How reliable is the habitat suitability index as a predictor of great crested newt presence or absence?
How reliable is the habitat suitability index as a predictor of great crested newt presence or absence?
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DOI：
10.33256/31.2.111117
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发表时间：
2021-04-01
影响因子：
1
通讯作者：
Downs, Nick C.
中科院分区：
文献类型：
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作者：
Buxton, Andrew S.;Tracey, Hannah;Downs, Nick C.
应用生境适宜性指数（HSI）评估来预测大冠蝾螈（Triturus cristatus）对池塘的使用，通常与分布和监测项目相关联。这类项目经常被用来为发展和规划决策提供信息。然而，这种类型的评估经常被滥用和误解。我们使用了一个大的，商业收集的环境DNA（eDNA）调查大凤头蝾螈池塘占用（489池塘）;（1）评估是否适合使用低HSI分数，以排除占用，（2）讨论使用高HSI分数，以确定池塘的高度重要性的物种，（3）探索eDNA检测方法。我们的结论是，没有证据支持排除池塘占用低HSI分数的基础上。然而，传统的观点认为，HSI分数高于0.7的池塘对大冠蝾螈非常重要，这在一定程度上得到了数据的支持。eDNA和直接观测调查方法都存在抽样误差，在分析大型数据集时需要承认这一点。
The application of a habitat suitability index (HSI) assessment to predict the use of ponds by great crested newts (Triturus cristatus) is commonly used in association with distribution and monitoring projects. Such projects are often used to inform development and planning decision making. However, this type of assessment is frequently misused, and misinterpreted. We used a large, commercially collected environmental DNA (eDNA) survey for great crested newt pond occupancy (489 ponds) to; (1) assess whether it is appropriate to use low HSI scores to rule out occupancy, (2) discuss the use of high HSI scores to identify ponds of high importance for the species and, (3) explore the eDNA detection method. We conclude that there is no evidence to support ruling out pond occupancy based on low HSI scores. However, the conventional view that ponds with HSI scores above 0.7 are of high importance to great crested newts is somewhat supported by the data. Both eDNA and direct observational survey methodologies suffer from sampling error and these need to be acknowledged in the analysis of large data sets.