Sika deer response to spotlight counts: implications for distance sampling of population density
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- Koganezawa Masaaki
- Utsunomiya University Forests, Faculty of Agriculture, Utsunomiya University
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- Li Yuchun
- Laboratory of Wildlife Management, Faculty of Agriculture, Utsunomiya University Present address: Department of Biology, Hainan Normal University
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Abstract
Sixteen spotlight counts were conducted at night between June and August 1998 in an area with a high density of sika deer (Cervus nippon) in Nikko National Park, Japan. Behavioral responses to spotlights were analyzed, and distance sampling techniques (DST) were used to estimate deer den-sity. Deer behavior at the time of sighting and subsequent behavioral responses to spotlighting were recorded. Deer with perpendicular distance ≤ 5 m from the census route showed a flight ratio of 6.3% at the time of sighting, but deer > 5 m showed little flight response. Deer ≤ 5 m showed a relatively high flight response of 4.1-22.2% during census events, while deer further than 15 m exhibited a low flight response. Our results show that the spotlight count method meets the basic theoretical assumptions of the DST.
Journal
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- Mammal Study
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Mammal Study 27 (2), 95-99, 2002
THE MAMMAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390282679647421824
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- NII Article ID
- 10010815006
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- NII Book ID
- AA11185060
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- ISSN
- 13486160
- 13434152
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- NDL BIB ID
- 6396561
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed