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For Establishing ‘Marine Ecological Chronology’: Interdisciplinary approach from Geochemistry, Numerical modeling, and Ecology

Update: 08. 17, 2021

Sep. 1, 2021(Sep. 1, 2021)

Research Meeting in International Coastal Research Center

Date:September 1st, 2021(Wed.)13:00~17:30
Venue:Online meeting
(Atmosphere and Ocean Research Institute, The University of Tokyo 
5-1-5 Kashiwanoha, Kashiwa-shi,Chiba 277-8564, JAPAN)

Organizer:Kazuki Yokouchi, Fisheries Resources Institute (FRI), Japan Fisheries Research and Education Agency (FRA), kyokouchi[at]
Contact Person at AORI: Kotaro Shirai, Department of Chemical Oceanography, kshirai[at]


13:00~13:10 Opening Remarks(Kazuki Yokouchi, FRI, FRA)
13:10~14:00 Establishing individual-based Marine Ecological Chronology enabled by biogeochemical tags (Kotaro Shirai, AORI, Univ. Tokyo)

Session 1 New migratory pictures of organisms by ecological history reconstruction
14:00-14:20 Coastal fishes and Japanese eels
  Kazuki Yokouchi (FRI, FRA)
14:20-14:40 Chum salmon and Pacific bluefin tuna
  Takashi Kitagawa (AORI, Univ. Tokyo)
14:40-15:00  Toothed whales: Towards monitoring migration history and social structure of sperm whales
  Kagari Aoki (AORI, Univ. Tokyo)

Session 2 Advanced application of geochemical approach for establishing biogeochemical tags
15:20-15:40  High resolution analysis of habitat environment recorded as the stable isotopic compositions in biogenic carbonate
  Toyoho Ishimura (Kyoto Univ.)
15:40-16:00  Migration histories of Japanese sardine inferred from stable isotope ratios of otoliths and eye lenses
  Tatsuya Sakamoto (FRI, FRA)
16:00-16:20 Fish migration passes estimated by isotopic ratios of light elements
  Jun Matsubayashi (FRI, FRA)

Session 3 High resolution migratory history reconstruction by the multi-disciplinary approach from Geochemical indices and modeling
16:20-16:40  A way forward: integration of biogeochemical tags and bioenergetics models
  Shin-ichi Ito (AORI, Univ. Tokyo)
16:40-17:00  Experimental approach for combining physical data assimilation model and lower trophic ecosystem model
  Takashi Seto (FRI, FRA)

17:00-17:30 General discussion (Kotaro Shirai, AORI, Univ. Tokyo)

Online registration form for the symposium:
Information for registered participants will be emailed by Tuesday, August 31, 2021.