Degradation process of shell density of marine calcified plankton in different pH conditions in the North Pacific

Katsunori Kimoto1, Nina Bednarsek2, Osamu Sasaki3, Yoshiyuki Nakano1, Masahide Wakita4 and Naomi Harada1, (1)JAMSTEC, Yokosuka, Japan, (2)Southern California Coastal Water Research Project, Costa Mesa, CA, United States, (3)Tohoku University Museum, Sendai, Japan, (4)JAMSTEC, MIO, Mutsu, Japan