Uncertainty in source partitioning using stable isotopes

By D. Phillips, J. Gregg. Oecologia, 2017

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A practical introduction to stable-isotope analysis for seabird biologists: Approaches, cautions and caveats (2009, methodology): “If discrimination factors are known or can be approximated, prey and consumer isotopic ratios can be used in a mathematical model to estimate the proportion of each prey group in the consumer’s diet (Phillips & Gregg 2001, 2003).”
Food Web Structure and Basal Resource Utilization along a Tropical Island Stream Continuum, Puerto Rico1 (2003, methodology): “We used a standard single isotope (13C), twosource (algae and leaves) linear model created by Phillips and Greg (2001) to estimate an index of trophic significance of algal and leaf material to consumers.”
Foodweb structure in a tropical Asian forest stream (2004, methodology): “When a polygon could not be drawn to enclose the value of the consumer, the 2-isotope, 3-source mixed model was calculated by means of IsoError software (version 1.04; Phillips and Gregg 2001).”
Seasonal changes in the diet of a critically endangered seabird and the importance of trawling discards (2009, methodology): “We applied the Iso-Error dual-isotope, 3-source mixing model of Phillips and Gregg (2001).”