Amphibians at risk: Effects of climate change in the southwestern North American drylands
Amphibians at risk: Effects of climate change in the southwestern North American drylands
复制标题
DOI：
10.1016/j.gecco.2024.e02944
复制
发表时间：
2024-06-01
影响因子：
4
通讯作者：
Johnson，Jared
中科院分区：
文献类型：
--
作者：
de Albuquerque，Fabio Suzart;Bateman，Heather L.;Johnson，Jared
气候变化会以多种方式影响物种的地理范围，导致物种的地理范围扩大和缩小。两栖动物是最受威胁的脊椎动物类别，恶化的部分原因是失去了合适的栖息地。这一分类群特别敏感，因为它们的双相生活周期(水生和陆地)和微生境要求。在这里，我们提出了一种结合的方法，利用生物和生活史信息来了解物种对气候变化的敏感性。我们研究的目标是(1)确定环境变量对美国西南部和墨西哥旱地两栖动物广泛分布的贡献，(2)描述两栖动物的栖息地适宜性如何潜在地对旱地的一系列气候变化情景做出反应，以及(3)确定与旱地地区预期的气候变化特定压力和机制的脆弱性增加和适应有关的两栖动物特征。结果表明，气候强烈影响旱地两栖动物多样性的地理分布，预计大多数两栖动物在未来几十年将失去栖息地。这项研究还表明，丧失高栖息地适宜性最大的地区与气温上升和降水减少有关。我们的成果建立了一个框架，将显著改善旱地生物地理知识的现状，同时为决策者提供全面的信息和分析，以养护和保护濒危和受威胁的两栖物种及其栖息地。
Climate change can affect species' geographical range in several ways, leading to species' geographical range expansion and contraction. Amphibians are the most threatened vertebrate class, and deterioration is due, in part, to the loss of suitable habitat. This taxonomic group is especially sensitive because of their biphasic life cycles (aquatic and terrestrial) and microhabitat requirements. Herein, we propose a combined approach, which uses biological and life history information to understand species' sensitivity to climate change. The goals of our study were to (1) identify the contribution of environmental variables to the broad-scale distribution of amphibians in drylands of the southwestern United States and Mexico, (2) describe how the habitat suitability of amphibians can potentially respond to a range of climate change scenarios across drylands, and (3) identify amphibian traits related to increased vulnerability and adaptation to the specific pressures and mechanisms of climate change projected for the dryland areas. Results show that climate strongly influences the geographic distribution of amphibian diversity in drylands and that most amphibians are expected to lose habitat in the upcoming decades. This study also shows that areas with the greatest loss of high habitat suitability are related to temperature increases and precipitation reductions. Our results build a framework that will significantly improve the current state of knowledge on the drylands' biogeography while providing comprehensive information and analyses for decision-makers to conserve and protect endangered and threatened amphibian species and their habitats.