| Short title | Proxies for Biogeosciences | 
	
		| Oral presentation Date/Room/Chair
 | May 21 AM1 (09:00 - 10:45) | 105 | Hiroshi Kitazato | 
	
		| May 21 AM2 (11:00 - 12:45) | 105 | Takashi Toyofuku | 
	
		| Poster presentation Date/Room
 | May 21 (Core Time 18:15 - 19:30) | Convention Hall | 
	
		| Contact | Hiroshi Kitazato | 
	
		| Email | kitazatoh@jamstec.go.jp | 
	
		| Convener | Hiroshi Kitazato 
			/ Jelle Bijma 
			/ Takashi Toyofuku | 
	
		| Scope | 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 invite contributions related to the biocalcification, calibration and validation of marine proxies. | 
	
		| Notes | Each presentation is 15 minutes.  For keeping session times, please talk within 12 minutes.  Rest of times will be used for discussions. | 
	
		| Time | Presentation No | Title | Author | Presenter | Abstract | 
	
		| Oral Presentation   May 21 AM1 (09:00-10:45) 105                              to the top | 
	
		| 09:00 - 09:30 | Invited BPO02-01
 | Calcification mechanisms in foraminifera and proxy incorporation | Jelle Bijma Gernot Nehrke
 Markus Raitsch
 other
 | Jelle Bijma | English | 
	
		| 09:30 - 09:45 | BPO02-02 | Environmental variation during foraminiferal calcification | Takashi Toyofuku | Takashi Toyofuku | English | 
	
		| 09:45 - 10:00 | BPO02-03 | Distribution of intracellular pH and algal endosymbionts during chamber formation in symbiont-bearing reef foraminifers | Kazuhiko Fujita YUJI, Kei
 Takashi Toyofuku
 | Kazuhiko Fujita | English | 
	
		| 10:00 - 10:15 | BPO02-04 | Autoclave aquaria allow for high-pressure culture experiments on deep-sea benthic foraminifera | Jutta Wollenburg | Jutta Wollenburg | English | 
	
		| 10:15 - 10:30 | BPO02-05 | Laboratory culture experiments: effect of dissolved oxygen concentration on planktonic foraminifera | Azumi Kuroyanagi Regine E. da Rocha
 Jelle Bijma
 other
 | Azumi Kuroyanagi | English | 
	
		| 10:30 - 10:45 | BPO02-06 | Subarctic and Arctic Emiliania huxleyi coccolith morphological responses to the growth temperatures | Kazuko Saruwatari Manami Satoh
 Naomi Harada
 other
 | Kazuko Saruwatari | English | 
	
		| Oral Presentation   May 21 AM2 (11:00-12:45) 105                              to the top | 
	
		| 11:00 - 11:15 | BPO02-07 | Morphological and ecological characters of two cryptic genetic types in the radiolarian {i}Spongotrochus glacialis{/i}. | Yoshiyuki Ishitani Yurika Ujiie
 Kiyotaka Takishita
 | Yoshiyuki Ishitani | English | 
	
		| 11:15 - 11:30 | BPO02-08 | The Phylogenetic Affiliations of Radiolarian-like Environmental 18S rDNA Genes from the Northern South China Sea | Luyan Li Endo Kazuyoshi
 | Luyan Li | English | 
	
		| 11:30 - 11:45 | BPO02-09 | Fossil cyanobacteria as a potential pH proxy for Phanerozoic ocean | Fumito Shiraishi | Fumito Shiraishi | English | 
	
		| 11:45 - 12:00 | BPO02-10 | Benthic foraminifera as Quaternary palaeoclimate proxies in the New Caledonia Basin | Briony Mamo Glenn Brock
 Elsie Gretton
 | Briony Mamo | English | 
	
		| 12:00 - 12:15 | BPO02-11 | Daily light cycle reconstructed by Sr/Ca in a fossil giant clam, {i}Tridacna gigas{/i}, living in 4.6 ka, southern Japan | Masako Hori Kotaro Shirai
 Naoto Takahata
 other
 | Masako Hori | English | 
	
		| 12:15 - 12:30 | BPO02-12 | The cesspool preservation hypothesis as a key to preservation of exceptionally well preserved orsten-type fossils | Gengo Tanaka Haruyoshi Maeda
 Yoshiaki Matsushima
 | Gengo Tanaka | English | 
	
		| 12:30 - 12:45 | 3-min talk in an oral session@(BPO02-P01/BPO02-P02/BPO02-P04/BPO02-P09/BPO02-P10) | 
	
		| Presentation No | Title | Author | Presenter | Abstract | 
	
		| Poster Presentation   May 21  Core Time (18:15-19:30) Convention Hall                    to the top | 
	
		| BPO02-P01 | Biocalcification and teh geochemistry of proxies | Hiroshi Kitazato | Hiroshi Kitazato | English | 
	
		| BPO02-P02 | Assessing the environmental impact of T?hoku tsunami off Hachinohe (NE Japan): a multidisciplinary approach | Christophe Fontanier Takashi Toyofuku
 | Takashi Toyofuku | English | 
	
		| BPO02-P03 | Using microComputedTomography to study the impact of environmental stressors on benthic foraminifera: initial results | Helena Filipsson Takashi Toyofuku
 Osamu Sasaki
 | Takashi Toyofuku | English | 
	
		| BPO02-P04 | Ecological impact of the T?hoku Tsunami on shallow-water marine biodiversity off Hachinohe (NE JAPAN) | Pauline Duros | Pauline Duros | English | 
	
		| BPO02-P05 | First-order estimate of the planktic foraminifer biomass in the modern global ocean | Aurore Movellan Ralf Schiebel
 Helene Howa
 | Ralf Schiebel | English | 
	
		| BPO02-P06 | Vertical migration, nitrate uptake and denitrification: survival mechanisms of foraminifers under low DO conditions | Karolina Koho E Pina-Ochoa
 Emmanuelle Geslin
 other
 | Karolina Koho | English | 
	
		| BPO02-P07 | Seawater Mg/Ca variability during the Middle Miocene Climate Optimum | Lennart Jan de Nooijer IEY van Dijk
 Takashi Toyofuku
 other
 | Lennart Jan de Nooijer | English | 
	
		| BPO02-P08 | Seasonality in the Arabian Sea over glacial-interglacial cycles | Lennart Jan de Nooijer R Tjallingii
 GJ Brummer
 other
 | Lennart Jan de Nooijer | English | 
	
		| BPO02-P09 | Temperature-controlled experiments for the shell microstructural formation of S. broughtonii (Mollusca: Bivalvia) | Kozue Nishida Atsushi Suzuki
 Ryosuke Isono
 other
 | Kozue Nishida | English | 
	
		| BPO02-P10 | Phosphorus speciation analysis of sediments in the hypersaline Meedee Lake, off Crete Island, Eastern Mediterranean Sea | Yurie Yamaguchi Kosei E. Yamaguchi
 Masafumi MURAYAMA
 other
 | Yurie Yamaguchi | English |