Ecological Developmental Adaptability Life Sciences :
Ecological Dynamics


Assistant Professor OSADA Yutaka
Campus Aobayama campus
Laboratory Ecological Integration
Tel +81-22-795-6696
Website https://ytosada.wixsite.com/main
Google scholar


Born in 1986 in Chiba. I am an ecologist interested in complex natural phenomena. My main research focus is to develop theoretical predictions and analytical methods that are missing pieces in understanding natural phenomena.
PhD, The University of Tokyo
RIHN Center Researcher, Research Institute for Humanity and Nature
Project Assistant Professor, Tohoku University
Researcher, Japan Fisheries Research and Education Agency
Project Assistant Professor, Tohoku University
Selected Publications
  1. Y. Osada, J. Matsubayashi, I. Tayasu (2021) Diagnosing underdetermination in stable isotope mixing models. Plos One 16: e0257818.
  2. K. Fukaya, H. Murakami, S. Yoon, K. Minami, Y. Osada, S. Yamamoto, R. Masuda, A. Kasai, K. Miyashita, K. Miyashita, T. Minamoto, M. Kondoh (2021) Estimating fish population abundance by integrating quantitative data on environmental DNA and hydrodynamic modeling. Molecular Ecology 30: 3057-3067.
  3. H. Okamura, Y. Osada, S. Nishijima, S. Eguchi. (2021) Novel robust time series analysis for long-term and short-term prediction. Scientific Report 11: 1-18.
  4. J. Matsubayashi, Y. Osada, K. Tadokoro, Y. Abe, A. Yamaguchi, K. Shirai, K. Honda, C. Yoshikawa, N. Ogawa, N. Ohkouchi, N. Ishikawa, T. Nagata, H. Miyamoto, S. Nishino, I. Tayasu (2020) Tracking long-distance migration of marine fishes using compound-specific stable isotope analysis of amino acids. Ecology Letters 23: 881-890.
  5. M. Ushio, Y. Osada, T. Kumagai, T. Kume, R. S. Pungga, T. Nakashizuka, T. Itioka, S. Sakai (2019) Dynamic and synergistic influences of air temperature and rainfall on general flowering in a Bornean lowland tropical forest. Ecological Research 35: 17-29.
  6. N. Katayama, Y. Osada, M. Mashiko, Y. Baba, K. Tanaka, Y. Kusumoto, S. Okubo, H. Ikeda, Y. Natuhara (2019) Organic farming and associated management practices benefit multiple wildlife taxa: A large-scale field study in rice paddy landscapes. Journal of Applied Ecology 8: 1970-1981.
  7. Y. Osada, T. Kuriyama, M. Asada, H. Yokomizo, T. Miyashita (2018) Estimating range expansion of wildlife in heterogeneous landscapes: a spatially explicit state-space matrix model coupled with an improved numerical integration technique. Ecology and Evolution 9: 318-327.
  8. Y. Kato, M. Kondoh, N. F. Ishikawa, H. Togashi, Y. Kohmatsu, M. Yoshimura, C. Yoshimizu, T. F. Haraguchi, Y. Osada, N. Ohte, N. Tokuchi, N. Okuda, T. Miki, I. Tayasu (2018) Using food network unfolding to evaluate food-web complexity in terms of biodiversity: theory and applications. Ecology Letters 21: 1065-1074.
  9. Y. Osada, T. Yamakita, E. Shoda-Kagaya, A. M. Liebhold, T. Yamanaka (2018) Disentangling the drivers of invasion spread in a vector‐borne tree disease. Journal of Animal Ecology 87: 1512-1524.
  10. Y. Hoshika, Y. Osada, A. De Marco, J. Penuelas, E. Paoletti (2017) Global diurnal and nocturnal parameters of stomatal conductance in woody plants and major crops. Global Ecology and Biogeography 27: 257-275.
  11. J. Matsubayashi, Y. Saitoh, Y. Osada, Y. Uehara, J. Habu, T. Sasaki, I. Tayasu (2017) Incremental analysis of vertebral centra can reconstruct the stable isotope chronology of teleost fishes. Methods in Ecology and Evolution 12: 1755-1763.
  12. Y. Osada, T. Kuriyama, M. Asada, H. Yokomizo, T. Miyashita (2015) Exploring the drivers of wildlife population dynamics from insufficient data by Bayesian model averaging. Population Ecology 57: 485-493.
Activities in Academic Societies
Ecological Society of Japan, Society for Population Ecology

Recent Activities

In nature, there are a number of diverse organisms living in complex interactions with each other. These interactions sometimes cause unexpected but exciting ecological phenomena. I am studying to reveal mechanisms behind emergent ecological phenomena by applying and developing novel analytical frameworks.

Message to Students

I believe it is important to understand how I myself see the nature. Through enjoying science, I look forward to get in touch with your conception of the nature.