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Kashiyama Y.*, Yokoyama A.*, Kinoshita Y., Shoji S., Miyashita H., Shiratori T., Suga H., Ishikawa K., Ishikawa A., Ishikawa A., Inouye I., Ishida K., Fujinuma D., Aoki K., Kobayashi M., Nomoto S., Mizoguchi T., Tamiaki H. (2012) Ubiquity and quantitative significance of detoxification catabolism of chlorophyll associated with protistan herbivory. Proceedings of National Academy of Sciences of the United States of America 109, 17328-17335.
*Co-first authors(Y. Kashiyama and A. Yokoyama contributed equally to this work.)

Sakuma H., Tada R., Ikeda M., Kashiyama Y., Ohkouchi N., Ogawa N.O., Watanabe S., Tajika E., Yamamoto S.(2012) High-resolution lithostratigraphy and organic carbon isotope stratigraphy of the Lower Triassic pelagic sequence in central Japan. Island Arc 21, 79-100.

Kashiyama Y., Ozaki K., Tajika, E. (2011) Impact of the evolution of carbonate ballasts on marine biogeochemistry in the Mesozoic and associated changes in energy delivery to subsurface waters. Paleontological Research 15, 89-99.

Asahina K., Asano J., Kumagai G., Satou M., Nomoto K., Kashiyama Y., Mita H., Nomoto S. (2010) The First Experimental Demonstration of Side Chain Extension of Geoporphyrins in Sediments. Chemistry Letters 39, 1267-1269.

Kashiyama Y. (2010b) Taphonomy of fossil porphyrins: To understand the past molecular isotopic signals. Research in Organic Geochemistry 26, 39-71. (in Japanese)

Tyler J., Kashiyama Y., Ohkouchi N., Ogawa N., Yokoyama Y., Chikaraishi Y., Staff R.A., Ikehara M., Bronk Ramsey C., Bryant C., Brock F., Gotanda K., Haraguchi T., Yonenobu H., Nakagawa T., Suigetsu 2006 Project Members (2010) Tracking aquatic change using chlorin-specific carbon and nitrogen isotopes: The last glacial-interglacial transition at Lake Suigetsu, Japan. Geochemistry, Geophysics, Geosystems 11, Q09010, doi:10.1029/2010GC003186.

Ohkouchi N., Chikaraishi Y., Kashiyama Y., Ogawa N.O. (2010) Isotopomers of chlorophyll nuclei: Theory and application. In: Ohkouchi N., Tayasu I., Koba K. (eds.) Earth, Life, and Isotopes, Kyoto University Press, Kyoto, pp. 313-335.

Kashiyama Y., Ogawa N.O., Nomoto S., Kitazato H., Ohkouchi N. (2010b) Nitrogen and carbon isotopic compositions of copper, nickel, and vanadyl porphyrins in Cretaceous black shales. In: Ohkouchi N., Tayasu I., Koba K. (eds.) Earth, Life, and Isotopes, Kyoto University Press, Kyoto, pp. 313-335.

Kusch S., Kashiyama Y., Ogawa N.O., Altabet M., Butzin M., Friedrich J., Ohkouchi N., Mollenhauer G. (2010) Implications for chloro- and pheopigment synthesis and preservation from combined compound-specific δ13C, δ15N, and Δ14C analysis, Biogeosciences 7, 4105-4118, doi:10.5194/bg-7-4105-2010.

Takano Y., Kashiyama Y., Ogawa N.O., Chikaraishi Y., Ohkouchi N. (2010) Isolation and desalting with cation-exchange chromatography for compound-specific nitrogen isotope analysis of amino acids: application to biogeochemical samples. Rapid Communications in Mass Spectrometry 24, 2317-2323.

Nomoto S., Asano J., Asahina K., Mita H., Kashiyama Y. (2010) Total synthesis of 17-nor-Deoxophylloerythroetioporphyrin. Bulletin of the Chemical Society of Japan 83, 819-821.

Kashiyama Y., Ogawa N.O., Chikaraishi Y., Kashiyama N., Sakai S., Tanabe K., Ohkouchi, N. (2010a) Reconstructing the life history of modern and fossil nautiloids based on the nitrogen isotopic composition of shell organic matter and amino acids. In: K. Tanabe, Y. Shigeta, T. Sasaki, H. Hirano (eds.), Cephalopod-Present and Past, Tokai University Press pp. 67-75.

Kashiyama Y. (2010a) "Fossils" of chlorophylls in geologic records. Japanese Journal of Phycology 58, 9-12.

