Monitoring and Assessment of Marine Ecosystem


The oceans constitute the largest part of the earth's biosphere and provide habitats for various creatures from microbes to whales. We study how marine biodiversity came about, and how the marine ecosystem has evolved over geologic time.

1) Understanding the structure and evolution of the marine ecosystem (Yamamoto, H.)

2) Efficient use of up-to-date marine measurement tools is essential for multidimensional understandings of dynamic behavior of marine ecosystems. This study aims to contribute for realization of advanced marine measurement by developing novel tools and methods with cutting-edge sensor technologies. (Fukuba, T.)

3) In order to elucidate spatial temporal dynamics and its driving force of the marine ecosystem, we can take advantage of a variety of analytical techniques. I mainly focuses on application of the geographic information system (GIS) and the statistical model on broad scale spatial data from a seagrass bed or a submarine canyon scale to the all over the Asia Pacific extent. In recent years, I am also challenging the application issues such as the assessment of dynamic ecosystems and the definition of the important marine area. (Yamakita, T)



Ecosystems, Biodiversity, Evolution, Deep-sea, Symbiosis



Research at the hydrothermal vent field of Okinawa Trough (depth 1500 m)

Research at the hydrothermal vent field of Okinawa Trough (depth 1500 m)

Colony of deep-sea clams found around the seafloor observatory off Hatsushima in Sagami Bay(depth 1100 m)

Colony of deep-sea clams found around the seafloor observatory off Hatsushima in Sagami Bay(depth 1100 m)

Recent Publications

Yamamoto, H., K. Tanaka , K. Fujikura and T. Maruyama (2012) BISMaL: Biological Information System for Marine Life and Role for Biodiversity Research. In Shin-ichi Nakano et al. (eds.), The Biodiversity Observation Network in the Asia-Pacific Region: Toward Further Development of Monitoring, Ecological Research Monographs, p 247-256.

Lindsay, D. J., , H. Yoshida, T. Uemura, H. Yamamoto, S. Ishibashi, J. Nishikawa, J. D. Reimer, R. J. Beaman, R. Fitzpatrick, K. Fujikura, T. Maruyama (2012) The Untethered Remotely Operated Vehicle PICASSO-1 and Its Deployment From Chartered Dive Vessels for Deep Sea Surveys Off Okinawa, Japan, and Osprey Reef, Coral Sea, Australia. Marine Technology Society Journal, 46: 20-32.

Yoshida-Takashima, Y., T. Nunoura, H. Kazama, T. Noguchi, K. Inoue, H. Akashi, T. Yamanaka, T. Toki, M. Yamamoto, Y. Furushima, Y. Ueno, H. Yamamoto, K. Takai (2012) Applied and Environmental Microbiology, 78: 1311-1320.

Kumagai, H., S. Tsukioka, H. Yamamoto, T. Tsuji, K. Shitashima, M. Asada, F. Yamamoto, M. Kinoshita. (2010) Hydrothermal plumes imaged by high‐resolution side‐scan sonar on a cruising AUV, Urashima. Geochemistry Geophysics Geosystems, 11: Q12013, doi:10.1029/2010GC003337

Fukuba T., T. Miwa, S. Watanabe, N. Mochioka, Y. Yamada, M. J. Miller, M. Okazaki, T. Kodama, H. Kurogi, S. Chow, and T. Tsukamoto "A New Drifting Underwater Camera System for Observing Spawning Japanese Eels in the Epipelagic Zone Along the West Mariana Ridge", Fisheries Science, DOI: 10.1007/s12562-014-0837-4, Vol. 82, 2015

Fukuba, T and T. Fujii “Bioluminescence Detection for ATP Quantification Using Microfluidic Device" in Sonia Tiquia-Arashiro (ed.), Molecular Biological Technologies for Ocean Sensing, Springer Protocols Handbooks, DOI 10.1007/978-1-61779-915-0_3, Springer, pp. 203-217, 2012 Fukuba, T., A. Miyaji, T. Okamoto, T. Yamamoto, S. Kaneda and T. Fujii, “Integrated in situ Genetic Analyzer for Microbiology in Extreme Environments” RSC Advances 1, pp. 1567-1573, 2011

Fukuba, T., Y. Aoki, N. Fukuzawa, T. Yamamoto, M. Kyo and T. Fujii, “A Microfluidic in situ Analyzer for ATP Quantification in Ocean Environments” Lab Chip, 11, pp. 3508-3515, 2011

Yamakita, T., Yamamoto, H., Nakaoka, M., Yamano, H., Fujikura, K., Hidaka, K., Hirota, Y., Ichikawa, T., Kakehi, S., Kameda, T., Kitajima, S., Kogure, K., Komatsu, T., Kumagai, N. H., Miyamoto, H., Miyashita, K., Morimoto, H., Nakajima, R., Nishida, S., Nishiuchi, K., Sakamoto, S., Sano, M., Sudo, K., Sugisaki, H., Tadokoro, K., Tanaka, K., Jintsu-Uchifune, Y., Watanabe, K., Watanabe, H., Yara, Y., Yotsukura, N., and Shirayama, Y. (2015). Identification of important marine areas around the japanese archipelago: Establishment of a protocol for evaluating a broad area using ecologically and biologically significant areas selection criteria. Marine Policy, 51:136-147.

Yamakita, T. and Miyashita, T. (2014). Landscape mosaicness in the ocean: its significance for biodiversity patterns in benthic organisms and fish. In Nakano, S.-I., Yahara, T., and Nakashizuka, T., editors, Integrative Observations and Assessments (Ecological Research Monographs / Asia-pacific Biodiversity Observation Network), pages 131-148. Springer Japan.

Yamakita, T., Watanabe, K., and Nakaoka, M. (2010). Asynchronous local dynamics contributes to stability of a seagrass bed in tokyo bay. Ecography, 33:519-528.





Visiting Professor Yamamoto, H.
Visiting  Associate Professor Fukuba, T.
Visiting Associate Professor Yamakita, T.



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