Effects of Trophic Level and Metamorphosis on Discrimination of Hydrogen Isotopes in a Plant-Herbivore System Peters, Jacob M. ; Wolf, Nathan ; Stricker, Craig A. ; Collier, Timothy R. ; Martínez del Rio, Carlos Abstract Publication: PLoS ONE Pub Date: March 2012 DOI: 10.1371/journal.pone.0032744 Bibcode: 2012PLoSO...732744P