| 
		Short title
		 | 
		
			Biogeochemistry
		 | 
	
	
		
			Oral presentation Date/Room/Chair
		 | 
		
			May 23 PM2 (16:15 - 18:00)
		 | 
		
			302
		 | 
		
			Taichi Yokokawa 
			/ Chisato Yoshikawa 
		 | 
	
	
		| 
			May 24 AM1 (09:00 - 10:45)
		 | 
		
			302
		 | 
		
			Taichi Yokokawa 
			/ Chisato Yoshikawa 
			/ Takeo Hama 
			/ Takahito Yoshioka 
		 | 
	
	
		| 
			May 24 AM2 (11:00 - 12:45)
		 | 
		
			302
		 | 
		
			Yoshinori Takano 
			/ Seiya Nagao 
			/ Rota Wagai 
			/ Atsushi Hayakawa 
		 | 
	
	
		| 
			May 24 PM1 (14:15 - 16:00)
		 | 
		
			302
		 | 
		
			Rota Wagai 
			/ Atsushi Hayakawa 
			/ Keisuke Koba 
			/ Yoshiyuki Inagaki 
		 | 
	
	
		
			Poster presentation Date/Room
		 | 
		
			May 23 (Core Time 18:15 - 19:30)
		 | 
		
			Convention Hall
		 | 
	
	
		| 
			Contact
		 | 
		
			Hideaki Shibata
		 | 
	
	
		| 
			Email
		 | 
		
			shiba@fsc.hokudai.ac.jp
		 | 
	
	
		| 
			Convener
		 | 
		
			Hideaki Shibata 
			/ Muneoki Yoh 
			/ Naohiko Ohkouchi 
			/ Youhei Yamashita 
		 | 
	
	
		| 
			Scope
		 | 
		
			Biogeochemistry is an interdisciplinary study field including ecology, geochemistry, oceanography, limnology, hydrology, soil science and Environmental sciences.  However, researches 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.
		 | 
	
	
		| 
			Notes
		 | 
		
			 
		 | 
	
	
		| Time | 
		Presentation No | 
		Title | 
		Author | 
		Presenter | 
		Abstract | 
	
	
		| 
			Oral Presentation   May 23 PM2 (16:15-18:00) 302                              to the top
		 | 
	
	
		| 
			16:15 - 16:30
		 | 
		
			MIS24-01
		 | 
		
			Origin of nitrous oxide dissolved in the ocean deduced from concentration and isotope ratios
		 | 
		
			Sakae Toyoda
			 
			FUJII, Ayako
			 
			YOSHIDA, Naohiro
			 
			other
		 | 
		
			Sakae Toyoda
		 | 
		
			English
		 | 
	
	
		| 
			16:30 - 16:45
		 | 
		
			MIS24-02
		 | 
		
			Potential use of N_{2}* as a constraint of sedimentary denitrification in the deep ocean
		 | 
		
			Masahito Shigemitsu
			 
			GRUBER, Nicolas
			 
			OKA, Akira
			 
			other
		 | 
		
			Masahito Shigemitsu
		 | 
		
			English
		 | 
	
	
		| 
			16:45 - 17:00
		 | 
		
			MIS24-03
		 | 
		
			Island mass effect and nitrogen fixation
		 | 
		
			Takuhei Shiozaki
			 
			Ken Furuya
		 | 
		
			Takuhei Shiozaki
		 | 
		
			English
		 | 
	
	
		| 
			17:00 - 17:15
		 | 
		
			3-min talk in an oral session@(MIS24-P01/MIS24-P02/MIS24-P03/MIS24-P04/MIS24-P05)
		 | 
	
	
		| 
			17:15 - 17:30
		 | 
		
			3-min talk in an oral session@(MIS24-P07/MIS24-P08/MIS24-P09/MIS24-P11/MIS24-P12)
		 | 
	
	
		| 
			17:30 - 17:45
		 | 
		
			3-min talk in an oral session@(MIS24-P14/MIS24-P15/MIS24-P16/MIS24-P17/MIS24-P18)
		 | 
	
	
		| 
			17:45 - 18:00
		 | 
		
			3-min talk in an oral session@(MIS24-P19/MIS24-P21/MIS24-P22/MIS24-P23/MIS24-P24/MIS24-P26)
		 | 
	
	
		| 
			Oral Presentation   May 24 AM1 (09:00-10:45) 302                              to the top
		 | 
	
	
		| 
			09:00 - 09:15
		 | 
		
			MIS24-04
		 | 
		
			Trophic fractionation of carbon and nitrogen isotope ratios along food chains in marine, lake and grassland ecosystems
		 | 
		
