Wed. May 28, 2025 1:45 PM - 3:15 PM Exhibition Hall Special Setting (3) (Exhibition Hall 7&8, Makuhari Messe)

[J] Oral
| A (Atmospheric and Hydrospheric Sciences )
| A-CG Complex & General

[A-CG51] Coastal Ecosystems-2. Coral reefs, seagrass and macroalgal beds, and mangroves

convener:Yu Umezawa(Tokyo University of Agriculture and Technology), Tomihiko Higuchi(Graduate School of Human and Environmental Studies, Kyoto University), Takashi Nakamura(School of Environment and Society, Institute of Science Tokyo), Kenta Watanabe(Port and Airport Research Institute), Chairperson:Yu Umezawa(Tokyo University of Agriculture and Technology), Kenta Watanabe(Port and Airport Research Institute), Takashi Nakamura(School of Environment and Society, Institute of Science Tokyo), Tomihiko Higuchi(Atmosphere and Ocean Research Institute, The University of Tokyo)

Wed. May 28, 2025 3:30 PM - 5:00 PM Exhibition Hall Special Setting (3) (Exhibition Hall 7&8, Makuhari Messe)

[J] Oral
| A (Atmospheric and Hydrospheric Sciences )
| A-CG Complex & General

[A-CG51] Coastal Ecosystems-2. Coral reefs, seagrass and macroalgal beds, and mangroves

convener:Yu Umezawa(Tokyo University of Agriculture and Technology), Tomihiko Higuchi(Graduate School of Human and Environmental Studies, Kyoto University), Takashi Nakamura(School of Environment and Society, Institute of Science Tokyo), Kenta Watanabe(Port and Airport Research Institute), Chairperson:Takashi Nakamura(School of Environment and Society, Institute of Science Tokyo), Tomihiko Higuchi(Atmosphere and Ocean Research Institute, The University of Tokyo), Yu Umezawa(Tokyo University of Agriculture and Technology), Kenta Watanabe(Port and Airport Research Institute)

Fri. May 30, 2025 10:45 AM - 12:15 PM 101 (International Conference Hall, Makuhari Messe)

[J] Oral
| H (Human Geosciences )
| H-CG Complex & General

[H-CG23] Cultural Hydrology

convener:Takashi Nakamura(International Research Center for River Basin Environment, University of YAMANASHI), Yasuhisa Kondo(Research Institute for Humanity and Nature), Masaya Yasuhara(Rissho Univ.), Chairperson:Takashi Nakamura(International Research Center for River Basin Environment, University of YAMANASHI), Yasuhisa Kondo(Research Institute for Humanity and Nature)

Fri. May 30, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[J] Poster
| H (Human Geosciences )
| H-CG Complex & General

[H-CG23] Cultural Hydrology

convener:Takashi Nakamura(International Research Center for River Basin Environment, University of YAMANASHI), Yasuhisa Kondo(Research Institute for Humanity and Nature), Masaya Yasuhara(Rissho Univ.)

Sun. May 25, 2025 3:30 PM - 5:00 PM 103 (International Conference Hall, Makuhari Messe)

[E] Oral
| A (Atmospheric and Hydrospheric Sciences )
| A-HW Hydrology & Water Environment

[A-HW25] Near Surface Investigation and Modeling for Groundwater Resources Assessment and Conservation

4:45 PM - 5:00 PM

[AHW25-12] Evaluating Mountain Front and Mountain Block Recharge using stable isotopes and Hydrogeological Groundwater Flow Model in Yamanashi, Japan

*Cuong Quoc Nguyen¹, Takashi Nakamura¹, Tatsuki Kimura¹ (1.International Research Center for River Basin Environment, University of YAMANASHI)

Fri. May 30, 2025 9:00 AM - 10:30 AM Exhibition Hall Special Setting (2) (Exhibition Hall 7&8, Makuhari Messe)

[J] Oral
| A (Atmospheric and Hydrospheric Sciences )
| A-HW Hydrology & Water Environment

[A-HW30] Isotope Hydrology 2025

9:50 AM - 10:05 AM

[AHW30-03] Groundwater Contamination by Bird Droppings at Takashima Island in Kojima Bay, Okayama Prefecture

*Masaya Yasuhara¹, Kazuyoshi Asai², Seongwon Lee¹, Takashi Nakamura³, Yuki Itoh⁴ (1.Rissho Univ., 2.Geo Science Laboratory, 3.Univ. Yamanashi, 4.Graduate School, Rissho Univ.)

