title: Comment on "Phytoplankton calcification in a high-CO2 world".
abstract: 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.
authors.affiliation: Leibniz Institute of Marine Sciences, IFM-GEOMAR, D-24105 Kiel, Germany. uriebesell@ifm-geomar.de
authors.forename: Ulf
authors.initials: U
authors.lastname: Riebesell
authors.forename: Richard G J
authors.initials: RG
authors.lastname: Bellerby
authors.forename: Anja
authors.initials: A
authors.lastname: Engel
authors.forename: Victoria J
authors.initials: VJ
authors.lastname: Fabry
authors.forename: David A
authors.initials: DA
authors.lastname: Hutchins
authors.forename: Thorsten B H
authors.initials: TB
authors.lastname: Reusch
authors.forename: Kai G
authors.initials: KG
authors.lastname: Schulz
authors.forename: François M M
authors.initials: FM
authors.lastname: Morel
mesh_terms: D001272:Atmosphere; D002113:Calcification, Physiologic; D002245:Carbon Dioxide; D006863:Hydrogen-Ion Concentration; D009792:Oceans and Seas; D010788:Photosynthesis; D010839:Phytoplankton / Q000254:growth & development / Q000502:physiology*; D012107:Research Design
chemical_list: D002245:Carbon Dioxide