Seawater carbonate chemistry and calcification rate of 10 investigated species of marine calcifiers

• Main Authors: Liu, Yiwei, Sutton, Jill N, Ries, Justin B, Eagle, Robert A
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: Acid-base regulation; Alkalinity; total; Animalia; Annelida; Aragonite saturation state; Arbacia punctulata; Arthropoda; Benthic animals; Benthos; Bicarbonate ion; Biomass/Abundance/Elemental composition; Calcification/Dissolution; Calcification rate; Calcifying fluid; pH; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Callinectes sapidus; Carbon; inorganic; dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cnidaria; Crassostrea virginica; Difference; Echinodermata; Eucidaris tribuloides; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Hydroides crucigera; Laboratory experiment; Macroalgae; Mercenaria mercenaria; Mollusca; Mytilus edulis; Neogoniolithon sp.; Not applicable; OA-ICC; Ocean Acidification International Coordination Centre; Oculina arbuscula; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Penaeus plebejus; Plantae; Registration number of species; Rhodophyta; Salinity; Single species; Ocean acidification
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.918128; https://doi.org/10.1594/PANGAEA.918128

The response of marine-calcifying organisms to ocean acidification (OA) is highly variable, although the mechanisms behind this variability are not well understood. Here, we use the boron isotopic composition (δ11B) of biogenic calcium carbonate to investigate the extent to which organisms' ability to regulate pH at their site of calcification (pHCF) determines their calcification responses to OA. We report comparative δ11B analyses of 10 species with divergent calcification responses (positive, parabolic, threshold, and negative) to OA. Although the pHCF is closely coupled to calcification responses only in 3 of the 10 species, all 10 species elevate pHCF above pHsw under elevated pCO2. This result suggests that these species may expend additional energy regulating pHCF under future OA. This strategy of elevating pHCF above pHsw appears to be a polyphyletic, if not universal, response to OA among marine calcifiers-although not always the principal factor governing a species' response to OA.