Seawater carbonate chemistry and processes during experiments with benthic foraminifera Ammonia tepida ...

• Main Authors: Dissard, Delphine, Nehrke, Gernot, Gert-Jan Reichart, Bijma, Jelle
• Format: Dataset
• Language: English
• Published: PANGAEA - Publishing Network for Geoscientific and Environmental Data 2010
• Subjects: Planktonic foraminifera
• Online Access: https://dx.doi.org/10.15468/bqne34; https://www.gbif.org/dataset/7ce91650-f762-11e1-a439-00145eb45e9a

Evidence of increasing concentrations of dissolved carbon dioxide, especially in the surface ocean and its associated impacts on calcifying organisms, is accumulating. Among these organisms, benthic and planktonic foraminifera are responsible for a large amount of the globally precipitated calcium carbonate. Hence, their response to an acidifying ocean may have important consequences for future inorganic carbon cycling. To assess the sensitivity of benthic foraminifera to changing carbon dioxide levels and subsequent alteration in seawater carbonate chemistry, we cultured specimens of the shallow water species Ammonia tepida at two concentrations of atmospheric CO2 (230 and 1900 ppmv) and two temperatures (10 °C and 15 °C). Shell weights and elemental compositions were determined. Impact of high and low pCO2 on elemental composition are compared with results of a previous experiment were specimens were grown under ambient conditions (380 ppvm, no shell weight measurements of specimen grown under ambient ...