In “Global change: Oceanic action at a distance” by Raja S. Ganeshram (Nature 419, 123–125; 2002), the author list for one of the two main papers under discussion (ref. 3) contained an error. The correct citation for that reference is Matsumoto, K., Sarmiento, J. L. & Brzezinski, M. A. Glob. Biogeochem. Cycles 16, 10.1029/2001GB001442 (2002).