Takizawa, Y., Dharampal, P. S., Steffan, S. A., Takano, Y., Ohkouchi, N., & Chikaraishi, Y. (2017). Intra-trophic isotopic discrimination of15N/14N for amino acids in autotrophs: Implications for nitrogen dynamics in ecological studies. Ecology and Evolution, 7(9), 2916–2924. Portico. https://doi.org/10.1002/ece3.2866