Vertical distribution of the triple oxygen isotopic compositions of DO in oligotrophic/mesotrophic environments

Urumu TSUNOGAI; Sho MINAMI; Hiroki SAKUMA; Daisuke KOMATSU; Fumiko NAKAGAWA

Presentation information

Oral

Symbol M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS21_28PM1] Biogeochemistry

Mon. Apr 28, 2014 2:15 PM - 4:00 PM 511 (5F)

Convener:*Muneoki Yoh(Tokyo University of Agriculture and Technology), 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), Chair:Ichiro Tayasu(Center for Ecological Research, Kyoto University), Tomoya Iwata(Faculty of Life and Environmental Sciences, University of Yamanashi), Rota Wagai(National Institute for Agro-Environmental Sciences, Carbon & Nutrient Cycling Division), Kazuya Nishina(National Institute for Enviromental Studies)

2:45 PM - 3:00 PM

[MIS21-14] Vertical distribution of the triple oxygen isotopic compositions of DO in oligotrophic/mesotrophic environments

*Urumu TSUNOGAI¹, Sho MINAMI¹, Hiroki SAKUMA¹, Daisuke KOMATSU¹, Fumiko NAKAGAWA² (1.Graduate School of Environmental Studies, Nagoya University, 2.Faculty of Science, Hokkaido University)

Keywords:oligotrophic lake, mesotrophic lake, dissolved oxygen, triple oxygen isotopes, vertical profile, seasonal variation

In order to quantify the gross production rate of dissolved oxygen molecules (DO) in hydrosphere beneath thermocline, vertical distributions of the triple oxygen isotopic compositions of DO in oligotrophic/mesotrophic lakes were determined, together with their temporal variations.