PhD in a study of vibrio species, a group of marine bacteria including human and animal pathogen, University of Tokyo

Teaching Interests: Oceanography, Microbial Ecology
Research Interests: Biogeochemical cycles, Environmental Microbiology

Selected Publications:

• Urakawa H., J. C. Garcia, P. D. Barreto, G. A. Molina and J. C. Barreto (2012) A sensitive crude oil bioassay indicates that oil spills potentially induce a change of major nitrifying prokaryotes from the Archaea to the Bacteria. Environmental Pollution 164:42-45.
• Walker C.B., J.R. de la Torre, M.G. Klotz, H. Urakawa, N. Pinel, D. J. Arp, C. Brochier-Armanet, P. S. G. Chain, P. P. Chan, A. Gollabgir, J. Hemp, M. Hügler, E. A. Karr,M. Könneke, M. Shin, T. J. Lawton, T. Lowe, W. Martens-Habbena, L. A. Sayavedra-Soto, D. Lang, S. M. Sievert, A. C. Rosenzweig, G. Manning, and D. A. Stahl (2010) Nitrosopumilus maritimus genome reveals unique mechanisms for nitrification and autotrophy in globally distributed marine crenarchaea. Proceedings of the National Academy of Sciences of the USA 107:8818-8823.
• Martens-Habbena, W., P. M. Berube, H. Urakawa, J. R. de la Torre and D. A. Stahl (2009) Ammonia oxidation kinetics determine niche separation of nitrifying Archaea and Bacteria. Nature 461:976-979.
• Urakawa, H., Y. Tajima, Y. Numata and S. Tsuneda (2008) Low temperature diminishes phylogenetic diversity of ammonia-oxidizing archaea and bacteria in aquarium biofiltration systems. Applied and Environmental Microbiology 74: 894-900.
• Urakawa, H., H. Maki, S. Kawabata, T. Fujiwara, H. Ando, T. Kawai, T. Hiwatari, K. Kohata, and M. Watanabe (2006) Abundance and population structure of ammonia-oxidizing bacteria that inhabit canal sediments receiving effluents from municipal wastewater treatment plants. Applied and Environmental Microbiology 72: 6845-6850.
• Urakawa, H., N. Dubilier, Y. Fujiwara, S. Kojima, D. E. Cunningham, D. A. Stahl (2005) Hydrothermal vent gastropods from the same family (Provannidae) harbor Epsilon and Gammaproteobacterial endosymbionts. Environmental Microbiology 7: 750-754.

Full Publication listing