Japan Geoscience Union Meeting 2018

Ken'ichi Osaka

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Speaker, Author, Co-Author

Sun. May 20, 2018 1:45 PM - 3:15 PM 105 (1F International Conference Hall, Makuhari Messe)

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

[A-HW20] Materials transport and nutrient cycles in watersheds; Human and climate impacts

2:10 PM - 2:25 PM

[AHW20-02] Biodiversity and phosphorus cycling in the river ecosystem

*Noboru Okuda1, Takuya Ishida1, Yoshitoshi Uehara1, Tohru Ikeya1, Satoshi Asano2, Tomoya Iwata3, Chia-Ying Ko4, Elfritzson Peralta5, Osbert Leo Privaldos6, Irisse Bianca De Jesus5, Ellis Mika Triño5, Ken'ichi Osaka7, Ichiro Tayasu1 (1.Research Institute for Humanity and Nature, 2.Lake Biwa Environmental Research Institute, 3.University of Yamanashi, 4.National Taiwan University, 5.University of Santo Tomas, 6.Laguna Lake Development Authority, 7.University of Shiga Prefecture)

Mon. May 21, 2018 3:30 PM - 5:00 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

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

[A-HW20] Materials transport and nutrient cycles in watersheds; Human and climate impacts

[AHW20-P17] Nitrate Dual-Stable Isotope Analysis Identifies Sources of Groundwater Nitrogen Pollution in the Silang-Sta. Rosa Subwatershed of Laguna de Bay

*Osbert Leo Alcantara Privaldos1,2, Ken'ichi Osaka3, Yoshitoshi Uehara4, Asano Satoshi5, Lei Fujiyoshi4, Chikage Yoshimizu4, Ichiro Tayasu4, Adelina C. Santos-Borja1, Maria Pythias B. Espino2, Noboru Okuda4 (1.Laguna Lake Development Authority, 2.Institute of Chemistry, University of the Philippines-Diliman, 3.The University of Shiga Prefecture, 4.Research Institute for Humanity and Nature, 5.Lake Biwa Environmental Research Institute)

Mon. May 21, 2018 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

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

[A-HW20] Materials transport and nutrient cycles in watersheds; Human and climate impacts

[AHW20-P17] Nitrate Dual-Stable Isotope Analysis Identifies Sources of Groundwater Nitrogen Pollution in the Silang-Sta. Rosa Subwatershed of Laguna de Bay

*Osbert Leo Alcantara Privaldos1,2, Ken'ichi Osaka3, Yoshitoshi Uehara4, Asano Satoshi5, Lei Fujiyoshi4, Chikage Yoshimizu4, Ichiro Tayasu4, Adelina C. Santos-Borja1, Maria Pythias B. Espino2, Noboru Okuda4 (1.Laguna Lake Development Authority, 2.Institute of Chemistry, University of the Philippines-Diliman, 3.The University of Shiga Prefecture, 4.Research Institute for Humanity and Nature, 5.Lake Biwa Environmental Research Institute)

Thu. May 24, 2018 1:45 PM - 3:15 PM 104 (1F International Conference Hall, Makuhari Messe)

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

[A-HW23] Residence time of groundwater / surface water and water / mass cycle processes in watershed

2:00 PM - 2:15 PM

[AHW23-07] Comparison of controlling factors of streamwater mean residence time across headwater catchments using water stable isotope

*Masanori Katsuyama1, Hirokazu Haga2, Keitaro Fukushima3, Tomoki Oda4, Masamitsu Fujimoto5, Ken'ichi Osaka6, Ryohei Nagano7 (1.Center for the Promotion of Interdisciplinary Education and Research, Kyoto University, 2.Faculty of Agriculture, Tottori University, 3.Center for Ecological Research, Kyoto University, 4.Graduate school of agricultural and Life science, The University of Tokyo, 5.College of Science and Engineering, Ritsumeikan University , 6.School of Environmental Science, The University of Shiga Prefecture, 7.Natural Environmental Engineering Department, Technical Research Institute, Obayashi Corporation)