Ries, Justin B (2011): Seawater carbonate chemistry, calcification and dissolution response, and skeletal mineralogy of benthic orhanisms during experiments, 2011 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.770088, Supplement to: Ries, JB (2011): Skeletal mineralogy in a high-CO2 world. Journal of Experimental Marine Biology and Ecology, 403(1-2), 54-65, https://doi.org/10.1016/j.jembe.2011.04.006
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Abstract:
Increasing atmospheric pCO2 reduces the saturation state of seawater with respect to the aragonite, high-Mg calcite (Mg/Ca > 0.04), and low-Mg calcite (Mg/Ca < 0.04) minerals from which marine calcifiers build their shells and skeletons. Notably, these polymorphs of CaCO3 have different solubilities in seawater: aragonite is more soluble than pure calcite, and the solubility of calcite increases with its Mg-content. Although much recent progress has been made investigating the effects of CO2-induced ocean acidification on rates of biological calcification, considerable uncertainties remain regarding impacts on shell/skeletal polymorph mineralogy. To investigate this subject, eighteen species of marine calcifiers were reared for 60-days in seawater bubbled with air-CO2 mixtures of 409 ± 6, 606 ± 7, 903 ± 12, and 2856 ± 54 ppm pCO2, yielding aragonite saturation states of 2.5 ± 0.4, 2.0 ± 0.4, 1.5 ± 0.3, and 0.7 ± 0.2. Calcite/aragonite ratios within bimineralic calcifiers increased with increasing pCO2, but were invariant within monomineralic calcifiers. Calcite Mg/Ca ratios (Mg/CaC) also varied with atmospheric pCO2 for two of the five high-Mg-calcite-producing organisms, but not for the low-Mg-calcite-producing organisms. These results suggest that shell/skeletal mineralogy within some--but not all--marine calcifiers will change as atmospheric pCO2 continues rising as a result of fossil fuel combustion and deforestation. Paleoceanographic reconstructions of seawater Mg/Ca, temperature, and salinity from the Mg/CaC of well-preserved calcitic marine fossils may also be improved by accounting for the effects of paleo-atmospheric pCO2 on skeletal Mg-fractionation.
Keyword(s):
Animalia; Arbacia punctulata; Argopecten irradians; Arthropoda; Benthic animals; Benthos; Calcification/Dissolution; Callinectes sapidus; Chlorophyta; Cnidaria; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Crassostrea virginica; Crepidula fornicata; Echinodermata; Eucidaris tribuloides; Halimeda incrassata; Homarus americanus; Hydroides crucigera; Laboratory experiment; Littorina littorea; Macroalgae; Mercenaria mercenaria; Mollusca; Mya arenaria; Mytilus edulis; Neogoniolithon sp.; North Atlantic; Oculina arbuscula; Penaeus plebejus; Plantae; Rhodophyta; Single species; Strombus alatus; Temperate; Urosalpinx cinerea
Project(s):
Funding:
Sixth Framework Programme (FP6), grant/award no. 511106: European network of excellence for Ocean Ecosystems Analysis
Comment:
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI).
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2760 data points
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