Zeebe, R. E. & Wolf-Gladrow, D. CO2 in Seawater: Equilibrium, Kinetics, Isotopes (Elsevier, 2001).
Ridgwell, A. & Zeebe, R. The role of the global carbonate cycle in the regulation and evolution of the Earth system. Earth Planet. Sci. Lett. 234, 299–315 (2005).
Google Scholar
Moore, C. M. et al. Processes and patterns of oceanic nutrient limitation. Nat. Geosci. 6, 701–710 (2013).
Google Scholar
Klausmeier, C. A., Litchman, E., Daufresne, T. & Levin, S. A. Optimal nitrogen-to-phosphorus stoichiometry of phytoplankton. Nature 429, 171–174 (2004).
Google Scholar
Krumhardt, K. M., Lovenduski, N. S., Iglesias-Rodriguez, M. D. & Kleypas, J. A. Coccolithophore growth and calcification in a changing ocean. Prog. Oceanogr. 159, 276–295 (2017).
Google Scholar
Zondervan, I. The effects of light, macronutrients, trace metals and CO2 on the production of calcium carbonate and organic carbon in coccolithophores—a review. Deep Sea Res. Part 2 54, 521–537 (2007).
Google Scholar
Gibbs, S. J., Sheward, R. M., Bown, P. R., Poulton, A. J. & Alvarez, S. A. Warm plankton soup and red herrings: calcareous nannoplankton cellular communities and the Palaeocene–Eocene Thermal Maximum. Phil. Trans. R. Soc. A 376, 20170075 (2018).
Google Scholar
Aloisi, G. Covariation of metabolic rates and cell size in coccolithophores. Biogeosciences 12, 6215–6284 (2015).
Google Scholar
Boudreau, B. P., Middelburg, J. J. & Luo, Y. The role of calcification in carbonate compensation. Nat. Geosci. 11, 894–900 (2018).
Google Scholar
Suchéras-Marx, B. & Henderiks, J. Downsizing the pelagic carbonate factory: impacts of calcareous nannoplankton evolution on carbonate burial over the past 17 million years. Glob. Planet. Change 123, 97–109 (2014).
Google Scholar
Beaufort, L. et al. Sensitivity of coccolithophores to carbonate chemistry and ocean acidification. Nature 476, 80–83 (2011).
Google Scholar
McClelland, H. L. O., Bruggeman, J., Hermoso, M. & Rickaby, R. E. M. The origin of carbon isotope vital effects in coccolith calcite. Nat. Commun. 8, 14511 (2017).
Google Scholar
Bolton, C. T. et al. Decrease in coccolithophore calcification and CO2 since the middle Miocene. Nat. Commun. 7, 10284 (2016).
Google Scholar
McClelland, H. L. O. et al. Calcification response of a key phytoplankton family to millennial-scale environmental change. Sci. Rep. 6, 34263 (2016).
Google Scholar
Duchamp-Alphonse, S. et al. Enhanced ocean–atmosphere carbon partitioning via the carbonate counter pump during the last deglacial. Nat. Commun. 9, 2396 (2018).
Google Scholar
Si, W. & Rosenthal, Y. Reduced continental weathering and marine calcification linked to late Neogene decline in atmospheric CO2. Nat. Geosci. 12, 833–838 (2019).
Google Scholar
Meier, K. J. S., Berger, C. & Kinkel, H. Increasing coccolith calcification during CO2 rise of the penultimate deglaciation (Termination II). Mar. Micropaleontol. 112, 1–12 (2014).
Google Scholar
Su, X., Liu, C. & Beaufort, L. Late Quaternary coccolith weight variations in the northern South China Sea and their environmental controls. Mar. Micropaleontol. 154, 101798 (2020).
Google Scholar
Berger, C., Meier, K. J. S., Kinkel, H. & Baumann, K.-H. Changes in calcification of coccoliths under stable atmospheric CO2. Biogeosciences 11, 929–944 (2014).
Google Scholar
Zachos, J., Dickens, G. R. & Zeebe, R. E. An early Cenozoic perspective on greenhouse warming and carbon-cycle dynamics. Nature 451, 279–283 (2008).
Google Scholar
Foster, G. L., Royer, D. L. & Lunt, D. J. Future climate forcing potentially without precedent in the last 420 million years. Nat. Commun. 8, 14845 (2017).
Google Scholar
Anagnostou, E. et al. Proxy evidence for state-dependence of climate sensitivity in the Eocene greenhouse. Nat. Commun. 11, 4436 (2020).
Google Scholar
Holtz, L.-M., Wolf-Gladrow, D. & Thoms, S. Stable carbon isotope signals in particulate organic and inorganic carbon of coccolithophores—a numerical model study for Emiliania huxleyi. J. Theor. Biol. 420, 117–127 (2017).
Google Scholar
Hermoso, M., Horner, T. J., Minoletti, F. & Rickaby, R. E. M. Constraints on the vital effect in coccolithophore and dinoflagellate calcite by oxygen isotopic modification of seawater. Geochim. Cosmochim. Acta 141, 612–627 (2014).
