From soil water to surface water – how the riparian zone controls element transport from a boreal forest to a stream
Boreal headwaters are often lined by strips of highly organic soils, which are the last terrestrial environment to leave an imprint on discharging groundwater before it enters a stream. Because these riparian soils are so different from the Podzol soils that dominate much of the boreal landscape, th...
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ftdoajarticles:oai:doaj.org/article:92f2fc21442e42609a360635e512a39b 2023-05-15T17:45:09+02:00 From soil water to surface water – how the riparian zone controls element transport from a boreal forest to a stream F. Lidman Å. Boily H. Laudon S. J. Köhler 2017-06-01T00:00:00Z https://doi.org/10.5194/bg-14-3001-2017 https://doaj.org/article/92f2fc21442e42609a360635e512a39b EN eng Copernicus Publications http://www.biogeosciences.net/14/3001/2017/bg-14-3001-2017.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-14-3001-2017 1726-4170 1726-4189 https://doaj.org/article/92f2fc21442e42609a360635e512a39b Biogeosciences, Vol 14, Pp 3001-3014 (2017) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.5194/bg-14-3001-2017 2022-12-31T10:46:58Z Boreal headwaters are often lined by strips of highly organic soils, which are the last terrestrial environment to leave an imprint on discharging groundwater before it enters a stream. Because these riparian soils are so different from the Podzol soils that dominate much of the boreal landscape, they are known to have a major impact on the biogeochemistry of important elements such as C, N, P and Fe and the transfer of these elements from terrestrial to aquatic ecosystems. For most elements, however, the role of the riparian zone has remained unclear, although it should be expected that the mobility of many elements is affected by changes in, for example, pH, redox potential and concentration of organic carbon as they are transported through the riparian zone. Therefore, soil water and groundwater was sampled at different depths along a 22 m hillslope transect in the Krycklan catchment in northern Sweden using soil lysimeters and analysed for a large number of major and trace elements (Al, As, B, Ba, Ca, Cd, Cl, Co, Cr, Cs, Cu, Fe, K, La, Li, Mg, Mn, Na, Ni, Pb, Rb, Se, Si, Sr, Th, Ti, U, V, Zn, Zr) and other parameters such as sulfate and total organic carbon (TOC). The results showed that the concentrations of most investigated elements increased substantially (up to 60 times) as the water flowed from the uphill mineral soils and into the riparian zone, largely as a result of higher TOC concentrations. The stream water concentrations of these elements were typically somewhat lower than in the riparian zone, but still considerably higher than in the uphill mineral soils, which suggests that riparian soils have a decisive impact on the water quality of boreal streams. The degree of enrichment in the riparian zone for different elements could be linked to the affinity for organic matter, indicating that the pattern with strongly elevated concentrations in riparian soils is typical for organophilic substances. One likely explanation is that the solubility of many organophilic elements increases as a result of the ... Article in Journal/Newspaper Northern Sweden Directory of Open Access Journals: DOAJ Articles Biogeosciences 14 12 3001 3014 |
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ftdoajarticles |
language |
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topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
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Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 F. Lidman Å. Boily H. Laudon S. J. Köhler From soil water to surface water – how the riparian zone controls element transport from a boreal forest to a stream |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Boreal headwaters are often lined by strips of highly organic soils, which are the last terrestrial environment to leave an imprint on discharging groundwater before it enters a stream. Because these riparian soils are so different from the Podzol soils that dominate much of the boreal landscape, they are known to have a major impact on the biogeochemistry of important elements such as C, N, P and Fe and the transfer of these elements from terrestrial to aquatic ecosystems. For most elements, however, the role of the riparian zone has remained unclear, although it should be expected that the mobility of many elements is affected by changes in, for example, pH, redox potential and concentration of organic carbon as they are transported through the riparian zone. Therefore, soil water and groundwater was sampled at different depths along a 22 m hillslope transect in the Krycklan catchment in northern Sweden using soil lysimeters and analysed for a large number of major and trace elements (Al, As, B, Ba, Ca, Cd, Cl, Co, Cr, Cs, Cu, Fe, K, La, Li, Mg, Mn, Na, Ni, Pb, Rb, Se, Si, Sr, Th, Ti, U, V, Zn, Zr) and other parameters such as sulfate and total organic carbon (TOC). The results showed that the concentrations of most investigated elements increased substantially (up to 60 times) as the water flowed from the uphill mineral soils and into the riparian zone, largely as a result of higher TOC concentrations. The stream water concentrations of these elements were typically somewhat lower than in the riparian zone, but still considerably higher than in the uphill mineral soils, which suggests that riparian soils have a decisive impact on the water quality of boreal streams. The degree of enrichment in the riparian zone for different elements could be linked to the affinity for organic matter, indicating that the pattern with strongly elevated concentrations in riparian soils is typical for organophilic substances. One likely explanation is that the solubility of many organophilic elements increases as a result of the ... |
format |
Article in Journal/Newspaper |
author |
F. Lidman Å. Boily H. Laudon S. J. Köhler |
author_facet |
F. Lidman Å. Boily H. Laudon S. J. Köhler |
author_sort |
F. Lidman |
title |
From soil water to surface water – how the riparian zone controls element transport from a boreal forest to a stream |
title_short |
From soil water to surface water – how the riparian zone controls element transport from a boreal forest to a stream |
title_full |
From soil water to surface water – how the riparian zone controls element transport from a boreal forest to a stream |
title_fullStr |
From soil water to surface water – how the riparian zone controls element transport from a boreal forest to a stream |
title_full_unstemmed |
From soil water to surface water – how the riparian zone controls element transport from a boreal forest to a stream |
title_sort |
from soil water to surface water – how the riparian zone controls element transport from a boreal forest to a stream |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/bg-14-3001-2017 https://doaj.org/article/92f2fc21442e42609a360635e512a39b |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
Biogeosciences, Vol 14, Pp 3001-3014 (2017) |
op_relation |
http://www.biogeosciences.net/14/3001/2017/bg-14-3001-2017.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-14-3001-2017 1726-4170 1726-4189 https://doaj.org/article/92f2fc21442e42609a360635e512a39b |
op_doi |
https://doi.org/10.5194/bg-14-3001-2017 |
container_title |
Biogeosciences |
container_volume |
14 |
container_issue |
12 |
container_start_page |
3001 |
op_container_end_page |
3014 |
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1766147935850987520 |