Articles scientifiques
Z. V Finkel, A. S Quigg, R. K Chiampi, O. E Schofield, and P. G Falkowski (2007)
Phylogenetic Diversity in Cadmium: Phosphorus Ratio Regulation by Marine Phytoplankton
Limnology and Oceanography, 52(3):1131-1138.
We examined the effect of irradiance and growth rate on cadmium:phosphorus ratio in five species of phytoplankton representing four different phylogenetic groups to determine the relative importance of growth rate, irradiance, and taxonomic differences on Cd:P ratios. Irradiance and growth rate are responsible for 2 orders of magnitude variation in the Cd:P of phytoplankton. Diatoms exhibit an increase; cyanobacteria, a decrease; and prasinophyte and dinoflagellate species, no functional response in Cd:P with increasing growth rate because of changes in irradiance. These results are consistent with a metabolic demand for Cd in diatoms and a metabolic sensitivity to Cd by cyanobacteria.
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