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Identifying habitat variables important to the rare Columbia spotted frog in utah (USA): An information-theoretic approach

机译:确定对犹他州(美国)的哥伦比亚稀有蛙类重要的栖息地变量:一种信息理论方法

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We identified habitat associations of the rare Columbia spotted frog ( Rana luteiventris). We used an information-theoretic approach that encouraged careful consideration of previous studies, demanded a priori formulation of hypotheses and models, and provided interpretable results while avoiding some criticisms of traditional statistical analyses. We formulated hypotheses about habitat associations based on conductivity, emergent vegetation, littoral zone depth, pond hydrology, and water temperature. We modeled hypothesized associations with logistic regression and used Akaike's information criterion to quantify evidence for models, weigh the relative importance of each habitat variable, and select predictive models. Although variable, results suggested that spotted frogs are more likely to occur in ponds that do not shrink in size seasonally, maintain relatively constant seasonal water temperature, and have high emergent vegetation cover. Associations we identified will assist actions in Utah that may be critical to local persistence of spotted frogs. Moreover, this approach for identifying associations has great potential for other rare species.
机译:我们确定了稀有的哥伦比亚斑点青蛙(Rana luteiventris)的栖息地协会。我们使用了一种信息理论方法,该方法鼓励对以前的研究进行仔细考虑,要求对假设和模型进行先验表述,并提供可解释的结果,同时避免对传统的统计分析提出批评。我们根据电导率,新出现的植被,沿海地带深度,池塘水文学和水温来提出关于栖息地关联的假设。我们使用逻辑回归对假设的关联进行建模,并使用Akaike的信息准则对模型的证据进行量化,权衡每个栖息地变量的相对重要性,并选择预测模型。尽管变化无常,但结果表明,斑点蛙更可能出现在没有季节性缩小,季节性水温保持相对恒定并具有高植被覆盖度的池塘中。我们确定的协会将协助在犹他州采取的行动,这些行动可能对斑蛙的本地生存至关重要。此外,这种用于识别关联的方法对于其他稀有物种具有巨大的潜力。

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