Threshold detection: matching statistical methodology to ecological questions and conservation planning objectives

Avian Conservation and Ecology

Marc-Andr¹  Judith D. Toms,² 

[1] D;Eco-Logic Consulting

关键词: breakpoint-based threshold;    classification;    regression tree;    classification threshold;    ecological thresholds;    logistic regression;    occupancy threshold;    piecewise regression;    ROC analysis;   

DOI  :  10.5751/ACE-00715-100102

学科分类：社会科学、人文和艺术（综合）

来源: Resilience Alliance Publications

【 摘 要 】

Two types of ecological thresholds are now being widely used to develop conservation targets: breakpoint-based thresholds represent tipping points where system properties change dramatically, whereas classification thresholds identify groups of data points with contrasting properties. Both breakpoint-based and classification thresholds are useful tools in evidence-based conservation. However, it is critical that the type of threshold to be estimated corresponds with the question of interest and that appropriate statistical procedures are used to determine its location. On the basis of their statistical properties, we recommend using piecewise regression methods to identify breakpoint-based thresholds and discriminant analysis or classification and regression trees to identify classification thresholds.

【 授权许可】

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