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Heterogeneous responses of temperate-zone amphibian populations to climate change complicates conservation planning

机译:温带两栖动物对气候变化的异质反应使保护规划复杂化

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摘要

The pervasive and unabated nature of global amphibian declines suggests common demographic responses to a given driver, and quantification of major drivers and responses could inform broad-scale conservation actions. We explored the influence of climate on demographic parameters (i.e., changes in the probabilities of survival and recruitment) using 31 datasets from temperate zone amphibian populations (North America and Europe) with more than a decade of observations each. There was evidence for an influence of climate on population demographic rates, but the direction and magnitude of responses to climate drivers was highly variable among taxa and among populations within taxa. These results reveal that climate drivers interact with variation in life-history traits and population-specific attributes resulting in a diversity of responses. This heterogeneity complicates the identification of conservation ‘rules of thumb’ for these taxa, and supports the notion of local focus as the most effective approach to overcome global-scale conservation challenges.
机译:全球两栖动物数量减少的普遍性和持续性表明对特定驱动因素的共同人口响应,而对主要驱动因素和响应的量化可能会为大规模的保护行动提供依据。我们使用来自温带两栖动物种群(北美和欧洲)的31个数据集探索了气候对人口参数的影响(即生存和补充概率的变化),每个数据集都有十多年的观测数据。有证据表明气候对人口人口统计率有影响,但是对气候驱动因素的响应的方向和幅度在分类单元之间和分类单元内的人群之间变化很大。这些结果表明,气候驱动因素与生活史特征和特定于人口的属性的变化相互作用,从而导致对策的多样性。这种异质性使这些分类单元的保护“经验法则”的识别变得复杂,并且支持将重点放在本地这一概念是克服全球规模的保护挑战的最有效方法。

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