Population fluctuation and habitat preference of Ijima's Copper Pheasant <i>Syrmaticus soemmerringii ijimae</i>: an endemic, ‘near threatened’ Japanese subspecies
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- Ashizawa Koji
- Laboratory of Animal Reproduction, Faculty of Agriculture, University of Miyazaki
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- Kawaji Noritomo
- Hokkaido Research Center, Forestry and Forest Products Research Institute Graduate School of Dairy Science, Rakuno Gakuen University
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- Tanaka Akiko
- Laboratory of Animal Reproduction, Faculty of Agriculture, University of Miyazaki
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- Nagase Daigo
- Laboratory of Animal Reproduction, Faculty of Agriculture, University of Miyazaki
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- Matsumoto Yuta
- Laboratory of Animal Reproduction, Faculty of Agriculture, University of Miyazaki
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- Tatemoto Hideki
- Department of Bioproduction, Faculty of Agriculture, University of Ryukyus
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- Tsuzuki Yasuhiro
- Laboratory of Animal Reproduction, Faculty of Agriculture, University of Miyazaki
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抄録
Population fluctuations and habitat preferences of Ijima's Copper Pheasant Syrmaticus soemmerringii ijimae were investigated using a line transect method at two locations in southern Kyushu from 2002 to 2013. During the 12 years of the survey, transects were walked a total of 536 times (representing approximately 2,150 hours and a walking distance of around 3,590 km). The total number of encounters was only 127 birds, which represents one bird every 16.9 hours or 28.3 km. The number of birds encountered appeared to decrease steadily throughout the study period. The frequency of encounters was higher in evergreen and deciduous broad-leaved forests, and lower in mature cedar and cypress plantations. Therefore, it is suggested that increasing their preferred broad-leaved forest habitat would be an appropriate strategy for the recovery of the declining Ijima's Copper Pheasant population.
収録刊行物
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- ORNITHOLOGICAL SCIENCE
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ORNITHOLOGICAL SCIENCE 13 (2), 77-81, 2014
日本鳥学会
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詳細情報 詳細情報について
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- CRID
- 1390001205187975680
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- NII論文ID
- 130004725551
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- NII書誌ID
- AA11616388
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- HANDLE
- 10458/5067
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- ISSN
- 13470558
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- IRDB
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可