図書刊行:Takada A (2020) The ecology of playful childhood: Caregiver-child interactions among the San of southern Africa. New York: Palgrave Macmillan. 244p.
論文刊行:Nhu Y et al. [Harada H = 4th author] (2020) Interspecific variation in foliar nutrients and isotopes of submerged macrophytes in the Cau Hai Lagoon, the typical brackish lagoon in Vientam. Botanica Pacifica. A journal of plant science and conservation 9: 131-138.
論文刊行:Dang TTL, Le VT, Harada H, Duong VH, Pham KL, Duong TC (2020) Enhancement of water disinfection efficiency using UV radiation with the aid of a liquid-film-forming device. Vietnam Journal of Science and Technology 58(3A): 203-210.
論文刊行:Otsuka R, Yamakoshi G (2020) Analyzing the popularity of YouTube videos that violate mountain gorilla tourism regulations. PLoS ONE 15: e0232085
論文刊行:Hanya et al. [Otsuka R = 9th author] (2020) Fermentation ability of gut microbiota of wild Japanese macaques in the highland and lowland Yakushima: In vitro fermentation assay and genetic analyses. Microbial Ecology. doi: 10.1007/s00248-020-01515-8.
論文刊行:Albert-Daviaud et al. [Sato H = 7th author] (2020) The ghost fruits of Madagascar: Identifying dysfunctional seed dispersal in Madagascar’s endemic flora. Biological Conservation 242: 108438.
Bruce J. Berman and Motoki Takahashi (2019) Ethnicity, Development, and Social Cohesion in Africa: Overview. Hiroyuki Hino, Arnim Langer, John Lonsdale and Frances Stewart eds. From Divided Pasts to Cohesive Futures: Reflections on Africa, Cambridge, New York and Port Melbourne: Cambridge University Press. Pp 161-189.