Biogeosciences

Diel and daily changes of water mass structure and biogeochemical processes in early spring in the western subtropical North Pacific

Chiho Sukigara, Taichi Yokokawa, Akiko Makabe, Kaho Mori, Yu Nakajima, Shinya Kouketsu, Eiji Tasumi, Masumi Hasegawa-Takano, Naoto F Ishikawa, Chunqi Jiang, Siyu Jiang, Riku Miyase, Satoshi Nishino, Youta Sugai, Kento Tominaga, Hiroshi Uchida, Yu Yoshida, Susumu Yoshizawa, Shinsuke kawagucci

Biogeochemical properties of shallow-water CO₂ seeps on Himeshima Island and Showa Iwojima Island, Japan

Masahiko Fujii, Tsuneo Ono, Makoto Yamada, Manabu Ooue, Takeru Ito, Jen-Han Yang, Yu Horiuchi, Hisashi Oiwane, Masahide Wakita, Shigeki Wada

Application of Microsublimation for Sample Purification in Compound-Specific Radiocarbon Analysis

Christian Heusser, Caroline Welte, Lukas Wacker, Kai Sebastian Nakajima, Thomas Blattmann, Negar Haghipour, Timothy Ian Eglinton

Nanomolar-scale Sulfate Sulfur Isotope Analysis Using a Combined Ion Chromatography-Barite Precipitation and nano-EA/IRMS

Nanako O OGAWA, Toshihiro Yoshimura, Takeru Kochi, Junichiro Kuroda, Yoshinori Takano, Naohiko Ohkouchi

Fatty Acids as the Main Energy Source in Polyps of the Jellyfish (Cnidaria: Aurelia aurita) for Survival Strategy under Overpopulation: Insights from Compound-Specific Isotope Analysis

Nayeon Park, Hyuntae Choi, Yuko Takizawa,Yoshito Chikaraishi

Nitrogen isotopic composition of amino acids reveals a variety of trophic ecology of organisms inhabiting chemosynthesis-based ecosystems

Masashi Tsuchiya, Takao Yoshida, Yoshito Chikaraishi, Nanako O Ogawa, Hidetaka Nomaki, Yoshihiro Fujiwara, Yasuhiko T Yamaguchi, Yohei Tada, Robert G Jenkins, Yoko Sasaki, Katsunori Fujikura, Naohiko Ohkouchi

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