Element Redistribution along Hydraulic and Redox Gradients of Low-Centered Polygons, Lena Delta, Northern Siberia
Wetland soils affected by permafrost are extensive in subarctic and arctic tundra. However, this fact does not imply these soils have been sufficiently investigated. In particular, studies of element translocation processes are scarce. This study was conducted (i) to determine the relationship betwe...
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ftpubman:oai:pure.mpg.de:item_2058530 2023-08-20T04:04:40+02:00 Element Redistribution along Hydraulic and Redox Gradients of Low-Centered Polygons, Lena Delta, Northern Siberia Fiedler, S. Wagner, D. Kutzbach, L. Pfeiffer, E. 2004 http://hdl.handle.net/11858/00-001M-0000-0023-E156-1 eng eng info:eu-repo/semantics/altIdentifier/doi/10.2136/sssaj2004.1002 http://hdl.handle.net/11858/00-001M-0000-0023-E156-1 Soil Science Society of America Journal info:eu-repo/semantics/article 2004 ftpubman https://doi.org/10.2136/sssaj2004.1002 2023-08-01T22:03:05Z Wetland soils affected by permafrost are extensive in subarctic and arctic tundra. However, this fact does not imply these soils have been sufficiently investigated. In particular, studies of element translocation processes are scarce. This study was conducted (i) to determine the relationship between water and redox regimes in wetland soils in the Siberian tundra, and (ii) to investigate their influence on the distribution of redox sensitive and associate elements (Mn, Fe, P). Major geomorphic units were chosen (microhigh, polygon rim and slope; microlow, polygon center) from two low-centered polygons in the Lena Delta. Within polygons, redox potential, permafrost, and water level were measured during summer in 1999 and 2000 and (related) compared with element distribution. Manganese, Fe, and P accumulations were preferentially observed in aerobic microhighs. Anaerobic conditions in the microlows lead to a mobilization of Mn, Fe, and P. The elements migrate via water and are immobilized at the microhigh, which acts as an oxidative barrier. The element pattern, indicating an upward flux via water along redox gradients, is explained by higher evapotranspiration from soils and vegetation of the microhighs (Typic Aquiturbel) compared with soils and vegetation of the microlows (Typic Historthel). However, in further research this upward transport should be validated using labeled elements. Article in Journal/Newspaper Arctic lena delta permafrost Subarctic Tundra Siberia Max Planck Society: MPG.PuRe Arctic Soil Science Society of America Journal 68 3 1002 1011 |
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Max Planck Society: MPG.PuRe |
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ftpubman |
language |
English |
description |
Wetland soils affected by permafrost are extensive in subarctic and arctic tundra. However, this fact does not imply these soils have been sufficiently investigated. In particular, studies of element translocation processes are scarce. This study was conducted (i) to determine the relationship between water and redox regimes in wetland soils in the Siberian tundra, and (ii) to investigate their influence on the distribution of redox sensitive and associate elements (Mn, Fe, P). Major geomorphic units were chosen (microhigh, polygon rim and slope; microlow, polygon center) from two low-centered polygons in the Lena Delta. Within polygons, redox potential, permafrost, and water level were measured during summer in 1999 and 2000 and (related) compared with element distribution. Manganese, Fe, and P accumulations were preferentially observed in aerobic microhighs. Anaerobic conditions in the microlows lead to a mobilization of Mn, Fe, and P. The elements migrate via water and are immobilized at the microhigh, which acts as an oxidative barrier. The element pattern, indicating an upward flux via water along redox gradients, is explained by higher evapotranspiration from soils and vegetation of the microhighs (Typic Aquiturbel) compared with soils and vegetation of the microlows (Typic Historthel). However, in further research this upward transport should be validated using labeled elements. |
format |
Article in Journal/Newspaper |
author |
Fiedler, S. Wagner, D. Kutzbach, L. Pfeiffer, E. |
spellingShingle |
Fiedler, S. Wagner, D. Kutzbach, L. Pfeiffer, E. Element Redistribution along Hydraulic and Redox Gradients of Low-Centered Polygons, Lena Delta, Northern Siberia |
author_facet |
Fiedler, S. Wagner, D. Kutzbach, L. Pfeiffer, E. |
author_sort |
Fiedler, S. |
title |
Element Redistribution along Hydraulic and Redox Gradients of Low-Centered Polygons, Lena Delta, Northern Siberia |
title_short |
Element Redistribution along Hydraulic and Redox Gradients of Low-Centered Polygons, Lena Delta, Northern Siberia |
title_full |
Element Redistribution along Hydraulic and Redox Gradients of Low-Centered Polygons, Lena Delta, Northern Siberia |
title_fullStr |
Element Redistribution along Hydraulic and Redox Gradients of Low-Centered Polygons, Lena Delta, Northern Siberia |
title_full_unstemmed |
Element Redistribution along Hydraulic and Redox Gradients of Low-Centered Polygons, Lena Delta, Northern Siberia |
title_sort |
element redistribution along hydraulic and redox gradients of low-centered polygons, lena delta, northern siberia |
publishDate |
2004 |
url |
http://hdl.handle.net/11858/00-001M-0000-0023-E156-1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic lena delta permafrost Subarctic Tundra Siberia |
genre_facet |
Arctic lena delta permafrost Subarctic Tundra Siberia |
op_source |
Soil Science Society of America Journal |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.2136/sssaj2004.1002 http://hdl.handle.net/11858/00-001M-0000-0023-E156-1 |
op_doi |
https://doi.org/10.2136/sssaj2004.1002 |
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Soil Science Society of America Journal |
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68 |
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3 |
container_start_page |
1002 |
op_container_end_page |
1011 |
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1774715042658254848 |