山階鳥類学雑誌
Online ISSN : 1882-0999
Print ISSN : 1348-5032
ISSN-L : 1348-5032
原著論文
標識データに見られるスズメの減少
三上 修森本 元
著者情報
ジャーナル フリー

2011 年 43 巻 1 号 p. 23-31

詳細
抄録

A previous study has demonstrated that the population size of the Tree sparrow Passer montanus in Japan is declining. To confirm this, we examined reports on the number of tree sparrows banded in Japan from 1987 to 2008. If the population size of the tree sparrow is actually diminishing, then the numbers banded should also reflect this. Results showed that the number of tree sparrows banded over this period decreased by more than half, and support previous studies documenting the decline of the tree sparrow in Japan.

著者関連情報
© 2011 公益財団法人 山階鳥類研究所
前の記事 次の記事
feedback
Top