Ohkouchi N. and Kashiyama Y. (2009) Geochemistry of Porphyrins as Molecular Markers of Chlorophylls. News Letter: The Japanese Society of Photosynthesis Research 19, 142-154.

Quan T.M., Kashiyama Y., Ohkouchi N., Falkowski P.G. (2009) Using nitrogen cycle proxies to determine paleoenvironmental variables. Geochimica et Cosmochimica Acta 73, A1064-A1064.

Chikaraishi Y. , Ogawa N.O., Kashiyama Y., Takano Y., Suga H., Tomitani A., Miyashita H., Kitazato H., Ohkouchi, N. (2009) Determination of aquatic food-web structure based on compound-specific nitrogen isotopic composition of amino acids. Limnology and Oceanography: Methods 7, 740-750.

Kashiyama Y., Miyashita H., Ohkubo S., Ogawa N.O., Chikaraishi Y., Takano Y., Suga H., Toyofuku T., Nomaki H., Kitazato H., Nagata T., Ohkouchi, N. (2008c) Evidence of Global Chlorophyll d. Science 321, 658-658.

Kashiyama Y., Ogawa N.O., Shiro M., Tada R., Kitazato H., Ohkouchi N. (2008b) Reconstruction of the biogeochemistry and ecology of photoautotrophs based on the nitrogen and carbon isotopic compositions of vanadyl porphyrins from Miocene siliceous sediments. Biogeosciences 5, 797-816.

Nomoto S., Satou M., Yoshida T., Mita H., Kumagai G., Nomoto K., Kigoshi H., Kashiyama Y. (2008) The First Experimental Demonstration of Benzoporphyrin Formation from Sedimentary Porphyrins. Chemistry Letters 37, 490-491.

Kashiyama Y., Ogawa N.O., Kuroda J., Kitazato H., Ohkouchi N. (2008a) Diazotrophic cyanobacteria as the major photoautotrophs during mid-Cretaceous Oceanic Anoxic Events: nitrogen and carbon isotopic evidence of sedimentary porphyrin. Organic Geochemistry 39, 532-549.

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

Chikaraishi Y., Kashiyama Y., Ohkouchi N. (2007c) HPLC/MS analysis of chloro- and pheo-pigments in algal, plant and sediment samples. Researches in Organic Geochemistry 22, 43-55.

Chikaraishi Y., Yuichiro Y., Ogawa N.O., Ohkouchi N. (2007b) Applications of stable isotopes in life sciences: Stable isotopes as ecological proxies: Compound-specific nitrogen isotopic analysis of amino acids. Radioisotopes 56, 36-58.

Chikaraishi Y., Kashiyama Y., Ogawa N.O., Kitazato H., Ohkouchi N. (2007a) Metabolic control of nitrogen isotope composition of amino acids in macroalgae and gastropods: implications for aquatic food web studies. Marine Ecology Progress Series 342, 85-90.

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

Kashiyama Y., Kitazato H., Ohkouchi N. (2007a) An improved method for isolation and purification of sedimentary porphyrins by high-performance liquid chromatography for compound-specific isotopic analysis. Journal of Chromatograpgy A 1138, 73-83.

Ohkouchi N., Nakajima Y., Ogawa N.O., Suga H., Kashiyama Y., Matsumoto K., Chikaraishi Y., Oguri K., Kitazato H. (2006b) Stable carbon and nitrogen compositions of photosynthetic pigments as tracers for elemental cycle in the modern- and paleo-environments. Frontier Research on Earth Evolution 2, 1-4.

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

Tada R., Watanabe S., Kashiyama Y., Tajika E., Kato T., Yamamoto S., Isozaki Y., Sakuma H. (2005) High-resolution analysis of Late Paleozoic - Early Mesozoic variability of paleoceanographic system recorded in bedded chert sequence in the Inner zone Southwest Japan. Journal of Geography 114, 638-642.

Kashiyama Y., Oji T. (2004b) Low diversity Smithian (Lower Triassic) fauna from northeast Japan: Paleoecologic and paleobiogeographic implications. Palaeontological Research 8, 199-218.

Kashiyama Y., Fastovsky D.E., Rutherford S., King J.W., Montellano M. (2004a) Genesis of a locality of Exceptional Fossil Preservation: Paleoenvironments of Tepexi de Rodgriguez (mid-Cretaceous, Puebla, Mexico). Cretaceous Research 25, 153-177.

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Yuichiro Kashiyama, FUT