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首页> 外文期刊>Canadian Journal of Zoology >Characteristics of current and historical kit fox (Vulpes macrotis) dens in the Great Basin Desert
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Characteristics of current and historical kit fox (Vulpes macrotis) dens in the Great Basin Desert

机译：大盆地沙漠中当前和历史上的袋狐（Vulpes macrotis）窝的特征

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We examined the ecological and physical characteristics of den sites for 13 adult kit fox (Vulpes macrotis) in western Utah from December 1998 to February 2001. We also compared current and historical den distribution among habitat types. The number of den sites used was not influenced by home-range size (P = 0.11) or season (P = 0.40), but was influenced by geographical area. Home-range size was smallest (P = 0.007) and the number of dens used was greatest (P = 0.009) in mountainous areas. Ecological and physical characteristics of single-use dens (n = 30) were compared with those of multiple-use (n = 53) and natal dens (n = 8). Characteristics that differed between den types included number of entrances (P = 0.0001), diameter of entrances (P = 0.003), and height of vegetation along transects (P = 0.0001). Natal den entrance azimuths were weighted towards a northwesterly aspect (P = 0.0022); however, single- and multiple-use den exits appeared to be randomly distributed. Historical changes in kit fox den site selection have occurred since 1959 (P < 0.0001). We characterized more dens in invasive grasslands and fewer in greasewood (Sarcobatus vermiculatus) habitats than previously described. The conversion of native habitat to grassland and the increase in coyote population may have altered kit fox distribution to include mountainous areas not previously described.
机译：我们研究了1998年12月至2001年2月在犹他州西部的13只成年野狐（Vulpes macrotis）的巢穴的生态和物理特征。我们还比较了栖息地类型之间当前和历史的巢穴分布。使用的窝点数量不受家庭范围大小（P = 0.11）或季节（P = 0.40）的影响，但受地理区域的影响。在山区，家庭范围的大小最小（P = 0.007），使用的窝点数量最大（P = 0.009）。比较了单次使用的窝点（n = 30），多用途（n = 53）和出生的窝点（n = 8）的生态和物理特征。窝点类型之间的特征不同，包括入口数量（P = 0.0001），入口直径（P = 0.003）和沿样带的植被高度（P = 0.0001）。纳塔尔洞穴入口方位角朝西北方向加权（P = 0.0022）;但是，单次使用和多次使用的出口都似乎是随机分布的。自1959年以来，试剂盒狐狸饲养场所的选择发生了历史性变化（P <0.0001）。与以前描述的相比，我们在侵入性草地上的窝点数量更多，而在油木（Sarcobatus vermiculatus）生境中的窝点数量更少。原始栖息地向草原的转化以及土狼种群的增加可能已经改变了狐狸狐狸的分布，从而包括了先前未描述的山区。

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