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Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network

Temnerud, Johan and Düker, Anders and Karlsson, Stephan and Allard, Bert and Köhler, Stephan and Bishop, Kevin (2009). Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network. Hydrology and earth system sciences. 13:9, 1567-1582
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Abstract

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 0.12–78km2, 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. But 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 20 stream reaches, junctions and lakes

Authors/Creators:Temnerud, Johan and Düker, Anders and Karlsson, Stephan and Allard, Bert and Köhler, Stephan and Bishop, Kevin
Title:Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network
Series/Journal:Hydrology and earth system sciences (1607-7938)
Year of publishing :2009
Volume:13
Number:9
Page range:1567-1582
Number of Pages:16
Publisher:Copernicus Publications
Associated Programs and Other Stakeholders:SLU - Environmental assessment > Programme Lakes and watercourses
ISSN:1607-7938
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:M Aquatic sciences and fisheries > M01 Fisheries and aquaculture - General aspects
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 405 Other Agricultural Sciences > Environmental Sciences related to Agriculture and Land-use
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Fish and Aquacultural Science
Agrovoc terms:carbon
Keywords:organic carbon, stream network, landscape, character, SUVA, DOC, C/N
URN:NBN:urn:nbn:se:slu:epsilon-e-2551
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-2551
Additional ID:
Type of IDID
Web of Science (WoS)000270321700003
DOI10.5194/hess-13-1567-2009
ID Code:12057
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:10 Apr 2015 08:15
Metadata Last Modified:15 Apr 2015 17:38

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