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...
Published in: | Polar Research |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Norwegian Polar Institute
2016
|
Subjects: | |
Online Access: | https://doi.org/10.3402/polar.v35.24571 https://doaj.org/article/9c2f46d4bf23414d8b2338c0152661bc |
id |
fttriple:oai:gotriple.eu:oai:doaj.org/article:9c2f46d4bf23414d8b2338c0152661bc |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:oai:doaj.org/article:9c2f46d4bf23414d8b2338c0152661bc 2023-05-15T14:51:55+02:00 Variation in summer nitrogen and phosphorus uptake among Siberian headwater streams John D. Schade Erin C. Seybold Travis Drake Seth Spawn William V. Sobczak Karen E. Frey Robert M. Holmes Nikita Zimov 2016-06-01 https://doi.org/10.3402/polar.v35.24571 https://doaj.org/article/9c2f46d4bf23414d8b2338c0152661bc en eng Norwegian Polar Institute 1751-8369 doi:10.3402/polar.v35.24571 https://doaj.org/article/9c2f46d4bf23414d8b2338c0152661bc undefined Polar Research, Vol 35, Iss 0, Pp 1-10 (2016) Arctic streams nutrient uptake hydrologic transient storage phosphorus sorption coupled N and P cycling envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2016 fttriple https://doi.org/10.3402/polar.v35.24571 2023-01-22T19:12:00Z 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. Article in Journal/Newspaper Arctic kolyma river permafrost Polar Research Unknown Arctic Kolyma ENVELOPE(161.000,161.000,69.500,69.500) Polar Research 35 1 24571 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Arctic streams nutrient uptake hydrologic transient storage phosphorus sorption coupled N and P cycling envir geo |
spellingShingle |
Arctic streams nutrient uptake hydrologic transient storage phosphorus sorption coupled N and P cycling envir geo John D. Schade Erin C. Seybold Travis Drake Seth Spawn William V. Sobczak Karen E. Frey Robert M. Holmes Nikita Zimov 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 envir geo |
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. |
format |
Article in Journal/Newspaper |
author |
John D. Schade Erin C. Seybold Travis Drake Seth Spawn William V. Sobczak Karen E. Frey Robert M. Holmes Nikita Zimov |
author_facet |
John D. Schade Erin C. Seybold Travis Drake Seth Spawn William V. Sobczak Karen E. Frey Robert M. Holmes Nikita Zimov |
author_sort |
John D. Schade |
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://doi.org/10.3402/polar.v35.24571 https://doaj.org/article/9c2f46d4bf23414d8b2338c0152661bc |
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, Iss 0, Pp 1-10 (2016) |
op_relation |
1751-8369 doi:10.3402/polar.v35.24571 https://doaj.org/article/9c2f46d4bf23414d8b2338c0152661bc |
op_rights |
undefined |
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_ |
1766323056220831744 |