Variation in summer nitrogen and phosphorus uptake among Siberian headwater streams
Arctic streams are likely to receive increased inputs of dissolved nutrients and organic matter from thawing permafrost as climate warms. Documenting how Arctic streams process inorganic nutrients is necessary to understand mechanisms that regulate watershed fluxes of permafrost-derived materials to...
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Norwegian Polar Institute
2016
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ftjpolarres:oai:journals.openacademia.net:article/3274 2024-09-09T19:20:52+00:00 Variation in summer nitrogen and phosphorus uptake among Siberian headwater streams Schade, John D. Seybold, Erin C. Drake, Travis Spawn, Seth Sobczak, William V. Frey, Karen E. Holmes, Robert M. Zimov, Nikita 2016-06-06 application/pdf text/html application/epub+zip application/xml https://polarresearch.net/index.php/polar/article/view/3274 https://doi.org/10.3402/polar.v35.24571 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/3274/8778 https://polarresearch.net/index.php/polar/article/view/3274/8779 https://polarresearch.net/index.php/polar/article/view/3274/8780 https://polarresearch.net/index.php/polar/article/view/3274/8781 https://polarresearch.net/index.php/polar/article/view/3274/8786 https://polarresearch.net/index.php/polar/article/view/3274 doi:10.3402/polar.v35.24571 Polar Research; Vol 35 (2016) 1751-8369 Arctic streams nutrient uptake hydrologic transient storage phosphorus sorption coupled N and P cycling info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2016 ftjpolarres https://doi.org/10.3402/polar.v35.24571 2024-06-20T23:33:17Z Arctic streams are likely to receive increased inputs of dissolved nutrients and organic matter from thawing permafrost as climate warms. Documenting how Arctic streams process inorganic nutrients is necessary to understand mechanisms that regulate watershed fluxes of permafrost-derived materials to downstream ecosystems. We report on summer nitrogen (N) and phosphorus (P) uptake in streams draining upland soils from the Pleistocene, and lowland floodplain soils from the Holocene, in Siberia’s Kolyma River watershed. Uptake of N and P differed between upland and floodplain streams, suggesting topographic variation in nutrient limitation. In floodplain streams, P uptake rate and uptake velocity were higher than N, while upland streams had similar values for all N and P uptake metrics. Phosphorus uptake velocity and size of the transient hydrologic storage zone were negatively related across all study streams, indicating strong influence of hydrologic processes on nutrient fluxes. Physical sorption of P was higher in floodplain stream sediments relative to upland stream sediments, suggesting more physically driven uptake in floodplain streams and higher biological activity in upland streams. Overall, these results demonstrate that high-latitude headwater streams actively retain N and P during summer base flows; however, floodplain and upland streams varied substantially in N and P uptake and may respond differently to inorganic nutrient and organic matter inputs. Our results highlight the need for a comprehensive assessment of N and P uptake and retention in Arctic streams in order to fully understand the impact of permafrost-derived materials on ecosystem processes, and their fate in continental drainage networks.Keywords: Arctic streams; nutrient uptake; hydrologic transient storage; phosphorus sorption; coupled N and P cycling.(Published: 6 June 2016)To access the supplementary material for this article, please see the supplementary files in the column to the right (under Article Tools).Citation: Polar Research ... Article in Journal/Newspaper Arctic kolyma river permafrost Polar Research Polar Research Arctic Kolyma ENVELOPE(161.000,161.000,69.500,69.500) Polar Research 35 1 24571 |
institution |
Open Polar |
collection |
Polar Research |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Arctic streams nutrient uptake hydrologic transient storage phosphorus sorption coupled N and P cycling |
spellingShingle |
Arctic streams nutrient uptake hydrologic transient storage phosphorus sorption coupled N and P cycling Schade, John D. Seybold, Erin C. Drake, Travis Spawn, Seth Sobczak, William V. Frey, Karen E. Holmes, Robert M. Zimov, Nikita Variation in summer nitrogen and phosphorus uptake among Siberian headwater streams |
