| Project/Area Number |
09680497
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | HOKKAIDO UNIVERSITY |
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Principal Investigator |
WATANUKI Yutaka Fac.Agric., Hokkaido Univ., Asoc.Prof., 農学部, 助教授 (40192819)
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| Co-Investigator(Kenkyū-buntansha) |
NAITO Yasuhiko Natl.Inst.Polar Res., Prof., 教授 (80017087)
HIGUCHI Hiroyoshi Grad.Sch.Agric.Life Sci., Univ.Tokyo, Prof., 大学院・農学生命科学研究科, 教授 (10111486)
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| Project Period (FY) |
1997 – 1998
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| Project Status |
Completed (Fiscal Year 1998)
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| Budget Amount *help |
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1998: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1997: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | marine environment / monitoring / seabirds / Foraging / biotelemetry |
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| Research Abstract |
Marine top predators will be efficient tools to monitor variability of marine environment at fine scale. To make them observational platforms and evaluate its feasibility, we measured ambient temperature, diving behavior and foraging location of auks and cormorants by biotelemetry techniques. A review study of dive duration in auks and penguins, researches on at sea foraging behavior of Japanese cormorants and Brunnich's Guillemots, and a 5 year work on diet and breeding success of Rhinoceros Aukiets suggest that ; 1) physiological constraints should be considered, 2) measurement of individual variation in foraging behavior is recommended, 3) conventional long term works on breeding biology are sometimes very useful, 4) simultaneous measurements of foraging behavior and physical environments could tell us fine scale response of predator.
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