Portal de Periódicos da CAPES

Marine calcifiers exhibit mixed responses to CO2-induced ocean acidification

2009; Geological Society of America; Volume: 37; Issue: 12 Linguagem: Inglês

10.1130/g30210a.1

1943-2682

Justin B. Ries, Anne L. Cohen, D. C. McCorkle,

Marine Bivalve and Aquaculture Studies

Research Article| December 01, 2009 Marine calcifiers exhibit mixed responses to CO2-induced ocean acidification Justin B. Ries; Justin B. Ries 1Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA *Current address: Department of Marine Sciences, 333 Chapman Hall, Campus Box 3300, University of North Carolina–Chapel Hill, Chapel Hill, North Carolina 27599, USA Search for other works by this author on: GSW Google Scholar Anne L. Cohen; Anne L. Cohen 1Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA Search for other works by this author on: GSW Google Scholar Daniel C. McCorkle Daniel C. McCorkle 1Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA Search for other works by this author on: GSW Google Scholar Geology (2009) 37 (12): 1131–1134. https://doi.org/10.1130/G30210A.1 Article history received: 07 Mar 2009 rev-recd: 16 Jul 2009 accepted: 21 Jul 2009 first online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Justin B. Ries, Anne L. Cohen, Daniel C. McCorkle; Marine calcifiers exhibit mixed responses to CO2-induced ocean acidification. Geology 2009;; 37 (12): 1131–1134. doi: https://doi.org/10.1130/G30210A.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Anthropogenic elevation of atmospheric carbon dioxide (pCO2) is making the oceans more acidic, thereby reducing their degree of saturation with respect to calcium carbonate (CaCO3). There is mounting concern over the impact that future CO2-induced reductions in the CaCO3 saturation state of seawater will have on marine organisms that construct their shells and skeletons from this mineral. Here, we present the results of 60 d laboratory experiments in which we investigated the effects of CO2-induced ocean acidification on calcification in 18 benthic marine organisms. Species were selected to span a broad taxonomic range (crustacea, cnidaria, echinoidea, rhodophyta, chlorophyta, gastropoda, bivalvia, annelida) and included organisms producing aragonite, low-Mg calcite, and high-Mg calcite forms of CaCO3. We show that 10 of the 18 species studied exhibited reduced rates of net calcification and, in some cases, net dissolution under elevated pCO2. However, in seven species, net calcification increased under the intermediate and/or highest levels of pCO2, and one species showed no response at all. These varied responses may reflect differences amongst organisms in their ability to regulate pH at the site of calcification, in the extent to which their outer shell layer is protected by an organic covering, in the solubility of their shell or skeletal mineral, and in the extent to which they utilize photosynthesis. Whatever the specific mechanism(s) involved, our results suggest that the impact of elevated atmospheric pCO2 on marine calcification is more varied than previously thought. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.