Geffen Eli, Hefner Reuven, Macdonald David W, Ucko Michal
Wildlife Conservation Research Unit, Dept. of Zoology, South Parks Road, OX1 3PS, Oxford, UK.
Nature Reserves Authority, P.O. Box, 667, Eilat, Israel.
Oecologia. 1992 Aug;91(1):75-81. doi: 10.1007/BF00317244.
This paper presents analyses of habitat-use and home range size in the Blanford's fox. We predicted, from the resource dispersion hypothesis (RDH), that home ranges would encompass similar areas of combined fruitful habitats, but widely different areas of useless habitats, and thus that home ranges would be larger where such fruitful patches are fragmented and widely dispersed. Home range estimates of 0.5-2.0 km were calculated for 16 adult Blanford's foxes, using three different methods. There were no significant differences in home range size between sexes or study sites. One habitat, dry creekbed, was the most frequently visited in all home ranges. Dry creekbed provided abundant prey for the foxes and only sparse cover for their predators. Both the available area of creekbed in each range, and the area of creekbed patches that was used by the foxes, were independent of home range size. However, the variance in home range size was explained by the mean distance between the main denning area and the most frequently used patches of creekbed. These results are in accord with some predictions of the resource dispersion hypothesis.
本文介绍了对阿富汗狐栖息地利用和家域大小的分析。根据资源分散假说（RDH），我们预测，家域将涵盖相似面积的组合丰富栖息地，但无用栖息地的面积差异很大，因此，在这些丰富斑块破碎且广泛分散的地方，家域会更大。使用三种不同方法，计算了16只成年阿富汗狐的家域估计值为0.5 - 2.0平方千米。两性之间或研究地点之间的家域大小没有显著差异。一种栖息地，干涸的河床，是所有家域中最常被访问的地方。干涸的河床为狐狸提供了丰富的猎物，而对它们的捕食者来说只有稀疏的掩护。每个家域中河床的可用面积以及狐狸使用的河床斑块面积，均与家域大小无关。然而，家域大小的方差由主要巢穴区域与最常使用的河床斑块之间的平均距离来解释。这些结果与资源分散假说的一些预测一致。
