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Analyses of the natural variation in stable isotopes of components of ecological systems have provided new insights into how these systems function across paleoecological to modern timescales and across a wide range of spatial scales. Isotope abundances of the molecules in biological materials and geochemical profiles are viewed as recorders that can be used to reconstruct ecological processes or...
Stable isotopes are being increasingly used in wildlife forensics as means of determining the origin and movement of animals. The heavy isotope content of precipitated water and snow (δDp, δ18Op) varies widely and systematically across the globe, providing a label that is incorporated through diet into animal tissue. As a result, these isotopes are potentially ideal tracers of geographic origin. The...
Successful application of stable-hydrogen isotope measurements (δDf) of feathers to track origins of migratory birds and other wildlife requires a fundamental understanding of the correlation between δDf and deuterium patterns in rainfall (δDp) over continental scales. A strong correlation between δDp and δDf has been confirmed for birds and insects in North America, but not yet for other continents...
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