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Marine Calcium Carbonate Biogeochemistry

The Subhas Lab

Our state-of-the-art laboratory at Woods Hole Oceanographic Institution focuses on marine organisms that grow shells in the ocean, and their relationship to the marine carbon and alkalinity cycles. We conduct experiments and make measurements in the lab and in the field, using a combination of novel instrumentation and innovative approaches to traditional carbonate chemistry measurements.

** A note for these momentous times we are living in.  Environmental research is social justice research. Ocean research is social justice research.   I am committed to making my lab a welcoming, inclusive space for Black and other underrepresented minority people of all genders and sexual orientations.  Please do not hesitate to reach out if you want to get engaged, or want to know more about how I am engaging with racism issues at WHOI. **

building a saturometer

Biogenic calcium carbonate solubilities through lab and field saturometry

Shell building

Coccoliths and foraminifera and their contribution to the marine CaCO3 cycle

ocean alkalinization

Ocean alkalinization is an approach to mitigating anthropogenic CO2 emissions

Recent Publications

Subhas, A.V., McCorkle, D.C., McNichol, A.P., Quizon, A., and Long, M.H.: Selective Preservation of Coccolith Calcite in Ontong-Java Plateau Sediments. In press in Paleoceanography and Paleoclimatology. https://doi.org/10.1029/2019PA003731

Naviaux, J.D., Subhas, A.V., Dong, S., Rollins, N.E., Liu, X., Berelson, W.M., Adkins, J.F., and Byrne, R.H., 2019: Calcite Dissolution Rates in Seawater: Lab vs. In Situ Measurements and Inhibition by Organic Matter. Marine Chemistry, 215, 103684. https://doi.org/10.1016/j.marchem.2019.103684

Subhas, A.V., Berelson, W.M., Dong, S., Rollins, N.E., Adkins, J.F., 2019: The Carbonic Anhydrase Activity of Sinking and Suspended Particles in the North Pacific Ocean. In press at Limnology and Oceanography. https://doi.org/10.1002/lno.11332

Dong, S., Berelson, W.M., Rollins, N.E., Subhas, A.V., Naviaux, J.D., Celestian, A.J., Liu, X.,Turaga, N., Kemnitz, N.J.,Byrne, R.H., Adkins, J.F., 2019: Aragonite Dissolution Kinetics and Calcite/Aragonite Ratios in Sinking and Suspended Particles in the North Pacific. ​Earth and Planetary Science Letters, 515, 1-12. https://doi.org/10.1016/j.epsl.2019.03.016