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Research activity information
Papers
- C. Yoshikawa; H. Yamaguchi; N.O. Ogawa; A. Makabe; M. Sato; Y. Mino; K. Matsumoto; Y. Nakano; S. Kawagucci; T. Fujiki; N. Harada; M. Kawachi; N. Ohkouchi
Nitrogenous sources for summertime phytoplankton at two contrasting stations in the subarctic and subtropical western North Pacific
Progress in Oceanography, Jan. 2026
240, 103614, 103614
[Reviewed] - Chisato Yoshikawa; Nanako O. Ogawa; Naoto F. Ishikawa; Michio Yoneda; Ryuji Yukami; Shin-ichi Ito; Naohiko Ohkouchi
Nitrogen and carbon isotopic relationships in the diet and eye lenses of chub mackerel revealed in a laboratory rearing experiment
Progress in Earth and Planetary Science, 23 Jul. 2025
12, 1
[Reviewed] - Aymeric P. M. Servettaz; Yuta Isaji; Chisato Yoshikawa; Yanghee Jang; Boo-Keun Khim; Yeongjun Ryu; Daniel M. Sigman; Nanako O. Ogawa; Francisco J. Jiménez-Espejo; Naohiko Ohkouchi
Sea ice and mixed layer depth influence on nitrate depletion and associated isotopic effects in the Drake Passage–Weddell Sea region, Southern Ocean
Biogeosciences, 13 May 2025
22, 9, 2239, 2260
[Reviewed] - Yuta Isaji; Koji Sugie; Naoto F. Ishikawa; Nanako O. Ogawa; Kazuhiko Matsumoto; Chisato Yoshikawa; Hajime Obata; Makio C. Honda; Naohiko Ohkouchi
Distributions of heme B and its implications on Fe biogeochemistry in the eastern Indian Ocean and the western North Pacific Ocean
Progress in Earth and Planetary Science, 11 Feb. 2025
12, 1
[Reviewed] - Tomihiko Higuchi; Ming-Tsung Chung; Chisato Yoshikawa; Yuki Minegishi
Editorial: Sharing technical knowledge to understand the distribution patterns and migration history of marine organisms
Frontiers in Marine Science, 27 Mar. 2024
11
[Reviewed] - Chisato Yoshikawa; Masahito Shigemitsu; Akitomo Yamamoto; Akira Oka; Naohiko Ohkouchi
A nitrogen isoscape of phytoplankton in the western North Pacific created with a marine nitrogen isotope model
Frontiers in Marine Science, 22 Jan. 2024
11
[Reviewed] - Sakae Toyoda; Kotaro Terajima; Naohiro Yoshida; Chisato Yoshikawa; Akiko Makabe; Fuminori Hashihama; Hiroshi Ogawa
Extensive Accumulation of Nitrous Oxide in the Oxygen Minimum Zone in the Bay of Bengal
Global Biogeochemical Cycles, Sep. 2023
[Reviewed] - Chisato Yoshikawa; Nanako O. Ogawa; Yoshito Chikaraishi; Akiko Makabe; Yohei Matsui; Yoshikazu Sasai; Masahide Wakita; Makio C. Honda; Yoshihisa Mino; Maki N. Aita; Tetsuichi Fujiki; Takuro Nunoura; Naomi Harada; Naohiko Ohkouchi
Nitrogen Isotopes of Sinking Particles Reveal the Seasonal Transition of the Nitrogen Source for Phytoplankton
Geophysical Research Letters, 16 Sep. 2022
49, 17
[Reviewed] - Yuta Isaji; C. Yoshikawa; N. O. Ogawa; K. Matsumoto; A. Makabe; S. Toyoda; N. F. Ishikawa; H. Ogawa; H. Saito; M. C. Honda; N. Ohkouchi
Nitrogen Sources for Phytoplankton in the Eastern Indian Ocean Determined From δ 15 N of Chlorophyll a and Divinylchlorophyll a
Geochemistry, Geophysics, Geosystems, Apr. 2022
23, 4
[Reviewed] - Yota Harada; Shin-ichi Ito; Nanako O. Ogawa; Chisato Yoshikawa; Naoto F. Ishikawa; Michio Yoneda; Naohiko Ohkouchi
Compound-Specific Nitrogen Isotope Analysis of Amino Acids in Eye Lenses as a New Tool to Reconstruct the Geographic and Trophic Histories of Fish
Frontiers in Marine Science, 03 Feb. 2022
8
[Reviewed] - Y. Mino; C. Sukigara; M. C. Honda; H. Kawakami; M. Wakita; K. Sasaoka; C. Yoshikawa; O. Abe; J. Kaiser; K. Kimoto; M. Kitamura; T. Fujiki; K. Matsumoto; T. Saino
Seasonal and Interannual Variations in Nitrogen Availability and Particle Export in the Northwestern North Pacific Subtropical Gyre
Journal of Geophysical Research: Oceans, May 2020
125, 5
[Reviewed] - Jun Matsubayashi; Yutaka Osada; Kazuaki Tadokoro; Yoshiyuki Abe; Atsushi Yamaguchi; Kotaro Shirai; Kentaro Honda; Chisato Yoshikawa; Nanako O Ogawa; Naohiko Ohkouchi; Naoto F Ishikawa; Toshi Nagata; Hiroomi Miyamoto; Shigeto Nishino; Ichiro Tayasu
Tracking long-distance migration of marine fishes using compound-specific stable isotope analysis of amino acids.
