英文Phanerozoic biodiversity change: Extinction and diversification
タイトル短縮名和文Phanerozoic biodiversity change: Extinction and diversification
英文Phanerozoic biodiversity
代表コンビーナ 氏名和文磯崎 行雄
英文Yukio Isozaki
英文Department of Earth Science and Astronomy, Multi-disciplinary Sciences - General Systems Studies, Graduate School of Arts and Sciences, The University of Tokyo
共同コンビーナ 1氏名和文澤木 佑介
英文Yusuke Sawaki
英文The University of Tokyo
英文Phanerozoic biodiversity is the consequence of repeated extinctions and following diversifications in the past, which were caused by large-scale environmental changes, in particular, by extremely rapid and drastic forcing that changed the environments of the biosphere. Irreversible and episodic changes in material cycling on the planet and influences of severe galactic cosmic radiation enhanced by encounter with dark cloud are nominated as major driving mechanisms for the alleged rapid, large-scale environmental perturbations. The biodiversity change in the fossiliferous Phanerozoic record is characterized by 5 major mass extinctions within the long-term trend of diversity increase. Nonetheless, each extinction event has been explained rather in ad hoc manner, without any universal explanation. Therefore, ultimate triggers that caused the Phanerozoic biodiversity still remain as unsolved issues. This session discusses the ancient environmental changes related to Phanerozoic biodiversity under a new light of the recent progress in geology.
招待講演Dongjing Fu (Northwest University, Xian 710069, China)
Xingliang Zhang (State Key Laboratory of Continental Dynamics, Shaanxi Key Laboratory of Early Life and Environments and Department of Geology, Northwest University)
尾上 哲治 (熊本大学大学院自然科学研究科)
藤崎 渉 (国立研究開発法人海洋研究開発機構)
口頭発表 5月28日 AM2
10:50 - 11:10BCG08-01The Ediacaran-Cambrian transition of North ChinaXingliang Zhang予稿
11:10 - 11:30BCG08-02The Qingjiang biota – An extraordinary new Burgess Shale-type fossil Lagerstätte from the early Cambrian of South ChinaDongjing Fu予稿
11:30 - 11:50BCG08-03ペルム紀/三畳紀境界における地球外3Heフラックスの増加イベント尾上 哲治予稿
11:50 - 12:10BCG08-04End-Triassic Mass Extinction: Causes and Consequences藤崎 渉予稿
口頭発表 5月28日 PM1
13:45 - 14:00BCG08-05地質学的時間スケールでみる生物多様性の変遷:拡散個体群と局所集団のスモールワールド性から考える種分化のメカニズム今岡 宏太予稿
14:00 - 14:15BCG08-06最下部カンブリア系SSF生層序の改訂河野 聖那予稿
14:15 - 14:30BCG08-07δ88Sr and87Sr/86Srrecords of the Middle-Late Permian seawater: mass extinction-relevant change in ocean Sr budget可児 智美予稿
14:30 - 14:45BCG08-08パンサラサ海遠洋域における後期三畳紀カーニアン湿潤化イベントにより形成された層状マンガン鉱床冨松 由希予稿
14:45 - 15:00BCG08-09白亜紀—古第三紀境界粘土層における親銅元素の異常濃縮丸岡 照幸予稿
15:00 - 15:15BCG08-10Mass extinctions: hierarchy of causes and cosmoclimatological perspective磯崎 行雄予稿
ポスター発表 5月28日 PM2
BCG08-P01白亜紀アプチアン/アルビアン境界における海洋オスミウム同位体比記録の復元: Oceanic Anoxic Event 1bと大規模火成活動との関連解明にむけて松本 廣直予稿
BCG08-P02パンサラサ海における後期三畳紀レーチアンのコノドント化石層序と三畳紀末コノドントの絶滅山﨑 栞奈予稿
BCG08-P03美濃帯遠洋性堆積岩のペルム紀/三畳紀境界に記録された古環境変動植村 真也予稿
BCG08-P04Geotectonic history of Mona Complex in Anglesey-Lleyn, Wales浅沼 尚予稿
BCG08-P05Radiogenic Sr isotope chemostratigraphy of the Ediacaran Doushantuo Formation in the Yangtze Craton, South China澤木 佑介予稿