			Maki Noguchi
			 
			Reiichiro Ishii
			 
			Eitaro Wada
		 | 
		
			Maki Noguchi
		 | 
		
			English
		 | 
	
	
		| 
			09:15 - 09:30
		 | 
		
			MIS24-05
		 | 
		
			Earth's biogeochemical processes revealed by radiotracer-based activity measurement
		 | 
		
			Katsunori Yanagawa
		 | 
		
			Katsunori Yanagawa
		 | 
		
			English
		 | 
	
	
		| 
			09:30 - 09:45
		 | 
		
			MIS24-06
		 | 
		
			Determination of elemental composition of diatom opal and its implication on the geochemical cycle in the Oceans
		 | 
		
			Mariko Emoto
			 
			AKAGI, Tasuku
			 
			TAKAHASHI, Kozo
		 | 
		
			Mariko Emoto
		 | 
		
			English
		 | 
	
	
		| 
			09:45 - 10:00
		 | 
		
			MIS24-07
		 | 
		
			Speciation of iron(II) in oxic inland water
		 | 
		
			Masahiro Maruo
			 
			Waka Oyama
			 
			Hajime Obata
		 | 
		
			Masahiro Maruo
		 | 
		
			English
		 | 
	
	
		| 
			10:00 - 10:15
		 | 
		
			MIS24-08
		 | 
		
			Decomposition process of labile DOC derived from phytoplankton
		 | 
		
			Yuji Hanamachi
			 
			Koya Nakamura
		 | 
		
			Yuji Hanamachi
		 | 
		
			English
		 | 
	
	
		| 
			10:15 - 10:30
		 | 
		
			MIS24-09
		 | 
		
			Decomposition process of macroalgal dissolved organic matter
		 | 
		
			Shigeki Wada
			 
			TASHIRO Yuya
			 
			TSUCHIYA Yasutaka
			 
			other
		 | 
		
			Shigeki Wada
		 | 
		
			English
		 | 
	
	
		| 
			10:30 - 10:45
		 | 
		
			MIS24-10
		 | 
		
			Relationship between fluorescence characteristics and molecular weight of FDOM produced by bacteria
		 | 
		
			Koichi Shimotori
			 
			Keiji Watanabe
			 
			Takeo Hama
		 | 
		
			Koichi Shimotori
		 | 
		
			English
		 | 
	
	
		| 
			Oral Presentation   May 24 AM2 (11:00-12:45) 302                              to the top
		 | 
	
	
		| 
			11:00 - 11:15
		 | 
		
			MIS24-11
		 | 
		
			Study on migration of particulate organic matter in the Kushiro River using radiocarbon and stable carbon isotopes
		 | 
		
			Seiya Nagao
			 
			SZUKI, Tomoyo
			 
			SEKI, Osamu
			 
			other
		 | 
		
			Seiya Nagao
		 | 
		
			English
		 | 
	
	
		| 
			11:15 - 11:30
		 | 
		
			MIS24-12
		 | 
		
			Humic substances may control dissolved iron distributions in the global ocean: Implications from numerical simulations
		 | 
		
			Kazuhiro Misumi
			 
			LINDSAY, Keith
			 
			MOORE, J. Keith
			 
			other
		 | 
		
			Kazuhiro Misumi
		 | 
		
			English
		 | 
	
	
		| 
			11:30 - 11:45
		 | 
		
			MIS24-13
		 | 
		
			The sources of amino acids in marine sediments estimated from nitrogen isotopic composition of amino acids and chlorin
		 | 
		
