Atmospheric and Hydrospheric Sciences (A)
Session Sub-categoryComplex & General(CG)
Session IDA-CG44
TitleCoastal Ecosystems 2 Coral reefs, seagrass and macroalgal beds, and mangrove
Short TitleCoastal Marine Ecosystems 2
Main Convener NameYu Umezawa
AffiliationTokyo University of Agriculture and Technology
Co-Convener 1NameToshihiro Miyajima
AffiliationMarine Biogeochemistry Group, Division of Ocean-Earth System Science, Atmosphere and Ocean Research Institute, The University of Tokyo
Co-Convener 2NameAtsushi Watanabe
AffiliationThe ocean policy research institute, The Sasakawa peace foundation
Co-Convener 3NameTomihiko Higuchi
AffiliationAtmosphere and Ocean Research Institute, The University of Tokyo
Session LanguageJ
ScopeCoastal 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, 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 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.
Presentation FormatOral and Poster presentation
Invited AuthorsNaoki H. Kumagai (National Institute for Environmental Studies)
Shigeki Wada (University of Tsukuba)
Takashi Nakamura (School of Environment and Society, Tokyo Institute of Technology)
Yasuhiro Nakanishi (Tokyo University of Agriculture)
TimePresentation NoTitlePresenterAbstract
Oral Presentation May 28 PM1
13:50 - 14:10ACG44-01Evaluation of mangrove ecosystems as a dissolved iron supplying system to tropical coastal watersYasuhiro Nakanishi
14:10 - 14:25ACG44-02Dissolved organic carbon and optical properties in tropical and subtropical mangrove environmentsRaghab Ray
14:25 - 14:45ACG44-03Modeling coral polyp-scale bleaching phenomenon and upscaling to reef-scaleTakashi Nakamura
14:45 - 15:00ACG44-04Reversal of surface ocean acidification and recovery potential of calcification: ecology of proton concentration controlKazuhiko Ichikawa
15:00 - 15:15ACG44-05Revisit of massive Porites coral growth under the outbreak of crown-of-thorns starfish and thermal stress in Sekisei Lagoon, JapanKohki Sowa
Oral Presentation May 28 PM2
15:30 - 15:45ACG44-06Reconstructing sedimentation process of lagoon sediment in the Eastern Kume Island, RyukyusWataru Sano
15:45 - 16:00ACG44-07Addressing challenges in long-term coral reef monitoring: Statistical tools to address the effect of new methodsIwao Fujii
16:00 - 16:20ACG44-08Ocean currents and herbivory drive macroalgae-to-coral community shift under climate warmingNaoki H. Kumagai
16:20 - 16:35ACG44-09Estimation of temperature of seaweed bed vegetation boundary in the Western Seto Inland Sea using satellite SSTNaoki Yoshie
16:35 - 16:55ACG44-10Fate of macroalgal organic matter and its effects on in and outside of algal bedShigeki Wada
Presentation NoTitlePresenterAbstract
Poster Presentation May 28 AM2
ACG44-P01Characteristics of organic carbon in coastal carbonate sediment accompanied by seagrass meadowsToshihiro Miyajima
ACG44-P02Perceptions of Coastal Communities on Blue Carbon Ecosystems Services at the Municipalities of Eastern Samar and Western Visayas, PhilippinesJay Mar Dioquito Quevedo
ACG44-P03Numerical simulation of typhoon events in Sekisei Lagoon, Okinawa, Japan using a coupled ocean-wave modelLawrence Patrick Cases Bernardo
ACG44-P04Study of macrobenthic community structure at mesophotic depths in the South Ryukyus based on ROV and AUV seafloor imagingMarc Humblet
ACG44-P05Enhancement of antioxidant activity of scleractinian coral Galaxea Fascicularis by feeding treatment.Hiroyuki Fujimura
ACG44-P06Effects of environmental stresses on coral bleachingTomihiko Higuchi