[M-IS25] Biogeochemistry

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

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[MIS25-P01] Model estimation of natural terrestrial methane emission and their stable carbon isotope ratio at broad scale

*Akihiko Ito¹ (1.National Institute for Environmental Studies)

[MIS25-P02] In-situ determination of denitrification, assimilation, and nitrification rates in urban streams

*Fumiko Nakagawa¹, Kensuke Suzuki¹, Masanori Ito¹, Urumu Tsunogai¹ (1.Graduate School of Environmental Studies, Nagoya University)

[MIS25-P03] Are sediment-derived long-chain n-alkanes a reliable paleoenvironmental indicator?

*Vijayananda Sarangi¹, Prasanta Sanyal¹ (1.Indian Institute of Science Education and Research Kolkata)

[MIS25-P04] Nitrate contamination of mountainous headwater streams from adjacent agricultural and pasture lands beyond the watershed boundary in eastern Hokkaido, Japan

*Keitaro Fukushima¹, Kenta Iwasaki², Yoshiya Oda³, Masaru Sakai⁴, Yuji Onishi¹, Keisuke Koba¹, Genki Katata⁵, Takashi Yamaguchi², Tomohiro Kubota⁵, Hirohiko Nagano⁶, Makoto Watanabe⁷, Jun Koarashi⁶ (1.Kyoto University, 2.Hokkaido Research Organization, 3.Tokyo Metropolitan University, 4.Chuo University, 5.Ibaraki University, 6.Japan Atomic Energy Agency, 7.Tokyo University of Agriculture and Technology)

[MIS25-P05] Stable carbon and nitrogen isotope analysis of bacterial nucleic acid

*Yuji Onishi¹, Keitaro Fukushima¹, Keisuke Koba¹ (1.Center for Ecological Research, Kyoto University)

[MIS25-P06] Individual specificity of feeding habit analyzed by stable isotope in a group of Japanese macaque.

*Kazuho Funakawa¹, Keisuke Koba¹ (1.Kyoto University )

[MIS25-P07] Geological, anthropogenic and tidal effects for stream water chemistry of the Yoshinogawa river systems in the Shikoku region

*Yoriko Yokoo¹, Saki Nagayama¹, Tomohiro Yoshida¹, Ryo Anma² (1.Faculty of Science and Engineering, Doshisha University, 2.Graduate School of Technology, Industrial and Social Sciences, Tokushima University)

[MIS25-P08] Biogeochemistry and benthic community structure of volcanic stream ecosystems in northern Japan

*Kazuki Marumo¹, Tomoya Iwata¹, Kokichi Aoya, Kazumi Tanida², Satoko Noda¹, Nozomi Kasai¹, Masahiro Yuki³ (1.University of Yamanashi, 2.Osaka Museum of Natural History, 3.RIKEN)

[MIS25-P09] Determine of host-parasitic relationship of freshwater parasites using stable isotope analysis

*Kei Kinoshita¹, Keitaro Fukushima¹, Yuji Onishi¹, Keisuke Koba¹ (1.Department of biology, Graduate School of Science, Kyoto University)

[MIS25-P10] Variation among carbon isotopes of plants growing in mixed evergreen-deciduous ecosystem.

*AKANKSHA RAI¹, Biswajit Roy¹, Padmasini Behera¹, Prasanta Sanyal¹ (1.INDIAN INSTITUTE OF SCIENCE EDUCATION AND RESEARCH KOLKATA)

[MIS25-P11] Effect of watershed-scale practical forest management on nitrogen leaching in a cool-temperate natural forest in northern Japan

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

[MIS25-P12] Interaction between marine bacterial community and dissolved organic matter released by pelagic phytoplankton

*Yuya Tada¹, Koji Suzuki², Youhei Yamashita² (1. National Institute For Minamata Disease, 2.Hokkaido Univ.)

[MIS25-P13] Relationship of N₂O emission and environmental factor between different vegetation in a cool temperature

*Miwako Nagane¹, Hideaki Shibata², Yoshitaka Uchida³, Ryunosuke Tateno⁴, Atsuko Sugimoto⁵ (1.Graduate school if Environmental Science, Hokkaido University, 2.Field Science Center for Northern Biosphere, Hokkaido University, 3.Faculty of Agriculture, Hokkaido University, 4.Field Science Education and Research Center, Kyoto University, 5.Arctic Research Center, Hokkaido University)

Session information

[M-IS25] Biogeochemistry