PERSONNEL'S PROFILE
photo ͓@F
NAME Naohiko Ohkouchi
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SPECIALITY
Geobiology
Personal Web Page http://www.jamstec.go.jp/seika/pub-j/res/ress/nohkouchi/

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PUBLICATION LIST
2011
Junichiro Kuroda, Masaharu Tanimizu, Rie S. Hori, Katsuhiko Suzuki, Nanako O. Ogawa, Maria L. G. Tejada, Millard F. Coffin, Rodolfo Coccioni, Elisabetta Erba and Naohiko Ohkouchi, Lead isotopic record of Barremian-Aptian marine sediments: implications for large igneous provinces and the Aptian climatic crisis, Earth Planet. Sci. Lett., 307, 126-134, 2011.

2010
Junichiro Kuroda, Rie S. Hori, Katsuhiko Suzuki, Darren R. Grocke, Naohiko Ohkouchi, Marine osmium isotope record across the Triassic-Jurassic boundary from a Pacific pelagic site, Geology, 38, 12, 1095-1098, doi:10.1130/G31223.1- 2010.

Junichiro Kuroda, Katsuhiko Suzuki, Naohiko Ohkouchi, Linkage between massive volcanic events and global extreme climatic events in the Cretaceous period, Journal of Geography, 119, 3, 534-555, 2010.

Kashiyama Y., Ogawa N. O., Chikaraishi Y., Kashiyama N., Tanabe K., Ohkouchi N., Reconstructing the life history of modern and fossil nautiloids based on nitrogen isotopic composition of the shell organic matters and amino acids., Proceedings of the 7th International Symposium of Cephalopod -Present and Past, ,, 67-75, 2010.

2009
Yoshio Fukao, Shuichi Kodaira, Masataka Kinoshita, Yoshiyuki Tatsumi, Naohiko Ohkochi, Katsuhiko Suzuki, Daisuke Suetsugu, Takeshi Hanyu, Hiroko Sugioka, Shigeaki Ono, Kei Hirose, Takatoshi Yanagisawa, Yozo Hamano, Toshiya Fujiwara, Hiroshi Kitazato, Narumi Takahashi, Hide Sakaguchi, Review of five years of activity at IFREE/JAMSTEC, JAMSTEC Report R&D, 9, 43-94, 2009.

Takano Y., Chikaraishi Y., Ogawa N. O., Kitazato H., Ohkouchi N., Diastereomerization and cation-exchange for the precise determination of nitrogen isotopic composition of alanine enantiomers., Analytical Chemistry, - 2009.

Takano Y., Chikaraishi Y., Ogawa O. N., Kitazato H., Ohkouchi N., Compound-Specific Nitrogen Isotope Analysis of D-Alanine, L-Alanine and Valine: Application of Diastereomer Separation to delta15N and Microbial Peptidoglycan Studies, Analytical Chemistry, 81, 394-399, 2009.

Maria Luisa G. Tejada, Katsuhiko Suzuki, Junichiro Kuroda, Rodolfo Coccioni, John J. Mahoney, Naohiko Ohkouchi, Tatsuhiko Sakamoto, Yoshiyuki Tatsumi, Ontong Java Plateau eruption as a trigger for the Early Aptian oceanic anoxic event, Geology, 37, 9, 855-858; DOI: 10.1130/G25763A.1- 2009.

2008
Shah S. R., Mollenhauer G., Ohkouchi N., Eglinton T. I., Pearson A., Origins of archaeal tetraether lipids in sediments: Insights from radiocarbon analysis., Geochim. Cosmochim. Acta, 72, 4577-4594, 2008.

Chikaraishi Y., Kashiyama Y., Ogawa N. O., Kitazato H., Satoh M., Nomoto S., Ohkouchi N., A compound-specific isotope method for measuring the stable nitrogen isotopic composition of tetrapyrroles., Organic Geochemistry, 39, 5, 510-520, 2008.

Yuichiro Kashiyama, H. Miyashita, S. Ohkubo, Nanako O. Ogawa, Yoshito Chikaraishi, Yoshinori Takano, Hisami Suga, Takashi Toyofuku, Hidetaka Nomaki, Hiroshi Kitazato, T. Nagata, Naohiko Ohkouchi, Evidence of Global Chlorophyll d, Science, 321, 5889, 658-658, 2008.

