Effect of incubation time and substrate concentration on N-uptake rates by phytoplankton in the Bay of Bengal S. Kumar, R. Ramesh, S. Sardesai, and M. S. Sheshshayee Planetary and Geosciences Division, Physical Research Laboratory, Ahmedabad-380 009, India Chemical Oceanography Division, National Institute of Oceanography, Goa-403 004, India Dept. of Crop Physiology, University of Agricultural ...