Elucidation of environmental factors related to meta population structure and its persistence of pikas

• Project/Area Number: 25450226
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Forest science
• Research Institution: Forest Research and Management Organization
• Principal Investigator: Ohnishi Naoki 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 (00353615)
• Research Collaborator: KINOSHITA Gohta
• Project Period (FY): 2013-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: ナキウサギ / 個体群 / 景観 / メタ個体群 / 小型哺乳類

Outline of Final Research Achievements

Pika likes rock mass sediments distributed in patches, so it has a distribution with meta-population structure. I surveyed censuses for 5 years and investigated the fluctuation of each patch in Oketo town in Hokkaido. Of the 16 patches that were the subject of survey, the inhabitation was confirmed only in 5 patches in 2013, but in 2015, the inhabitation was confirmed in all 16 patches. Since the number of habitat patches was 14 in 2016 and 2017, it seems that there were fluctuations in the number of individuals with the smallest number in 2013 and the largest number in 2015.
I could not trace movements of pikas because no individual had been captured during the five years.