			Yasuhiko T. Yamaguchi
			 
			Hisami Suga
			 
			Yoshinori Takano
			 
			other
		 | 
		
			Yasuhiko T. Yamaguchi
		 | 
		
			English
		 | 
	
	
		| 
			11:45 - 12:00
		 | 
		
			MIS24-14
		 | 
		
			QUANTITATIVE ESTIMATION OF METHANOGENIC POTENTIAL USING FACTOR F430
		 | 
		
			Masanori Kaneko
			 
			TAKANO, Yoshinori
			 
			OGAWA, Nanako O.
			 
			other
		 | 
		
			Masanori Kaneko
		 | 
		
			English
		 | 
	
	
		| 
			12:00 - 12:15
		 | 
		
			MIS24-15
		 | 
		
			Physiological and genetic properties of key methanogenic Archaea for global methane emission from rice paddy fields.
		 | 
		
			Sanae Sakai
		 | 
		
			Sanae Sakai
		 | 
		
			English
		 | 
	
	
		| 
			12:15 - 12:30
		 | 
		
			MIS24-16
		 | 
		
			Variation in delta N-15 among the soil organo-mineral particles of various sizes in two volcanic-ash soils
		 | 
		
			Maki Asano
			 
			WAGAI, Rota
		 | 
		
			Maki Asano
		 | 
		
			English
		 | 
	
	
		| 
			12:30 - 12:45
		 | 
		
			MIS24-17
		 | 
		
			Organic matter accumulation in volcanic ash soil revealed by C-13 tracer experiments and density fractionation analysis
		 | 
		
			Chie HAYAKAWA
			 
			Rota, WAGAI
			 
			Yoshiyuki, INAGAKI
		 | 
		
			Chie HAYAKAWA
		 | 
		
			English
		 | 
	
	
		| 
			Oral Presentation   May 24 PM1 (14:15-16:00) 302                              to the top
		 | 
	
	
		| 
			14:15 - 14:30
		 | 
		
			MIS24-18
		 | 
		
			Mineralogical variations in tropical soils on African Shield
		 | 
		
			Atsushi Nakao
			 
			Sugihara Soh
			 
			Funakawa Shinya
		 | 
		
			Atsushi Nakao
		 | 
		
			English
		 | 
	
	
		| 
			14:30 - 14:45
		 | 
		
			MIS24-19
		 | 
		
			Modification of the DNDC-Rice model to evaluate the nitrogen balance at a paddy field
		 | 
		
			Nobuko Katayanagi
			 
			ONO, Keisuke
			 
			FUMOTO, Tamon
			 
			other
		 | 
		
			Nobuko Katayanagi
		 | 
		
			English
		 | 
	
	
		| 
			14:45 - 15:00
		 | 
		
			MIS24-20
		 | 
		
			Rapid decomposition of organic matter in N-rich forest and cropland soils as revealed by cellulose filter incubation
		 | 
		
			Kazumichi Fujii
			 
			Yoshiyuki Inagaki
			 
			Kenji Ono
			 
			other
		 | 
		
			Kazumichi Fujii
		 | 
		
			English
		 | 
	
	
		| 
			15:00 - 15:15
		 | 
		
			MIS24-21
		 | 
		
			Morphological changes in bamboo with nitrogen saturation
		 | 
		
			Yuki Aihara
			 
			Keisuke Koba
			 
			Muneoki Yoh
		 | 
		
			Yuki Aihara
		 | 
		
			English
		 | 
	
	
		| 
			15:15 - 15:30
		 | 
		
			MIS24-22
		 | 
		
			Effect of nitrogen fixation activity on green needle decomposition of Japanese cedar
		 | 
		
			Keizo Hirai
			 
			Takashi Yamanaka
			 
			Kenji Ono
			 
			other
		 | 
		
			Keizo Hirai
		 | 
		
			English
		 | 
	
	
		| 
			15:30 - 15:45
		 | 
		
			MIS24-23
		 | 
		
			Proton budgets for a Japanese cedar stand and a Japanese red pine stand receiving high nitrogen deposition
		 | 
		
