Summary
This 2018 field study documents the spatial and temporal variability of stable isotope signatures and elemental concentrations in soil across an agricultural field site. As suggested by the authors' focus, such heterogeneity is relevant to sediment source tracing applications, where these properties are commonly used as fingerprint markers; the findings imply that practitioners must account for within-field variation when interpreting sediment provenance. The work contributes empirical data on the natural variability of these tracers under field conditions rather than controlled settings.
UK applicability
Directly applicable to United Kingdom agricultural contexts, where sediment source tracing and soil fingerprinting are employed in water quality and erosion-control studies. The results inform best practice in designing sampling strategies and interpreting isotope-based sediment sourcing in British farmed landscapes.
Key measures
δ13C (carbon-13 isotope ratio), δ15N (nitrogen-15 isotope ratio), total carbon (TC), total nitrogen (TN), spatial and temporal variability patterns
Outcomes reported
The study characterised spatial and temporal variability of stable carbon and nitrogen isotope ratios (δ13C, δ15N) and total carbon and nitrogen concentrations across a field, as suggested by their potential utility as sediment source tracers. Field-scale heterogeneity in these soil properties implies implications for the reliability and interpretation of sediment source fingerprinting methods in agricultural landscapes.
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