10:05 AM - 10:20 AM

[AHW30-04] Evolution of shallow urban groundwater chemistry in Meguro-dai, southeastern Musashino Upland, downtown Tokyo, Japan

*Yuki Itoh¹, Masaya Yasuhara², Seongwon Lee², Takashi Nakamura³, Kazuyoshi Asai⁴, Masaaki Takahashi⁵ (1.Graduate School of Geo-Environmental Science, Rissho University , 2.Faculty of Geo-Environmental Science, Rissho University, 3.International Research Center for River Basin Environment, University of YAMANASHI, 4.Geo Science Laboratory, 5.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST))

Fri. May 30, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[J] Poster
| A (Atmospheric and Hydrospheric Sciences )
| A-HW Hydrology & Water Environment

[A-HW30] Isotope Hydrology 2025

5:15 PM - 7:15 PM

[AHW30-P05] Identification of the process of water quality formation in surface water in the Minami-Alps region

*Tatsuki Kimura¹, Takashi Nakamura² (1.Interdisciplinary Center for River Basin Environment , 2.Interdisciplinary Center for River Basin Environment )

5:15 PM - 7:15 PM

[AHW30-P06] Geochemical Study on Nitrogen Pollution of Surface and Groundwater in Arakawa River Fan, Saitama Prefecture, Japan

Ayane Miura¹, *Masaya Yasuhara², Seongwon Lee², Yuki Itoh³, Takashi Nakamura⁴ (1.Undergraduate student, Rissho Univ., 2.Rissho Univ., 3.Graduate School, Rissho Univ., 4.Univ. Yamanashi)

5:15 PM - 7:15 PM

[AHW30-P07] Estimation of the origin of nitrate-nitrogen in Lake Kawaguchi based on nitrogen and oxygen stable isotope ratios

*Shinya Yamamoto¹, Yuya Hasegawa², Takashi Nakamura³ (1.Mount Fuji Research Institute, Yamanashi Prefectural Government, 2.Yamanashi Institute for Public Health and Environment, 3.Yamanashi University, Interdisciplinary Centre for River Basin Environment)

Tue. May 27, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[J] Poster
| A (Atmospheric and Hydrospheric Sciences )
| A-HW Hydrology & Water Environment

[A-HW31] Water Environment and Geology in Urban Areas

5:15 PM - 7:15 PM

[AHW31-P02] Issues and challenges of a multi-tracer method for quantifying sewage leakage in urban areas

*Takeshi Hayashi¹, Takashi Nakamura² (1.Faculty of Education and Human Studies, Akita University, 2.International Research Center for River Basin Environment, University of Yamanashi)

Thu. May 29, 2025 10:45 AM - 12:15 PM Exhibition Hall Special Setting (5) (Exhibition Hall 7&8, Makuhari Messe)

[E] Oral
| A (Atmospheric and Hydrospheric Sciences )
| A-CG Complex & General

[A-CG41] Satellite Earth Environment Observation

12:00 PM - 12:15 PM

[ACG41-18] Advancing Shallow Coral Reef Monitoring: A Nonlinear Spectral Unmixing Approach for Simultaneous Detection of Benthic Cover, Water Quality, and Bathymetry

*Palika Wannawilai¹, Takashi Nakamura¹ (1.Institute of Science Tokyo)

Wed. May 28, 2025 1:45 PM - 3:15 PM Exhibition Hall Special Setting (3) (Exhibition Hall 7&8, Makuhari Messe)

