Sun. May 26, 2024 3:30 PM - 4:45 PM 106 (International Conference Hall, Makuhari Messe)

[E] Oral
| A (Atmospheric and Hydrospheric Sciences )
| A-OS Ocean Sciences & Ocean Environment

[A-OS13] Marine ecosystems and biogeochemical cycles: theory, observation and modeling

3:30 PM - 3:45 PM

[AOS13-11] Integrated trophic positions of zooplankton communities as a new indicator of marine ecosystem structure

*Naoto F. Ishikawa¹, Kazuaki Tadokoro², Chisato Yoshikawa¹, Nanako O. Ogawa¹, Naohiko Ohkouchi¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Japan Fisheries Research and Education Agency)

Wed. May 29, 2024 9:00 AM - 10:15 AM 105 (International Conference Hall, Makuhari Messe)

[J] Oral
| H (Human Geosciences )
| H-TT Technology & Techniques

[H-TT16] Development and application of environmental traceability methods

9:45 AM - 10:00 AM

[HTT16-09] Nitrogen isotopic relationships in diets, eye lenses, and muscle of chub mackerel revealed through a laboratory rearing experiment

*Chisato Yoshikawa¹, Nanako O. Ogawa¹, Naoto F. Ishikawa¹, Michio Yoneda², Ryuji Yukami², Shin-ichi Ito³, Naohiko Ohkouchi¹ (1.JAMSTEC, 2.FRA, 3.AORI)

Fri. May 31, 2024 10:45 AM - 12:00 PM 105 (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS10] Global climate change driven by the Southern Ocean and the Antarctic Ice Sheet

11:30 AM - 11:45 AM

[MIS10-10] Past and present variability of nitrate utilization in the seasonally ice-covered Southern Ocean

*Aymeric Pierre Marie Servettaz¹, Yuta Isaji¹, Chisato Yoshikawa¹, Nanako O. Ogawa¹, Yeongjun Ryu², Boo-Keun Khim³, Yang-Hee Jang⁴, Daniel M. Sigman², Francisco J. Jiménez-Espejo^1,5, Naohiko Ohkouchi¹ (1.Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan, 2.Department of Geosciences, Princeton University, Princeton, New Jersey 08544, USA, 3.Department of Oceanography and Marine Research Institute, Pusan National University, Busan 46241, Korea, 4.Marine Ecosystem Management Department, Marine Environment Research Institute, Korea Marine Environment Management Corporation, Busan 49111, Korea, 5. Instituto Andaluz de Ciencias de la Tierra, CSIC-UGR, Spain)