[A-CG41] Coastal Ecosystems -2. Coral reefs, seagrass and macroalgal beds, and mangroves

Thu. Jun 3, 2021 5:15 PM - 6:30 PM Ch.07

convener:Yu Umezawa(Tokyo University of Agriculture and Technology), Toshihiro Miyajima(Marine Biogeochemistry Group, Division of Ocean-Earth System Science, Atmosphere and Ocean Research Institute, The University of Tokyo), Atsushi Watanabe(The ocean policy research institute, The Sasakawa peace foundation), Tomihiko Higuchi(Atmosphere and Ocean Research Institute, The University of Tokyo)

Coastal marine ecosystems are complex open system interacting with surrounding watersheds, outer ocean, and the atmosphere, providing a wealth of various ecosystem services to human life. Simultaneously, they are also influenced strongly and often negatively by human activities. This session, together with a companion session dedicated for the water cycle and land-ocean interactions, aims to provide a platform for interdisciplinary discussion covering various aspects of frontiers in coastal ecosystem sciences. This session particularly focuses shallow-water benthic communities ranging from temperate to tropical regions, such as coral reefs, seagrass and macroalgal beds, mangroves, intertidal flats, and saltmarshes. All these communities are characterized by intrinsically high primary production, active material cycling, and biodiversity hot spots. However, increasing human demand for coastal marine resources and industrial development concentrating on coastal regions incur the risk of rapid degradation and diminishment. Comprehensive assessment and monitoring of ecosystem functions and development of effective means for conservation and restoration are urgently needed for such communities. This session is dedicated to organizing and promoting such research and management activities by sharing state-of-the-art science and technology among ecologists, geologists, geochemists, biogeographers, etc. Field-based and modeling studies concerning the following topics are especially welcome: material cycling and ecosystem functions; community connectivity; environmental changes such as global warming, ocean acidification, and sea-level rise; ecosystem services such as carbon sequestration, nutrient regulation, and fisheries production; broad-scale comparison; long-term ecological researches.

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5:15 PM - 6:30 PM

[ACG41-P01] **Skeleton microstructures and in situ colony morphometry analysis of the corals collected during Tara Pacific Expedition**

*Guinther Hiromu Mitushasi¹, Yuko Kitano², Emilie Boissin³, Serge Planes³, Denis Allemand⁴, Tara Pacific Consortium¹, Sylvain Agostini¹ (1.Shimoda Marine Research Center, University of Tsukuba, 2. National Institute of Environmental Science, Japan (Tsukuba), 3. CRIOBE, Universite de Perpignan (Perpignan), 4. Monaco Scientific Center (Monaco))

5:15 PM - 6:30 PM

[ACG41-P02] Diversity of coral distributions and the difference in Sakiyamawan-Amitoriwan nature conservation area, Iriomote Island, Japan

*Shinya Shimokawa¹, Tomokazu Murakami¹, Hiroyoshi Kohno², Akira Mizutani² (1.National Research Institute for Earth Science and Disaster Resilience, 2.Okinawa Reagional Research Center, Tokai University)

5:15 PM - 6:30 PM

[ACG41-P03] Characteristics of water temperature changes and coral breaching in Amitori Bay, Iriomote Island, Japan

*Shinya Shimokawa¹, Tomokazu Murakami¹, Hiroyoshi Kohno², Akira Mizutai² (1.National Research Institute for Earth Science and Disaster Prevention, 2.Okinawa Reagional Research Center, Tokai University)

5:15 PM - 6:30 PM

[ACG41-P04] Coral bleaching countermeasures by supplying metal-containing feed ~evaluation the effect at gene expression levels~

*Ikuko Yuyama¹, Naoko Yasuda², Sayaka Higa², Sung-Yin Yang³, Sylvain Agostini ³, Tomihiko Higuchi⁴, Toshihiro Miyajima⁴, Takashi Nakamura⁵, Hiroyuki Fujimura² (1.Yamaguchi University, 2.University of the Ryukyus, 3.University of Tsukuba, 4.The University of Tokyo , 5.Tokyo Institute of Technology)

5:15 PM - 6:30 PM

[ACG41-P05] Linear and non-linear analysis for high temperature and acidification event in the Great Barrier Reef based on the observation in the Coral Sea

*Tatsuki Tokoro^1,2, Shin-ichiro Nakaoka¹, Shintaro Takao¹ (1.National Institute for Environmental Studies, 2.Port and Airport Research Institute)

5:15 PM - 6:30 PM

[ACG41-P06] Stratigraphy of seagrass bed at Bise in Okinawa Island.

