Signal detection theory clarifies the concept of perceptual range and its relevance to landscape connectivity
Signal detection theory clarifies the concept of perceptual range and its relevance to landscape connectivity
复制标题
信号检测理论阐明了感知范围的概念及其与景观连通性的相关性
DOI：
10.1007/s10980-012-9812-6
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发表时间：
2012
影响因子：
5.2
通讯作者：
W. L. Helmey
中科院分区：
文献类型：
--
作者：
R. Fletcher;C. W. Maxwell;John E. Andrews;W. L. Helmey
了解功能连通性对生态学和保护中的几个问题至关重要。当动物在景观中积极寻找栖息地时，它们对栖息地的感知范围会深刻影响连通性。尽管如此，知觉范围的概念发展和估计及其对连通性的影响是有限的。信号检测理论（SDT）在多个学科中有着悠久的传统，以解决在嘈杂和不确定环境中检测刺激的问题。SDT对于理解感知范围特别有用，因为它承认检测过程中的不确定性，并区分了以前在解释动物感知范围时混淆的两个关键参数：信号可探测性和个体的反应偏差。在这里，我们将SDT扩展到感知范围的概念，提供了估计斑块可探测性和响应偏差的方法，并将该框架应用于解释仙人掌昆虫（Chelinidea vittiger）的感知范围。我们发现，基于估计信号检测参数的广义线性模型，C. vittiger对栖息地的信号可探测性及其感知范围在1 ~ 2 m之间。SDT提供了关于感知范围和功能连接的新见解，这可能有助于理解动物对改变景观的反应的种内和种间变化。
Understanding functional connectivity is critical for several issues in ecology and conservation. When animals actively search for habitat across landscapes, their perceptual range of habitats can profoundly influence connectivity. Nonetheless, conceptual development and estimation of perceptual ranges and their influence on connectivity have been limited. Signal detection theory (SDT) has a long tradition in several disciplines to address the problem of detecting stimuli in noisy and uncertain environments. SDT is particularly useful for understanding perceptual ranges because it acknowledges uncertainty in the detection process and distinguishes between two key parameters that have previously been confounded when interpreting the perceptual range of animals: signal detectability and response bias of individuals. Here we extend SDT to the concept of perceptual range, provide approaches for estimating patch detectability and response bias, and apply this framework to interpreting the perceptual range of cactus bugs (Chelinidea vittiger). We find that signal detectability of habitat by C. vittiger, and thus their perceptual range, is between 1 and 2 m, based on generalized linear models aimed at estimating signal detection parameters. SDT provides new insights into perceptual ranges and functional connectivity, which may help understand intra and interspecific variation in animal responses to modified landscapes.