2024-03-29T01:55:05Z
https://repository.dl.itc.u-tokyo.ac.jp/oai
oai:repository.dl.itc.u-tokyo.ac.jp:00000489
2022-12-19T03:41:26Z
27:28:37
9:10:11
Behavior of Gray-faced Buzzard Eagles and their Habitat Use in Yatsuenvironment
谷津環境におけるサシバの行動と生息条件
東, 淳樹
106758
武内, 和彦
106759
恒川, 篤史
106760
610
谷津環境
サシバ
生息分布
ラジオ・テレメトリ法
二次的自然
Yatsu-environment
Gray-faced Buzzard Eagle
distribution
radio-tracking
semi-natural environment
application/pdf
千葉県印譜沼流域鹿島川水系において,サシバの分布および生息環境について調べた・まず,サシバの繁殖期間中にあたる1997年4月下旬から6月初旬にかけて,生息分布を調査した・また,同年5月下旬から7月下旬にかけて,ラジオ・テレメトリ法により繁殖期間中の繁殖雄4羽の行動追跡を行なった・その結果,サシバは,谷津環境に生息し,生息分布は,谷津田の幅の広さと関連があった・サシバは斜面林を移動しながら採食し, 6月初旬までは谷津田を採食場所として利用したが,それ以降は林縁部,林冠部へと採食場所を移行させた.これらのことから,サシバは採食効率の面から谷津環境を営巣および採食場所として利用していると推察された.
We studied the distribution and habitat use of the Gray-faced Buzzard Eagle, Butastur indicus, along the Kashima river, watershed of lnba Marsh, Chiba Prefecture. Eagles were censused on maps from late in April to early in June, 1997. Four male eagles were radio-tracked from late May to late July inthe same year. The eagles occurred at Yatsu-environment, which is composed of Yatsuda (small paddy held) and forests on terrace scarp, and they preferred narrow Yatsuda. The eagles perched in trees on terrace scarp through the breeding season, and foraged in Yatsuda until early June. But, in June and August, the foraging site shifted from Yatsuda to forest edge and canopy. These results suggest that the eagles selected Yatsu-environment as nesting and foraging habitat to increase their foraging efficiency through seasons.
journal article
社団法人環境情報科学センター
1998
application/pdf
環境情報科学 = Environmental information science
12
239
244
AN00046279
03896633
https://repository.dl.itc.u-tokyo.ac.jp/record/489/files/kankyoron12_239.pdf
jpn