Session information

[E] Oral

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

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

Wed. May 24, 2023 10:45 AM - 12:00 PM 104 (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 A. Bolin(University of the Sunshine Coast), Chairperson:Jessica A. Bolin(University of the Sunshine Coast)

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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10:45 AM - 11:00 AM

[AOS13-06] Effect of Sea Surface Warming on Primary Production and Phytoplankton Size Classes (PSCs) in the Coastal Oyashio and Oyashio Regions, Northwest Pacific

*Willy Angraini¹, Koji Suzuki², Hiromi Kasai³, Tomonori Isada⁴ (1.Graduate School of Environmental Science, Hokkaido University, Japan, 2.Faculty of Environmental Earth Science, Hokkaido University, Japan, 3.Fisheries Resources Institute, Japan Fisheries Research and Education Agency, Japan, 4.Field Science Center for Northern Biosphere, Hokkaido University, Japan)

11:00 AM - 11:15 AM

[AOS13-07] Computationally efficient approaches for modeling the adaptive response of phytoplankton, including toxin production and Harmful Algal Blooms (HABs)

*S. Lan Smith¹ (1.Marine Ecosystem Research Group, RIGC, Japan Agency for Marine-Earth Science and Technology)

11:15 AM - 11:30 AM

[AOS13-08] Arctic-wide patterns of marine biodiversity under recent climate

*Irene Alabia¹, Jorge Garcia Molinos¹, Takafumi Hirata¹, Franz J. Mueter², Carmen L. David³ (1.Hokkaido University, 2.University of Alaska Fairbanks, 3.Wageningen University and Research)

11:30 AM - 11:45 AM

[AOS13-09] The stepwise acid dissolution for large fish otoliths using a new apparatus

*Keito Aonuma¹, Kozue Ando¹, Yosuke Miyairi¹, Yusuke Yokoyama¹ (1.The University of Tokyo)

11:45 AM - 12:00 PM

[AOS13-10] A comparison of fish diversity in rocky reef habitat by muti-mesh gillnets and environmental DNA metabarcoding

*Yuan LIN¹, Jun LI³, Zhenhua WANG^2,4, Shouyu ZHANG^2,4, Kai WANG^2,4, Xunmeng LI^2,4, Shin-ichi Ito¹ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, Tokyo, Japan, 2.College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, China, 3.East China Sea Environment Monitoring Center, State Oceanic Administration, Shanghai, China, 4.Marine Ranching Engineering Research Centre, Shanghai Ocean University, Shanghai, China)