Technical Comments

Comment on "Phytoplankton Calcification in a High-CO2 World"

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Science  05 Dec 2008:
Vol. 322, Issue 5907, pp. 1466
DOI: 10.1126/science.1161096

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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.

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