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BG | Articles | Volume 17, issue 8
Biogeosciences, 17, 2169–2180, 2020
https://doi.org/10.5194/bg-17-2169-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 17, 2169–2180, 2020
https://doi.org/10.5194/bg-17-2169-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 20 Apr 2020

Research article | 20 Apr 2020

Understanding the effects of early degradation on isotopic tracers: implications for sediment source attribution using compound-specific isotope analysis (CSIA)

Pranav Hirave et al.

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Alewell, C., Birkholz, A., Meusburger, K., Schindler Wildhaber, Y., and Mabit, L.: Quantitative sediment source attribution with compound-specific isotope analysis in a C3 plant-dominated catchment (central Switzerland), Biogeosciences, 13, 1587–1596, https://doi.org/10.5194/bg-13-1587-2016, 2016. 
Amblès, A., Jambu, P., Parlanti, E., Joffre, J., and Riffe, C.: Incorporation of natural monoacids from plant residues into an hydromorphic forest podzol, Eur. J. Soil Sci., 45, 175–182, https://doi.org/10.1111/j.1365-2389.1994.tb00499.x, 1994a. 
Amblès, A., Parlanti, E., Jambu, P., Mayoungou, P., and Jacquesy, J.-C.: n-Alkane oxidation in soil, Formation of internal monoalkenes, Geoderma, 64, 111–124, https://doi.org/10.1016/0016-7061(94)90092-2, 1994b. 
Blake, W. H., Ficken, K. J., Taylor, P., Russell, M. A., and Walling, D. E.: Tracing crop-specific sediment sources in agricultural catchments, Geomorphology, 139–140, 322–329, https://doi.org/10.1016/j.geomorph.2011.10.036, 2012. 
Blessing, M., Jochmann, M. A., and Schmidt, T. C.: Pitfalls in compound-specific isotope analysis of environmental samples, Anal. Bioanal. Chem., 390, 591–603, https://doi.org/10.1007/s00216-007-1588-1, 2008. 
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Sediment input into water bodies is a prominent threat to freshwater ecosystems. We tested the stability of tracers employed in freshwater sediment tracing based on compound-specific isotope analysis during early degradation in soil. While bulk δ13C values showed no stability, δ13C values of plant-derived fatty acids and n-alkanes were stably transferred to the soil without soil particle size dependency after an early degradation in organic horizons, thus indicating their suitability as tracers.
Sediment input into water bodies is a prominent threat to freshwater ecosystems. We tested the...
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