Corrigendum: Carbon Dioxide Emissions along the Lower Amazon River - Sawakuchi, Henrique O.; Neu, Vania; Ward, Nicholas D.; Barros, Maria de Lourdes C.; Valerio, Aline M.; Gagne-Maynard, William; Cunha, Alan C.; Less, Diani F. S.; Diniz, Joel E. M.; Brito, Daimio C.; Krusche, Alex V.; Richey, Jeffrey E. (Frontiers in Marine Science, 2020)