[B-PT03] Biomineralization and the Geochemistry of Proxies -Field ecology, Laboratory culture and Paleo

Sun. May 22, 2016 9:00 AM - 10:30 AM 101B (1F)

Convener:*Takashi Toyofuku(Japan Agency for Marine-Earth Science and Technology (JAMSTEC)), Hiroshi Kitazato(Institute of Biogeosciences (BioGeos),Japan Agency for Marine-Earth Science and Technology (JAMSTEC)), Jelle Bijma(Alfred-Wegener-Institut fur Polar- und Meeresforschung), Simon Redfern(University of Cambridge), Chair:Hiroshi Kitazato(Institute of Biogeosciences (BioGeos),Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

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 maybe 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 biocalcification mechanisms and the incorporation of proxy signals.
In this session we failitate contributions related to the biocalcification, calibration and validation of marine proxies from field study, laboratory culture experiment and paleo environmental reconstruction.

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9:00 AM - 9:15 AM

[BPT03-01] Foraminifera: Story teller of both Earth's environments and biotic evolution

*Hiroshi Kitazato¹ (1.Tokyo University of Marine Sciences and Technology (TUMSAT))

9:15 AM - 9:30 AM

[BPT03-02] The variable ambient ph during chamber formation process of benthic foraminifera

*Takashi Toyofuku¹ (1.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

9:30 AM - 9:45 AM

[BPT03-03] Living (stained) benthic foraminifera from the Mozambique Channel (eastern Africa): Exploring deep-sea biodiversity and biogeochemistry of unicellular fossilizing meiofauna

*Christophe Fontanier¹ (1.Ifremer, 2.University of Bordeaux, EPOC, 3.JAMSTEC)

9:45 AM - 10:00 AM

[BPT03-04] Reconstruction of foraminiferal calcification process by effective use of restricted data

*Miki Y. Matsuo¹, Takashi Toyofuku¹, Fumito Shiraishi², Lennart Jan de Nooijer³, Hide Sakaguchi¹ (1.Mathematical Science and Advanced Technology, Japan Agency for Marine-Earth Science and Technology, 2.Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima Univ., 3.Royal Netherlands Institute for Sea Research)

10:00 AM - 10:15 AM

[BPT03-05] Relation between the organic network and the crystal defects in the calcite of the prismatic layer of Pinctada fucata

*Hiroyuki Kintsu¹, Taiga Okumura², Lumi Negishi³, Toshihiro Kogure², Shohei Sakuda¹, Michio Suzuki¹ (1.Graduate School of Agricultural and Life Sciences, The University of Tokyo, 2.Graduate School of Science, The University of Tokyo, 3.Institute of Molecular and Cellular Biosciences, The University of Tokyo)

10:15 AM - 10:30 AM

[BPT03-06] Lateral and Vertical Textures in Shells of Calcitic and Aragonitic Foraminifers

*Kimiko Nakajima¹, Monami Suzuki¹, Yukiko Nagai², Yuya Oaki¹, Takashi Toyofuku², Hiroaki Imai¹ (1.Department of Applied Chemistry, Keio University, Yokohama, Japan, 2.Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan)