Influences of dissolved organic carbon on stream water chemistry in two forested catchments in central Sweden

2010 ◽  
Vol 101 (1-3) ◽  
pp. 229-241 ◽  
Author(s):  
Sara H. Norström ◽  
Jenny L. K. Vestin ◽  
Dan Bylund ◽  
Ulla S. Lundström
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Water Chemistry ◽  
Stream Water ◽  
Forested Catchments ◽  
Stream Water Chemistry

scholarly journals Using official map data on topography, wetlands and vegetation cover for prediction of stream water chemistry in boreal headwater catchments

2009 ◽  
Vol 13 (4) ◽  
pp. 537-549 ◽  
Author(s):  
J.-O. Andersson ◽  
L. Nyberg
Keyword(s):  
Water Chemistry ◽  
Stream Water ◽  
Major Influence ◽  
Strong Correlations ◽  
Topographic Wetness Index ◽  
Forested Catchments ◽  
Stream Water Chemistry ◽  
Doc Concentration ◽  
Si Content ◽  
Map Data

Abstract. A large part of the spatial variation of stream water chemistry can be related to inputs from headwater streams. In order to understand and analyse the dominant processes taking place in small and heterogeneous catchments, accurate data with high spatial and temporal resolution is necessary. In most cases, the quality and resolution of available map data are considered too poor to be used in environmental assessments and modelling of headwater stream chemistry. In this study 18 forested catchments (1–4 km2) were selected within a 120×50 km region in the county of Värmland in western Sweden. The aim was to test if topographic and vegetation variables derived from official datasets were correlated to stream water chemistry, primarily the concentration of dissolved organic carbon (DOC), but also Al, Fe and Si content. GIS was used to analyse the elevation characteristics, generate topographic indices, and calculate the percentage of wetlands and a number of vegetation classes. The results clearly show that topography has a major influence on stream water chemistry. There were strong correlations between mean slope and percentage wetland, percentage wetland and DOC, mean slope and DOC, and a very strong correlation between mean topographic wetness index (TWI) and DOC. The conclusion was that official topographic data, despite uncertain or of low quality and resolution, could be useful in the prediction of headwater DOC-concentration in boreal forested catchments.

scholarly journals Relations between topography, wetlands, vegetation cover and stream water chemistry in boreal headwater catchments in Sweden

2008 ◽  
Vol 5 (3) ◽  
pp. 1191-1226 ◽  
Author(s):  
J.-O. Andersson ◽  
L. Nyberg
Keyword(s):  
Water Chemistry ◽  
Stream Water ◽  
Major Influence ◽  
Temporal Data ◽  
Strong Correlations ◽  
Topographic Wetness Index ◽  
Forested Catchments ◽  
Stream Water Chemistry ◽  
Si Content ◽  
Map Data

Abstract. A large part of the spatial variation of stream water chemistry is found in headwater streams and small catchments. To understand the dominant processes, taking place in small and heterogeneous catchments, spatial and temporal data with high resolution is needed. In most cases available map data has too low quality and resolution to successfully be used in environmental assessments and modelling. In this study 18 forested catchments (1–4 km2) were selected within a 120×50 km area in the county of Värmland in western Sweden. The aim was to test if topographic and vegetation variables derived from official datasets were correlated to stream water chemistry, represented by DOC, Al, Fe and Si content. A GIS was used to analyse the elevation characteristics, generate topographic indices and calculate the percentage of wetlands and a number of vegetation classes. The results clearly show that the topography has a major influence on the occurrence of wetlands, which has a major influence on stream water chemistry. There were very strong correlations between mean slope and percentage wetland, percentage wetland and DOC, mean slope and DOC and mean topographic wetness index and DOC. The conclusion was that official topographic data, despite uncertain or low quality and resolution, could be useful in the prediction of headwater chemistry in boreal forested catchments.

scholarly journals Transboundary air pollution reduction rapidly reflected in stream water chemistry in forested catchment on the sea of Japan coast in central Japan

