[A-HW22] Material transportation and cycling in watershed ecosystems; from headwaters to coastal areas

Fri. Jun 4, 2021 1:45 PM - 3:15 PM Ch.12 (Zoom Room 12)

convener:Morihiro Maeda(Okayama University), Tomohisa Irino(Faculty of Environmental Earth Science, Hokkaido University), Shin-ichi Onodera(Graduate School of Advanced Science and Engineering, , Hiroshima University), Adina Paytan(University of California Santa Cruz), Chairperson:Tomohisa Irino(Faculty of Environmental Earth Science, Hokkaido University)

This session aims to synthetize watershed sciences in order to understand dynamic processes in transportation and cycling of materials and nutrients in watershed ecosystems from headwaters to coastal areas. The session will integrate various inter-disciplinary researches including limnology, ground water hydrology, coastal oceanography, meteorology, soil science, sedimentology, forestry, agriculture, fishery, ecology, social science and so on. This session calls for ideas on new methods for understanding the watershed ecosystems, such as tracers and molecular techniques, hydrological modeling, paleontological approaches, and chemical analyses, in order to elucidate physical, chemical and biological mechanisms for shedding light on natural phenomena and their spatio-temporal variations in complex and dynamic aquatic systems under human and climate impacts. Both in laboratory and field studies, social-scientific evaluation of ecosystem services and social-ecological systems will be also welcomed. Through this session, we would like to facilitate interdisciplinary collaboration among participants to create new knowledge on watershed sciences.

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1:45 PM - 2:00 PM

[AHW22-12] Large changes in sediment input based on multi-century sediment record in Bolinao, Pangasinan, Philippines

★Invited Papers

*Siringan Fernando¹, Fermina Genson¹, Ronald Lloren¹ (1.The Marine Science Institute University of the Philippines Diliman)

2:00 PM - 2:15 PM

[AHW22-13] Development of a method to reconstruct past winter monsoon variability based on the inter-annual variabilities of river discharges and snowfall in Hokkaido, northern Japan

*Airi Maruyama¹, Tomohisa Irino¹ (1.Biogeochemistry Course, Earth System Science, Faculty of Environmental Earth Science, Hokkaido University)

2:15 PM - 2:30 PM

[AHW22-14] Effects of Forest Growth in Different Vegetation Communities to Forest Catchment Water Balance

*Kunyang Wang¹, Shin-ichi Onodera¹, Mitsuyo Saito², Yuta Shimizu³, Toru Iwata² (1.Graduate School of Integrated Arts and Science, Hiroshima University, 2.Faculty of Environmental Science and Technology, Okayama University, 3.National Agriculture and Food Research Organization)

2:30 PM - 2:45 PM

[AHW22-15] Water discharge at forested watersheds throughout Japan by using SWAT

*Naohiro Imamura¹, Kunyang Wang², Shin-ichi Onodera², Yuta Shimizu³, Masahiro Kobayashi¹, Takanori Shimizu¹, Naoyuki Yamashita¹, Yoshiki Shinomiya¹, Koji Tamai¹, Shinji Sawano¹, Shin'ichi Iida¹, Naoki Kabeya¹, Akira Shimizu¹, Yoshio Tsuboyama¹ (1.Forestry and Forest Products Research Institute, 2.Hiroshima University, 3.National Agriculture and Food Research Organization)

2:45 PM - 3:00 PM

[AHW22-16] Groundwater flow system inferred by estimates of hydrological, thermal and chemical budgets in Okama Crater Lake, Zao Volcano, Japan

*Kazuhisa A. Chikita¹, Akio Goto², Jun Okada³, Satoshi Miura⁴, Mare Yamamoto⁴ (1.Arctic Research Center, Hokkaido University, 2.Center for Northeast Asian Studies, Tohoku University, 3.Volcanology Research Department, Meteorological Research Institute, 4.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Faculty of Science, Tohoku University)

3:00 PM - 3:15 PM

[AHW22-17] Hypoxia and methanotrophy in a large monomictic Lake Biwa under climate changes

*Noboru Okuda¹, Tohru Ikeya², Megumu Fujibayashi³, Masayuki Ito⁴, Ken'ichi Osaka⁵ (1.Kobe University, 2.Research Institute for Humanity & Nature, 3.Kyushu University, 4.University of Hyogo, 5.University of Shiga Prefecture)

Session information