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Distribution of the Eastern Short-Horned Lizard (Phrynosoma douglassii brevirostre) in Alberta, Canada
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Distribution of the Eastern Short-Horned Lizard (Phrynosoma douglassii brevirostre) in Alberta, Canada

著者: G Lawrence Powell; Anthony P Russell
版本/格式: 文章 文章 : 英语
刊登在:Northwestern Naturalist, Spring, 1991, vol. 72, no. 1, p. 21-26
数据库:JSTOR
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文件类型: 文章
所有的著者/提供者: G Lawrence Powell; Anthony P Russell
ISSN:1051-1733
OCLC号码: 484954686
语言注释: English
注意: FIGURE 1. The distribution of Phrynosoma douglassii brevirostre in southeastern Alberta (hatched area of inset map). Numbered locations refer to those listed in Table 1. Contours in meters.
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摘要:

The eastern short-horned lizard, Phrynosoma douglassii brevirostre, reaches the northern limit of its geographical range in southeastern Alberta. Populations in this area are found in the drainage basins of the South Saskatchewan River, Pakowki Lake and Milk River. The vegetation of the area is typical short-grass prairie. Populations are confined to south-facing slopes, badland-grassland ecotones and Bearpaw shale outcrops. The range is within the dry steppe climatic region, having short, hot summers and high insolation. The active season of the lizards is from late April-early May until early September. Geologic and vegetative factors appear to account for the presence of P. d. brevirostre at high latitudes.

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