			Takashi Wakamatsu
			 
			Kazou Sato
			 
			Akira Takahashi
			 
			other
		 | 
		
			Takashi Wakamatsu
		 | 
		
			English
		 | 
	
	
		| 
			15:45 - 16:00
		 | 
		
			MIS24-24
		 | 
		
			Factors influencing spatial distribution of soil nitrogen dynamics in a natural mixed forest stand in northern Japan
		 | 
		
			Takahiro Inoue
			 
			FUKUZAWA karibu
			 
			YOSHIDA toshiya
			 
			other
		 | 
		
			Takahiro Inoue
		 | 
		
			English
		 | 
	
	
		| Presentation No | 
		Title | 
		Author | 
		Presenter | 
		Abstract | 
	
	
		| 
			Poster Presentation   May 23  Core Time (18:15-19:30) Convention Hall                    to the top
		 | 
	
	
		| 
			MIS24-P01
		 | 
		
			Dissolved iron concentration in rivers throughout Japan and GIS analysis of its geographical factors
		 | 
		
			Atsushi Masaki
			 
			Takeo Onishi
			 
			Takayuki Shiraiwa
			 
			other
		 | 
		
			Muneoki Yoh
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P02
		 | 
		
			Humic Substances Affect Growth of the Marine Phytoplankton Cultures
		 | 
		
			Koji Fukuzaki
			 
			Takahito Yoshioka
			 
			Kanako Naito
			 
			other
		 | 
		
			Koji Fukuzaki
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P03
		 | 
		
			Input-output budgets and internal fluxes of dissolved materials in tropical rainforest catchment of Malaysian Borneo
		 | 
		
			Naoyuki Yamashita
			 
			Sase, Hiroyuki
			 
			KOBAYASHI, Ryo
			 
			other
		 | 
		
			Naoyuki Yamashita
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P04
		 | 
		
			Origin and composition of organic matter in a brackish lagoon by elemental and isotopic techniques
		 | 
		
			Kenta WATANABE
			 
			Shigeru MONTANI
			 
			Tomohiro KUWAE
		 | 
		
			Kenta WATANABE
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P05
		 | 
		
			Spectral characteristics of chromophoric dissolved organic matter in the western North Pacific
		 | 
		
			Youhei Yamashita
			 
			Yuichi Nosaka
			 
			Koji Suzuki
			 
			other
		 | 
		
			Youhei Yamashita
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P06
		 | 
		
			Contribution of heterotrophic bacteria for degradation process of organic carbon in the ocean
		 | 
		
			Yuya Tada
		 | 
		
			Yuya Tada
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P07
		 | 
		
			Linking temperature sensitivity of decomposition with substrate quality and microbial physiology
		 | 
		
			Rota Wagai
		 | 
		
			Rota Wagai
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P08
		 | 
		
			Detecting 15N records in paleo-laminaria specimen; Evidence of herrings derived DIN to the west coast of Hokkaido, Japan
		 | 
		
			Takanori Kuribayashi
			 
			ABE, Tsuyoshi
			 
			MONTANI, Shigeru
		 | 
		
			Takanori Kuribayashi
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P09
		 | 
		
			Spatio-temporal variation of phosphate concentration at river mouths in the Lake Hachiro watershed, Akita, Japan
		 | 
		
			Atsushi Hayakawa
			 
			Satomi Ikeda
			 
			Yuichi Ishikawa
			 
			other
		 | 
		
			Atsushi Hayakawa
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P10
		 | 
		
			Relationship between the coastal Blue Carbon and atmospheric CO_{2}
		 | 
		
			Tatsuki Tokoro
			 
			KUWAE, Tomohiro
		 | 
		
			Tatsuki Tokoro
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P11
		 | 
		
			Influence of surface flow on nitrogen discharge processes from a forested watershed
		 | 
		
			Tatsuro Kugo
			 
			Ken'ichi Osaka
			 
			II, Yumi
			 
			other
		 | 
		
			Tatsuro Kugo
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P12
		 | 
		
			Difference of water quality of rivers between the affected by polluted air from urban area and the environed by mountain
		 | 
		
