A new method to analyze δ15N of phenylalanine and glutamic acid to reconstruct spatial and temporal variations in N sources and trophic structures

Lin Zhang, Texas A&M University Corpus Christi, Corpus Christi, TX, United States, Wingman Lee, Texas A&M University-Corpus Christi, Corpus Christi, United States, Chongxiao Ji, Texas A&M University Corpus Christi, Corpus Christi, United States, Rupsa Roy, University of Massachusetts Dartmouth, New Bedford, MA, United States, Ava Kreider-Mueller, University of Massachusetts Dartmouth, SMAST, New Bedford, MA, United States and Mark A Altabet, Univ Massachusetts Darmouth, New Bedford, MA, United States