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Feeding Habits of Beaver in Newfoundland
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Feeding Habits of Beaver in Newfoundland

著者: Tom H Northcott
版本/格式: 文章 文章 : 英语
刊登在:Oikos, 1971, vol. 22, no. 3, p. 407-410
数据库:JSTOR
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文件类型: 文章
所有的著者/提供者: Tom H Northcott
ISSN:0030-1299
OCLC号码: 482045786
语言注释: English
注意: Fig. 1. The island of Newfoundland, Canada, showing the areas where beavers were studied.
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摘要:

The Newfoundland beaver Castor canadensis caecator has flourished in an area that lacks abundant supplies of those plant species normally considered to be preferred food. Aspects of the utilization of vegetation by beavers are described on the basis of field studies conducted during periods of 1961, 1962 and 1963 in three areas of the province. Where aspen Populus tremuloides occurs, always in small amounts, it is soon utilized completely. Alders Alnus rugosa and A. crispa are the most important plants, being the chief winter food and the major building material. Aquatic vegetation, particularly the water lilies Nuphar variegatum and N. microphyllum, is the major constituent of the summer diet.

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