Ecology letters, 24 Mar. 2020
23, 5, 881, 890
[Reviewed] - Breider Florian; Yoshikawa Chisato; Makabe Akiko; Toyoda Sakae; Wakita Masahide; Matsui Yohei; Kawagucci Shinsuke; Fujiki Tetsuichi; Harada Naomi; Yoshida Naohiro
Response of N2O production rate to ocean acidification in the western North Pacific
NATURE CLIMATE CHANGE, Nov. 2019
9, 12, 954, 958
[Reviewed] - Takuhei Shiozaki; Minoru Ijichi; Amane Fujiwara; Akiko Makabe; Shigeto Nishino; Chisato Yoshikawa; Naomi Harada
Factors Regulating Nitrification in the Arctic Ocean: Potential Impact of Sea Ice Reduction and Ocean Acidification
GLOBAL BIOGEOCHEMICAL CYCLES, Aug. 2019
33, 8, 1085, 1099
[Reviewed] - Sebastian Oscar Danielache; Chisato Yoshikawa; Mizuo Kajino; Satoshi Itou; Wataru Kakeya; Naohiro Yoshida; Yasuhito Igarashi
Radioactive 35S emitted from the Fukushima Nuclear Power Plant and its re-suspension from the contaminated area
Geochemical Journal, 2019
53, 2, 103, 118
[Reviewed] - Kawagucci Shinsuke; Makabe Akiko; Kodama Taketoshi; Matsui Yohei; Yoshikawa Chisato; Ono Etsuro; Wakita Masahide; Nunoura Takuro; Uchida Hiroshi; Yokokawa Taichi
Hadal water biogeochemistry over the Izu-Ogasawara Trench observed with a full-depth CTD-CMS
OCEAN SCIENCE, 13 Jul. 2018
14, 4, 575, 588
[Reviewed] - Yoshikawa Chisato; Makabe Akiko; Matsui Yohei; Nunoura Takuro; Ohkouchi Naohiko
Nitrate Isotope Distribution in the Subarctic and Subtropical North Pacific
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS, Jul. 2018
19, 7, 2212, 2224
[Reviewed] - Sayaka Yasunaka; Yukihiro Nojiri; Taketo Hashioka; Chisato Yoshikawa; Taketoshi Kodama; Shin-ichiro Nakaoka; Sanae Chiba; Fuminori Hashihama; Masahide Wakita; Ken Furuya; Daisuke Sasano; Akihiko Murata; Hiroshi Uchida; Michio Aoyama
Basin-scale distribution of NH4 + and NO2 − in the Pacific Ocean
Journal of Oceanography, 01 Feb. 2018
74, 1, 1, 11
[Reviewed] - Makio C. Honda; Masahide Wakita; Kazuhiko Matsumoto; Tetsuichi Fujiki; Eko Siswanto; Kosei Sasaoka; Hajime Kawakami; Yoshihisa Mino; Chiho Sukigara; Minoru Kitamura; Yoshikazu Sasai; Sherwood L. Smith; Taketo Hashioka; Chisato Yoshikawa; Katsunori Kimoto; Shuichi Watanabe; Toru Kobari; Toshi Nagata; Koji Hamasaki; Ryo Kaneko; Mario Uchimiya; Hideki Fukuda; Osamu Abe; Toshiro Saino
Comparison of carbon cycle between the western Pacific subarctic and subtropical time-series stations: highlights of the K2S1 project
JOURNAL OF OCEANOGRAPHY, Oct. 2017
73, 5, 647, 667
[Reviewed] - Honda MC; M Wakita; K Matsumoto; T Fujiki; E Siswanto; K Sasaoka; H Kawakami; Y Mino; C Sukigara; M Kitamura; Y Sasai; SL Smith; T Hashioka; C Yoshikawa; K Kimoto; S Watanabe; T Kobari; T Nagata; K Hamasaki; R Kaneko; M Uchimiya; H Fukuda; O Abe; T Saino
Comparison of carbon cycle between the western Pacific subarctic and subtropical time-series stations: highlights of the K2S1 project
Journal of Oceanography, 26 Apr. 2017
[Reviewed] - Mizuo Kajino; Masahide Ishizuka; Yasuhito Igarashi; Kazuyuki Kita; Chisato Yoshikawa; Masaru Inatsu
Long-term assessment of airborne radiocesium after the Fukushima nuclear accident: re-suspension from bare soil and forest ecosystems
