Session outline
Session Sub Category Paleontology(PT)
Session ID B-PT27
Title Phanerozoic biodiversity change: Extinction and diversification
Short title Phanerozoic biodiversity change
Convener Name Yukio Isozaki
Affiliation Department of Earth Science and Astronomy, Multi-disciplinary Sciences - General Systems Studies, Graduate School of Arts and Sciences, The University of Tokyo
Co-convener 1. Name Yusuke Sawaki
Affiliation Tokyo Institute of Technology
Co-convener 2. Name Tomohiko Sato
Affiliation Graduate School of Arts and Sciences, The University of Tokyo
International Symposium No request
Language Japanese
Scope Biotic evolution was the consequence of the repeated extinctions and following diversifications in the past, which occurred with large-scale environmental changes caused by extremely rapid and drastic forcings to the biosphere. Irreversible and episodic changes in material cycling on the planet and in glactic cosmic radiation are recently nominated as possible major mechanisms to drive major environmental perturbations. The biosiversity change in the fossiliferous Phanerozoic record is characterized by the 5 major mass extinctions within the long-term trend of diversity increase. Nonetheless each extinction has been explained in various way, rather in an ad hoc manner, without any universal explanation. In addition, the role of nutrient supply (essential elements) appears more important in deciding the course of evolution. This session re-explores and discusses the Phanerozoic biodiversity change under the latest geological aspects.
Type of presentation Oral and Poster presentation
Invited papers