Google Scholar
Hermoso, M., Chan, I. Z. X., McClelland, H. L. O., Heureux, A. M. C. & Rickaby, R. E. M. Vanishing coccolith vital effects with alleviated carbon limitation. Biogeosciences 13, 301–312 (2016).
Google Scholar
Rickaby, R. E. M., Henderiks, J. & Young, J. N. Perturbing phytoplankton: response and isotopic fractionation with changing carbonate chemistry in two coccolithophore species. Clim. Past 6, 771–785 (2010).
Google Scholar
Ziveri, P. et al. Stable isotope ‘vital effects’ in coccolith calcite. Earth Planet. Sci. Lett. 210, 137–149 (2003).
Google Scholar
Bolton, C. T. & Stoll, H. M. Late Miocene threshold response of marine algae to carbon dioxide limitation. Nature 500, 558–562 (2013).
Google Scholar
Henderiks, J. Coccolithophore size rules—reconstructing ancient cell geometry and cellular calcite quota from fossil coccoliths. Mar. Micropaleontol. 67, 143–154 (2008).
Google Scholar
Sheward, R. M., Poulton, A. J., Gibbs, S. J., Daniels, C. J. & Bown, P. R. Physiology regulates the relationship between coccosphere geometry and growth phase in coccolithophores. Biogeosciences 14, 1493–1509 (2017).
Google Scholar
Gibbs, S. J. et al. Species-specific growth response of coccolithophores to Palaeocene–Eocene environmental change. Nat. Geosci. 6, 218–222 (2013).
Google Scholar
Herrmann, S. & Thierstein, H. R. Cenozoic coccolith size changes—evolutionary and/or ecological controls? Palaeogeogr. Palaeoclimatol. Palaeoecol. 333–334, 92–106 (2012).
Google Scholar
Young, J. R. & Ziveri, P. Calculation of coccolith volume and its use in calibration of carbonate flux estimates. Deep-Sea Research II 22, 1679–1700 (2000).
Google Scholar
Daniels, C. J., Sheward, R. M. & Poulton, A. J. Biogeochemical implications of comparative growth rates of Emiliania huxleyi and Coccolithus species. Biogeosciences 11, 6915–6925 (2014).
Google Scholar
Westerhold, T. et al. An astronomically dated record of Earth’s climate and its predictability over the last 66 million years. Science 369, 1383–1387 (2020).
Google Scholar
Pälike, H. et al. A Cenozoic record of the equatorial Pacific carbonate compensation depth. Nature 488, 609–614 (2012).
Google Scholar
Misra, S. & Froelich, P. N. Lithium isotope history of cenozoic seawater: changes in silicate weathering and reverse weathering. Science 335, 818–823 (2012).
Google Scholar
Ravizza, G. E. & Zachos, J. C. in Treatise on Geochemistry Vol. 6 (ed. Elderfield, H.) 551–581 (Elsevier, 2003).
McArthur, J. M., Howarth, R. J. & Bailey, T. R. Strontium isotope stratigraphy: LOWESS version 3: best fit to the marine Sr‐isotope curve for 0–509 Ma and accompanying look‐up table for deriving numerical age. J. Geol. 109, 155–170 (2001).
Google Scholar
Pegram, W. J., Krishnaswami, S., Ravizza, G. E. & Turekian, K. K. The record of sea water 1870s/1860s variation through the Cenozoic. Earth Planet. Sci. Lett. 113, 569–576 (1992).
Google Scholar
Shipboard Scientific Party, 2004. Leg 208 summary. In Zachos, J. C., Kroon, D. & Blum, P., et al., Proceedings of the Ocean Drilling Program, Initial Reports, 208, 1–112: College Station, TX (Ocean Drilling Program) (2004).
Brummer, G. J. A. & van Eijden, A. J. M. “Blue-ocean” paleoproductivity estimates from pelagic carbonate mass accumulation rates. Mar. Micropaleontol. 19, 99–117 (1992).
Google Scholar
Gafar, N. A., Eyre, B. D. & Schulz, K. G. A conceptual model for projecting coccolithophorid growth, calcification and photosynthetic carbon fixation rates in response to global ocean change. Front. Mar. Sci. 4, 433 (2018).
Google Scholar
Gafar, N. A. & Schulz, K. G. A three-dimensional niche comparison of Emiliania huxleyi and Gephyrocapsa oceanica: reconciling observations with projections. Biogeosciences 15, 3541–3560 (2018).
Google Scholar
Gafar, N. A., Eyre, B. D. & Schulz, K. G. A comparison of species specific sensitivities to changing light and carbonate chemistry in calcifying marine phytoplankton. Sci. Rep. 9, 2486 (2019).
Google Scholar
Zhang, Y. G. et al. Refining the alkenone–pCO2 method I: lessons from the Quaternary glacial cycles. Geochim. Cosmochim. Acta 260, 177–191 (2019).