Neal C. R., Coffin M. F., Duncan R. A., Eldholm O., Erba E., Farnetani C., Fitton G., Ingle S. P., Ohkouchi N., Rampino M. R., Reicow M. K., Self S., Tatsumi Y., Investigating Large Igneous Province formation and associated paleoenvironmental events: A white paper for scientific drilling. , Scientific Drilling Journal, 6, 4-18, 2008.

Yaeko Suzuki, Yoshito Chikaraishi, Nanako O. Ogawa, Naohiko Ohkouchi, Takashi Korenaga, Geographical origin of polished rice based on multiple element and stable isotope analyses, Food Chemistry, 109, 470-475, 2008.

Ohkouchi N., Eglinton T.I., Compound-specific radiocarbon dating of Ross Sea sediments: A prospect for constructing chronologies in high-latitudinal oceanic sediments, Quaternary Geochronology, - 2008.

Kashiyama Y., Ogawa N.O., Tada R., Kitazato H., Ohkouchi N., Biogeochemistry and ecology of photoautotrophs reconstructed from nitrogen and carbon isotopic compositions of vanady1 porphtrins from Miocene siliceous sediments, Biogeosciences, - 2008.

Yuichiro Kashiyama, Nanako O. Ogawa, Junichiro Kuroda, Motoo Shiro, Shinya Nomoto, Ryuji Tada, Hiroshi Kitazato, Naohiko Ohkouchi, Diazotrophic cyanobacteria as the major photoautotrophs during mid-Cretaceous oceanic anoxic events: Nitrogen and carbon isotopic evidence from sedimentary porphyrin, Organic Geochemistry, - 2008.

R.G. Jenkins, Y. Hikida, Y. Chikaraishi, N. Ohkouchi, S. Ogihara, K. Tanabe, Microbially induced coated grains in the Late Cretaceous methane-seep deposit at the Nakagawa area, Hokkaido, northern Japan, Isl. Arc, - 2008.

Naohiko Ohkouchi, Yoji Nakajima, Nanako O. Ogawa, Yoshito Chikaraishi, Hisami Suga, Saburo Sakai, Hiroshi Kitazato, Carbon isotopic composition of the tetrapyrrole nucleus in chloropigments from a saline meromictic lake: A mechanistic view for interpreting the isotopic signature of alkyl porphyrins in geological samples, Organic Geochemistry, 39, 5, 521-531, 2008.

Nomaki Hidetaka, Nanako O. Ogawa, Naohiko Ohkouchi, Hisami Suga, Takashi Toyofuku, Motohiro Shimanaga, Takeshi Nakatsuka, Hiroshi Kitazato, Benthic foraminifera as trophic links between phytodetritus and benthic metazoans: carbon and nitrogen isotopic evidence, Marine Ecology Progress Series, 357, 153-164, 2008.

2007
Kashiyama Y., Shiro M., Tada R., Ohkouchi N., A novel vanadyl alkylporphyrins from geological samples: a possible derivative of divinylchlorophylls or bacteriochlorophyll a?, Chemistry Letters, 36, 706-707, 2007.

Yoshito Chikaraishi, Yuichiro Kashiyama, Naohiko Ohkouchi, 22, 43-55, 2007.

Chikaraishi Y., Matsumoto K., Kitazato H., Ohkouchi N. , Sources and transformation processes of pheopigments: Carbon and hydrogen isotopic evidence from Lake Haruna, Japan. , Org. Geochem., 38, 6, 985-1001, 2007.

Chikaraishi Y., Kashiyama Y., Ogawa N.O., Kitazato H., Ohkouchi N. , Metabolic controls of nitrogen isotopic composition of amino acids in marine macroalgae and gastropods: implications for aquatic food web studies., Mar. Ecol.-Prog. Ser., 342, 85-90, 2007.

Yuichiro Kashiyama, Hiroshi Kitazato , Naohiko Ohkouchi, An improved method for isolation and purification of sedimentary porphyrins by high-performance liquid chromatography for compound-specific isotopic analysis, Journal of ChromatographyA, 1138, 73-83, 2007.

M. Noumi, Y. Yokoyama,H. Miura, N. Ohkouchi, Melting history of the West Antarctic Ice Sheet since the Last Glacial Maximum, 56, 12, - 2007.

Junichiro Kuroda, Nanako O. Ogawa, Masaharu Tanimizu, Millard F. Coffin, Hidekazu Tokuyama, Hiroshi Kitazato, Naohiko Ohkouchi, Contemporaneous massive subaerial volcanism and Late Cretaceous oceanic anoxic event 2, Earth Planet. Sci. Lett., 256, '1/2, 211-223, 2007.

