Evaluation of sardine bait stations to monitor Asiatic black bear populations in Nagano Prefecture, central Japan
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- Huygens Oscar C.
- Department of Biology, Faculty of Science, Shinshu University
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- Goto Mitsuaki
- Department of Agriculture, Shinshu University
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- Hoshino Toshio
- Shinshu Tsuki no Waguma Kenkyu Kai, Department of Environmental Sciences, Faculty of Science, Shinshu University
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- Koyama Masaru
- Picchio, Hoshino Resort, Karuizawa
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- Hayashi Hidetake
- Department of Environmental Science, Faculty of Science, Shinshu University
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- Yoshida Toshio
- Department of Agriculture, Shinshu University
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Abstract
Regular monitoring of bear (Ursus spp.) populations is important to ensure that conservation policies are appropriate. Although population estimates may be less ambiguous than population trend estimates, they are more difficult and expensive to obtain. Bait station surveys are commonly used in North America to monitor bear population trends. We tested sardine bait stations as a monitoring tool for Asiatic black bear (U. thibetanus) populations in Nagano Prefecture, central Japan, in summer and fall 1999 and in spring 2000. We established 341 sardine bait stations in five study areas. Eighteen (X = 5.45%; range = 0-10.8%) bait stations were visited by bears and 21 (X = 6.36%; range = 0-17.8%) were visited by non-target animals, and 11 were discarded due to data collection concerns. In the only area we tested during three seasons (Northern Japanese Alps), we obtained the highest (8.3%) visitation rates in summer, the lowest (4.5%) in spring, and intermediate rates (5.6%) in fall. These visitation rates are too low to be a reliable indicator of bear abundance.
Journal
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- Biosphere conservation : for nature, wildlife, and humans
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Biosphere conservation : for nature, wildlife, and humans 4 (1), 37-41, 2001
Association of Wildlife and Human Society
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Details 詳細情報について
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- CRID
- 1390001206093184000
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- NII Article ID
- 110001817333
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- NII Book ID
- AA11499342
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- ISSN
- 24331260
- 13446797
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- Text Lang
- en
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed