Historicity as a factor of determining locations of heronries and winter roosts of Ardeidae species
Project/Area Number |
19570014
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Ecology/Environment
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Research Institution | University of Tsukuba |
Principal Investigator |
TOQUENAGA Yukihiko University of Tsukuba, 大学院・生命環境科学研究科, 准教授 (90237074)
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Project Period (FY) |
2007 – 2009
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Project Status |
Completed (Fiscal Year 2009)
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Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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Keywords | local enhancement / 地理情報システム / 採餌環境 / 営巣環境 / 地理上方システ |
Research Abstract |
Aerial and ground census revealed population dynamics of heronries that consist of six Ardeidae species. There was no significant changes in species compositions and endangered Egretta intermedia dominated in the study area.The number of small colonies often occupied only by Ardea cineria had increased recent years. Competition for common resources generated intra-specific but inter-colonial variation in food preferences among Ardeidae species. Relatively small human perturbations by cutting trees of heronries rather than large perturbations, such as the TX development, affected continuity of heronries, and they tended to be reconstructed next year when there were relatively large winter roosts nearby the location.
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Report
(4 results)
Research Products
(23 results)
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[Presentation] 勝ち抜き型の共倒れ2009
Author(s)
真野浩行・徳永幸彦・石田健太郎
Organizer
ポスター発表
Place of Presentation
日本動物行動学会 (つくば)
Year and Date
2009-11-28
Related Report
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