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Takuya Ohyama

Nagoya University

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Publication

Featured researches published by Takuya Ohyama.

Biogeosciences | 2012

Tracing atmospheric nitrate in groundwater using triple oxygen isotopes: evaluation based on bottled drinking water

Fumiko Nakagawa; Atsushi Suzuki; S. Daita; Takuya Ohyama; Daisuke D. Komatsu; Urumu Tsunogai

Biogeosciences | 2016

Accurate and precise quantification of atmospheric nitrate in streams draining land of various uses by using triple oxygen isotopes as tracers

Urumu Tsunogai; Takanori Miyauchi; Takuya Ohyama; Daisuke D. Komatsu; Fumiko Nakagawa; Yusuke Obata; Keiichi Sato; Tsuyoshi Ohizumi

Biogeosciences | 2014

Quantifying the effects of clear-cutting and strip-cutting on nitrate dynamics in a forested watershed using triple oxygen isotopes as tracers

Urumu Tsunogai; Daisuke D. Komatsu; Takuya Ohyama; Atsushi Suzuki; Fumiko Nakagawa; Izumi Noguchi; Kentaro Takagi; Mutsumi Nomura; Karibu Fukuzawa; Hideaki Shibata

Limnology and Oceanography | 2018

Quantifying nitrate dynamics in a mesotrophic lake using triple oxygen isotopes as tracers

Urumu Tsunogai; Takanori Miyauchi; Takuya Ohyama; Daisuke D. Komatsu; Masanori Ito; Fumiko Nakagawa

Atmospheric Chemistry and Physics | 2018

Triple oxygen isotopes indicate urbanization affects sources of nitrate in wet and dry atmospheric deposition

David M. Nelson; Urumu Tsunogai; Dong Ding; Takuya Ohyama; Daisuke D. Komatsu; Fumiko Nakagawa; Izumi Noguchi

Japan Geoscience Union | 2017

Triple oxygen isotopes indicate that urbanization causes differences in the sources of nitrate between dry and wet atmospheric deposition

David M. Nelson; Urumu Tsunogai; Takuya Ohyama; Daisuke D. Komatsu; Fumiko Nakagawa; Izumi Noguchi

Japan Geoscience Union | 2016

Accurate quantification of atmospheric nitrate in stream water eluted from a small forested watershed using triple oxygen isotopic composition

Yusuke Obata; Kenta Ando; Takuya Ohyama; Fumiko Nakagawa; Urumu Tsunogai; Naoyuki Yamashita; Tatsuyoshi Saito; Hiroyuki Sase

Japan Geoscience Union | 2015

Tracing the source of nitrate eluted from the forest ecosystem under high deposition rate of atmospheric nitrogen

Kenta Ando; Urumu Tsunogai; Takuya Ohyama; Fumiko Nakagawa; Shigeki Uchiyama; Naoyuki Yamashita; Hiroyuki Sase

Japan Geoscience Union | 2015

Quantifying nitrate dynamics in the changing lake Inawashiro

Yoshiumi Matsumoto; Urumu Tsunogai; Takuya Ohyama; Fumiko Nakagawa

Japan Geoscience Union | 2015

Determination on the triple oxygen isotopic composition of atmospheric nitrous acid (HONO)

Ray Nakane; Takuya Ohyama; Fumiko Nakagawa; Urumu Tsunogai; Izumi Noguchi

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Fumiko Nakagawa

Hokkaido University

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Urumu Tsunogai

Nagoya University

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Daisuke D. Komatsu

Hokkaido University

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Izumi Noguchi

ENVIRON

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Atsushi Suzuki

National Institute of Advanced Industrial Science and Technology

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Kenta Ando

Nagoya University

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Yusuke Obata

Mie University

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David M. Nelson

University of Maryland Center for Environmental Science

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Naoyuki Yamashita

Environmental Quality Management

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Dong Ding

Nagoya University

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