| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2010-08-20 |
| タイトル |
|
|
タイトル |
Temporal changes in the population density and diet of brown bears in eastern Hokkaido, Japan |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Cervus nippon yesoensis |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
crop damage |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
food habit |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
scat density |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Ursus arctos yesoensis |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 著者 |
Sato, Yoshikazu
Aoi, Toshiki
Kaji, Koichi
Takatsuki, Seiki
|
| 著者(機関) |
|
|
値 |
Laboratory of Biological Diversity Sciences, The University of Tokyo |
| 著者(機関) |
|
|
値 |
Department of Environmental Sciences, Faculty of Agriculture, Iwate University |
| 著者(機関) |
|
|
値 |
Nature Conservation Division, Hokkaido Institute of Environmental Sciences |
| 著者(機関) |
|
|
値 |
University Museum, The University of Tokyo |
| 登録日 |
|
|
日付 |
2010-08-20 |
| 書誌情報 |
Mammal Study
巻 29,
号 1,
p. 47-53,
発行日 2004-01-01
|
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1343-4152 |
| Abstract |
|
|
内容記述タイプ |
Other |
|
内容記述 |
In eastern Hokkaido, Japan, occurrences of human-brown bear (Ursus arctos yesoensis) conflict have increased during the last decade. Locals speculate that these conflicts have been caused by an increase in the bear population and/or changes in bear ecology, although no evidence is available to support either hypothesis. We compared scat densities and the diets of bears for the years 1978 and 1998–2000 in Urahoro, eastern Hokkaido. The scat density in 2000 tended to be lower than in 1978, suggesting that bear density has not increased over the last two decades. In 1978, herbaceous plants were the dominant early and late summer foods of bears. Berries, including Rubus spp. and Actinidia kolomicta, were dominant late summer foods. In contrast, sika deer (Cervus nippon yesoensis) meat appeared frequently in bear scats in all seasons in 1998–2000, at a much higher percentage than in 1978. Crops, including sugar beet and corn, also increased in early and late summer. These results suggest that the diet of bears has changed over the last two decades, and that bears have become more dependent on deer and on crops. We conclude that the increase in human-bear conflicts is not because of an increase in the bear population, but because of the increased dependence of bears on deer and crops as food sources. |
| 出版者 |
|
|
出版者 |
The Mammalogical Society of Japan |
| 権利 |
|
|
権利情報 |
Copyright (c) 2004 The Mammalogical Society of Japan |
| DOI |
|
|
関連タイプ |
isIdenticalTo |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.3106/mammalstudy.29.47 |
| 著者版フラグ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
ms-v29n1p47-53.pdf (443.0 kB)
