I am a theoretical ecologist largely interested in conservation biology, and motivated by the need to understand the interplay between ecological and socioeconomic dynamics. General topics of ecology, such as macroecology and population dynamics, also attract my interests. My current research projects include analyzing the effect of marine protected area and ecosystem-based fisheries management, and developing an ecosystem model that describes macroecological patterns across spatial scales.

Professional Experience

2019 May -  Present        Postdoctoral Researcher of Japan-Norway Researcher Mobility Programme,
                                     Department of Biology, University of Bergen
2017 Apr - 2020 Jul         JSPS Postdoctoral Research Fellow, Biodiversity and Biocomplexity Unit,
                                         Okinawa Institute of Science and Technology Graduate School
2015 Apr - 2017 Mar        Postdoctoral Researcher, Tropical Biosphere Research Center, University of the Ryukyus
                                         (Visiting academic in Possingham Lab at the University of Queensland)
2012 Apr - 2015 Mar         JSPS Predoctoral Research Fellow


2012 Apr - 2015 Mar        Ph.D., Theoretical Ecology at Kyushu University, Japan (Adviser: Yoh Iwasa)
2010 Apr - 2012 Mar        M.S.
, Theoretical Ecology at Kyushu University, Japan (Adviser: Yoh Iwasa)
2006 Apr - 2010 Mar        B.S., Rissho University, Japan (Adviser: Michinori Yamashita)


Peer-Reviewed Articles
  1. Takashina, N. and Ø. Fiksen, Optimal reproductive phenology under size-dependent cannibalism, Ecology and Evolution, 10:4241-4250 (2020) [PDF]
  2. Takashina, N., B. Kusumoto, Y. Kubota & E.P. Economo, A geometric approach to scaling individual distributions to macroecological patterns, Journal of Theoretical Biology 461:170-188 (2019) (Abstract) [PDF]
  3. Takashina, N., B. Kusumoto, M. Beger, S. Rathnayake & H.P. Possingham, Spatially explicit approach to population abundance estimation in field surveys, Journal of Theoretical Biology, 453:88-95 (2018), [PDF]
  4. Braczkowski, A., M.H. Holden, C. O'Bryan, C.Y. Choi, X. Gan, N. Beesley, Y. Gao, J. Allan, P. Tyrrell, D. Stiles, P. Brehony, R. Meney, H. Brink, N. Takashina, M.C. Lin, H.Y. Lin, N. Rust, S.G. Salmo III, J.E.M. Watson, P. Kahumbu, M. Maron, H.P. Possingham & D. Biggs, Reach and messages of the world's largest ivory burn. Conservation Biology, 32:765-773 (2018)  (Abstract)
  5. Takashina, N., M. Beger, B. Kusumoto, S. Rathnayake & H.P. Possingham, A theory for ecological survey methods to map individual distributions, Theoretical Ecology, 11:213-223 (2018) [PDF]
  6. Takashina, N., J.H. Lee & H.P. Possingham, Effect of marine reserve establishment on non-cooperative fisheries management, Ecological Modelling, 360:336-342, (2017) [PDF]
  7. Takashina, N., Simple rules for establishment of effective marine protected areas in an age-structured metapopulation dynamics. Journal of Theoretical Biology,  391:88-94, (2016) (Abstract) [PDF]
  8. Takashina, N. & M.L. Baskett, Exploring the effect of the spatial scale of fishery management. Journal of Theoretical Biology, 390:14-22, (2016) (Abstract) [PDF]
  9. Takashina, N. & A. Mougi, Maximum sustainable yields from a spatially-explicit harvest model. Journal of Theoretical Biology, 383:87-92, (2015) (Abstract) [PDF]
  10. Takashina, N. & A. Mougi, Effects of marine protected areas on overfished fishing stocks with multiple stable states, Journal of Theoretical Biology, 341:64-70, (2014) (Abstract) [PDF]
  11. Takashina, N., A. Mougi & Y. Iwasa, Paradox of marine protected area: suppression of fishery may cause species loss. Population Ecology, 54:475-485, (2012) (Abstract) [PDF]
  12. Takashina, N., M. Yamashita, and H. Matsuda, Mathematical analysis for fisheries ecosystem management. (In Japanese) Geo-Environmental Research, Rissho University, 12:115-119, 2010
Under review
  1. Takashina, N.,  M.J. Plank, C.N. Jenkins and E.P. Economo.
  2. Takashina, N. and E.P. Economo.
  3. Takashina, N. et al.
  4. Takashina, N., On the spillover effect and optimal size of marine reserves, bioRxiv 853879
Non-Reviewed Articles
  1. Takashina, N., A. Asao, N. Nakamura, Mathematical analysis of smoking population dynamics: an epidemiological model. RIMS Kôkyûroku, 1706:35-40, 2010

Referee Activities

Applied Mathematical Modelling, Bulletin of Mathematical Biology, Conservation Biology, Ecology Letters, Ecosphere, Global Ecology and Biogeography, Japanese Journal of Ecology, Journal of Theoretical Biology, Marine Policy, Mathematical Biosciences, Molecular Ecology Resources, Natural Resource Modeling, Norwegian Journal of Geography, PLOS ONE, Population Ecology, Theoretical Ecology, Theoretical Population Biology

Contact: nao.takashina "at" gmail.com