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Tracing origins and migration of wildlife using stable isotopes: a review
- K. Hobson
- Environmental Science, GeographyOecologia
- 1 August 1999
This paper reviews the use of stable isotope analyses to trace nutritional origin and migration in animals and concludes that this technique will be extremely useful in helping to track migration and movement of a wide range of animals from insects to birds and mammals.
Assessing Avian Diets Using Stable Isotopes I: Turnover of 13C in Tissues
It is suggested that stable isotope analysis could be used to determine relative contributions of endogenous and exogenous nutrient sources for feather growth and egg production in captive and wild birds.
Assessing Avian Diets Using Stable Isotopes II: Factors Influencing Diet-Tissue Fractionation
It is suggested that nutritional stress caused substantial increases in diet-tissue fractionation values due either to: (1) mobilization and redeposition of proteins elsewhere in the body; or (2) amino acid composition changes in tissues.
Global application of stable hydrogen and oxygen isotopes to wildlife forensics
The precipitation maps show that the greatest potential for applying hydrogen and oxygen isotope forensics exists in mid- to high-latitude continental regions, where strong spatial isotope gradients exist and where strong, mechanistic relationships link precipitation and isotope ratios in biological tissue exist.
Stable carbon and nitrogen isotopic fractionation between diet and tissues of captive seals: implications for dietary reconstructions involving marine mammals
These values will permit more accurate dietary reconstructions on the basis of isotopic analysis of the tissues of seals and other marine mammals.
Stable-Nitrogen Isotope Enrichment in Avian Tissues Due to Fasting and Nutritional Stress: Implications for Isotopic Analyses of Diet
A mechanism of tissue 6'5N enrichment due to reduced nutrient intake is hypothesized and the implications of these results to ecosystem studies using stable-nitrogen isotope analysis are discussed.
Using stable isotopes to determine seabird trophic relationships
Stable isotopes of nitrogen and carbon analyses suggest that lower trophic-level organisms are more important to several seabirds than was recognized previously and may be a good indicator of inshore versus offshore feeding preference.
Mercury and other trace elements in a pelagic Arctic marine food web (Northwater Polynya, Baffin Bay).
A stable isotope (δ13C, δ15N) model for the North Water food web: implications for evaluating trophodynamics and the flow of energy and contaminants
Isotopic Discrimination between Food and Blood and Feathers of Captive Penguins: Implications for Dietary Studies in the Wild
- Y. Cherel, K. Hobson, S. Hassani
- Environmental SciencePhysiological and Biochemical Zoology
- 1 January 2005
The results indicate that there is no need to remove lipids before isotopic analysis of avian blood and that great care must be taken in the choice of isotopic discrimination factors to apply to wild species for which no controlled experiments on captive individuals have been done.