Shallower living depth instead of higher seawater alkalinity enhanced calcification in bloom-forming coccolithophores during their Pleistocene acme event

Hongrui Zhang1, Reto Simon Wijker2, Iván Hernández-Almeida3, Xiaolin Ma4, Thomas Tanner3, Heather M Stoll5 and Xingxing Wang6, (1)Tongji Univeristy, Shanghai, China, (2)ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, (3)ETH Zurich, Zurich, Switzerland, (4)State Key Laboratory of Loess Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China, (5)ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland, (6)State Key Laboratory of Marine Geology, Tongji University, Shanghai, China