased nitrogen concentrations in upland arctic streams |
title_full |
Wildfires lead to decreased carbon and increased nitrogen concentrations in upland arctic streams |
title_fullStr |
Wildfires lead to decreased carbon and increased nitrogen concentrations in upland arctic streams |
title_full_unstemmed |
Wildfires lead to decreased carbon and increased nitrogen concentrations in upland arctic streams |
title_sort |
wildfires lead to decreased carbon and increased nitrogen concentrations in upland arctic streams |
publishDate |
2019 |
url |
https://search.dataone.org/view/sha256:8e503ee9e96effaab6fc9d52bfc9775218c70e5c894ac8ffb7dbfec5768bbd78 |
op_coverage |
BEGINDATE: 2011-06-04T00:00:00Z ENDDATE: 2018-07-15T00:00:00Z |
long_lat |
ENVELOPE(84.738,84.738,69.718,69.718) |
geographic |
Arctic Arctic Ocean Yenisei River |
geographic_facet |
Arctic Arctic Ocean Yenisei River |
genre |
Arctic Arctic Ocean Climate change |
genre_facet |
Arctic Arctic Ocean Climate change |
_version_ |
1811920488316796928 |