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

[A-HW16] Water and material transport and cycles in catchment ecosystems: from headwater to coastal area

Thu. May 26, 2016 10:45 AM - 12:15 PM 302 (3F)

Convener:*Seiko Yoshikawa(Narional Institute for Agro-Environmental Sciences), Masahiro Kobayashi(Forestry and Forest Products Research Institute), Noboru Okuda(Research Institute for Humanity and Nature), Shin-ichi Onodera(Graduate School of Integrated and Arts Sciences, Hiroshima University), Kazuhisa Chikita(Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University), Tomohisa Irino(Faculty of Environmental Earth Science, Hokkaido University), Shinji Nakaya(Department of Water Environment and Civil Engineering, Faculty of Engineering, Shinshu University), Mitsuyo Saito(Graduate School of Environmental and Life Science, Okayama University), Chair:Kazuhisa Chikita(Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University), Shinji Nakaya(Department of Water Environment and Civil Engineering, Faculty of Engineering, Shinshu University)

We focus on water and material transport and cycle in catchment ecosystems. The area includes headwater to coastal or estuarine area. We welcome these new topics in various scales and fields. For example, material transport in soil, slope and catchment scale, suspended material transport interacting with dissolved material, groundwater flow system and material transport, heterogeneity and dynamics, scale up from soil to watershed, effect of human activity and climate change for long period, N and P cycles, contaminant transport from watershed to coastal and ocean areas and its effect, river - groundwater interaction, new tracer methods, catchment ecosystems, and sediment analysis etc.

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10:45 AM - 11:00 AM

[AHW16-07] Dynamics of sewage-derived nitrogen in the coastal area of a mega city

*Mitsuyo Saito¹, Shin-ichi Onodera², Guangzhe Jin², Masanobu Taniguhchi³, Yuta Shimizu⁴ (1.Graduate School of Environmental and Life Science, Okayama University, 2.Graduate School of Integrated Arts and Sciences, Hiroshima University, 3.Wakayama University, 4.JSPS PD, NARO/WARC)

11:00 AM - 11:15 AM

[AHW16-08] Accurate and precise quantification of atmospheric nitrate in streams draining land of various uses by using triple oxygen isotopes as tracers

*Urumu Tsunogai¹, Takanori Miyauchi¹, Takuya Ohyama¹, Daisuke D. Komatsu¹, Fumiko Nakagawa¹, Yusuke Obata^1,2 (1.Graduate School of Environmental Studies, Nagoya University, 2.Faculty of Bioresources, Mie University)

11:15 AM - 11:30 AM

[AHW16-09] Landscape stoichiometry and biological nutrient recycling in the watershed ecosystem

*Noboru Okuda¹, Tomoya Iwata², Takuya Hayashi³, Aya Murakami⁴, Ichiro Tayasu¹, Naoto Ishikawa⁵, Jun-ichi Okano⁴, Hiroyuki Togashi⁶, Shin-ichi Nakano⁴, Yoichiro Sakai⁷, Uhram Song⁸, Ken-ichi Osaka⁹, Abigail P Cid¹⁰ (1.Research Institute for Humanity and Nature, 2.Fac Life & Env Sci, Univ Yamanashi, 3.Fac Engineer, Univ Yamanashi, 4.CER, Kyoto Univ, 5.JAMSTEC, 6.Tohoku Nat Fish Res Inst, 7.LBERI, 8.College Appl Life Sci, Jeju Nat Univ, 9.School Env Sci, Univ Shiga Pref, 10.Osaka Univ)

11:30 AM - 11:45 AM

[AHW16-10] Physiological responses in phytoplankton under nutrient-limited epilimnion in north basin of Lake Biwa

*Syuhei Ban¹, Risa Ibuki¹ (1.The University of Shiga Prefecture)

11:45 AM - 12:00 PM

[AHW16-11] Chromatographic determination of trace orthophosphate in water of North basin of Lake Biwa

*Masahiro Maruo¹, Haruki Miyashita¹, Mana Ishimaru¹, Hajime Obata² (1.Department of Ecosystem Studies, School of Environmental Science, The University of Shiga Prefecture, 2.Atmosphere and Ocean Research Institute, The University of Tokyo)

12:00 PM - 12:15 PM

[AHW16-12] Evaluation of inflowing nutrients from groundwater on nutrient input in Lake Biwa

*Shin-ichi Onodera¹, Mitsuyo Saito², Syuhei Ban³, Minami Morita¹, Guangzhe Jin¹, Yusuke Tomozawa¹, Noboru Okuda⁴ (1.Graduate School of Integrated and Arts Sciences, Hiroshima University, 2.Okayama University, 3.Siga Prifecture University, 4.Research Institute of Human and Nature)