2 0 0 0 OA 皇居の鳥類相モニタリング調査(2000-2005年)
The avifauna of the Imperial Palace Area in Tokyo was monitored by bird censuses nearly in every two months from August 2000 to November 2005. The results were compared with the previous monthly bird census research from April 1996 to March 2000 reported by Nishiumi et al. (2000). The total number of species recorded in the 35 censuses since August 2000 was 64 species, which is composed of 20 residents, 17 winter visitors, 10 transients, and 17 irregular visitors as listed in Appendix 1, but no breeding summer visitors were recoded. In total of these 10 years, 78 species were recorded by censuses. Eleven species among them are newly recorded in this monitoring period since August 2000; Larus argentatus, Sterna sp., Cuculus poliocephalus, Anthus hodgsoni, Anthus spinoletta, Saxicola torquata, Cyanoptila cyanomelana, Terpsiphone atrocaudata, Parus montanus, Sitta europaea, Fringilla montifringilla. Apart from censuses additional 4 species were recorded; Ninox scutulata as a breeding summer visitor and Corvus corone, Fulica atra, Podiceps cristatus as irregular visitors. We found a significant decreasing trend in number of species observed in the bird census during these ten years. The number of individuals was also significantly decreased except for January and individual number of residents was conspicuously decreased, although that of winter visitors was stable or somewhat increased. Moreover, the species diversity showed significantly a decreasing trend in all of odd months.
1 0 0 0 OA 赤坂御用地におけるカワセミの繁殖
- 著者
- 紀宮 清子 鹿野谷 幸栄 佐藤 佳子 安藤 達彦 柿澤 亮三
- 出版者
- Yamashina Institute for Ornitology
- 雑誌
- 山階鳥類研究所研究報告 (ISSN:00440183)
- 巻号頁・発行日
- vol.23, no.1, pp.1-5, 1991 (Released:2008-12-25)
- 参考文献数
- 5
- 被引用文献数
- 1 1
While it is probable that Common kingfishers Alcedo atthis used to be found in central Tokyo, they have for long been found only in the outskirts of the city. However, recently they have appeared in many locations near the center of the city. We observed their breeding at the Akasaka Imperial Grounds in the center of Tokyo. In the first brood, four young were observed to fledge on May 20, and in the second, five young fledglings were confirmed on July 14 and 15. Some aspects of breeding behaviour of the parents are described.
1 0 0 0 赤坂御用地におけるカワセミの繁殖
- 著者
- 紀宮清子
- 出版者
- 山階鳥類研究所
- 雑誌
- 山階鳥類研究所研究報告 (ISSN:00440183)
- 巻号頁・発行日
- vol.23, no.1, pp.p1-5, 1991-03
- 著者
- 紀宮 清子 鹿野谷 幸栄 安藤 達彦
- 出版者
- 山階鳥類研究所
- 雑誌
- 山階鳥類研究所研究報告 (ISSN:00440183)
- 巻号頁・発行日
- vol.34, no.1, pp.112-125, 2002-10
