Summary 1 The use of stable isotopic techniques to study animal diets and trophic levels
requires a priori estimates of discrimination factors (Δ13C and Δ15N, also called …

Stable‐isotope analysis (SIA) can act as a powerful ecological tracer with which to examine
diet, trophic position and movement, as well as more complex questions pertaining to …

1. Lipids have more negative δⁱ³C values relative to other major biochemical compounds in
plant and animal tissues. Although variable lipid content in biological tissues alters results …

Carbon and nitrogen stable isotope analyses have improved our understanding of food
webs and movement patterns of aquatic organisms. These techniques have recently been …

Stable isotopes (δ15N and δ13C) are being widely applied in ecological research but there
has been a call for ecologists to determine species-and tissue-specific diet discrimination …

Rationale Stable isotope analysis (SIA) is a powerful tool for examining diet and food‐web
dynamics. SIA assumes “you are what you eat” relative to carbon (C) and nitrogen (N) …

Stable isotopes of carbon and nitrogen can provide valuable insight into seabird diet, but
when interpreting results, seabird biologists need to recognize the many assumptions and …

Stable isotope analysis has become a crucial tool for aquatic food web ecologists, but a lack
of methodological standardization hinders comparisons between studies. One …

Stable isotope analysis of fish tissue can aid studies of deep-sea food webs because
sampling difficulties severely limit sample sizes of fish for traditional diet studies. The carbon …

Accurately predicting errors related to preservation, lipid extraction, and lipid normalization
on chemical tracers would enable the use of archived samples in long-term studies of …