[J] Oral
| A (Atmospheric and Hydrospheric Sciences )
| A-CG Complex & General

[A-CG51] Coastal Ecosystems-2. Coral reefs, seagrass and macroalgal beds, and mangroves

2:00 PM - 2:15 PM

[ACG51-02] Determination of tropical seagrass nutrient uptake rates and application in ocean-ecosystem numerical modelling

*Yuta A. Takagi¹, Takashi Nakamura¹, Yuichi Kawakami¹ (1.School of Environment and Society, Institute of Science Tokyo)

Wed. May 28, 2025 3:30 PM - 5:00 PM Exhibition Hall Special Setting (3) (Exhibition Hall 7&8, Makuhari Messe)

[J] Oral
| A (Atmospheric and Hydrospheric Sciences )
| A-CG Complex & General

[A-CG51] Coastal Ecosystems-2. Coral reefs, seagrass and macroalgal beds, and mangroves

3:30 PM - 3:55 PM

[ACG51-07] Hydrodynamics and sediment transport in mangrove forests: field measurement and modelling

★Invited Papers

*Yoshikai Masaya¹, Takashi Nakamura², Kazuo Nadaoka³, Julia Mullarney¹ (1.University of Waikato, 2.Institute of Science Tokyo, 3.Kajima Technical Research Institute)

3:55 PM - 4:10 PM

[ACG51-08] Integrating Multiscale Modeling and Monitoring Approaches for Mangrove-Rich Coastal Systems in Data-Scarce Regions: A Case Study in Batan Bay, Philippines

*Ahmed Eladawy¹, Takashi Nakamura¹ (1.Department of Transdisciplinary Science and Engineering, School of Environment and Society, Institute of Science Tokyo)

4:40 PM - 4:55 PM

[ACG51-11] Changes in coral connectivity pathways under future climate scenarios along the Japanese coast

*Gabriel Lucas Xavier da Silva¹, Takashi Nakamura¹ (1.Department of Transdisciplinary Science and Engineering, School of Environment and Society, Institute of Science Tokyo)

Wed. May 28, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[J] Poster
| A (Atmospheric and Hydrospheric Sciences )
| A-CG Complex & General

[A-CG51] Coastal Ecosystems-2. Coral reefs, seagrass and macroalgal beds, and mangroves

5:15 PM - 7:15 PM

[ACG51-P01] Visualization of seagrass buffering efficiency to terrestrial impacts on coral reef area using a coupled pelagic-benthic model incorporating CNP isotopes/tracers

*Takashi Nakamura¹, Yuta A. Takagi¹, Masataka Muto², Jorge Luis Suarez Caballero¹, Haruko Kurihara³, Yu Umezawa⁴, Toshihiro Miyajima⁵ (1.School of Environment and Society, Institute of Science Tokyo, 2.Tokyo Institute of Technology (present address: JAXA), 3.University of the Ryukyus, 4.Tokyo University of Agriculture and Technology, 5.AORI, The University of Tokyo)

5:15 PM - 7:15 PM

[ACG51-P05] Implementation of a watershed model for developing an integrated land-ocean model in the Republic of Palau

*Naoki Ban¹, Takashi Nakamura¹, Yu Umezawa² (1.Institute of Science Tokyo, 2.Tokyo University of Agriculture and Technology)

Wed. May 28, 2025 10:45 AM - 12:15 PM Exhibition Hall Special Setting (3) (Exhibition Hall 7&8, Makuhari Messe)

[J] Oral
| A (Atmospheric and Hydrospheric Sciences )
| A-CG Complex & General

[A-CG53] Coastal Ecosystems - 1. Water Cycle and Land-Ocean Interactions

10:45 AM - 11:00 AM

[ACG53-07] Evaluation of nutrient flux and carbonate system in subtropical shallow seagrass meadows

Kento Suzuki¹, *Yu Umezawa¹, Keisuke Umebayashi¹, Kurihara Haruko², Takashi Nakamura³, Toshihiro Miyajima⁴ (1.Tokyo University of Agriculture and Technology, 2.The University of the Ryukyus, 3.Institute of Science Tokyo, 4.Atmosphere and Ocean Research Institute, the University of Tokyo)