2021 ◽  
Vol 248 ◽  
pp. 118223
Author(s):  
Hiroyuki Sase ◽  
Tatsuyoshi Saito ◽  
Masaaki Takahashi ◽  
Masayuki Morohashi ◽  
Naoyuki Yamashita ◽  
...  
Keyword(s):  
Air Pollution ◽  
Water Chemistry ◽  
Sea Of Japan ◽  
Stream Water ◽  
Pollution Reduction ◽  
The Sea Of Japan ◽  
Central Japan ◽  
Stream Water Chemistry ◽  
Forested Catchment ◽  
Transboundary Air Pollution

Modelling the long-term response of stream water chemistry to forestry in Galloway, Southwest Scotland

2014 ◽  
Vol 37 ◽  
pp. 396-411 ◽  
Author(s):  
R.C. Helliwell ◽  
J. Aherne ◽  
T.R. Nisbet ◽  
G. MacDougall ◽  
S. Broadmeadow ◽  
...  
Keyword(s):  
Water Chemistry ◽  
Stream Water ◽  
Stream Water Chemistry ◽  
Term Response

Effects of trophic status and wetland morphology, hydroperiod, and water chemistry on mercury concentrations in fish

2000 ◽  
Vol 57 (1) ◽  
pp. 171-180 ◽  
Author(s):  
Joel W Snodgrass ◽  
Charles H Jagoe ◽  
A Lawrence Bryan, Jr. ◽  
Heather A Brant ◽  
J Burger
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Water Chemistry ◽  
Maximum Depth ◽  
Trophic Levels ◽  
Whole Body ◽  
Regression Analyses ◽  
Negative Effects ◽  
Depression Wetlands ◽  
Negative Effect

We sampled fish and selected water chemistry variables (dissolved organic carbon, sulfate, and pH) in nine southeastern depression wetlands to determine relationships among wetland morphology (surface area and maximum depth), hydrology, water chemistry, and bioaccumulation of mercury (Hg) in fishes. We concentrated on three fish species representing the range of trophic levels occupied by fish in southeastern depression wetlands. Whole-body Hg concentrations were lowest in lake chubsucker (Erimyzon sucetta), a benthic detritivore, and highest in redfin pickerel (Esox americanus americanus), a top carnivore. However, variation in Hg concentrations among wetlands was greater than variation among species. Regression analyses indicated that maximum depth and hydroperiod accounted for significant portions of variation among wetlands in standardized lake chubsucker and redfin pickerel Hg concentrations. Maximum depth and dissolved organic carbon had a negative effect on standardized Hg concentrations in mud sunfish (Acantharchus pomotis). Path analysis confirmed the results of regression analyses, with maximum depth and hydroperiod having relatively large direct negative effects on Hg concentrations. Our results suggest that leaching of Hg from sediments during the drying and reflooding cycle and binding of Hg species by dissolved organic carbon in the water column are primary factors controlling the bioavailability of Hg in southeastern depression wetlands.

Trends in hydrometeorological conditions and stream water organic carbon in boreal forested catchments

2009 ◽  
Vol 408 (1) ◽  
pp. 92-101 ◽  
Author(s):  
Sakari Sarkkola ◽  
Harri Koivusalo ◽  
Ari Laurén ◽  
Pirkko Kortelainen ◽  
Tuija Mattsson ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Stream Water ◽  
Forested Catchments ◽  
Hydrometeorological Conditions

scholarly journals Relationship between stream water chemistry and soil freezing in peat mires in Ochiishi, eastern Hokkaido, Japan

2003 ◽  
Vol 65 (4) ◽  
pp. 365-376
Author(s):  
Tsutomu IYOBE ◽  
Akira HARAGUCHI ◽  
Fumihiko NISHIO ◽  
Shun'ichi KOBAYASHI
Keyword(s):  
Water Chemistry ◽  
Stream Water ◽  
Soil Freezing ◽  
Stream Water Chemistry

Initial Effects of Wood Ash Application on the Stream Water Chemistry in a Boreal Catchment in Central Sweden

2011 ◽  
Vol 221 (1-4) ◽  
pp. 123-136 ◽  
Author(s):  
Sara H. Norström ◽  
Dan Bylund ◽  
Jenny L. K. Vestin ◽  
Ulla S. Lundström
Keyword(s):  
Water Chemistry ◽  
Stream Water ◽  
Wood Ash ◽  
Stream Water Chemistry
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