Riparian zone control on base cation concentration in boreal streams
Riparian zones (RZ) are a major factor controlling water chemistry in forest streams. Base cations' (BC) concentrations, fluxes, and cycling in the RZ merit attention because a changing climate and increased forest harvesting could have negative consequences, including re-acidification, for bor...
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ftdoajarticles:oai:doaj.org/article:2b1d547970a44ba299ded0c7c896b71d 2023-05-15T17:44:54+02:00 Riparian zone control on base cation concentration in boreal streams J. L. J. Ledesma T. Grabs M. N. Futter K. H. Bishop H. Laudon S. J. Köhler 2013-06-01T00:00:00Z https://doi.org/10.5194/bg-10-3849-2013 https://doaj.org/article/2b1d547970a44ba299ded0c7c896b71d EN eng Copernicus Publications http://www.biogeosciences.net/10/3849/2013/bg-10-3849-2013.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-10-3849-2013 1726-4170 1726-4189 https://doaj.org/article/2b1d547970a44ba299ded0c7c896b71d Biogeosciences, Vol 10, Iss 6, Pp 3849-3868 (2013) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2013 ftdoajarticles https://doi.org/10.5194/bg-10-3849-2013 2022-12-31T13:54:14Z Riparian zones (RZ) are a major factor controlling water chemistry in forest streams. Base cations' (BC) concentrations, fluxes, and cycling in the RZ merit attention because a changing climate and increased forest harvesting could have negative consequences, including re-acidification, for boreal surface waters. We present a two-year study of BC and silica (Si) flow-weighted concentrations from 13 RZ and 14 streams in different landscape elements of a boreal catchment in northern Sweden. The spatial variation in BC and Si dynamics in both RZ and streams was explained by differences in landscape element type, with highest concentrations in silty sediments and lowest concentrations in peat-dominated wetland areas. Temporal stability in BC and Si concentrations in riparian soil water, remarkably stable Mg/Ca ratios, and homogeneous mineralogy suggest that patterns found in the RZ are a result of a distinct mineralogical upslope signal in groundwater. Stream water Mg/Ca ratios indicate that the signal is subsequently maintained in the streams. Flow-weighted concentrations of Ca, Mg, and Na in headwater streams were represented by the corresponding concentrations in the RZ, which were estimated using the Riparian Flow-Concentration Integration Model (RIM) approach. Stream and RZ flow-weighted concentrations differed for K and Si, suggesting a stronger biogeochemical influence on these elements, including K recirculation by vegetation and retention of Si within the RZ. Potential increases in groundwater levels linked to forest harvesting or changes in precipitation regimes would tend to reduce BC concentrations from RZ to streams, potentially leading to episodic acidification. Article in Journal/Newspaper Northern Sweden Directory of Open Access Journals: DOAJ Articles Biogeosciences 10 6 3849 3868 |
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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 J. L. J. Ledesma T. Grabs M. N. Futter K. H. Bishop H. Laudon S. J. Köhler Riparian zone control on base cation concentration in boreal streams |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Riparian zones (RZ) are a major factor controlling water chemistry in forest streams. Base cations' (BC) concentrations, fluxes, and cycling in the RZ merit attention because a changing climate and increased forest harvesting could have negative consequences, including re-acidification, for boreal surface waters. We present a two-year study of BC and silica (Si) flow-weighted concentrations from 13 RZ and 14 streams in different landscape elements of a boreal catchment in northern Sweden. The spatial variation in BC and Si dynamics in both RZ and streams was explained by differences in landscape element type, with highest concentrations in silty sediments and lowest concentrations in peat-dominated wetland areas. Temporal stability in BC and Si concentrations in riparian soil water, remarkably stable Mg/Ca ratios, and homogeneous mineralogy suggest that patterns found in the RZ are a result of a distinct mineralogical upslope signal in groundwater. Stream water Mg/Ca ratios indicate that the signal is subsequently maintained in the streams. Flow-weighted concentrations of Ca, Mg, and Na in headwater streams were represented by the corresponding concentrations in the RZ, which were estimated using the Riparian Flow-Concentration Integration Model (RIM) approach. Stream and RZ flow-weighted concentrations differed for K and Si, suggesting a stronger biogeochemical influence on these elements, including K recirculation by vegetation and retention of Si within the RZ. Potential increases in groundwater levels linked to forest harvesting or changes in precipitation regimes would tend to reduce BC concentrations from RZ to streams, potentially leading to episodic acidification. |
format |
Article in Journal/Newspaper |
author |
J. L. J. Ledesma T. Grabs M. N. Futter K. H. Bishop H. Laudon S. J. Köhler |
author_facet |
J. L. J. Ledesma T. Grabs M. N. Futter K. H. Bishop H. Laudon S. J. Köhler |
author_sort |
J. L. J. Ledesma |
title |
Riparian zone control on base cation concentration in boreal streams |
title_short |
Riparian zone control on base cation concentration in boreal streams |
title_full |
Riparian zone control on base cation concentration in boreal streams |
title_fullStr |
Riparian zone control on base cation concentration in boreal streams |
title_full_unstemmed |
Riparian zone control on base cation concentration in boreal streams |
title_sort |
riparian zone control on base cation concentration in boreal streams |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/bg-10-3849-2013 https://doaj.org/article/2b1d547970a44ba299ded0c7c896b71d |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
Biogeosciences, Vol 10, Iss 6, Pp 3849-3868 (2013) |
op_relation |
http://www.biogeosciences.net/10/3849/2013/bg-10-3849-2013.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-10-3849-2013 1726-4170 1726-4189 https://doaj.org/article/2b1d547970a44ba299ded0c7c896b71d |
op_doi |
https://doi.org/10.5194/bg-10-3849-2013 |
container_title |
Biogeosciences |
container_volume |
10 |
container_issue |
6 |
container_start_page |
3849 |
op_container_end_page |
3868 |
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1766147199660457984 |