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Ecosystem management on Amami Island, considering community processes.

Research Project

Project/Area Number 15310160
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Resource conservation science
Research InstitutionThe University of Tokyo

Principal Investigator

ISHIDA Ken  The University of Tokyo, Graduate School of Agricultural and Life Sciences, Associate Professor, 大学院・農学生命科学研究科, 助教授 (90192484)

Co-Investigator(Kenkyū-buntansha) MIYASHITA Tadashi  The University of Tokyo, Graduate School of Agricultural and Life Sciences, Associate Professor, 大学院・農学生命科学研究科, 助教授 (50182019)
TAKATSUKI Seiki  The University of Tokyo, the University Museum, Associate Professor, 総合研究博物館, 助教授 (00124595)
HATTORI Shosaku  The University of Tokyo, Institute of Medical Science, Associate Professor, 医科学研究所, 助教授 (00164864)
YAMADA Fumio  Forest and Forest Product Research Institute, Lab. of Wildlife, Chief Researcher, 鳥獣生態研究室, 室長(研究職) (10353905)
SEKI Shin-ichi  Forest and Forest Product Research Institute, Kyushu branch, Researcher, 九州支所, 研究員 (50343801)
Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥6,900,000 (Direct Cost: ¥6,900,000)
Fiscal Year 2004: ¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 2003: ¥4,300,000 (Direct Cost: ¥4,300,000)
KeywordsEcosystem Management / Adaptive management / Community process / Food web / Alien mammals / Amami-oshima Island / Biodiversity / Ecosystem model / 多来種
Research Abstract

Amami-oshima Island locates about 300km south-west from Kyushu Is., and north-eastern edge of Oriental Region. There are many endemic species, such as Pentalagus furnessi, Garrulus Iidthi, Zoothera major, and Babina subaspera. In 1990's alien Herpestes javanicus expanded its distribution within this Island, and in the high density area of this alien predator mammal, the number of many endemic animal species has decreased or even disappeared. Ministry of the Environment, Japan, has been controlling H.javanicus population since 2000 and targeting its eradication from this island. There are sometimes alien Rattus rattus in the forest, which is usually an important winter prey of H.javanicus. There may be also some indirect effects of H.javanicus population change through R.rattus and other intermediate native predators on the lower prey species. There are annual fluctuation of acorns and R.rattus and several native animals depend on acorns much. The ecosystem of the forest on Amami Island is dynamic and complicated. Understanding its processes is interesting and important to conserve the nature. We investigated the animal density, observed and hypothetic food web, and present problems of its conservation in terms of the ecosystem restoration measurements.

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (1 results)

All Other

All Publications (1 results)

  • [Publications] 石田 健, 宮下 直, 山田 文夫: "群集動簾考慮した生態系管理の課題と展望、奄美大鳥における外来種問題の事例"保全生態学研究. 8巻. 159-168 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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