Ecology 6th Edition by Charles Krebs

تمرين 6

How is it possible for stable isotope ratios to change between trophic levels? List several possible physiological mechanisms that might cause such changes. Are there any population mechanisms for achieving these changes? Would you expect differences in isotope ratios if you measured different parts of an animal or plant? Kelly (2000) discusses the use of stable isotopes and their limitations for studying diets.