			Yusuke Machida
			 
			Kenichi Satake
		 | 
		
			Yusuke Machida
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P13
		 | 
		
			Observation of vertical profiles of nitrogen oxides and ozone in two forest sites at the foot of Mt Fuji
		 | 
		
			Yuki Hida
			 
			Yusuke Moriyama
			 
			Ryuichi Wada
			 
			other
		 | 
		
			Yuki Hida
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P14
		 | 
		
			Seasonal pattern of nitrogen uptake by Sasa dwarf bamboo in a cool-temperate forest in northern Hokkaido
		 | 
		
			Karibu Fukuzawa
		 | 
		
			Karibu Fukuzawa
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P15
		 | 
		
			Changes in biochemical characteristics of extractable organic matter during litter decomposition
		 | 
		
			Satoru Hobara
			 
			HASEGAWA, Yuki
			 
			OSONO, Takashi
		 | 
		
			Satoru Hobara
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P16
		 | 
		
			The processes of transformation and emission of nitrite in the forest soil
		 | 
		
			Megumi Kuroiwa
			 
			ISOBE, Kazuo
			 
			KOBA, Keisuke
			 
			other
		 | 
		
			Megumi Kuroiwa
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P17
		 | 
		
			Nitrogen mineralization rates in forest soils in Japanese archipelago - Soil chemical properties -
		 | 
		
			Rieko Urakawa
			 
			OHTE, Nobuhito
			 
			SHIBATA, Hideaki
			 
			other
		 | 
		
			Rieko Urakawa
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P18
		 | 
		
			Deer-induced degradation of understory vegetation affects N retention and loss in forested watershed
		 | 
		
			Keitaro Fukushima
			 
			SAKAI, Masaru
			 
			SAKAGUCHI, Shota
			 
			other
		 | 
		
			Keitaro Fukushima
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P19
		 | 
		
			Nitrate discharge from an N-rich forest in central Japan: A preliminary isotopic diagnose of rainfall events
		 | 
		
			Xueyan Liu
			 
			Keisuke Koba
			 
			Akiko Makabe
			 
			other
		 | 
		
			Xueyan Liu
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P20
		 | 
		
			Emissions of nitrous oxide and methane in temperate forests with different nitrogen status in central Japan
		 | 
		
			Shaoyan Fan
			 
			Keisuke Koba
			 
			Muneoki Yoh
		 | 
		
			Shaoyan Fan
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P21
		 | 
		
			Measurement of concentrations and isotope ratios of nitrite in acidic forest soils
		 | 
		
			Shuichiro Matsushima
			 
			Keisuke Koba
			 
			Akiko Makabe
			 
			other
		 | 
		
			Shuichiro Matsushima
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P22
		 | 
		
			Extractable amino sugar-like N in forest soils
		 | 
		
			Ryo Kobayashi
			 
			Keisuke Koba
			 
			Akiko Makabe
			 
			other
		 | 
		
			Ryo Kobayashi
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P23
		 | 
		
			Optical characterization of  DOM in a temperate forest ecosystemsby fluorescence
		 | 
		
			Hiroyu Kato
			 
			Keisuke Koba
		 | 
		
			Hiroyu Kato
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P24
		 | 
		
			Carbon allocation in Japanese cedar forests with different nitrogen deposition in northern Kanto district
		 | 
		
			Yoshiyuki Inagaki
			 
			INAGAKI, Masahiro
			 
			HASHIMOTO, Toru
			 
			other
		 | 
		
			Yoshiyuki Inagaki
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P25
		 | 
		
			Silicon cycle in moso bamboo ({i}Phyllostachys pubescens{/i}) forests in central Japan
		 | 
		
			Mitsutoshi Umemura
			 
			Chisato Takenaka
		 | 
		
			Mitsutoshi Umemura
		 | 
		
			English
		 | 
	
	
		| 
			MIS24-P26
		 | 
		
			Carbonized wood for atmospheric mercury, passive sampler
		 | 
		
			Akihiro Okuma
			 
			Nobuko Ono
			 
			Kenichi Satake
		 | 
		
			Akihiro Okuma
		 | 
		
			English
		 |