[M-IS22] Biogeochemistry

Tue. May 27, 2025 3:30 PM - 5:00 PM 102 (International Conference Hall, Makuhari Messe)

convener:Keitaro Fukushima(Fukushima University), Keisuke Koba(Center for Ecological Research, Kyoto University), Youhei Yamashita(Faculty of Environmental Earth Science, Hokkaido University), Naohiko Ohkouchi(Japan Agency for Marine-Earth Science and Technology), Chairperson:Keitaro Fukushima(Fukushima University), 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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3:30 PM - 3:45 PM

[MIS22-07] Change in nitrate concentration in stream water during 13 years after clear-cutting and subsequent understory strip-cutting

*Karibu Fukuzawa¹, Mutsumi Nomura¹, Kentaro Takagi¹ (1.Field Science Center for Northern Biosphere, Hokkaido University)

3:45 PM - 4:00 PM

[MIS22-08] Trends of seasonal stream water chemistry in a forested ecosystem in the Shimanto River Basin

*Yoshiyuki Inagaki¹, Hisao Sakai¹, Yoshiki Shinomiya¹, Tsuyoshi Yamada¹, Kyotaro Noguhi¹, Tomoaki Morishita¹, Kazumichi Fujii¹ (1.Forestry and Forest Products Research Institute)

4:00 PM - 4:15 PM

[MIS22-09] Analysis of factors contributing to the variation in nutrient concentration and composition among the rivers in the Tokyo metropolitan area

Issei Murabe¹, *Yu Umezawa¹, Ryoutarou Ueba¹, Yuto Tashiro², Satoshi Nakada³, Chikage Yoshimizu⁴, Ichiro Tayasu⁴ (1.Tokyo University of Agriculture and Technology, 2.Akita Prefectural University, 3.National Institute for Environmental Studies, 4.Research Institute for Humanity and Nature)

4:15 PM - 4:30 PM

[MIS22-10] CO₂ fixation by soil algae in agricultural lands

Tomoki Tanaka¹, Kozue Sawada¹, *Jun Murase¹ (1.Nagoya University)

4:30 PM - 4:45 PM

[MIS22-11] Effects of repeated dry-wet cycles on soil carbon and nitrogen dynamics in humid temperate forests

*Masataka Nakayama^1,3, Yuri Suzuki^2,3, Yukiko Abe³, Takeshi Taniguchi¹, Mariko Atarashi-Andoh³, Jun Koarashi³, Hirohiko Nagano² (1.Tottori University, 2.Niigata University, 3.Japan Atomic Energy Agency)

4:45 PM - 5:00 PM

[MIS22-12] Malate and manganese ion increase production of dissolved organic matter in acidic forest soils

*Kazumichi Fujii¹, Chie Hayakawa² (1.F-REI, 2.Utsunomiya Univ.)

Session information

[M-IS22] Biogeochemistry

[MIS22-07] Change in nitrate concentration in stream water during 13 years after clear-cutting and subsequent understory strip-cutting

[MIS22-08] Trends of seasonal stream water chemistry in a forested ecosystem in the Shimanto River Basin

[MIS22-09] Analysis of factors contributing to the variation in nutrient concentration and composition among the rivers in the Tokyo metropolitan area

[MIS22-10] CO₂ fixation by soil algae in agricultural lands

[MIS22-11] Effects of repeated dry-wet cycles on soil carbon and nitrogen dynamics in humid temperate forests

[MIS22-12] Malate and manganese ion increase production of dissolved organic matter in acidic forest soils

Authentication

Session information

[M-IS22] Biogeochemistry

[MIS22-07] Change in nitrate concentration in stream water during 13 years after clear-cutting and subsequent understory strip-cutting

[MIS22-08] Trends of seasonal stream water chemistry in a forested ecosystem in the Shimanto River Basin

[MIS22-09] Analysis of factors contributing to the variation in nutrient concentration and composition among the rivers in the Tokyo metropolitan area

[MIS22-10] CO2 fixation by soil algae in agricultural lands

[MIS22-11] Effects of repeated dry-wet cycles on soil carbon and nitrogen dynamics in humid temperate forests

[MIS22-12] Malate and manganese ion increase production of dissolved organic matter in acidic forest soils

Authentication

[MIS22-10] CO₂ fixation by soil algae in agricultural lands