Research Interests:Junichi Okuyama, Ph.D., is a Marine Biologist with the Marine Turtle Ecology and Assessment Program. He finished his Ph.D. at Kyoto University, Japan 2007 and then worked at Kyoto University as a Specially-appointed assistant professor (GCOE) for 5 yrs. He now works on 3-D movement and habitat utilization of sea turtles and its relationship with the changes/ shifts in water temperature using Bio-logging techniques. His research interests include the ecology and behavior, recognition of marine vertebrate, and conservation and field biology.
- Ph.D. Kyoto University, Japan, 2007
- M.Sc. Kyoto University, Japan, 2004
- B.Sc. Hokkaido University, Japan, 2002
- Junichi Okuyama, Kengo Kataoka, Masato Kobayashi, Osamu Abe, Kenzo Yoseda, Nobuaki Arai. The regularity of dive performance in sea turtles: a new perspective from precise activity data. Animal Behaviour (in press)
- Hideaki Nishizawa, Osamu Abe, Junichi Okuyama, Masato Kobayashi, Nobuaki Arai, Population genetic structure and natal philopatry of nesting green turtles (Chelonia mydas) in Yaeyama Islands, Japan. Endangered Species Research. 14: 141-148. 2011
- Junichi Okuyama, Takashi Kitagawa, Kei Zenimoto, Shingo Kimura, Nobuaki Arai, Yoshikazu Sasai, Hideharu Sasaki. Trans-Pacific dispersal of loggerhead turtle hatchlings inferred from numerical simulation modeling. Marine Biology. 158: 2055-2063. 2011
- Hideaki Nishizawa, Junichi Okuyama, Osamu Abe, Masato Kobayashi, Kenzo Yoseda, and Nobuaki Arai. The difference of activity between in the sea and in the tank of green turtle (Chelonia mydas) juveniles. Coastal Marine Science 34: 7-12. 2010
- Junichi Okuyama, Tomohito Shimizu, Osamu Abe, Kenzo Yoseda, Nobuaki Arai. Wild versus head-started hawksbill turtles Eretmochelys imbricata: post-release behavior and feeding adaptions. Endangered Species Research. 10: 181-190. 2010.
- Junichi Okuyama, Yuuki Kawabata, Yasuhiko Naito, Nobuaki Arai, Masato Kobayashi. Monitoring beak movements with an acceleration datalogger: a useful technique for assessing the feeding and breathing behaviors of sea turtles. Endangered Species Research. 10: 39-45. 2010.
- Hideaki Nishizawa, Junichi Okuyama, Masato Kobayashi, Osamu Abe, Nobuaki Arai. Comparative phylogeny and historical perspectives on population genetics of the Pacific hawksbill (Eretmochelys imbricata) and green turtles (Chelonia mydas). Zoological Science. 27: 14-18. 2010
- Junichi Okuyama, Osamu Abe, Hideaki Nishizawa, Masato Kobayashi, Kenzo Yoseda, Nobuaki Arai. Ontogeny of the dispersal movement of green turtle (Chelonia mydas) hatchlings. Journal of Experimental Marine Biology and Ecology. 379: 43-50. 2009.