2012 Fiscal Year Final Research Report
Effect of overabundant of sika deer on the Asiatic black bear
| Project/Area Number |
22780141
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Forest science
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
KOIKE Shinsuke 東京農工大学, 大学院・農学研究院, 講師 (40514865)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 大型哺乳類 / ツキノワグマ / 生態系改変 / ニホンジカ |
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| Research Abstract |
I compared the food habits of Asiatic black bears (Ursus thibetanus) from before (-1990) and after (2001-) 2000 using both fecal contents and carbon and nitrogen stable isotope ratios in bear hairs. The bear population’s diet changed over 2 decades. Habitat conditions may have changed, causing bears to adjust their food habits. We discuss some factors, such as vegetation changes caused by overabundant deer or bears eating deer carcasses, that may be partly responsible.
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