*Wataru Sano¹, Kazuhiko Fujita², Yoshikatsu Nakano³, Shoko Hirabayashi⁴, Yusuke Yokoyama⁵, Yosuke Miyairi⁵, Naoko Isomura⁶, Hironobu Kan¹ (1.Kyushu Univ., 2.Univ. of the Ryukyus, 3.Okinawa Institute of Science and Technology Graduate University , 4.Rissho Univ., 5.Univ. of Tokyo, 6.National Institute of Technology, Okinawa College)

5:15 PM - 6:30 PM

[ACG41-P07] Applying DPSIR framework for blue carbon ecosystems assessment: The case of Busuanga Island, Palawan, Philippines

*Jay Mar Dioquito Quevedo¹, Yuta Uchiyama², Ryo Kohsaka² (1.Tohoku University, 2.Nagoya University)

5:15 PM - 6:30 PM

[ACG41-P08] Detecting mangrove- and seagrass-derived eDNA from deep-sea sediment around Yaeyama Islands: Implication for offshore blue carbon sequestration

*Toshihiro Miyajima¹, Masami Hamaguchi², Takashi Nakamura³, Hajime Katayama⁴, Masakazu Hori⁵ (1.Marine Biogeochemistry Group, Division of Ocean-Earth System Science, Atmosphere and Ocean Research Institute, The University of Tokyo, 2.National Research Institute of Fisheries Technology, Japan Fisheries Research and Education Agency, 3.School of Environment and Society, Tokyo Institute of Technology, 4.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 5.National Research Institute of Fisheries Resources, Japan Fisheries Research and Education Agency)

5:15 PM - 6:30 PM

[ACG41-P09] Evaluation of the effect of differences in nitrogen loading on the chemical composition and decomposition characteristics of eelgrass(Zostera marina).

*Toru Miyata¹, Yu Umezawa¹, Takunari Ida¹, Yoshiki Horikawa¹, Makoto Watanabe¹, Shigeki Wada², Masahiro Nakaoka³, Tomohiro Kuwae⁴ (1.Tokyo University of Agriculture and Technology, 2.University of Tsukuba, 3.Hokkaido University, 4.Port and Airport Research Institute)

Session information

[A-CG41] Coastal Ecosystems -2. Coral reefs, seagrass and macroalgal beds, and mangroves

[ACG41-P01] **Skeleton microstructures and in situ colony morphometry analysis of the corals collected during Tara Pacific Expedition**

[ACG41-P02] Diversity of coral distributions and the difference in Sakiyamawan-Amitoriwan nature conservation area, Iriomote Island, Japan

[ACG41-P03] Characteristics of water temperature changes and coral breaching in Amitori Bay, Iriomote Island, Japan

[ACG41-P04] Coral bleaching countermeasures by supplying metal-containing feed ~evaluation the effect at gene expression levels~

[ACG41-P05] Linear and non-linear analysis for high temperature and acidification event in the Great Barrier Reef based on the observation in the Coral Sea

[ACG41-P06] Stratigraphy of seagrass bed at Bise in Okinawa Island.

[ACG41-P07] Applying DPSIR framework for blue carbon ecosystems assessment: The case of Busuanga Island, Palawan, Philippines

[ACG41-P08] Detecting mangrove- and seagrass-derived eDNA from deep-sea sediment around Yaeyama Islands: Implication for offshore blue carbon sequestration

[ACG41-P09] Evaluation of the effect of differences in nitrogen loading on the chemical composition and decomposition characteristics of eelgrass(Zostera marina).

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