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Environmental Studies (M.A.)

Environmental Studies (M.A.)

Toshi Urakawa

Associate Professor
Phone: (239) 590-1283
Office: SH 434

Toshi Urakawa joined the Marine Science faculty at Florida Gulf Coast University in the Spring of 2010. His fields of interest are environmental microbiology and microbial ecology. After completing his doctoral degree with a study of vibrio species, a group of marine bacteria including human and animal pathogen, at the University of Tokyo in 1998, he continued his research as a postdoctoral researcher in Dave Stahl’s lab in Northwestern University and University of Washington. In these places he studied molecular microbial ecology. In his early professional carriers, he studied the nitrogen cycle and the problem of eutrophication and dead zone (i.e. oxygen depletion) at National Institute for Environmental Studies and the University of Tokyo in Japan. Recently he studied ammonia-oxidizing Archaea and metagenomics in Dave Stahl’s lab at UW for better understanding of the nitrogen cycle. At FGCU, he studies biogeochemical cycles in Southwest Florida, interaction between microorganisms and other marine life (i.e. symbiosis and competition etc.), and biological and engineering water qualification technology as reducing means of human disturbance of aquatic environment (i.e. eutrophication and contamination of chemicals etc.). Dr. Urakawa teaches classes in Marine Systems (oceanography) and Microbial Ecology.

Dr. Urakawa's home page

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.

Please visit the following site for a full listing of publications