[B-PT08] Evolution of Chemosynthetic Ecosystem in Earth History

Thu. May 26, 2016 1:45 PM - 3:15 PM 301A (3F)

Convener:*Robert Jenkins(School of Natural System, College of Science and Engineering, Kanazawa University), Hiromi WATANABE(Japan Agency for Marine-Earth Science and Technology), Takami Nobuhara(Science Education (Geology), Faculty of Education, Shizuoka University), Ryuichi Majima(Faculty of Education and Human Sciences, Yokohama National University), Chair:Robert Jenkins(School of Natural System, College of Science and Engineering, Kanazawa University), Hiromi Kayama WATANABE(Japan Agency for Marine-Earth Science and Technology)

Chemosynthetic communities have changed in their taxonomic composition and spatial distribution through the Earth history, but the causes and backgrounds remain to be unclear. Topics and information in various studies will be exchanged between geology, paleontology, geochemistry, and biology.? We also hope to raise some seeds of co-works on evolutionary study on chemosynthetic ecosystem.

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1:45 PM - 2:00 PM

[BPT08-01] Microbialites in chemosynthetic ecosystems

★Invited papers

*Tomoyo Okumura¹ (1.Japan Agency for Marine-Earth Science & Technology)

2:00 PM - 2:15 PM

[BPT08-02] Decomposition of the plant in the ocean of the Late Cretaceous
-Focused on the Upper Cretaceous Yezo Group distributed in Nakagawa Town, Hokkaido, Japan-

*Yuma Yamamoto¹, Robert Jenkins² (1.Division of Environmental Science and Engineering, Graduate School of Natural Science and Technology, Kanazawa University, 2.School of Natural System, College of Science and Engineering, Kanazawa University)

2:15 PM - 2:30 PM

[BPT08-03] Influence of cold seep methane on the forming of echinoderm skeletons

*Moe Kato¹, Tatsuo Oji², Kotaro Shirai³, Tatsuya Unuma⁴ (1.Graduate School of Environmental Studies, Nagoya University, 2.Nagoya University Museum, 3.Atmosphere and Ocean Research Institute, The University of Tokyo, 4.Hokkaido National Fisheries Research Institute,Fisheries Research Agency)

2:30 PM - 2:45 PM

[BPT08-04] Mass occurrence of the enigmatic gastropod Elmira in the Late Cretaceous Sada Limestone seep deposit in southwestern Shikoku, Japa

*Takami Nobuhara¹, Daigaku Onda¹, Takuya Sato¹, Hidemi Aosawa¹, Toyoho Ishimura², Akira Ijiri³, Urumu Tsunogai⁴, Naoki Kikuchi⁵, Yasuo Kondo⁶, Kiel Steffen⁷ (1.Science Education (Geology), Faculty of Education, Shizuoka University, 2.Department of Chemistry and Material Engineering, National Institute of Technology, Ibaraki College, 3.Kochi Institute for Cores Sample Research, JAMSTEC, 4.Graduate School of Environmental Studies, Nagoya University, 5.Museum of Nature and Human Activities, Hyogo, 6.Sciences Unit, Natural Sciences Cluster, Kochi University, 7.Department of Palaeobiology, Naturhistoriska riksmuseet, Stockholm)

2:45 PM - 3:00 PM

[BPT08-05] Meiofaunal community compositions around hydrothermal vents in three seamounts in NW Pacific – Vent copepods want to stay with vent polychaetes?

*Motohiro Shimanaga^1,2, Reina Senokuchi¹, Yuki Uejima¹, Hidetaka Nomaki², Hiromi Kayama WATANABE², Tomo Kitahashi² (1.Kumamoto University, 2.Japan Agency for Marine-Earth Science and Technology)

3:00 PM - 3:15 PM

[BPT08-06] Nutrition sources of meiofauna revealed by stable carbon and nitrogen isotope ratios and natural radiocarbon abundances explain meiofaunal distribution patterns at hydrothermal vent fields

*Hidetaka Nomaki¹, Yuki Uejima², Nanako O Ogawa¹, Masako Yamane¹, Hiromi Kayama WATANABE¹, Reina Senokuchi², Tomo Kitahashi¹, Yusuke Yokoyama^3,1, Naohiko Ohkouchi¹, Motohiro Shimanaga^2,1 (1.Japan Agency for Marine-Earth Science and Technology, 2.Kumamoto University, 3.The University of Tokyo)