• Futoshi Nakamura
Part of the Ecological Research Monographs book series (ECOLOGICAL)


The farmland in East Hokkaido, which encompasses two-thirds of Japan’s wetland ecosystems, has been extensively developed since the dramatic period of economic growth after World War II, and this has produced major changes in wetland and riparian ecosystems. Blakiston’s fish owl and the red-crowned crane are regarded as umbrella species in these ecosystems, and the populations of these endangered species are gradually increasing with the help of Japan’s Programs for the Rehabilitation of Natural Habitats and Maintenance of Viable Populations, based on the Act on Conservation of Endangered Species of Wild Fauna and Flora. However, it is difficult to maintain these populations at sufficient levels under the current natural conditions, because of the significant alteration in their original habitat environment. Moreover, it is expected that the human populations of most of East Hokkaido’s municipalities will decrease by about 40% by 2035, relative to 2005. As a result, dramatic changes in land use, including the abandonment of many farmlands, may occur in the next few decades.


  1. Heber S, Briskie JV (2010) Population bottlenecks and increased hatching failure in endangered birds. Conserv Biol 24:1674–1678CrossRefGoogle Scholar
  2. Nagata H, Yamagishi S (2013) Re-introduction of crested ibis on Sado Island, Japan. In: Soorae PS (ed) Global re-introduction perspectives: 2013. Further case studies around the globe. IUCN/SSC Re-introduction Specialist Group/Environment Agency-Abu Dhabi Gland, Switzerland/Abu Dhabi, UAE, pp 58–62Google Scholar
  3. Naito K, Ikeda H (2007) Habitat restoration for the reintroduction of oriental white storks. Global Environ Res 11:217–221Google Scholar
  4. Omote K, Nishida C, Dick HM, Masuda R (2013) Limited phylogenetic distribution of a long tandem-repeat cluster in the mitochondrial control region in Bubo (Aves, Strigidae) and cluster variation in Blakiston’s fish owl (Bubo blakistoni). Mol Phylogenet Evol 66:889–897CrossRefGoogle Scholar
  5. Wink M, El-Sayed AA, Sauer-Gürth H, Gonzalez J (2009) Molecular phylogeny of owls (Strigiformes) inferred from DNA sequences of the mitochondrial cytochrome b and the nuclear RAG-1 gene. Ardea 97(4):581–591CrossRefGoogle Scholar

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© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Graduate School of AgricultureHokkaido UniversitySapporoJapan

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