Tradeoff Between Hot spring Use and River Ecosystem: The Case of Beppu City, Oita Prefecture, Japan

  • Makoto Yamada
  • Hisami Honda
  • Taketoshi Mishima
  • Shinji Ohsawa
  • Jun Shoji
Part of the Global Environmental Studies book series (GENVST)


In Hirata River at Beppu, Oita prefecture, the inflow of hot spring drainage into the rivers increases the Nile tilapia, an alien species. It is a tradeoff between the hot spring use and river ecosystem. In order to understand details of the mechanisms connecting hot spring use and ecosystem, we investigated the river water quality and the water temperature from the upper reaches to the river mouth in the Hirata River. The results show that the hot spring drainage flowing in a specific section affects the estuary area. Additionally, it is revealed that the current average water temperature of hot spring drainage is very good condition for Nile tilapia in the estuary area. It is suggested that the tradeoffs between the hot spring use and the ecosystems can be resolved by suppressing high-temperature unused hot spring drainage, and/or by collecting hot spring drainage and reduce its average temperature further by using its thermal energy more extensively.


Hot spring drainage Hot spring use River ecosystem Tradeoff 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Makoto Yamada
    • 1
  • Hisami Honda
    • 2
  • Taketoshi Mishima
    • 3
  • Shinji Ohsawa
    • 4
  • Jun Shoji
    • 5
  1. 1.Faculty of EconomicsRyukoku UniversityKyotoJapan
  2. 2.Research Institute for Humanity and NatureKyotoJapan
  3. 3.Institute for Geothermal Sciences, Graduate School of ScienceKyoto UniversityKyotoJapan
  4. 4.Beppu Geothermal Research Laboratory, Institute for Geothermal Sciences, Graduate School of ScienceKyoto UniversityBeppuJapan
  5. 5.Costal EcologyHiroshima UniversityHigashi-hiroshimaJapan

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