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Widespread Increases in Iron Concentration in European and North American Freshwaters

Björnerås, C. (författare)
Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Division aquatic ecology,Department of Biology,Faculty of Science,Lund University, Lund, Sweden
Weyhenmeyer, Gesa A. (författare)
Uppsala universitet,Uppsala University,Limnologi
Evans, C. D. (författare)
Centre for Ecology & Hydrology, Wallingford,Environm Ctr Wales, Bangor, Wales
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Gessner, Mark O. (författare)
Leibniz Institute of Freshwater Ecology and Inland Fisheries,Technical University of Berlin,Leibniz Inst Freshwater Ecol & Inland Fisheries I, Stechlin, Germany; TU Berlin, Berlin, Germany
Grossart, H. P. (författare)
University of Potsdam,Leibniz Institute of Freshwater Ecology and Inland Fisheries,Potsdam Univ, Potsdam, Germany
Kangur, K. (författare)
Estonian University of Life Sciences - EMÜ,Estonian Univ Life Sci, Rannu, Estonia
Kokorite, I. (författare)
University of Latvia,Univ Latvia, Riga, Latvia
Kortelainen, P. (författare)
Finnish Environment Institute,Finnish Environm Inst, Helsinki, Finland
Laudon, Hjalmar (författare)
Sveriges lantbruksuniversitet,Swedish University of Agricultural Sciences,Institutionen för skogens ekologi och skötsel,Department of Forest Ecology and Management,Swedish Univ Agr Sci, Umeå, Sweden
Lehtoranta, J. (författare)
Finnish Environment Institute,Finnish Environm Inst, Helsinki, Finland
Lottig, N. (författare)
University of Wisconsin-Madison,Univ Wisconsin, Madison, USA
Monteith, D. T. (författare)
Centre for Ecology & Hydrology, Wallingford,Lancaster Environm Ctr, Lancaster, England
Nõges, P (författare)
Estonian University of Life Sciences - EMÜ,Estonian Univ Life Sci, Tartu, Estonia
Nõges, T (författare)
Estonian University of Life Sciences - EMÜ,Estonian Univ Life Sci, Tartu, Estonia
Oulehle, F. (författare)
Czech Geological Survey (CGS),Global Change Research Centre of the Czech Academy of Sciences,Czech Geol Survey, Prague, Czech Republic
Riise, G. C. (författare)
Norwegian University of Life Sciences,Norwegian Univ Life Sci NMBU, As, Norway
Rusak, J. A. (författare)
Dorset Environmental Science Centre,Ontario Minist Environm & Climate Change, Dorset, Canada
Räike, A. (författare)
Finnish Environment Institute,Finnish Environm Inst, Helsinki, Finland
Sire, J. (författare)
Latvian Environment, Geology and Meteorology Centre,Latvian Environm Geol & Meteorol Ctr, Riga, Latvia
Kritzberg, E. S. (författare)
Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Division aquatic ecology,Department of Biology,Faculty of Science,Dalhousie Univ, Halifax, Canada,Lund University, Lund, Sweden
Kritzberg, E. S. (författare)
Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Division aquatic ecology,Department of Biology,Faculty of Science
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 (creator_code:org_t)
 
2017
2017
Engelska.
Ingår i: Global Biogeochemical Cycles. - 0886-6236 .- 1944-9224. ; 31:10, s. 1488-1500
Relaterad länk:
http://dx.doi.org/10...
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https://doi.org/10.1...
https://uu.diva-port... (primary) (Raw object)
https://lup.lub.lu.s...
https://doi.org/10.1...
https://res.slu.se/i...
https://urn.kb.se/re...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • Recent reports of increasing iron (Fe) concentrations in freshwaters are of concern, given the fundamental role of Fe in biogeochemical processes. Still, little is known about the frequency and geographical distribution of Fe trends or about the underlying drivers. We analyzed temporal trends of Fe concentrations across 340 water bodies distributed over 10 countries in northern Europe and North America in order to gain a clearer understanding of where, to what extent, and why Fe concentrations are on the rise. We found that Fe concentrations have significantly increased in 28% of sites, and decreased in 4%, with most positive trends located in northern Europe. Regions with rising Fe concentrations tend to coincide with those with organic carbon (OC) increases. Fe and OC increases may not be directly mechanistically linked, but may nevertheless be responding to common regional-scale drivers such as declining sulfur deposition or hydrological changes. A role of hydrological factors was supported by covarying trends in Fe and dissolved silica, as these elements tend to stem from similar soil depths. A positive relationship between Fe increases and conifer cover suggests that changing land use and expanded forestry could have contributed to enhanced Fe export, although increases were also observed in nonforested areas. We conclude that the phenomenon of increasing Fe concentrations is widespread, especially in northern Europe, with potentially significant implications for wider ecosystem biogeochemistry, and for the current browning of freshwaters.

Ämnesord

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Geokemi (hsv//swe)
NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Geochemistry (hsv//eng)
NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)

Nyckelord

Browning
Climate change
Freshwaters
Iron
Trends
browning

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art (ämneskategori)
ref (ämneskategori)

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