Comment on “Phytoplankton Calcification in a High-CO2 World”

Iglesias-Rodriguez et al. (Research Articles, 18 April 2008, p. 336) reported that the coccolithophore Emiliania huxleyi doubles its organic matter production and calcification in response to high carbon dioxide partial pressures, contrary to previous laboratory and field studies. We argue that shortcomings in their experimental protocol compromise the interpretation of their data and the resulting conclusions.
Riebesell U., Bellerby R. G. J., Engel A., Fabry V. J., Hutchins D. A., Reusch T. B. H., Schulz K. G. & Morel F. M. M., 2008. Comment on “Phytoplankton Calcification in a High-CO2 World”. Science 322:1466b-1466b. Article (subscription required).

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