[B-PT03] Biomineralization and Geochemistry of Proxies

Wed. May 25, 2022 3:30 PM - 5:00 PM 303 (International Conference Hall, Makuhari Messe)

convener:Takashi Toyofuku(Japan Agency for Marine-Earth Science and Technology (JAMSTEC)), convener:Hiroshi Kitazato(Tokyo University of Marine Science and Technology (TUMSAT)), Jelle Bijma(Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung), convener:Kotaro Hirose(Faculty of Science and Engineering, Waseda University), Chairperson:Takashi Toyofuku(Japan Agency for Marine-Earth Science and Technology (JAMSTEC)), Kotaro Hirose(Faculty of Science and Engineering, Waseda University), Hiroshi Kitazato(Tokyo University of Marine Science and Technology (TUMSAT)), Jelle Bijma(Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung)

In order to reconstruct the Earth climate system, marine paleoclimatologists resort to transfer functions or geochemical proxies, which are produced or affected by organisms. The relationships used for reconstructions are generally based on field calibrations or derived from laboratory experiments. The danger of these so-called empirical relationships is that they may be valid only within the restricted parameter space of their calibration. Application of proxy relationships to very different environmental settings (e.g. high vs. low latitude or glacial vs. interglacial) requires a mechanistic understanding of these relationships. Much progress can be expected by a better understanding of the biomineralization mechanisms and the incorporation of proxy signals.
In this session we facilitate contributions related to the biomineralization, calibration and validation of marine proxies from field study, laboratory culture experiment, biological & ecological studies and paleo-environmental reconstruction.

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Introduction (3:30 PM - 3:33 PM)

3:33 PM - 3:48 PM

[BPT03-01] Effect of inhibitors (acetazolamide and bafilomycin) on the calcification process of foraminifera.

*Takashi Toyofuku^1,2, Yukiko Nagai^1,3 (1.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2.Tokyo University of Marine Science and Technology (TUMSAT), 3.National Museum of Nature and Science,Tokyo)

3:48 PM - 4:08 PM

[BPT03-02] Effects on shell quality of large benthic foraminifers under different temperature conditions

★Invited Papers

*Shunichi Kinoshita¹, Azumi Kuroyanagi², Hiroshi Nishi³, Kazuhiko Fujita⁴, Atsushi Suzuki⁵, Hodaka Kawahata⁶ (1.Department of Geology and Paleontology, National Museum of Nature and Science, 2.Tohoku University Museum, The Center for Academic Resources and Archives, Tohoku University, 3.Fukui Prefectural University, 4.Department of Physics and Earth Sciences, University of the Ryukyus, 5.Geological Survey of Japan National Institute of Advanced Industrial Science and Technology (AIST), 6.Atmosphere Ocean Research Institute, the University of Tokyo)

4:08 PM - 4:23 PM

[BPT03-03] Photosynthetic rates in planktonic foraminiferal symbiosis: Comparison of two measures and its implications for carbon sources for photosynthesis

*Haruka TAKAGI¹, Katsunori KIMOTO², Tetsuichi FUJIKI² (1.Chiba University, 2.JAMSTEC)

4:23 PM - 4:38 PM

[BPT03-04] Reconstruction of Late Cretaceous paleovegetation based on terrestrial palynomorphs and biomarker analysis of the forearc basin sediments from the Haborogawa Formation, Yezo Group, Hokkaido, Japan

*Maho Hayakawa¹, Masashi A. Ikeda¹, Ken Sawada², Reishi Takashima³, Hiroshi Nishi⁴, Hideto Nakamura² (1.Graduate School of Science, Hokkaido University, 2.Dpartment of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, 3.The Center for Academic Resources and Archives, The Tohoku University Museum, Tohoku University, 4.Institute of Dinosaur Research, Fukui Prefectual University)

4:38 PM - 4:53 PM

[BPT03-05] Metal Accumulation Using a Bacterium (K-142) Identified from Environmental Microorganisms by the Screening of Au Nanoparticles Synthesis

*YITING LI¹, MICHIO SUZUKI¹ (1.The University of Tokyo)

Discussion (4:53 PM - 5:00 PM)

Session information