Google Scholar
Freeman, K. H. & Pagani, M. in A History of Atmospheric CO2 and Its Effects on Plants, Animals, and Ecosystems Vol. 177 (eds Baldwin, I. T. et al.) 35–61 (Springer-Verlag, 2005).
Pagani, M. The alkenone–CO2 proxy and ancient atmospheric carbon dioxide. Phil. Trans. R. Soc. A 360, 609–632 (2002).
Google Scholar
Beerling, D. J. & Royer, D. L. Convergent Cenozoic CO2 history. Nat. Geosci. 4, 418–420 (2011).
Google Scholar
Henehan, M. J. et al. Revisiting the Middle Eocene Climatic Optimum ‘Carbon Cycle Conundrum’ with new estimates of atmospheric pCO2 from boron isotopes. Paleoceanogr. Paleoclimatol. https://doi.org/10.1029/2019PA003713 (2020).
Zachos, J., Pagani, M., Sloan, L. C., Thomas, E. & Billups, K. Trends, rhythms, and aberrations in global climate 65 Ma to present. Science 292, 686–693 (2001).
Google Scholar
Stap, L., Sluijs, A., Thomas, E. & Lourens, L. Patterns and magnitude of deep sea carbonate dissolution during Eocene Thermal Maximum 2 and H2, Walvis Ridge, southeastern Atlantic Ocean, Paleoceanography 24, PA1211, https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2008PA001655 (2009).
Sluijs, A. et al. Warm and wet conditions in the Arctic region during Eocene Thermal Maximum 2. Nat. Geosci. 2, 777–780 (2009).
Google Scholar
Stap, L. et al. High-resolution deep-sea carbon and oxygen isotope records of Eocene Thermal Maximum 2 and H2. Geology 38, 607–610 (2010).
Google Scholar
Bohaty, S. M. & Zachos, J. C. Significant Southern Ocean warming event in the late middle Eocene. Geology 31, 1017 (2003).
Google Scholar
van der Ploeg, R. et al. Middle Eocene greenhouse warming facilitated by diminished weathering feedback. Nat. Commun. 9, 2877 (2018).
Google Scholar
Bach, L. T., Riebesell, U., Gutowska, M. A., Federwisch, L. & Schulz, K. G. A unifying concept of coccolithophore sensitivity to changing carbonate chemistry embedded in an ecological framework. Prog. Oceanogr. 135, 125–138 (2015).
Google Scholar
Monteiro, F. M. et al. Why marine phytoplankton calcify. Sci. Adv. 2, e1501822–e1501822 (2016).
Google Scholar
Shipboard Scientific Party, 2004. Site 1263. In Zachos, J. C., Kroon, D., Blum, P., et al., Proceedings of the Ocean Drilling Program, Initial Reports, 208, 1–87 College Station, TX (Ocean Drilling Program) (2004).
Bice, K. L., Sloan, L. C. & Barron, E. J. in Warm Climates in Earth History (eds Huber, B. T., Macleod, K. G., & Wing, S. L.) 79–129 (Cambridge Univ. Press, 2000).
Handoh, I. C., Bigg, G. R. & Jones, E. J. W. Evolution of upwelling in the Atlantic Ocean basin. Palaeogeogr. Palaeoclimatol. Palaeoecol. 202, 31–58 (2003).
Google Scholar
Minoletti, F., Hermoso, M. & Gressier, V. Separation of sedimentary micron-sized particles for palaeoceanography and calcareous nannoplankton biogeochemistry. Nat. Protoc. 4, 14–24 (2009).
Google Scholar
Zhang, H., Stoll, H., Bolton, C., Jin, X. & Liu, C. A refinement of coccolith separation methods: Measuring the sinking characters of coccoliths. Biogeosciences Discussions (2018): 1–30 https://doi.org/10.5194/bg-2018-82 (2020).
Hermoso, M. et al. Towards the use of the coccolith vital effects in palaeoceanography: a field investigation during the middle Miocene in the SW Pacific Ocean. Deep Sea Res. Part 1 160, 103262 (2020).
Google Scholar
Lauretano, V., Hilgen, F. J., Zachos, J. C. & Lourens, L. J. Astronomically tuned age model for the early Eocene carbon isotope events: a new high-resolution δ13Cbenthic record of ODP site 1263 between ~49 and ~54 Ma. Newsl. Stratigr. 49, 383–400 (2016).
Google Scholar
Westerhold, T., Röhl, U., Frederichs, T., Bohaty, S. M. & Zachos, J. C. Astronomical calibration of the geological timescale: closing the middle Eocene gap. Clim. Past 11, 1181–1195 (2015).
Google Scholar
Westerhold, T. et al. Astronomical Calibration of the Ypresian Time Scale: Implications for Seafloor Spreading Rates and the Chaotic Behaviour of the Solar System? Preprint at Clim. Past Discuss. https://doi.org/10.5194/cp-2017-15 (2017).
Gatuso, J. P., Epitalon, J. M., Lavigne, H. & Orr, J. seacarb: Seawater Carbonate Chemistry (2021); https://CRAN.R-project.org/package=seacarb
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