Preprints
https://doi.org/10.5194/bgd-9-6169-2012
https://doi.org/10.5194/bgd-9-6169-2012
30 May 2012
 | 30 May 2012
Status: this preprint was under review for the journal BG. A revision for further review has not been submitted.

Effect of carbonate chemistry manipulations on calcification, respiration, and excretion of a Mediterranean pteropod

S. Comeau, J.-P. Gattuso, R. Jeffree, and F. Gazeau

Abstract. Although shelled pteropods are expected to be particularly sensitive to ocean acidification, the few available studies have mostly focused on polar species and have not allowed determining which parameter of the carbonate system controls their calcification. Specimens of the temperate Mediterranean species Creseis acicula were maintained under seven different conditions of the carbonate chemistry, obtained by manipulating pH and total alkalinity, with the goal to disentangle the effects of the pH and the saturation state with respect to aragonite (Ωa). Our results tend to show that respiration, excretion as well as rates of net and gross calcification were not directly affected by a decrease in pH but decreased significantly with a decrease in Ωa. Due to the difficulties in maintaining pteropods in the laboratory and the important variability in their abundances in our study site, long-term acclimation as well as replication of the experiment was not possible. However, we strongly believe that these results represent an important step in the mechanistic understanding of the effect of ocean acidification on pteropods physiology.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
S. Comeau, J.-P. Gattuso, R. Jeffree, and F. Gazeau
 
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
 
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
S. Comeau, J.-P. Gattuso, R. Jeffree, and F. Gazeau
S. Comeau, J.-P. Gattuso, R. Jeffree, and F. Gazeau

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