Evaluation of Primary Production in the Lower Amazon River Based on a Dissolved Oxygen Stable Isotopic Mass Balance - William C. Gagne-Maynard; Nicholas D. Ward; Richard G. Keil; Henrique O. Sawakuchi; Alan C. Da Cunha; Vania Neu; Daimio C. Brito; Diani F. Da Silva Less; Joel E. M. Diniz; Aline De Matos Valerio; Milton Kampel; Alex V. Krusche; et al. (Frontiers in Marine Science, 2017)