[M-IS14] Biogeochemistry

Fri. Jun 3, 2022 11:00 AM - 1:00 PM Online Poster Zoom Room (29) (Ch.29)

convener:Keisuke Koba(Center for Ecological Research, Kyoto University), convener:Hideaki Shibata(Field Science Center fot Northern Biosphere, Hokkaido University), Naohiko Ohkouchi(Japan Agency for Marine-Earth Science and Technology), convener:Youhei Yamashita(Faculty of Environmental Earth Science, Hokkaido University), Chairperson:Keisuke Koba(Center for Ecological Research, Kyoto University)

Biogeochemistry is an interdisciplinary study field including ecology, geochemistry, oceanography, limnology, hydrology, soil science, and environmental sciences. Respective researches have tended to be conducted separately so far. This session aims to provide a common platform for biogeochemists of different disciplines, which facilitates the interactive discussion and information exchanges for the further development of biogeochemical studies.

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11:00 AM - 1:00 PM

[MIS14-P01] Contrasting of nitrogen leaching from Moso bamboo forest and Japanese cedar forest: Role of vegetation in retaining nitrogen

*Dongchuan Fu¹, Masaaki Chiwa¹ (1.Kyushu University)

11:00 AM - 1:00 PM

[MIS14-P02] Factors controlling the spatial distribution of dissolved organic matter with changes in the C/N ratio from headwaters to lower reaches of the Ishikari River

*Yuji Takaki¹, Keisuke Hattori¹, Youhei Yamashita^1,2 (1.Graduate School of Environmental Science, Hokkaido University, 2.Faculty of Environmental Earth Science, Hokkaido University)

11:00 AM - 1:00 PM

[MIS14-P03] Determination on the Triple Oxygen Isotopic Composition of Nitrous Oxide Emitted from Soils

*Fumiko Nakagawa¹, Tianzheng Huang¹, Urumu Tsunogai¹, Weitian Ding¹, Masanori Ito¹, Yongwon Kim² (1.Graduate School of Environmental Studies, Nagoya University, 2.International Arctic Research Center, University of Alaska Fairbanks)

11:00 AM - 1:00 PM

[MIS14-P04] ORP Controlled Facultative Anaerobic Nitrate and Nitrite Reduction in a Groundwater Mesocosm

*Ned Murphy¹ (1.Central Planet Repair, LLC)

11:00 AM - 1:00 PM

[MIS14-P05] Vertical distributions in the level and sulfur isotope ratio of sulfide in sediment of the Lake Biwa during stratification period

*Yuji Onishi¹, Toshiro Yamanaka², Keisuke Koba¹ (1.Center for Ecological Research, Kyoto University, 2.Tokyo University of Marine Science and Technology)

11:00 AM - 1:00 PM

[MIS14-P06] A direct determination of N₂O reduction potential in soil using ¹⁵N₂O tracer

*Ryo Shingubara¹, Yasuhiro Nakajima², Hikaru Uno², Koji Ito¹, Hiroaki Shimada¹, Kiwamu Minamisawa³, Rota Wagai¹ (1.Institute for Agro-Environmental Sciences, NARO, 2.Research Center for Advanced Analysis, NARO, 3.Graduate School of Life Sciences, Tohoku Univ.)

11:00 AM - 1:00 PM

[MIS14-P07] Estimation of spatiotemporal distribution of ¹³⁷Cs activity concentration in the litter layer of forest ecosystem in Fukushima using FoRothCs model

*Kazuya Nishina¹, Seiji Hayashi¹ (1.NIES National Institute of Environmental Studies)

Session information

[M-IS14] Biogeochemistry

[MIS14-P01] Contrasting of nitrogen leaching from Moso bamboo forest and Japanese cedar forest: Role of vegetation in retaining nitrogen

[MIS14-P02] Factors controlling the spatial distribution of dissolved organic matter with changes in the C/N ratio from headwaters to lower reaches of the Ishikari River

[MIS14-P03] Determination on the Triple Oxygen Isotopic Composition of Nitrous Oxide Emitted from Soils

[MIS14-P04] ORP Controlled Facultative Anaerobic Nitrate and Nitrite Reduction in a Groundwater Mesocosm

[MIS14-P05] Vertical distributions in the level and sulfur isotope ratio of sulfide in sediment of the Lake Biwa during stratification period

[MIS14-P06] A direct determination of N₂O reduction potential in soil using ¹⁵N₂O tracer

[MIS14-P07] Estimation of spatiotemporal distribution of ¹³⁷Cs activity concentration in the litter layer of forest ecosystem in Fukushima using FoRothCs model

Authentication

Session information

[M-IS14] Biogeochemistry

[MIS14-P01] Contrasting of nitrogen leaching from Moso bamboo forest and Japanese cedar forest: Role of vegetation in retaining nitrogen

[MIS14-P02] Factors controlling the spatial distribution of dissolved organic matter with changes in the C/N ratio from headwaters to lower reaches of the Ishikari River

[MIS14-P03] Determination on the Triple Oxygen Isotopic Composition of Nitrous Oxide Emitted from Soils

[MIS14-P04] ORP Controlled Facultative Anaerobic Nitrate and Nitrite Reduction in a Groundwater Mesocosm

[MIS14-P05] Vertical distributions in the level and sulfur isotope ratio of sulfide in sediment of the Lake Biwa during stratification period

[MIS14-P06] A direct determination of N2O reduction potential in soil using 15N2O tracer

[MIS14-P07] Estimation of spatiotemporal distribution of 137Cs activity concentration in the litter layer of forest ecosystem in Fukushima using FoRothCs model

Authentication

[MIS14-P06] A direct determination of N₂O reduction potential in soil using ¹⁵N₂O tracer

[MIS14-P07] Estimation of spatiotemporal distribution of ¹³⁷Cs activity concentration in the litter layer of forest ecosystem in Fukushima using FoRothCs model