First use of a compound-specific stable isotope (CSSI) technique to trace sediment transport in upland forest catchments of Chile

Bravo-Linares, Claudio; Schuller, Paulina; Castillo, Alejandra; Ovando-Fuentealba, Luis; Muñoz-Arcos, Enrique; Alarcón, Oscar Mauricio Castellanos; Santos-Villalobos, Sergio de los; Cardoso, Renan Pereira; Muniz, Marcelo Costa; Anjos, R. M.; Bustamante-Ortega, Ramón; Dercon, Gerd

doi:10.1016/j.scitotenv.2017.09.163

Cited by 36 publications

(23 citation statements)

References 30 publications

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“…Fallout radionuclides have been widely adopted to trace sediment redistribution based on the principles of comparing inventories rather than to apportion sediment source using tracer concentrations (Walling and Quine, 1990). The recent application of biomarkers in fingerprinting studies has potentially improved the capacity to discriminate sources with specific vegetation (Bravo-Linares et al, 2018) or crop types (Mabit et al, 2018), although there remains scope for further testing the environmental behavior and conservation of such tracers.…”

Section: Fingerprint Propertiesmentioning

confidence: 99%

Fingerprinting the sources of water-mobilized sediment threatening agricultural and water resource sustainability: Progress, challenges and prospects in China

Tang

Wen

et al. 2019

Sci. China Earth Sci.

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Sediment source fingerprinting apportions the sources of sediment produced by water erosion by linking sampled sediment mixtures and landscape source materials using diagnostic and conservative fingerprints. Using this approach, the nature and location of active sediment sources across the catchment can be elucidated, generating information which is a key prerequisite for the design and implementation of catchment management strategies. The science of sediment source fingerprinting continues to attract much research globally, but to date, there have been relatively few fingerprinting studies in China. Here, there remain major challenges for the fingerprinting approach arising from the uniqueness of Chinese landscapes, including for instance, the complex land use configuration with highly fragmented or mosaic patches and the highly dynamic land use conversion rates, generating a need to test the physical basis for the discriminatory power and environmental behavior of both traditional and novel tracers. Future research is needed to investigate the applicability of tracer properties in different physiographic settings and to evaluate the potential strategic utility of the approach for supporting the improved management of soil and water sustainability. Here, the strategic availability of independent observation data for different components of catchment sediment budgets and well-maintained research infrastructure for plots, micro-catchments and drainage basins provides immediate opportunity for testing the approach and refining procedures. Such detailed testing across scales would be invaluable for promoting sediment source fingerprinting as both a scientific and management tool for informing soil and water conservation practices in China.

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Section: Fingerprint Propertiesmentioning

confidence: 99%

Fingerprinting the sources of water-mobilized sediment threatening agricultural and water resource sustainability: Progress, challenges and prospects in China

Tang

Wen

et al. 2019

Sci. China Earth Sci.

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“…Before sampling, the litter on the surface was removed with metal spatulas. Each source sample was generated from 5 composite samples taken at the corners and center of a 10 × 10 square, then were placed in a metal bucket and mixed, a subsample of~1 kg was taken into the lab in double plastic bags for further analysis (Bravo-Linares et al 2018).…”

Section: Sample Collectionmentioning

confidence: 99%

“…However, the results showed slight discrepancies in the dates for these actions, showing an increment in the pine signature from 1977 that denoted an impact of the bare soil being affected by erosion from the 1977 up to 1985, when the second plantation occurred and the trees matured and the sediment mobilization became lower (Schuller et al 2013). From 1994 to 2012, the signature of pine has reduced, because the catchment has not been harvested and the canopy and pines needles provide a very good protection from erosion (Bravo-Linares et al 2018;Doerr et al 1998).…”

Section: Cssi Valuesmentioning

confidence: 99%

“…The CSSI sediment tracing method can be applied to a number of biomarkers (fatty acids, n-alkanes, etc.) and different isotopes (δ 13 C and/ or δ 2 H) (Bravo-Linares et al 2018;Brandt et al 2018a;Mabit et al 2018;Upadhayay et al 2017;Cooper et al 2015). The CSSI sediment tracing technique can also be used to reconstruct changes in the contributions of land use sources from sedimentary records by correcting the δ 13 C isotopic values of the fatty acid biomarkers for the Suess effect.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have determined that the CSSI technique using δ 13 C of fatty acids was able to discriminate different types of land use including forested catchments (Bravo-Linares et al 2018;Brandt et al 2018b). However, the reconstruction of historical land uses using combined isotopic techniques has not previously been applied in a production forestry catchment and only in a tropical agricultural catchment (Brandt et al 2018b).…”

Section: Introductionmentioning

confidence: 99%

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Combining Isotopic Techniques to Assess Historical Sediment Delivery in a Forest Catchment in Central Chile

Bravo-Linares

Schuller

Castillo

et al. 2019

J Soil Sci Plant Nutr

Self Cite

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The purpose of this research was to determine the historical evolution of different sources of sediment by land uses in a forest catchment, through the combination of two isotopic techniques: (i) fallout radionuclides (FRNs) for dating sediment cores and (ii) compound-specific stable isotope (CSSI). Ten 30-cm-deep sediment cores (taken in a meander at the outlet of the forest catchment) were used to reconstruct the sediment delivery history for around 67 years before present (BP), i.e., 2012. Five land uses were considered as potential sources in this analysis: forest roads, pine trees, eucalyptus trees, native forest (buffer or riparian zone), and wheat. Forestry activities incremented the sedimentation rate by about 17% compared to wheat production. Results were consistent with the historical land uses in the catchment. The analysis showed an important sediment contribution of farmland used for wheat from 1945 to about 1974 (~20-80%). After the implementation of the public bill, the sediment source changed into the exotic plantations (pine and eucalyptus trees) until present, where harvesting periods were clearly seen as an increment of sediment delivery from the source.

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Quantifying Sediment and Associated Pollutants Sources in Agricultural Catchments Using Isotopic Techniques

Blake,

Taylor,

Muñoz-Arcos

et al. 2024

Tracing the Sources and Fate of Contaminants in Agroecosystems

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First use of a compound-specific stable isotope (CSSI) technique to trace sediment transport in upland forest catchments of Chile

Cited by 36 publications

References 30 publications

Fingerprinting the sources of water-mobilized sediment threatening agricultural and water resource sustainability: Progress, challenges and prospects in China

Fingerprinting the sources of water-mobilized sediment threatening agricultural and water resource sustainability: Progress, challenges and prospects in China

Combining Isotopic Techniques to Assess Historical Sediment Delivery in a Forest Catchment in Central Chile

Quantifying Sediment and Associated Pollutants Sources in Agricultural Catchments Using Isotopic Techniques

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