Open Journal of Ecology
Volume 4, Issue 6 (May 2014)
ISSN Print: 2162-1985 ISSN Online: 2162-1993
Google-based Impact Factor: 1.33 Citations h5-index & Ranking
Stable Isotope Sourcing Using Sampling ()
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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.
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