Biogeosciences

Elucidating the isotopic dynamics of nitrate and ammonium in the Fuji River using a Lagrangian approach: stable nitrate and fractionating ammonium

Công Thuận Nguyễn, Tomoya Iwata, Yuta Ikeda, Midori Yano, Akiko Makabe, Keisuke Koba

Methane- and hydrogen-dependent prokaryotic deep biosphere at the Suwa Basin, Japan: impacts of hydrogeological processes on subsurface prokaryotic ecology at the boundary between the North American and the Eurasian Plates

Hiroki Nishimura, Atsushi Urai, Yohei Matsui, Toshihiro Yoshimura, Miyuki Ogawara, Hiroyuki Imachi, Yosuke Miyairi, Yusuke Yokoyama, Yuichi Miyabara, Yoshio Takahashi, Yoshinori Takano

Fractionation of nitrogen isotopes in the enzymatic deamination of alanine: an insight into the quantitative evaluation of anaerobic metabolism in ecosystems

Yuko Takizawa, Hyuntae Choi, Mio Shibuya, Nayeon Park, Prarthana S. Dharampal, Shawn A. Steffan, Yoshito Chikaraishi

A compound-specific method for measuring the stable carbon isotopic composition of amino acids: elimination of the effect of isotopic fractionation during derivatization

Yoshito Chikaraishi, Hyuntae Choi, Nayeon Park,Yuko Takizawa

Reconstructing the body temperature of extinct marine reptiles

Takashi Sambuichi, Urumu Tsunogai, Fumiko Nakagawa

Chromatographic isolation for performing enantiomer-specific radiocarbon analysis (ESRA): first method development for individual L- and D-amino acids

Thomas M. Blattmann, Yuchen Sun, Nanako O. Ogawa, Yoshinori Takano, Negar Haghipour, Naoto F. Ishikawa, Timothy I. Eglinton, Naohiko Ohkouchi

New evaluation of vertical particulate organic carbon fluxes of submillimeter‑sized phaeodarians in the mesopelagic twilight zone of the western North Pacific Ocean

Takahito Ikenoue, Nanako O. Ogawa, Hidetaka Nomaki, Katsunori Kimoto, Makio C. Honda, Naohiko Ohkouchi, Tetsuichi Fujiki

Gleaning of δ15N in ecosystems and its animal-organ isotope data: perspectives for the construction of the isotopically ordered world

Eitaro Wada, Yoshihisa Kudo, Hiroshi Mizutani, Hiroshi Minami, Kenji Matsubara, Yoshihiro Yamada, Nanako O. Ogawa, Yukihiro Kohmatsu, Naoko Nishizawa, Isamu Shimizu, Reiichiro Ishii, Fujio Hyodo, Maki N. Aita, Wataru Sakamoto, Naohiko Ohkouchi

Rapid Holocene deposition in the Mackenzie Trough and Barrow Canyon areas in the western Arctic Ocean

Masanobu Yamamoto, Kenta Suzuki, Masafumi Murayama, Laura Gemery, Koji Seike, Leonid Polyak, Young Jin Joe, Shoma Uchida, Minoru Kobayashi, Jonaotaro Onodera, Keiji Horikawa, Yuhji Yamamoto, Takayuki Omori, Michinobu Kuwae, Tomohisa Irino, Yutaka Y. Watanabe, Motoyo Itoh, Eiji Watanabe

Nitrogen and carbon isotopic relationships in the diet and eye lenses of chub mackerel revealed in a laboratory rearing experiment

Chisato Yoshikawa, Nanako O. Ogawa, Naoto F. Ishikawa, Michio Yoneda, Ryuji Yukami, Shin-ichi Ito, Naohiko Ohkouchi