Permafrost Boundary Shift in Western Siberia May Not Modify Dissolved Nutrient Concentrations in Rivers
Identifying the landscape and climate factors that control nutrient export by rivers in high latitude regions is one of the main challenges for understanding the Arctic Ocean response to ongoing climate change. This is especially true for Western Siberian rivers, which are responsible for a signific...
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2017
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-144112 https://doi.org/10.3390/w9120985 |
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ftumeauniv:oai:DiVA.org:umu-144112 2023-10-09T21:48:47+02:00 Permafrost Boundary Shift in Western Siberia May Not Modify Dissolved Nutrient Concentrations in Rivers Vorobyev, Sergey N. Pokrovsky, Oleg S. Serikova, Svetlana Manasypov, Rinat M. Krickov, Ivan V. Shirokova, Liudmila S. Lim, Artem Kolesnichenko, Larisa G. Kirpotin, Sergey N. Karlsson, Jan 2017 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-144112 https://doi.org/10.3390/w9120985 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Water, 2017, 9:12, orcid:0000-0002-2319-8190 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-144112 doi:10.3390/w9120985 ISI:000419225500077 Scopus 2-s2.0-85038208603 info:eu-repo/semantics/openAccess nitrate ammonium phosphorus phosphate river permafrost Siberia Ecology Ekologi Article in journal info:eu-repo/semantics/article text 2017 ftumeauniv https://doi.org/10.3390/w9120985 2023-09-22T14:00:54Z Identifying the landscape and climate factors that control nutrient export by rivers in high latitude regions is one of the main challenges for understanding the Arctic Ocean response to ongoing climate change. This is especially true for Western Siberian rivers, which are responsible for a significant part of freshwater and solutes delivery to the Arctic Ocean and are draining vast permafrost-affected areas most vulnerable to thaw. Forty-nine small- and medium-sized rivers (10-100,000 km(2)) were sampled along a 1700 km long N-S transect including both permafrost-affected and permafrost-free zones of the Western Siberian Lowland (WSL) in June and August 2015. The N, P, dissolved organic and inorganic carbon (DOC and DIC, respectively), particular organic carbon (POC), Si, Ca, K, Fe, and Mn were analyzed to assess the role of environmental parameters, such as temperature, runoff, latitude, permafrost, bogs, lake, and forest coverage on nutrient concentration. The size of the watershed had no influence on nutrient concentrations in the rivers. Bogs and lakes retained nutrients whereas forests supplied P, Si, K, Ca, DIC, and Mn to rivers. The river water temperature was negatively correlated with Si and positively correlated with Fe in permafrost-free rivers. In permafrost-bearing rivers, the decrease in T northward was coupled with significant increases in PO4, P-tot, NH4, pH, DIC, Si, Ca, and Mn. North of the permafrost boundary (61 degrees N), there was no difference in nutrient concentrations among permafrost zones (isolated, sporadic, discontinuous, and continuous). The climate warming in Western Siberia may lead to a permafrost boundary shift northward. Using a substituting space for time scenario, this may decrease or maintain the current levels of N, P, Si, K, Ca, DIC, and DOC concentrations in rivers of continuous permafrost zones compared to the present state. As a result, the export flux of nutrients by the small- and medium-sized rivers of the Western Siberian subarctic to the Arctic Ocean coastal zone ... Article in Journal/Newspaper Arctic Arctic Ocean Climate change permafrost Subarctic Siberia Umeå University: Publications (DiVA) Arctic Arctic Ocean Water 9 12 985 |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
nitrate ammonium phosphorus phosphate river permafrost Siberia Ecology Ekologi |
spellingShingle |
nitrate ammonium phosphorus phosphate river permafrost Siberia Ecology Ekologi Vorobyev, Sergey N. Pokrovsky, Oleg S. Serikova, Svetlana Manasypov, Rinat M. Krickov, Ivan V. Shirokova, Liudmila S. Lim, Artem Kolesnichenko, Larisa G. Kirpotin, Sergey N. Karlsson, Jan Permafrost Boundary Shift in Western Siberia May Not Modify Dissolved Nutrient Concentrations in Rivers |
