Introduction: Recent work has proposed that the nitrogen isotopes in marine sediments can be impacted by anaerobic oxidation of methane (AOM), since nitrogen uptake by anaerobic methanotrophic archaea ...
Tina Lüdecke, a geochemist at the University of the Witwatersrand. “When animals digest food, biochemical reactions favor the light isotope of nitrogen (14 N).” “Consequently, the degradation products ...