Biogeosciences

Magnesium isotopic variation in marine fish organs

Toshihiro Yoshimura, Naoto F. Ishikawa, Nanako O. Ogawa, Soichiro Kusaka, Shigeyuki Wakaki, Tsuyoshi Ishikawa, Kazuya Nagaishi, Masanori Kaneko, Yuta Isaji, Yoshito Chikaraishi, Naohiko Ohkouchi

Distributions of heme B and its implications on Fe biogeochemistry in the eastern Indian Ocean and the western North Pacific Ocean

Yuta Isaji, Koji Sugie, Naoto F. Ishikawa, Nanako O. Ogawa, Kazuhiko Matsumoto, Chisato Yoshikawa, Hajime Obata, Makio C. Honda, Naohiko Ohkouchi

Highly effective energy transfer in the autotroph-heterotroph symbiosis: insights from compound-specific isotope analysis of amino acids

Jincen Li, Mio Shibuya, Yuko Takizawa, Yoshito Chikaraishi

A large elevation in 15N/14N of collagenous amino acids: an insight from starvation experiments of marine organisms

Hyuntae Choi, Yuko Takizawa, Nayeon Park, Yoshito Chikaraishi

Isotope analysis of birds’ eye lens provides early-life information

Emi A. Hasegawa, Jun Matsubayashi, Ichiro Tayasu, Tatsuhiko Goto, Haruka Inoue, Axel G. Rossberg, Chikage Yoshimizu, Masaru Hasegawa, Takumi Akasaka

Differential use of multiple food sources at a bathyal benthic ecosystem in the central Sagami Bay revealed by amino acid nitrogen isotopic compositions

Hidetaka Nomaki, Yoshito Chikaraishi, Nanako O. Ogawa, Koh Maki, Motohiro Shimanaga, Hisami Suga, Masashi Tsuchiya, Toshi Nagata, Naohiko Ohkouchi

Spatiotemporal variations in integrated trophic positions of stream macroinvertebrate communities

Naoto F. Ishikawa, Yoshitoshi Uehara, Takuya Ishida, Tohru Ikeya, Satoshi Asano, Chia-Ying Ko, Tomoya Iwata, Ichiro Tayasu, Naohiko Ohkouchi, Noboru Okuda

Orbital timescale CaCO3 burial and dissolution changes off the Chilean margin in the subantarctic Pacific over the past 140 kyr

Takuto Kasuya, Yusuke Okazaki, Shinya Iwasaki, Kana Nagashima, Katsunori Kimoto, Frank Lamy, Julia R. Hagemann, Lester Lembke-Jene, Helge W. Arz, Masafumi Murayama, Carina B. Lange, Naomi Harada

Dietary partitioning in sympatric Paradoxurinae civets in Borneo suggested by compound-specific nitrogen isotope analysis of amino acids

Miyabi Nakabayashi, Takumi Tsutaya, Abdul Hamid Ahmad, Yoko Sasaki, Nanako O. Ogawa, Naoto F. Ishikawa, Naohiko Ohkouchi

Natural 14C abundances and stable isotopes suggest discrete uptake routes for carbon and nitrogen in cold seep animals

Hidetaka Nomaki, Shigeaki Kojima, Yosuke Miyairi, Yusuke Yokoyama, Chong Chen