Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network
This paper defines landscape-scale patterns in the character of natural organic matter (NOM) and tests for relationships to catchment soil, vegetation and topography. The drainage network of a boreal catchment, subcatchment size 0.12–78 km2, in Northern Sweden was sampled in August 2002 during a per...
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fttriple:oai:gotriple.eu:oai:doaj.org/article:dd421e135c954f5fb929d3c5ea6409a4 2023-05-15T17:44:48+02:00 Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network J. Temnerud A. Düker S. Karlsson B. Allard S. Köhler K. Bishop 2009-09-01 http://www.hydrol-earth-syst-sci.net/13/1567/2009/hess-13-1567-2009.pdf https://doaj.org/article/dd421e135c954f5fb929d3c5ea6409a4 en eng Copernicus Publications 1027-5606 1607-7938 http://www.hydrol-earth-syst-sci.net/13/1567/2009/hess-13-1567-2009.pdf https://doaj.org/article/dd421e135c954f5fb929d3c5ea6409a4 undefined Hydrology and Earth System Sciences, Vol 13, Iss 9, Pp 1567-1582 (2009) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2009 fttriple 2023-01-22T17:53:14Z This paper defines landscape-scale patterns in the character of natural organic matter (NOM) and tests for relationships to catchment soil, vegetation and topography. The drainage network of a boreal catchment, subcatchment size 0.12–78 km2, in Northern Sweden was sampled in August 2002 during a period of stable low water flow. The NOM was characterized with UV/Vis spectroscopy, fluorescence, XAD-8 fractionation (%humic substances), gel permeation chromatography (apparent molecular weight), and elemental composition (C:N). The largest spatial variation was found for C:N, absorbance ratio, and specific visible absorptivity. The lowest variation was in fluorescence index, %humic substances and molecular retention time. The variation in total organic carbon (TOC), iron and aluminium concentration was more than twice that of C:N. Between headwater and downstream sites no significant changes were distinguished in the NOM character. At stream reaches, junctions and lakes little change (<10%) in NOM character was observed. Common factor analysis and partial least squares regression (PLS) revealed that the spatial variation in surface coverage of lakes and mires could explain some of the variation of TOC and NOM character. Our suggestion is that the mosaic of landscape elements (different amounts of water from lakes, forest soil and mires) delivers NOM with varying characteristics to a channel network that mixes conservatively downstream, with possible small changes at some stream reaches, junctions and lakes. Article in Journal/Newspaper Northern Sweden Unknown |
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English |
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envir geo |
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envir geo J. Temnerud A. Düker S. Karlsson B. Allard S. Köhler K. Bishop Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network |
topic_facet |
envir geo |
description |
This paper defines landscape-scale patterns in the character of natural organic matter (NOM) and tests for relationships to catchment soil, vegetation and topography. The drainage network of a boreal catchment, subcatchment size 0.12–78 km2, in Northern Sweden was sampled in August 2002 during a period of stable low water flow. The NOM was characterized with UV/Vis spectroscopy, fluorescence, XAD-8 fractionation (%humic substances), gel permeation chromatography (apparent molecular weight), and elemental composition (C:N). The largest spatial variation was found for C:N, absorbance ratio, and specific visible absorptivity. The lowest variation was in fluorescence index, %humic substances and molecular retention time. The variation in total organic carbon (TOC), iron and aluminium concentration was more than twice that of C:N. Between headwater and downstream sites no significant changes were distinguished in the NOM character. At stream reaches, junctions and lakes little change (<10%) in NOM character was observed. Common factor analysis and partial least squares regression (PLS) revealed that the spatial variation in surface coverage of lakes and mires could explain some of the variation of TOC and NOM character. Our suggestion is that the mosaic of landscape elements (different amounts of water from lakes, forest soil and mires) delivers NOM with varying characteristics to a channel network that mixes conservatively downstream, with possible small changes at some stream reaches, junctions and lakes. |
format |
Article in Journal/Newspaper |
author |
J. Temnerud A. Düker S. Karlsson B. Allard S. Köhler K. Bishop |
author_facet |
J. Temnerud A. Düker S. Karlsson B. Allard S. Köhler K. Bishop |
author_sort |
J. Temnerud |
title |
Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network |
title_short |
Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network |
title_full |
Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network |
title_fullStr |
Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network |
title_full_unstemmed |
Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network |
title_sort |
landscape scale patterns in the character of natural organic matter in a swedish boreal stream network |
publisher |
Copernicus Publications |
publishDate |
2009 |
url |
http://www.hydrol-earth-syst-sci.net/13/1567/2009/hess-13-1567-2009.pdf https://doaj.org/article/dd421e135c954f5fb929d3c5ea6409a4 |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
Hydrology and Earth System Sciences, Vol 13, Iss 9, Pp 1567-1582 (2009) |
op_relation |
1027-5606 1607-7938 http://www.hydrol-earth-syst-sci.net/13/1567/2009/hess-13-1567-2009.pdf https://doaj.org/article/dd421e135c954f5fb929d3c5ea6409a4 |
op_rights |
undefined |
_version_ |
1766147085331070976 |