topic_facet |
Arctic streams nutrient uptake hydrologic transient storage phosphorus sorption coupled N and P cycling |
description |
Arctic streams are likely to receive increased inputs of dissolved nutrients and organic matter from thawing permafrost as climate warms. Documenting how Arctic streams process inorganic nutrients is necessary to understand mechanisms that regulate watershed fluxes of permafrost-derived materials to downstream ecosystems. We report on summer nitrogen (N) and phosphorus (P) uptake in streams draining upland soils from the Pleistocene, and lowland floodplain soils from the Holocene, in Siberia’s Kolyma River watershed. Uptake of N and P differed between upland and floodplain streams, suggesting topographic variation in nutrient limitation. In floodplain streams, P uptake rate and uptake velocity were higher than N, while upland streams had similar values for all N and P uptake metrics. Phosphorus uptake velocity and size of the transient hydrologic storage zone were negatively related across all study streams, indicating strong influence of hydrologic processes on nutrient fluxes. Physical sorption of P was higher in floodplain stream sediments relative to upland stream sediments, suggesting more physically driven uptake in floodplain streams and higher biological activity in upland streams. Overall, these results demonstrate that high-latitude headwater streams actively retain N and P during summer base flows; however, floodplain and upland streams varied substantially in N and P uptake and may respond differently to inorganic nutrient and organic matter inputs. Our results highlight the need for a comprehensive assessment of N and P uptake and retention in Arctic streams in order to fully understand the impact of permafrost-derived materials on ecosystem processes, and their fate in continental drainage networks.Keywords: Arctic streams; nutrient uptake; hydrologic transient storage; phosphorus sorption; coupled N and P cycling.(Published: 6 June 2016)To access the supplementary material for this article, please see the supplementary files in the column to the right (under Article Tools).Citation: Polar Research ... |
format |
Article in Journal/Newspaper |
author |
Schade, John D. Seybold, Erin C. Drake, Travis Spawn, Seth Sobczak, William V. Frey, Karen E. Holmes, Robert M. Zimov, Nikita |
author_facet |
Schade, John D. Seybold, Erin C. Drake, Travis Spawn, Seth Sobczak, William V. Frey, Karen E. Holmes, Robert M. Zimov, Nikita |
author_sort |
Schade, John D. |
title |
Variation in summer nitrogen and phosphorus uptake among Siberian headwater streams |
title_short |
Variation in summer nitrogen and phosphorus uptake among Siberian headwater streams |
title_full |
Variation in summer nitrogen and phosphorus uptake among Siberian headwater streams |
title_fullStr |
Variation in summer nitrogen and phosphorus uptake among Siberian headwater streams |
title_full_unstemmed |
Variation in summer nitrogen and phosphorus uptake among Siberian headwater streams |
title_sort |
variation in summer nitrogen and phosphorus uptake among siberian headwater streams |
publisher |
Norwegian Polar Institute |
publishDate |
2016 |
url |
https://polarresearch.net/index.php/polar/article/view/3274 https://doi.org/10.3402/polar.v35.24571 |
long_lat |
ENVELOPE(161.000,161.000,69.500,69.500) |
geographic |
Arctic Kolyma |
geographic_facet |
Arctic Kolyma |
genre |
Arctic kolyma river permafrost Polar Research |
genre_facet |
Arctic kolyma river permafrost Polar Research |
op_source |
Polar Research; Vol 35 (2016) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/3274/8778 https://polarresearch.net/index.php/polar/article/view/3274/8779 https://polarresearch.net/index.php/polar/article/view/3274/8780 https://polarresearch.net/index.php/polar/article/view/3274/8781 https://polarresearch.net/index.php/polar/article/view/3274/8786 https://polarresearch.net/index.php/polar/article/view/3274 doi:10.3402/polar.v35.24571 |
op_doi |
https://doi.org/10.3402/polar.v35.24571 |
container_title |
Polar Research |
container_volume |
35 |
container_issue |
1 |
container_start_page |
24571 |
_version_ |
1809761066264035328 |