Nitrogen stable isotope turnover and discrimination in lizards.

Published in: Rapid communications in mass spectrometry : RCM (2021)

Our results provide estimates of 15 N turnover rates and discrimination values that are essential to using and interpreting isotopes in studies of diet reconstruction, nutrient allocation, and trophic characterization in reptiles. These results also suggest that somatic tissues can be unreliable, while life history shifts in nutrient routing and metabolism potentially cause 15 N and 13 C dynamics to be decoupled.

Keyphrases

bone mineral density
gene expression
physical activity
copy number
case control
dna methylation