ATMOSPHERIC CHEMISTRY AND PHYSICS, Oct. 2016
16, 20, 13149, 13172
[Reviewed] - S. Lan Smith; Markus Pahlow; Agostino Merico; Esteban Acevedo-Trejos; Yoshikazu Sasai; Chisato Yoshikawa; Kosei Sasaoka; Tetsuichi Fujiki; Kazuhiko Matsumoto; Makio C. Honda
Contribution to the Themed Section: Advances in Plankton Modelling and Biodiversity Evaluation Flexible phytoplankton functional type (FlexPFT) model: size-scaling of traits and optimal growth
JOURNAL OF PLANKTON RESEARCH, Jul. 2016
38, 4, 977, 992
[Reviewed] - Yoshikazu Sasai; Chisato Yoshikawa; S. Lan Smith; Taketo Hashioka; Kazuhiko Matsumoto; Masahide Wakita; Kosei Sasaoka; Makio C. Honda
Coupled 1-D physical-biological model study of phytoplankton production at two contrasting time-series stations in the western North Pacific
JOURNAL OF OCEANOGRAPHY, Jun. 2016
72, 3, 509, 526
[Reviewed] - Chisato Yoshikawa; Hitomi Abe; Maki N. Aita; Florian Breider; Keichi Kuzunuki; Sakae Toyoda; Nanako O. Ogawa; Hisami Suga; Naohiko Ohkouchi; Sebastian O. Danielache; Masahide Wakita; Makio C. Honda; Naohiro Yoshida
Insight into nitrous oxide production processes in the western North Pacific based on a marine ecosystem isotopomer model
JOURNAL OF OCEANOGRAPHY, Jun. 2016
72, 3, 491, 508
[Reviewed] - Florian Breider; Chisato Yoshikawa; Hitomi Abe; Sakae Toyoda; Naohiro Yoshida
Origin and fluxes of nitrous oxide along a latitudinal transect in western North Pacific: Controls and regional significance
GLOBAL BIOGEOCHEMICAL CYCLES, Jul. 2015
29, 7, 1014, 1027
[Reviewed] - Chisato Yoshikawa; Akiko Makabe; Takuhei Shiozaki; Sakae Toyoda; Osamu Yoshida; Ken Furuya; Naohiro Yoshida
Nitrogen isotope ratios of nitrate and N* anomalies in the subtropical South Pacific
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS, May 2015
16, 5, 1439, 1448
[Reviewed] - Chisato Yoshikawa; Elena Hayashi; Keita Yamada; Osamu Yoshida; Sakae Toyoda; Naohiro Yoshida
Methane sources and sinks in the subtropical South Pacific along 17 degrees S as traced by stable isotope ratios
CHEMICAL GEOLOGY, Aug. 2014
382, 24, 31
[Reviewed] - Chisato Yoshikawa; Victoria J. Coles; Raleigh R. Hood; Douglas G. Capone; Naohiro Yoshida
Modeling how surface nitrogen fixation influences subsurface nutrient patterns in the North Atlantic
Journal of Geophysical Research: Oceans, 2013
118, 5, 2520, 2534
[Reviewed] - Abe Hitomi
A STUDY OF THE MARINE NITROUS OXIDE USING AN ECOSYSTEM MODEL INCLUDING NITROGEN ISOTPES
Abstracts of Annual Meeting of the Geochemical Society of Japan, 2012
59, 112 - Sebastian O. Danielache; Chisato Yoshikawa; Antra Priyadarshi; Toshihiko Takemura; Yuichiro Ueno; Mark H. Thiemens; Naohiro Yoshidai
An estimation of the radioactive S-35 emitted into the atmospheric from the Fukushima Daiichi Nuclear Power Plant by using a numerical simulation global transport
GEOCHEMICAL JOURNAL, 2012
46, 4, 335, 339
[Reviewed] - ダニエラチェセバスチアン; 服部 祥平; 吉川 知里; 上野 雄一郎; ジョンソン マット; 吉田 尚弘
成層圏硫黄エアロゾル： アイソトポマーを用いた硫黄循環解析
日本地球化学会年会要旨集, Sep. 2010
57, 2P37, 01-P05
[Reviewed] - 吉川 知里; ダニエラチェセバスチアン; 上野 雄一郎; 須藤 健悟; 石島 健太郎; 滝川 雅之; 吉田 尚弘
成層圏硫黄循環の解析を目的としたアイソトポマーモデルの開発
