Current Browning of Surface Waters Will Be Further Promoted by Wetter Climate
Heleen A. de Wit,Salar Valinia,Gesa A. Weyhenmeyer,Martyn N. Futter,Pirkko Kortelainen,Kari Austnes,Dag O. Hessen,Antti Räike,Hjalmar Laudon,Jussi Vuorenmaa +9 more
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In this paper, the authors show that positive trends in dissolved organic carbon (OC) concentrations in 474 streams, lakes, and rivers in boreal and subarctic ecosystems in Norway, Sweden, and Finland between 1990 and 2013 are surprisingly constant across climatic gradients and catchment sizes.Abstract:
Browning of surface waters because of increasing terrestrial dissolved organic carbon (OC) concentrations is a concern for drinking water providers and can impact land carbon storage. We show that positive trends in OC in 474 streams, lakes, and rivers in boreal and subarctic ecosystems in Norway, Sweden, and Finland between 1990 and 2013 are surprisingly constant across climatic gradients and catchment sizes (median, +1.4% year–1; interquartile range, +0.8–2.0% year–1), implying that water bodies across the entire landscape are browning. The largest trends (median, +1.7% year–1) were found in regions impacted by strong reductions in sulfur deposition, while subarctic regions showed the least browning (median, +0.8% year–1). In dry regions, precipitation was a strong and positive driver of OC concentrations, declining in strength moving toward high rainfall sites. We estimate that a 10% increase in precipitation will increase mobilization of OC from soils to freshwaters by at least 30%, demonstrating the ...read more
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Global lake responses to climate change
R. Iestyn Woolway,R. Iestyn Woolway,Benjamin M. Kraemer,John D. Lenters,John D. Lenters,John D. Lenters,Christopher J. Merchant,Catherine M. O'Reilly,Sapna Sharma +8 more
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References
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Journal ArticleDOI
Plumbing the Global Carbon Cycle: Integrating Inland Waters into the Terrestrial Carbon Budget
Jonathan J. Cole,Yves T. Prairie,Nina F. Caraco,William H. McDowell,Lars J. Tranvik,Robert G. Striegl,Carlos M. Duarte,Pirkko Kortelainen,John A. Downing,Jack J. Middelburg,John M. Melack +10 more
TL;DR: In this paper, the role of inland water ecosystems in the global carbon cycle has been investigated and it is shown that roughly twice as much C enters inland aquatic systems from land as is exported from land to the sea, roughly equally as inorganic and organic carbon.
Journal ArticleDOI
Lakes and reservoirs as regulators of carbon cycling and climate
Lars J. Tranvik,John A. Downing,James B. Cotner,Steven Loiselle,Robert G. Striegl,Thomas J. Ballatore,Peter J. Dillon,Kerri Finlay,Kenneth Fortino,Lesley B. Knoll,Pirkko Kortelainen,Tiitt Kutser,Soren H. H. Larsen,Isabelle Laurion,Dina M. Leech,S. Leigh McCallister,Diane M. McKnight,John M. Melack,Erin P. Overholt,Jason A. Porter,Yves T. Prairie,William H. Renwick,Fábio Roland,Bradford Sherman,David W. Schindler,Sebastian Sobek,Alain Tremblay,Michael J. Vanni,Antoine M. Verschoor,Eddie von Wachenfeldt,Gesa A. Weyhenmeyer +30 more
TL;DR: The role of lakes in carbon cycling and global climate, examine the mechanisms influencing carbon pools and transformations in lakes, and discuss how the metabolism of carbon in the inland waters is likely to change in response to climate.
Journal ArticleDOI
Dissolved organic carbon trends resulting from changes in atmospheric deposition chemistry.
Don Monteith,John L. Stoddard,Chris D. Evans,Heleen A. de Wit,Martin Forsius,Tore Høgåsen,Anders Wilander,Brit Lisa Skjelkvåle,Dean S. Jeffries,Jussi Vuorenmaa,Bill Keller,Jiri Kopacek,Josef Vesely +12 more
TL;DR: It is shown that rising trends in DOC between 1990 and 2004 can be concisely explained by a simple model based solely on changes in deposition chemistry and catchment acid-sensitivity, and that the rise in DOC is integral to recovery from acidification.
Journal ArticleDOI
Natural organic matter removal by coagulation during drinking water treatment: A review
TL;DR: Most of the NOM can be removed by coagulation, although, the hydrophobic fraction and high molar mass compounds of NOM are removed more efficiently than hydrophilic fraction and the low molarmass compounds.