論文：
Chikaraishi Y., Kashiyama Y., Ogawa N.O., Kitazato H., and Ohkouchi N. (2007) 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., and Ohkouchi N. (2007) A novel vanadyl alkylporphyrins from geological samples: a possible derivative of divinylchlorophylls or bacteriochlorophyll a? Chemistry Letters 36, 706-707.
Kashiyama Y., Kitazato H., and Ohkouchi N. (2007) 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., and Kitazato H. (2006) 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.
Ohkouchi N., Kashiyama Y., Kuroda J., Ogawa N.O., and Kitazato H. (2006) An importance of cyanobacteria as a primary producer during Cretaceous Oceanic Anoxic Event 2. Biogeosciences 3, 575-605.
Kashiyama Y. and Oji T. (2004) 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., and Montellano M. (2004) Genesis of a locality of Exceptional Fossil Preservation: Paleoenvironments of Tepexi de Rodgriguez (mid-Cretaceous, Puebla, Mexico). Cretaceous Research 25, 153-177.
総説等：
力石嘉人・柏山祐一郎・小川奈々子・大河内直彦 (2007) 生態学指標としての安定同位体：アミノ酸の窒素同位体分析による新展開, Radioisotopes 56, 463-477.
受賞歴：
E.J. Tynan Memorial Award，ロードアイランド大学，2002年.
理学系研究科研究奨励賞（博士）, 東京大学, 2007年