日本地球化学会年会要旨集, Sep. 2010
57, 2P32, 10-P07
[Reviewed] - Chisato Yoshikawa; Michio Kawamiya; Tomomichi Kato; Yasuhiro Yamanaka; Taroh Matsuno
Geographical distribution of the feedback between future climate change and the carbon cycle
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES, Jul. 2008
113, G3
[Reviewed] - Chisato Yoshikawa; Takeshi Nakatsuka; Masaaki Wakatsuchi
Distribution of N* in the Sea of Okhotsk and its use as a biogeochemical tracer of the Okhotsk Sea Intermediate Water formation process
JOURNAL OF MARINE SYSTEMS, Nov. 2006
63, 1-2, 49, 62
[Reviewed] - Chisato Yoshikawa; Yasuhiro Yamanaka; Takeshi Nakatsuka
Nitrate-nitrogen isotopic patterns in surface waters of the western and central equatorial Pacific
JOURNAL OF OCEANOGRAPHY, Aug. 2006
62, 4, 511, 525
[Reviewed] - P. Friedlingstein; P. Cox; R. Betts; L. Bopp; W. Von Bloh; V. Brovkin; P. Cadule; S. Doney; M. Eby; I. Fung; G. Bala; J. John; C. Jones; F. Joos; T. Kato; M. Kawamiya; W. Knorr; K. Lindsay; H. D. Matthews; T. Raddatz; P. Rayner; C. Reick; E. Roeckner; K. -G. Schnitzler; R. Schnur; K. Strassmann; A. J. Weaver; C. Yoshikawa; N. Zeng
Climate-carbon cycle feedback analysis: Results from the (CMIP)-M-4 model intercomparison
JOURNAL OF CLIMATE, Jul. 2006
19, 14, 3337, 3353
[Reviewed] - O Seki; C Yoshikawa; T Nakatsuka; K Kawamura; M Wakatsuchi
Fluxes, source and transport of organic matter in the western Sea of Okhotsk: Stable carbon isotopic ratios of n-alkanes and total organic carbon
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS, Feb. 2006
53, 2, 253, 270
[Reviewed] - C Yoshikawa; Y Yamanaka; T Nakatsuka
An ecosystem model including nitrogen isotopes: Perspectives on a study of the marine nitrogen cycle
JOURNAL OF OCEANOGRAPHY, Oct. 2005
61, 5, 921, 942
[Reviewed] - C Yoshikawa; T Nakatsuka; H Kawahata
Transition of low-salinity water in the Western Pacific Warm Pool recorded in the nitrogen isotopic ratios of settling particles
GEOPHYSICAL RESEARCH LETTERS, Jul. 2005
32, 14
[Reviewed] - Kawamiya, M; Yoshikawa, C; Kato, T; Sato, H; Sudo, K; Watanabe S; Matsuno, T
Development of an Integrated Earth System Model on the Earth Simulator.
Journal of Earth Simulator, 2005
4, 18, 30
[Reviewed] - T Nakatsuka; T Fujimune; C Yoshikawa; S Noriki; K Kawamura; Y Fukamachi; G Mizuta; M Wakatsuchi
Biogenic and lithogenic particle fluxes in the western region of the Sea of Okhotsk: Implications for lateral material transport and biological productivity
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, Aug. 2004
109, C9
[Reviewed] - T Nakatsuka; C Yoshikawa; M Toda; K Kawamura; M Wakatsuchi
An extremely turbid intermediate water in the Sea of Okhotsk: Implication for the transport of particulate organic matter in a seasonally ice-bound sea
GEOPHYSICAL RESEARCH LETTERS, Aug. 2002
29, 16
[Reviewed]
Misc.
- 吉川知里; 阿部瞳; 相田真希; 小川奈々子; 菅寿美; 大河内直彦; 脇田昌英; 本多牧生; 豊田栄; 吉田尚弘
海洋生態系モデリング 海洋N2O排出量の推定を目的とした海洋低次生態系-同位体分子種モデルの開発
月刊海洋, 2016
48, 7 - 安中さやか; 橋岡豪人; 吉川知里; 脇田昌英; 村田昌彦; 千葉早苗; 内田裕; 野尻幸宏; 野尻幸宏; 中岡慎一郎; 笹野大輔; 青山道夫; 青山道夫; 児玉武稔; 橋濱史典; 古谷研
太平洋表層におけるアンモニア・亜硝酸・硝酸の季節変化
日本海洋学会大会講演要旨集, 2016
2016
