δ15N analyses of amino acids from co-occurring clams in the San Francisco Bay-Sacramento/San Joaquin Delta@en

Nitrogen isotope values of individual amino acids were measured. Clam specimens were collected at USGS Sites 2.1 and processed following Stewart et al. (2013; doi:10.3354/meps10503). Amino acids were hydrolyzed from clam muscle tissue, derivatized, and isolated following Vokhshoori et al. (2013; doi:10.3354/meps10746). The measurement of the nitrogen isotope values of individual amino acids were conducted following Vokhshoori et al., 2013 and Vokhshoori and McCarthy, 2013 (doi:10.1371/journal.pone.0098087), respectively.

本数据集完成了单个氨基酸的氮同位素值测定。蛤蜊标本采集自美国地质调查局（USGS）站点2.1，并参照Stewart等（2013年；doi:10.3354/meps10503）的方法完成前处理。从蛤蜊肌肉组织中水解得到的氨基酸，依照Vokhshoori等（2013年；doi:10.3354/meps10746）的方法进行衍生化与分离。单个氨基酸的氮同位素值测定分别参照Vokhshoori等（2013年）以及Vokhshoori与McCarthy（2013年；doi:10.1371/journal.pone.0098087）的方法开展。