Changes in island ecosystems after eradication of invasive alien species: Proposal for management scenarios considering environmental heterogeneity
Project/Area Number |
25241025
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Research Category |
Grant-in-Aid for Scientific Research (A)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Environmental and ecological symbiosis
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Research Institution | Tokyo Metropolitan University |
Principal Investigator |
Naoki Kachi 首都大学東京, 理工学研究科, 教授 (30124340)
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Co-Investigator(Kenkyū-buntansha) |
川上 和人 国立研究開発法人森林総合研究所, 野生動物研究領域, 主任研究員 (50353652)
平舘 俊太郎 国立研究開発法人農業環境技術研究所, 生物多様性研究領域, 上席研究員 (60354099)
吉田 勝彦 国立研究開発法人国立環境研究所, 生物・生態系環境研究センター, 主任研究員 (70332244)
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Co-Investigator(Renkei-kenkyūsha) |
OSAWA Takeshi 独立行政法人農業環境技術研究所, 農業環境インベントリーセンター, 主任研究員 (40554332)
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Research Collaborator |
HATA Kenji 首都大学東京, 大学院理工学研究科, 特任研究員 (60468147)
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Project Period (FY) |
2013-04-01 – 2016-03-31
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Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥42,640,000 (Direct Cost: ¥32,800,000、Indirect Cost: ¥9,840,000)
Fiscal Year 2015: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
Fiscal Year 2014: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
Fiscal Year 2013: ¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
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Keywords | 生態系 / 外来生物 / 駆除 / 海洋島 / 土壌化学特性 / 海鳥 / 空間的不均質性 / 外来生物の駆除 / 生態系機能 / 物質循環 / 小笠原諸島 |
Outline of Final Research Achievements |
For restoration and managements of ecosystems degraded by anthropogenic disturbances such as invasion of invasive species, we evaluated effects of invasive exotic mammals on ecosystem function in oceanic islands and predicted changes in ecosystems after their eradication in consideration of spatial heterogeneity of biotic and abiotic environmental factors by field survey in the Ogasawara (Bonin) Islands and computer simulation. Our results suggested local scale variation of species-specific distributions of seabirds, soil chemical properties with soil erosion, establishment of plant species. The simulation based on constructed model predicted that eradication of non-native mammals promotes accumulation of soil nutrients with recovery of seabird nesting and loss of soil nutrients associating with soil erosion caused by vegetation degradation, which results in recovery of vegetation at some sites as well as not at other sites.
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Report
(4 results)
Research Products
(45 results)
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[Journal Article] Effects of soil erosion and seabird activities on chemical properties of surface soils on an oceanic island in Ogasawara Islands, Japan2015
Author(s)
Hiradate, S., Morita, S., Hata, K., Osawa, T., Sugai, K., Kachi, N.
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Journal Title
Catena
Volume: 133
Pages: 495-502
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Complex interrelationships among aboveground biomass, soil chemical properties, and events caused by feral goats and their eradication in a grassland ecosystem of an island2014
Author(s)
Hata, K., Kohri, M., Morita, S.. Hiradate, S., Kachi, N.
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Journal Title
Ecosystems
Volume: 未確定
Issue: 6
Pages: 1082-1094
DOI
Related Report
Peer Reviewed
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[Presentation] Influence of feral goat and seabird activities on chemical properties of surface soils on an oceanic island in Japan2015
Author(s)
Hiradate, S., Morita, S., Hata, K., Osawa, T., Kachi, N.
Organizer
Japan Geoscience Union 2015 Meeting
Place of Presentation
Makuhari, Japan
Year and Date
2015-05-24
Related Report
Int'l Joint Research
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[Presentation] The status and conservation of seabirds in the Ogasawara Islands, Japan(小笠原諸島における海鳥の現状と保全)2015
Author(s)
Suzuki, H., Horikoshi, K., Chiba, H., Ando, J., Kawakami, K. & Sasaki, T.
Organizer
神奈川県立生命の星地球博物館 小笠原最新研究ポスター発表会
Place of Presentation
小田原
Year and Date
2015-01-31
Related Report
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[Presentation] Phylogeography of Oriental Greenfinch: species-level divergence on oceanic islands2014
Author(s)
Saitoh, T., Ya Red’kin, Kawakami, K., Shigeta. Y., Nishiumi, I., Kim, C-H. & Kryukov, A.P.
Organizer
26th International Ornithological Congress
Place of Presentation
Tokyo
Year and Date
2014-08-18
Related Report
Int'l Joint Research
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[Presentation] Impacts of eradication of non-native animals on ecosystem functions of an oceanic island in the Ogasawara (Bonin) Islands, Japan2014
Author(s)
Kachi, N., Hata, K., Yoshida, K., Kawakami, K. & Hiradate, S.
Organizer
International Conference on Island Evolution, Ecology, and Conservation
Place of Presentation
Honolulu
Year and Date
2014-07-07
Related Report
Int'l Joint Research
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[Presentation] Complex interrelationships among aboveground biomass, soil chemical properties, and events caused by eradication of feral goats in an island ecosystem2014
Author(s)
Hata, K., Kohri, M., Morita, S., Hiradate, S. & Kachi, N.
Organizer
International Conference on Island Evolution, Ecology, and Conservation
Place of Presentation
Honolulu
Year and Date
2014-07-07
Related Report
Int'l Joint Research
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[Presentation] The recent evidence on the distribution of the seriously threatened Bryan’s shearwater in the Bonin Islands, subtropical Japan2014
Author(s)
Kawakami, K., Horikoshi, K., Suzuki, H., McKown, M. & Pyle, P.
Organizer
International Conference on Island Evolution, Ecology, and Conservation
Place of Presentation
Honolulu
Year and Date
2014-07-07
Related Report
Int'l Joint Research
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[Presentation] actors affecting soil erosion on an oceanic island in Ogasawara, Japan: the effects of soil chemical properties and landscape2014
Author(s)
Hiradate, S., Morita, S., Hata, K., Osawa, T., Suai, K. & Kachi, N.
Organizer
20th World Congress of Soil Science
Place of Presentation
Korea
Year and Date
2014-06-08
Related Report
Int'l Joint Research
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