Laudon, Hjalmar
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
Research article2017Peer reviewedOpen access
Elemental Composition of Natural Nanoparticles and Fine Colloids in European Forest Stream Waters and Their Role as Phosphorus Carriers
Gottselig, N.; Amelung, W.; Kirchner, J. W.; Bol, R.; Eugster, W.; Granger, S. J.; Hernandez-Crespo, C.; Herrmann, F.; Keizer, J. J.; Korkiakoski, M.; Laudon, H.; Lehner, I.; Lofgren, S.; Lohila, A.; Macleod, C. J. A.; Molder, M.; Mueller, C.; Nasta, P.; Nischwitz, V.; Paul-Limoges, E.;
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Abstract
Biogeochemical cycling of elements largely occurs in dissolved state, but many elements may also be bound to natural nanoparticles (NNP, 1-100 nm) and fine colloids (100-450 nm). We examined the hypothesis that the size and composition of stream water NNP and colloids vary systematically across Europe. To test this hypothesis, 96 stream water samples were simultaneously collected in 26 forested headwater catchments along two transects across Europe. Three size fractions (similar to 1-20 nm, >20-60 nm, and >60 nm) of NNP and fine colloids were identified with Field Flow Fractionation coupled to inductively coupled plasma mass spectrometry and an organic carbon detector. The results showed that NNP and fine colloids constituted between 2 +/- 5% (Si) and 53 +/- 21% (Fe; mean +/- SD) of total element concentrations, indicating a substantial contribution of particles to element transport in these European streams, especially for P and Fe. The particulate contents of Fe, Al, and organic C were correlated to their total element concentrations, but those of particulate Si, Mn, P, and Ca were not. The fine colloidal fractions >60 nm were dominated by clay minerals across all sites. The resulting element patterns of NNP <60 nm changed from North to South Europe from Fe-to Ca-dominated particles, along with associated changes in acidity, forest type, and dominant lithology.
Published in
Global Biogeochemical Cycles
2017, Volume: 31, number: 10, pages: 1592-1607
Publisher: AMER GEOPHYSICAL UNION
Löfgren, Stefan
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
SLU Authors
Associated SLU-program
Future Forests (until Jan 2017)
Lakes and watercourses
Forest
Eutrophication
Acidification
SLU Future Forests
UKÄ Subject classification
Environmental Sciences
Publication identifier
DOI: https://doi.org/10.1002/2017GB005657
Permanent link to this page (URI)
https://res.slu.se/id/publ/92696