An integrated approach to tropical and subtropical island conservation

Hiroya Yamano, Kiyoshi Satake, Tomomi Inoue, Taku Kadoya, Seiji Hayashi, Koichi Kinjo, Daisuke Nakajima, Hiroyuki Oguma, Satoshi Ishiguro, Azusa Okagawa, Shinsuke Suga, Tetsuya Horie, Katsuhito Nohara, Naoko Fukayama, Akira Hibiki

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


After the reversion of Okinawa (Ryukyu Islands) to Japan in 1972, extensive urban and agricultural development resulted in a significant increase in sediment discharge to coastal waters. The release of sediment has caused the degradation of freshwater and coastal ecosystems and biodiversity. A consideration for catchment-to-reef continua, as well as agricultural (socioeconomic) factors is necessary to establish proper land-based management plans for the conservation of the island environment. We have set up a framework to integrate biophysics and socioeconomics: 1) setting a conservation target and threshold, 2) identifying the sources and processes, and 3) examining cost-effectiveness and management priorities. The framework may be applicable to other tropical and subtropical islands with similar characteristics.

Original languageEnglish
Pages (from-to)271-279
Number of pages9
JournalJournal of Ecology and Environment
Issue number2
Publication statusPublished - 2015


  • Coral reef
  • Island conservation
  • Japan
  • Red-soil pollution
  • Ryukyu islands


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