Effect of iron limitation on the cadmium to phosphorus ratio of natural phytoplankton assemblages from the Southern Ocean

By J. Cullen, Z. Chase, K. Coale, S. Fitzwater, R. Sherrell. 2003

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Element stoichiometries of individual plankton cells collected during the Southern Ocean Iron Experiment (SOFeX) (2004, methodology): “The C : P ratios of flagellates were approximately 50% lower, closer to the C : P ratio of 66 measured for bulk Southern Ocean plankton by Cullen et al. (2003).”
Effects of iron limitation on intracellular cadmium of cultured phytoplankton: Implications for surface dissolved cadmium to phosphate ratios (2009, background): “During shipboard incubation experiments, Cullen et al. (2003) studied the effects of Fe-limitation on the Cd:P composition of natural assemblages of Fe-limited marine phytoplankton in Southern Ocean.”
Cellular iron contents of plankton during the Southern Ocean Iron Experiment (SOFeX) (2004, methodology): “Whereas standard techniques that rely on size-fractionated filtration to concentrate cells prior to elemental analysis (e.g., Cullen and Sherrell, 1999; Cullen et al., 2003) cannot discriminate among cells of similar size and different functions, recent advances in microprobe technology have enabled”