Climate change reshuffles northern species within their niches
Climate change reshuffles northern species within their niches
复制标题
DOI：
10.1038/s41558-022-01381-x
复制
发表时间：
2022-06-02
影响因子：
30.7
通讯作者：
Laine, Anna-Liisa
中科院分区：
文献类型：
--
作者：
Antao, Laura H.;Weigel, Benjamin;Laine, Anna-Liisa
气候变化是对生物多样性的普遍威胁。虽然范围的变化是气候变暖导致区域群落变化的一个已知后果，但对物种在其气候生态位内的位置如何变化知之甚少。此外，促使这种变化的不同气候变量的相对重要性是否随着气候变化而变化，目前尚不清楚。在这里，我们分析了沿着1 200公里高纬度梯度的1 478种鸟类、哺乳动物、蝴蝶、飞蛾、植物和浮游植物40年的数据。气候驱动因素的相对重要性随着气候变化的进展而变化。虽然几十年来物种更替有限，但物种在其气候生态位内的相对位置发生了重大变化。在气候变化较强的高纬度地区，有较大比例的物种对气候变化作出反应。这些不同的气候印记重构了一个完整的生物群系，使得生物多样性响应难以概括，并引发了人们对面临加速气候变化的生态系统完整性的担忧。作者分析了40年来各种分类群的分布数据，以了解物种在其气候生态位内的变化以及不同气候因素的变化影响。气候印记的多样性和差异性引起了人们对未来生态系统完整性的担忧。
Climate change is a pervasive threat to biodiversity. While range shifts are a known consequence of climate warming contributing to regional community change, less is known about how species' positions shift within their climatic niches. Furthermore, whether the relative importance of different climatic variables prompting such shifts varies with changing climate remains unclear. Here we analysed four decades of data for 1,478 species of birds, mammals, butterflies, moths, plants and phytoplankton along a 1,200 km high latitudinal gradient. The relative importance of climatic drivers varied non-uniformly with progressing climate change. While species turnover among decades was limited, the relative position of species within their climatic niche shifted substantially. A greater proportion of species responded to climatic change at higher latitudes, where changes were stronger. These diverging climate imprints restructure a full biome, making it difficult to generalize biodiversity responses and raising concerns about ecosystem integrity in the face of accelerating climate change.The authors analyse four decades of distribution data for various taxonomic groups to understand the shift of species within their climatic niches and the changing influences of different climate factors. The diverse and diverging climate imprints raise concerns about future ecosystem integrity.