Research School of Biology, The Australian National University, Acton, ACT, Australia.
Centre for Biodiversity Analysis, Acton, ACT, Australia.
Mol Ecol. 2018 Jan;27(2):520-532. doi: 10.1111/mec.14441. Epub 2017 Dec 21.
Spatial responses of species to past climate change depend on both intrinsic traits (climatic niche breadth, dispersal rates) and the scale of climatic fluctuations across the landscape. New capabilities in generating and analysing population genomic data, along with spatial modelling, have unleashed our capacity to infer how past climate changes have shaped populations, and by extension, complex communities. Combining these approaches, we uncover lineage diversity across four codistributed lizards from the Australian Monsoonal Tropics and explore how varying climatic tolerances interact with regional climate history to generate common vs. disparate responses to late Pleistocene change. We find more divergent spatial structuring and temporal demographic responses in the drier Kimberley region compared to the more mesic and consistently suitable Top End. We hypothesize that, in general, the effects of species' traits on sensitivity to climate fluctuation will be more evident in climatically marginal regions. If true, this points to the need in climatically marginal areas to craft more species-(or trait)-specific strategies for persistence under future climate change.
物种对过去气候变化的空间响应既取决于内在特征（气候生态位宽度、扩散率），也取决于景观范围内气候波动的规模。生成和分析种群基因组数据的新能力，以及空间建模，已经释放了我们推断过去气候变化如何塑造种群的能力，进而推断复杂群落的形成。通过结合这些方法，我们揭示了来自澳大利亚季风热带地区的四种共分布蜥蜴的谱系多样性，并探讨了不同的气候容忍度如何与区域气候历史相互作用，从而对更新世晚期的变化产生共同或不同的反应。与更湿润且始终适宜的北部地区相比，我们在更干燥的金伯利地区发现了更具分歧的空间结构和时间上的人口动态响应。我们假设，一般来说，物种特征对气候波动敏感性的影响在气候边缘地区将更为明显。如果这是真的，这就意味着在气候边缘地区，需要制定更具针对性的物种（或特征）策略，以在未来的气候变化下得以生存。
