Effects of peripheral habitat of the distribution as an attractive-sink on brown bear population and human society
| Project/Area Number |
17H03627
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Conservation of biological resources
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| Research Institution | Rakuno Gakuen University |
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Principal Investigator |
Sato Yoshikazu 酪農学園大学, 農食環境学群, 教授 (60366622)
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| Co-Investigator(Kenkyū-buntansha) |
馬場 まゆら (高田まゆら) 中央大学, 理工学部, 准教授 (10466807)
伊藤 哲治 酪農学園大学, 農食環境学群, 講師 (70751931)
石橋 靖幸 国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (80353580)
中下 留美子 国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (00457839)
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| Project Period (FY) |
2017-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥19,630,000 (Direct Cost: ¥15,100,000、Indirect Cost: ¥4,530,000)
Fiscal Year 2020: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2019: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2017: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
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| Keywords | 個体群の空間構造 / アトラクティブ・シンク / 普通種の管理 / 安定同位体 / DNA多型 / カメラトラップ / 非侵襲的モニタリング / カメラ・トラップ / 保全生物 / 個体群動態 / 同位体生態 / 遺伝生態 / 景観生態 / 背擦りトラップ |
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| Outline of Final Research Achievements |
In the Akan-Shiranuka area of Hokkaido, male brown bears with a larger home range size have a higher corn utilization rate than females, and 81% of males use it. Many extermination of bears as a result of invasions into crop fields by bears occurred in the southwestern (peripheral) part of the area. Bears in the northeastern (core) part and the western (surrounding) part are moving into the southwestern (peripheral) part. As a result of continued extermination of bears, the population density of female bears was lower in the southwestern part than the northeastern part of the population. It is necessary to exterminate most of the population in order to reduce the invasion only by extermination, which is not realistic from the viewpoint of population conservation. It is necessary to take non-lethal measures to prevent the bears from becoming problem individuals by implementing control such as installing an electric fence.
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| Academic Significance and Societal Importance of the Research Achievements |
ヒグマの出没や作物への食害に対して行ってきた従来の対症療法としての駆除だけでは農地に出没する問題個体を減らすことができず，また個体群の保全上危機的状況をもたらす可能性が示された。過去30年間にわたり増加を続けている北海道における人とヒグマとの軋轢を軽減していくために，問題個体を生み出さないための出没原因の除去や農地侵入防止など未然防除を併用すること，そのための実行体制として専門人材の配置と実施計画の策定，評価と見直しの仕組みを整えることが重要である。次期管理計画の改定にこれらの仕組みが反映されれば，計画の目標である軋轢の低減と個体群の保全の両立に向けた新しい一歩に繋がると期待される。
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Report
(5 results)
Research Products
(29 results)
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[Journal Article] Testicular regulation of seasonal change in apocrine glands in the back skin of the brown bear (<i>Ursus arctos</i>)2018
Author(s)
Tomiyasu, J., Kondoh, D., Yanagawa, Y., Sato, Y., Sakamoto, H., Matsumoto, N., Sasaki, K., Haneda, S. & Matsui, M.
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Journal Title
Journal of Veterinary Medical Science
Volume: 80
Issue: 6
Pages: 1034-1040
DOI
NAID
ISSN
0916-7250, 1347-7439
Related Report
Peer Reviewed
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[Journal Article] Population monitoring of brown bears using camera-traps with scented wooden posts in the Akan-Shiranuka region, eastern Hokkaido, Japan.2017
Author(s)
Sato, Y., Kato, A., Tsukano, M., Shibata, S., Suzuki, S. and Ishibashi, Y.
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Journal Title
Materials of the International Scientific and Practical Conference on Ecological and Biological Well-being of Flora and Fauna
Volume: －
Pages: 64-66
Related Report
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[Presentation] Simple feeding habits of brown bears on Kunashiri Island -- a comparison with brown bears in Shiretoko Peninsula and Shiranuka, Hokkaido, Japan2018
Author(s)
Nakashita, R., Kobayashi, K., Ito, T., Nakamura, H., Iijima, H., Masuda, Y., Loguntsev, A., Shimozuru, M., Hata, A., Tsuruga, H., Yamanaka, M., Otaishi, O. & Sato, Y.
Organizer
26th International Conference on Bear Research and Management
Related Report
Int'l Joint Research
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[Presentation] Population genetic analysis of the brown bear (Ursus arctos) in the Akan-Shiranuka region, eastern Hokkaido, Japan.2018
Author(s)
Kato, A., Itoh, T., Mizunashi, K., Ishibashi, Y. Mano, T. & Sato, Y
Organizer
26th International Conference on Bear Research and Management
Related Report
Int'l Joint Research
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[Presentation] 国後島のヒグマのシンプルな食性－知床半島・白糠丘陵に生息するヒグマとの比較2018
Author(s)
中下留美子, 小林喬子, 伊藤哲治, 中村秀次, 飯島勇人, 増田泰, ログンツェフA, 大泰司紀之, 下鶴倫人, 秦彩夏, 釣賀一二三, 山中正実, 佐藤喜和
Organizer
日本生態学会第65回全国大会
Related Report
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[Presentation] Population monitoring of brown bears using camera-traps with scented wooden posts in the Akan-Shiranuka region, eastern Hokkaido, Japan.2017
Author(s)
Sato, Y., Kato, A., Tsukano, M., Shibata, S., Suzuki, S. and Ishibashi, Y.
Organizer
International Conference on Ecological and Biological Well-being of Flora and Fauna
Related Report
Int'l Joint Research
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[Book] Bears of the World. Ecology, Conservation and Management2021
Author(s)
Penteriani V., Melletti M., Kitchener, A.C., Bellemain, E., Ding, X., Kopaz, A., Kutschera, V.E., Salomashkina, V., Ruiz-Garcia, M., Graves, T., Hou, Y., Werdelin, L., Janle, A., Sato, Y. and others
Total Pages
388
Publisher
Cambridge University Press
ISBN
9781108483520
Related Report
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