JpGU-AGU Joint Meeting 2026

Session information

[E] Poster

A (Atmospheric and Hydrospheric Sciences ) » A-HW Hydrology & Water Environment

[A-HW36] Material transport, biodiversity and environmental changes in watersheds from headwaters to coasts

Thu. May 28, 2026 5:15 PM - 7:00 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

This session aims to synthetize watershed sciences in order to understand dynamical processes of material transport, biodiversity and environmental changes in watersheds from mountain tops to receiving water. The session will be integrating a variety of research disciplines including hydrology, limnology, meteorology, pedology, sedimentology, coastal oceanography, forestry, agriculture, fishery and more. The watershed sciences also challenge us to solve environmental issues emerged in the watersheds through our profound understanding of relations between humanity and nature in social-ecological systems. For instance, on one hand, human land uses alter dynamics of water, sediments, nutrients and pollutants on watershed scales, while changing climates may alter the frequency and intensity of natural disaster, sometimes having catastrophic effects on the watershed systems. On the other hand, globalization causes transboundary pollution and biological invasion between watersheds. Such anthropogenic disturbances, in turn, reduce biodiversity and thus deteriorate its ecosystem services from headwaters to coasts, posing a risk to sustainable human development. The dogma of watershed sciences may lead us to the solution for sustainable future of social-ecological watershed systems as the basis of our existence. This session also calls for ideas on new methods for the watershed sciences, such as tracer and molecular technique, modeling and paleontological approaches, laboratory and field experiments, and so on, in order to elucidate biological, chemical and physical mechanisms for shedding light on natural phenomena and their changes over time in complex and dynamic watershed systems. Through this session, we would like to facilitate interdisciplinary collaboration among participants to create new knowledge on watershed sciences.

5:15 PM - 7:00 PM

*Francis Jhun Tin-ao Macalam1,2, Kunyang Wang1, Shin-ichi Onodera1, Mitsuyo Saito1, Yuko Nagano3, Masatoshi Yamazaki4, Nang Yu War1 (1. Graduate School of Advance Science and Engineering, Hiroshima University, 2. Department of Environmental Science and Technology, University of Science and Technology of Southern Philippines, 3. Japan Forest Technology Association, 4. PASCO Corporation)

5:15 PM - 7:00 PM

*Kelly Tiku Tarh1, Shin-ichi Onodera1, Mitsuyo Saito1, Miho Awamura2, David Nyamweya Moenga1, Takuya Ishida1, Keisuke Koba3, Vinicius Rogel Paulino de Oliveira Oliveira4 (1. Hiroshima University, Graduate School of Advanced Science and Engineering, 2. Hiroshima University, School of Integrated Arts and Science, 3. Kyoto University, Center for Ecological Research (CER), 4. Sao Paulo University)

5:15 PM - 7:00 PM

*DAVID NYAMWEYA MOENGA1, Shin-ichi Onodera1, Mitsuyo Saito1, Takuya Ishida1, Ki-Cheol Shin3, Miho Awamura2, KELLY TARH TIKU1 (1. Graduate School of Advanced Science and Engineering, Hiroshima University, 2. School of Advanced Science and Engineering, Hiroshima University, 3. Research Institute for Humanity and Nature (RIHN))

5:15 PM - 7:00 PM

*Toma Tanigami1, Nanami Mizusawa1, Alice Yamazaki1, Takafumi Ogura1, Ryota Ide1, Shugo Watabe1, Mariko Iijima2, Jun Yasumoto3,4, Daiki Tomojiri-Kadotani3, Chris Leong3, Takashi Nakamura4, Ryuichi Shinjo4, Takahiro Hosono5, Ko Yasumoto1 (1. Kitasato university School of Marine Biosciences, 2. National Institute of Advanced Industrial Science and Technology, 3. Research Institute for Humanity and Nature, 4. University of the Ryukyus, 5. Kumamoto University)

5:15 PM - 7:00 PM

*Alice Yamazaki1, Takafumi Ogura1, Ryota Ide1, Toma Tanigami1, Nanami Mizusawa1, Shugo Watabe1, Mariko Iijima2, Jun Yasumoto3,4, Daiki Tomojiri-Kadotani3, Chris Leong3, Takashi Nakamura4, Ryuichi Shinjo4, Takahiro Hosono5, Ko Yasumoto1 (1. Kitasato University School of Marine Biosciences, 2. The National Institute of Advanced Industrial Science and Technology, 3. Research Institute for Humanity and Nature, 4. University of Ryukyus, 5. Kumamoto University)

5:15 PM - 7:00 PM

*Hirata Nanoka1, Takahiro Hosono2, Ko Yasumoto3, Jun Yasumoto4,5, Daiki Tomojiri4, Mariko Iijima6, Ryuichi Shinjo7,4 (1. Graduate School of Science and Technology, Kumamoto University, 2. Faculty of Advanced Science and Technology, Kumamoto University, 3. School of Marine Biosciences, Kitasato University, 4. Research Institute for Humanity and Nature, 5. Faculty of Agriculture, University of the Ryukyus, 6. National Institute of Advanced Industrial Science and Technology, 7. Faculty of Science, University of the Ryukyus)

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