2006
Yusuke Yokoyama, Tatsuhiro Naruse, Nanako O. Ogawa, Ryuji Tada, Hiroshi Kitazato, Naohiko Ohkouchi, Dust influx reconstruction during the last 26,000 years inferred from a sedimentary leaf wax record from the Japan Sea, Global and Planetary Change, 54, 3-4, 239-250, 2006.

Yokoyama Y., Naruse T, Ogawa N.O., Tada R, Kitazato H, Ohkouchi N, Links between Asian Monsoon and North Atlantic climate during the last 23,000 years inferred from concentrations of Lipid biomarker in the Japan Sea sediment core, Global Planetary Change, 54, 239-250, 2006.

N. Ohkouchi, Y. Kashiyama, J. Kuroda, N.O. Ogawa, H. Kitazato, The importance of diazotrophic cyanobacteria as primary producers during Cretaceous Oceanic Anoxic Event 2, Biogeosciences, 3, 12, 467-478, 2006.

Koji Kameo, Makoto Okada, Moamen El-Masry, Toshio Hisamitsu, Saneatsu Saito, Hiroomi Nakazato, Naohiko Ohkouchi, Minoru Ikehara, Hisato Yasuda, Hiroshi Kitazato, Asahiko Taira, Age model, physical properties and paleoceanographic implications of the middle Pleistocene core sediments in the Choshi area, central Japan., Isl. Arc, 15, 3, 366-377, 2006.

Nomaki H., Heinz P., Nakatsuka T., Shimanaga M., Ohkouchi N., Ogawa N.O., Kogure K., Ikemoto E., Kitazato H., Different ingestion patterns of 13C-labeled bacteria and algae by deep-sea benthic foraminifera., Marine Ecology Progress Series, 310, 95-108, 2006.

Junichiro Kuroda, Naohiko Ohkouchi, Implication of spatiotemporal distribution of black shales deposited during Cretaceous Oceanic Anoxic Event-2, Paleontological Research, 10, 4, 345-358, 2006.

Naohiko Ohkouchi, Y. Kashiyama, J. Kuroda, N.O. Ogawa, H. Kitazato, An importance of diazotrophic cyanobacteria as a primary producer during Cretaceous Oceanic Anoxic Event 2, Biogeosciences Discuss, 3, 575-605, 2006.

2005
Chikaraishi Y., Matsumoto K., Ogawa N.O., Suga H., Kitazato H., Ohkouchi N. , Hydrogen, carbon and nitrogen isotopic fractionations during chlorophyll biosynthesis in C3 higher plants. , Phytochemistry, 66, 8, 911-920, 2005.

Naohiko Ohkouchi, Youji Nakajima, Hisatake Okada, Nanako O. Ogawa, Hisami Suga, Kazumasa Oguri, Hiroshi Kitazato, Biogeochemical processes in the saline meromictic Lake Kaiike, Japan: Implications from molecular isotopic evidences of photosynthetic pigments., Env. Microbiol., 7, 7, 1009-1016, 2005.

Junichiro Kuroda, Naohiko Ohkouchi, Teruaki Ishii, Hidekazu Tokuyama, Asahiko Taira, Lamina-scale analysis of sedimentary components in Cretaceous black shales by chemical compositional mapping: Implications for paleoenvironmental changes during the Oceanic Anoxic Events, Geochim. Cosmochim. Acta, 69, 6, 1479-1494, 2005.

N. Ohkouchi, Y. Nakajima, H. Okada, H. Kitazato, Copper-chelated bacteriochlorophyll e homologues in the sediments from anoxic Lake Abashiri (Japan), Organic Geochemistry, 36, 1576-1580, 2005.

2004
Y. Nakajima, H. Shimizu, O. Ogawa, T. Sakamoto, H. Okada, K. Koba, H. Kitazato, O. Ohkouchi, Vertical distributions of stable isotopic composition s and bacteriochlorophyll homologues in suspended particulate matter in saline meromictic Lake Abashiri, Limnology, 5, 185-189, 2004.

2002
Naohiko Ohkouchi, Timothy Eglinton, Lloyd Keigwin, John Hayes, Spatial and temporal offsets between proxy records in a sediment drift, Science, 298, 1224-1227, 2002.