Fri. May 30, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[J] Poster
| H (Human Geosciences )
| H-CG Complex & General

[H-CG23] Cultural Hydrology

5:15 PM - 7:15 PM

[HCG23-P03] Results of a Survey on the Utilization of Local Water Sources in the Noto Peninsula

*Takashi Nakamura¹, Kei Nishida¹, Tatsuru Kamei¹ (1.International Research Center for River Basin Environment, University of YAMANASHI)

Takashi Nakamura

Convener, Chairperson

[A-CG51] Coastal Ecosystems-2. Coral reefs, seagrass and macroalgal beds, and mangroves

[A-CG51] Coastal Ecosystems-2. Coral reefs, seagrass and macroalgal beds, and mangroves

[H-CG23] Cultural Hydrology

[H-CG23] Cultural Hydrology

Speaker, Author, Co-Author

[A-HW25] Near Surface Investigation and Modeling for Groundwater Resources Assessment and Conservation

[AHW25-12] Evaluating Mountain Front and Mountain Block Recharge using stable isotopes and Hydrogeological Groundwater Flow Model in Yamanashi, Japan

[A-HW30] Isotope Hydrology 2025

[AHW30-03] Groundwater Contamination by Bird Droppings at Takashima Island in Kojima Bay, Okayama Prefecture

[AHW30-04] Evolution of shallow urban groundwater chemistry in Meguro-dai, southeastern Musashino Upland, downtown Tokyo, Japan

[A-HW30] Isotope Hydrology 2025

[AHW30-P05] Identification of the process of water quality formation in surface water in the Minami-Alps region

[AHW30-P06] Geochemical Study on Nitrogen Pollution of Surface and Groundwater in Arakawa River Fan, Saitama Prefecture, Japan

[AHW30-P07] Estimation of the origin of nitrate-nitrogen in Lake Kawaguchi based on nitrogen and oxygen stable isotope ratios

[A-HW31] Water Environment and Geology in Urban Areas

[AHW31-P02] Issues and challenges of a multi-tracer method for quantifying sewage leakage in urban areas

[A-CG41] Satellite Earth Environment Observation

[ACG41-18] Advancing Shallow Coral Reef Monitoring: A Nonlinear Spectral Unmixing Approach for Simultaneous Detection of Benthic Cover, Water Quality, and Bathymetry

[A-CG51] Coastal Ecosystems-2. Coral reefs, seagrass and macroalgal beds, and mangroves

[ACG51-02] Determination of tropical seagrass nutrient uptake rates and application in ocean-ecosystem numerical modelling

[A-CG51] Coastal Ecosystems-2. Coral reefs, seagrass and macroalgal beds, and mangroves

[ACG51-07] Hydrodynamics and sediment transport in mangrove forests: field measurement and modelling

★Invited Papers

[ACG51-08] Integrating Multiscale Modeling and Monitoring Approaches for Mangrove-Rich Coastal Systems in Data-Scarce Regions: A Case Study in Batan Bay, Philippines

[ACG51-11] Changes in coral connectivity pathways under future climate scenarios along the Japanese coast

[A-CG51] Coastal Ecosystems-2. Coral reefs, seagrass and macroalgal beds, and mangroves

[ACG51-P01] Visualization of seagrass buffering efficiency to terrestrial impacts on coral reef area using a coupled pelagic-benthic model incorporating CNP isotopes/tracers

[ACG51-P05] Implementation of a watershed model for developing an integrated land-ocean model in the Republic of Palau

[A-CG53] Coastal Ecosystems - 1. Water Cycle and Land-Ocean Interactions

[ACG53-07] Evaluation of nutrient flux and carbonate system in subtropical shallow seagrass meadows

[H-CG23] Cultural Hydrology

[HCG23-P03] Results of a Survey on the Utilization of Local Water Sources in the Noto Peninsula