Seawater carbonate chemistry and measurements of foraminifera test morphology

In this study, laboratory treatments were conducted to examine the response of Haynesina sp., a benthic foraminifer identified from coastal sediments in Rhode Island, United States, to moderate and high acidification conditions. Thicknesses of foraminifera tests were mapped using X-ray tomography, enabling systematic comparisons throughout individual test chambers. The treatments were applied to both live and dead foraminifera, which provides an opportunity for examining the biotic and abiotic responses of foraminifera and their calcareous remains to coastal acidification.