On measuring microhabitat affinities with special reference to small mammals
On measuring microhabitat affinities with special reference to small mammals
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关于测量微栖息地亲和力，特别是小型哺乳动物
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
K. A. Kramer
中科院分区：
文献类型：
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作者：
M. V. Price;K. A. Kramer
两种不同的采样制度已被用来衡量动物群落的微生境利用模式。更常见的是采用一个完全随机安排的采样站的栖息地结构，和微栖息地的亲和力推断在一个站的动物密度和栖息地附近存在的功能之间的相关性。另一种方法是分层随机安排取样站。微生境类别的先验定义，预先确定的采样工作是花费在每个微生境，和亲和力推断在每个微生境中发生的相对频率。我们讨论了隐含在每种方法的假设和比较微生境的亲和力五个加州沿海鼠尾草灌丛啮齿动物物种的两种方法。虽然有一些定性的方法之间的协议，我们得出结论，分层随机制度有几个优势，比其他的微生境亲和力的研究。然而，对于其他类型的研究，完全随机的设计可能上级。
Two different sampling regimes have been used to measure microhabitat utilization patterns in animal communities. The more common one employs a completely random arrangement of sampling stations with respect to habitat structure, and microhabitat affinities are inferred from correlations between animal density at a station and habitat features present nearby. An alternative method employs a stratified random arrangement of sampling stations. Microhabitat categories are defined a priori, predetermined sampling effort is expended in each microhabitat, and affinities are inferred from relative frequency of occurrence in each microhabitat. We discuss assumptions implicit in each method and compare microhabitat affinities of five California coastal sage scrub rodent species obtained by the two methods. Although there is some qualitative agreement between methods, we conclude that the stratified random regime has several advantages over the other for studies of microhabitat affinity. For other sorts of study, however, a completely random design may be superior.