[A-CG43] Coastal Ecosystems - 2. Coral reefs, seagrass and macroalgal beds, and mangroves

Thu. May 24, 2018 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Toshihiro Miyajima(Marine Biogeochemistry Group, Division of Ocean-Earth System Science, Atmosphere and Ocean Research Institute, The University of Tokyo), Yu Umezawa(Tokyo University of Agriculture and Technology), Atsushi Watanabe(東京工業大学　環境・社会理工学院, 共同), 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 [A-CG##], 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, tidal wetlands, and mangroves. 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 observational, experimental, and modeling studies concerning the following topics are especially welcome: ecosystem functions; elemental cycling; 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; regional- or global-scale comparison; long-term ecological researches.

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[ACG43-P01] Variation of stable isotope in soft tissue of scleractinian corals collected from Temperate zone in Japan

*Tomihiko Higuchi¹, Hiroyuki Fujimura², Kentaro Tanaka¹, Shirai Kotaro¹, Sylvain Agostitni³ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Faculty of Science, University of the Ryukyus, 3.Shimoda Marine Research Center, University of Tsukuba)

[ACG43-P02] Response of the eelgrass epifaunal food web to acidified ocean: An experimental approach

*Toshihiro Miyajima¹, Masaaki Sato^2,3, Masakazu Hori² (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 and Environment of Inland Sea, Fisheries Research Agency, 3.National Research Institute of Fisheries Engineering, Fisheries Research Agency)

[ACG43-P03] Evaluation of the function of seagrass to stabilize sediments

*Yoshiyuki TANAKA¹, Takashi Nakamura², Masaya Yoshikai², Toshihiro Miyajima³, kazuo nadaoka², Atsushi Watanabe², Fernando Siringan⁴, Masahiro Nakaoka⁵, Rempei Suwa⁶, Miguel Fortes⁴ (1. Center for Liberal Arts and Science, Hachinohe Institute of Technology,, 2.Department of Transdisciplinary Science and Engineering, School of Environment and Society, Tokyo Institute of Technology,, 3.Marine Biogeochemistry Group, Atmosphere and Ocean Research Institute, The University of Tokyo,, 4.Marine Science Institute, University of the Philippines, 5.Hokkaido University, 6.Forestry and Forest Products Research Institute )

[ACG43-P04] Carbon cycle and net ecosystem production of a mature sub-tropical mangrove forest on Ishigaki Island

*Ohtsuka Toshiyuki¹, Takeo Onishi², Shinpei YOSHITAKE¹, Hideshi Arai¹, Mitsutoshi Tomotsune³, Nobuhide Fujitake⁴, Morimaru Kida⁴, Miyuki Kondo⁵, Yasuo Iimura⁶, Kazutoshi Kinjo⁷ (1.River Basin Research Center, Gifu University, 2.Faculty of Applied Biological Sciences, Gifu University, 3.Faculty of Education and Integrated Arts and Sciences, Waseda University, 4.Graduate School of Agricultural Science, Kobe University, 5.National Institute for Environmental Studies, 6.School of Environmental Sciences, The University of Shiga Prefecture, 7.Faculty of Agriculture, University of the Ryukyus)

[ACG43-P05] Tempo-spatial variations in the concentration of dissolved inorganic carbon (DIC) exported in mangrove-dominated river in Ishigaki Island

*Shinpei YOSHITAKE¹, Miyuki Kondo², Takeo Onishi³, Mitsutoshi Tomotsune⁴, Kazutoshi Kinjyo⁵, Ohtsuka Toshiyuki¹ (1.River Basin Research Center, Gifu University, 2.National Institute for Environmental Studies, 3.Faculty of Applied Biological Sciences, Gifu University, 4.Faculty of Education and Integrated Arts and Sciences, Waseda University, 5.Faculty of Agriculture, University of Ryukyu)

[ACG43-P06] The estimation of CO₂ flux in subtropical coastal ecosystems using a numerical model

*Hirotada Moki¹, Akio Sohma², Takashi Shibuki³, Takeshi Toyoda³, Anirban Akhand¹, Kenta Watanabe¹, Tatsuki Tokoro^1,4, Tomomi Inoue⁵, Hiroya Yamano⁵, Masayuki Bannno¹, Yasuyuki Nakagawa^1,6, Hiroyuki Matsuda⁷, Tomohiro Kuwae¹ (1.Port and Airport Research Institute, 2.Osaka City University, 3.Mizuho Information and Research Institute, Inc., 4.National Research Institute of Fisheries and Environment in Inland Sea, 5.National Institute for Environmental Studies, 6.Kyushu University, 7.Yokohama National University)

[ACG43-P07] Carbonate production rate estimated based on both the biological calcification and the carbonate chemistry change of seawater in an isolated reef: its controlling factors

*Toko Tanaya¹, Tatsuki Tokoro², Hiroya Yamano³, Yoichi Watabe⁴, Tomohiro Kuwae¹ (1.Port and Airport Research Institute, 2.National Research Institute of Fisheries and Environment of Inland Sea, 3.National Institute for Environmental Studies, 4.Hokkaido University)

[ACG43-P08] Characteristics of water quality in the river of the Philippines

*Naoko Morimoto¹, Yu Umezawa², Atsushi Watanabe³, Maria LOURDES SAN DIEGO- McGlone⁴, Charissa M. Ferrera⁴, Genevieve Regino-Monponbanua⁴, Toshihiro Miyajima¹ (1.Department of Chemical Oceanography, Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Department of Environmental Science on Biosphere, Tokyo University of Agriculture and Technology, 3.Department of Transdisciplinary Science and Engineering, Tokyo Institute of Technology, 4. Marine Science Institute, University of the Philippines)

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