Introduction (1:45 PM - 1:50 PM)
Session information
[E] Oral
U (Union ) » Union
[U-07] Ecosystem fluctuations in the Northwest Pacific and their linkages to global environmental change
Thu. May 28, 2026 1:45 PM - 3:15 PM Exhibition Hall Special Setting (1) (Exhibition Hall 7&8, Makuhari Messe)
Chairperson:Suga Toshio(WPI-Advanced Institute for Marine Ecosystem Change, Tohoku University), Nishikawa Hatsumi(Hokkaido University), Ito Daiki(Fisheries Resources Institute, Japan Fisheries Research and Education Agency)
In recent years, the northwestern Pacific region has witnessed the longest Kuroshio meander on record, an unprecedented abnormal northward shift of the Kuroshio Extension, the occurrence of the world's strongest marine heatwave, and significant ecosystem changes, including coral bleaching and shifts in fish species distribution along coasts and in the open ocean. Furthermore, a link has been suggested between variations in the Kuroshio and Kuroshio Extension and changes in the Pacific-scale wind system. Are these changes part of the Earth System shifts accompanying global warming? Unraveling the full picture of the series of changes in the Northwest Pacific, from ocean circulation to ecosystems, and clarifying their relationship with ocean-scale and global-scale changes could serve as a touchstone for comprehensively understanding the relationship between global-scale changes and regional/local changes. This session focuses on recent changes in the Northwest Pacific and aims to deepen the cross-disciplinary, overarching discussions on interactions between Earth system change and marine ecosystems, including the changing global marine environment, its relationship with ecosystems, and the impacts on human society.
1:50 PM - 2:07 PM
[U07-01] Recent Path Changes of the Kuroshio and Kuroshio Extension and Their Impacts on the Ocean–Atmosphere around Japan
★Invited Papers
*Shusaku Sugimoto1,2 (1. Graduate School of Science, Tohoku University, 2. Advanced Institute for Marine Ecosystem Change, Tohoku University)
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2:07 PM - 2:24 PM
[U07-02] Water temperature increases and changes in fish distribution off the Pacific coast of northeastern Japan
★Invited Papers
*Shigeho Kakehi1 (1. Japan Fisheries Research and Education Agency)
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2:24 PM - 2:41 PM
[U07-03] Analysis of Changes in Fish Community Structure in Response to Variations in the Flow Path of the Kuroshio Extension
★Invited Papers
*Akihide Kasai1 (1. Hokkaido University)
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2:41 PM - 2:58 PM
*Toyonobu Fujii1,2, Minoru Ikeda1,2, Yuichi Aoki3,4, Tomoko Hamabata2,3, Takeshi Obayashi2,3 (1. Onagawa Field Centre, Graduate School of Agricultural Science, Tohoku University, 2. Advanced Institute for Marine Ecosystem Change (WPI-AIMEC), Tohoku University, 3. Graduate School of Information Sciences, Tohoku University, 4. Tohoku Medical Megabank Organization, Tohoku University)
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2:58 PM - 3:15 PM
[U07-05] Physical Influences on Phytoplankton Community Structure off Sanriku in the Northwestern Pacific
★Invited Papers
*Daisuke Hasegawa1, Taketoshi Kodama2, Hikaru Homma1, Yuji Okazaki1, Dudsadee Leenawarat3 (1. Japan Fisheries Research and Education Agency, 2. The University of Tokyo, 3. Okinawa Institute of Science and Technology)
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