topic_facet |
nitrate ammonium phosphorus phosphate river permafrost Siberia Ecology Ekologi |
description |
Identifying the landscape and climate factors that control nutrient export by rivers in high latitude regions is one of the main challenges for understanding the Arctic Ocean response to ongoing climate change. This is especially true for Western Siberian rivers, which are responsible for a significant part of freshwater and solutes delivery to the Arctic Ocean and are draining vast permafrost-affected areas most vulnerable to thaw. Forty-nine small- and medium-sized rivers (10-100,000 km(2)) were sampled along a 1700 km long N-S transect including both permafrost-affected and permafrost-free zones of the Western Siberian Lowland (WSL) in June and August 2015. The N, P, dissolved organic and inorganic carbon (DOC and DIC, respectively), particular organic carbon (POC), Si, Ca, K, Fe, and Mn were analyzed to assess the role of environmental parameters, such as temperature, runoff, latitude, permafrost, bogs, lake, and forest coverage on nutrient concentration. The size of the watershed had no influence on nutrient concentrations in the rivers. Bogs and lakes retained nutrients whereas forests supplied P, Si, K, Ca, DIC, and Mn to rivers. The river water temperature was negatively correlated with Si and positively correlated with Fe in permafrost-free rivers. In permafrost-bearing rivers, the decrease in T northward was coupled with significant increases in PO4, P-tot, NH4, pH, DIC, Si, Ca, and Mn. North of the permafrost boundary (61 degrees N), there was no difference in nutrient concentrations among permafrost zones (isolated, sporadic, discontinuous, and continuous). The climate warming in Western Siberia may lead to a permafrost boundary shift northward. Using a substituting space for time scenario, this may decrease or maintain the current levels of N, P, Si, K, Ca, DIC, and DOC concentrations in rivers of continuous permafrost zones compared to the present state. As a result, the export flux of nutrients by the small- and medium-sized rivers of the Western Siberian subarctic to the Arctic Ocean coastal zone ... |
format |
Article in Journal/Newspaper |
author |
Vorobyev, Sergey N. Pokrovsky, Oleg S. Serikova, Svetlana Manasypov, Rinat M. Krickov, Ivan V. Shirokova, Liudmila S. Lim, Artem Kolesnichenko, Larisa G. Kirpotin, Sergey N. Karlsson, Jan |
author_facet |
Vorobyev, Sergey N. Pokrovsky, Oleg S. Serikova, Svetlana Manasypov, Rinat M. Krickov, Ivan V. Shirokova, Liudmila S. Lim, Artem Kolesnichenko, Larisa G. Kirpotin, Sergey N. Karlsson, Jan |
author_sort |
Vorobyev, Sergey N. |
title |
Permafrost Boundary Shift in Western Siberia May Not Modify Dissolved Nutrient Concentrations in Rivers |
title_short |
Permafrost Boundary Shift in Western Siberia May Not Modify Dissolved Nutrient Concentrations in Rivers |
title_full |
Permafrost Boundary Shift in Western Siberia May Not Modify Dissolved Nutrient Concentrations in Rivers |
title_fullStr |
Permafrost Boundary Shift in Western Siberia May Not Modify Dissolved Nutrient Concentrations in Rivers |
title_full_unstemmed |
Permafrost Boundary Shift in Western Siberia May Not Modify Dissolved Nutrient Concentrations in Rivers |
title_sort |
permafrost boundary shift in western siberia may not modify dissolved nutrient concentrations in rivers |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2017 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-144112 https://doi.org/10.3390/w9120985 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Climate change permafrost Subarctic Siberia |
genre_facet |
Arctic Arctic Ocean Climate change permafrost Subarctic Siberia |
op_relation |
Water, 2017, 9:12, orcid:0000-0002-2319-8190 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-144112 doi:10.3390/w9120985 ISI:000419225500077 Scopus 2-s2.0-85038208603 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3390/w9120985 |
container_title |
Water |
container_volume |
9 |
container_issue |
12 |
container_start_page |
985 |
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1779311854166736896 |