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Stable Isotope Sourcing Using Sampling

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DOI: 10.4236/oje.2014.46027    3,604 Downloads   4,634 Views   Citations

ABSTRACT

Stable isotope mixing models are used to estimate proportional contributions of sources to a mixture, such as in the analysis of animal diets, plant nutrient use, geochemistry, pollution, and forensics. We describe an algorithm implemented as SISUS software for providing a user-specified number of probabilistic exact solutions derived quickly from the extended mixing model. Our method outperforms IsoSource [1], a deterministic algorithm for providing approximate solutions to represent the solution polytope. Our method is an approximate Bayesian large sample procedure. SISUS software is freely available at StatAcumen.com/sisus and as an R package at cran.r-project.org/web/packages/sisus.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Erhardt, E. , Wolf, B. , Ben-David, M. and Bedrick, E. (2014) Stable Isotope Sourcing Using Sampling. Open Journal of Ecology, 4, 289-298. doi: 10.4236/oje.2014.46027.

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