[E] Oral

A (Atmospheric and Hydrospheric Sciences ) » A-OS Ocean Sciences & Ocean Environment

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

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

convener:Shin-ichi Ito(Atmosphere and Ocean Research Institute, The University of Tokyo), Takafumi Hirata(Arctic Research Center, Hokkaido University), Eileen E Hofmann(Old Dominion University), Jessica Bolin(University of the Sunshine Coast), Chairperson:Takafumi Hirata(Arctic Research Center, Hokkaido University)

The ocean accounts for about 50% of global net primary production. This production is significant for carbon cycling and ecosystem functioning and is related directly or indirectly to a variety of climatic and ecological phenomena. The responses to natural and anthropogenic environmental stressors that influence marine production and diversity can cause perturbations to marine ecosystems that alter trophic dependencies and interactions among organisms at a range of space and timescales. Quantification of the principal mechanisms driving spatiotemporal variability of marine ecosystems remains to be done, especially in terms of evaluating uncertainty in ecological responses. As a result, evaluating vulnerability of marine ecosystems to environmental change requires systematic and holistic approaches that integrate physics to ecology and are based on both empirical observations and quantitative modelling. In addition, expectations to communicate these scientific outcomes to public society is increasingly common and encouraged.

This session aims to provide a venue for not only discussing recent advances in understanding marine biogeochemical cycles, ecosystems and their interactions, but also networking with a variety of people to seed new ideas in marine ecological research. Observational, modelling and conceptual studies are encouraged, particularly those including technological development and operational applications that consider linkages among biogeochemical and ecosystem processes, biodiversity, and the effects of multiple stressors from molecular to planetary scales.

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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)

3:45 PM - 4:00 PM

[AOS13-12] Recruitment of temperate Japanese eel larvae to the subarctic Hokkaido Island: has eel recruitment moved northward during the past 30 years?

*Yu-Lin Eda Chang¹, Kentaro Morita², Kanta Muramatsu³, Osamu Kishida³, Mari Kuroki² (1.Application Laboratory, Japan Agency for Marine-Earth Science and Technology, 2.The University of Tokyo, 3.Hokkaido University)

4:00 PM - 4:15 PM

[AOS13-13] Larval Fish Assemblages in Coastal Waters of Bangladesh: Spatial and Seasonal Dynamics

*SK AHMAD AL NAHID¹, Saifuddin Rana¹, Nargis Sultana¹, Jannatul Mawa¹, Sazeed Mehrab Souhardya², Ilias Ebne Kabir², Shahida Arfine Shimul¹, Md Masum Billah³, Md Khurshid Alam Bhuiyan⁴, Afsana Kabir Dipty⁵, Sk Istiaque Ahmed^1,6, Md Jalilur Rahman², Md Mehedi Iqbal⁶ (1.Chattogram Veterinary and Animal Sciences University, Khulshi, Chattogram 4225,, 2.Enhanced Coastal Fisheries in Bangladesh (ECOFISH II Activity), WorldFish Bangladesh & South Asia Office, Dhaka 1213, Bangladesh, 3.Inter-Departmental Research Centre for Environmental Science-CIRSA, University of Bologna, Ravenna Campus, Via S. Alberto 163, 48123 Ravenna, Italy, 4.Institute of Marine Research (INMAR), Department of Biology, Faculty of Marine and Environmental Science, University of Cádiz, Spain, 5.Department of Fisheries and Marine Science, Noakhali Science and Technology University, Bangladesh, 6.Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8564, Chiba, Japan)

4:15 PM - 4:30 PM

[AOS13-14] Trophic transfer and biomagnification of microplastics through food webs in coastal waters: A new perspective from a mass balance model

*Shike Gao¹, Zheng Li, Shuo Zhang (1.The university of Tokyo)

4:30 PM - 4:45 PM

[AOS13-15] Future redistribution of fishery resources suggests biological and economic trade-offs

*Irene Alabia¹, Jorge García Molinos¹, Takafumi Hirata¹, Franz J Mueter², Daiju Narita³, Toru Hirawake⁴ (1.Arctic Research center, Hokkaido University, 2.College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, 3.Graduate School and College of Arts and Sciences, The University of Tokyo, 4.National Institute of Polar Research / The Graduate University for Advanced Studies)

Session information