Institute of Botany, University of Liège, B-4000, Liège, Belgium.
Vital-IT, SIB Swiss Institute of Bioinformatics, CH-1015, Lausanne, Switzerland.
Nat Commun. 2020 Nov 5;11(1):5601. doi: 10.1038/s41467-020-19410-8.
The extent to which species can balance out the loss of suitable habitats due to climate warming by shifting their ranges is an area of controversy. Here, we assess whether highly efficient wind-dispersed organisms like bryophytes can keep-up with projected shifts in their areas of suitable climate. Using a hybrid statistical-mechanistic approach accounting for spatial and temporal variations in both climatic and wind conditions, we simulate future migrations across Europe for 40 bryophyte species until 2050. The median ratios between predicted range loss vs expansion by 2050 across species and climate change scenarios range from 1.6 to 3.3 when only shifts in climatic suitability were considered, but increase to 34.7-96.8 when species dispersal abilities are added to our models. This highlights the importance of accounting for dispersal restrictions when projecting future distribution ranges and suggests that even highly dispersive organisms like bryophytes are not equipped to fully track the rates of ongoing climate change in the course of the next decades.
物种通过迁移来弥补因气候变暖而导致的适宜栖息地丧失的程度是一个有争议的问题。在这里,我们评估了像苔藓植物这样高效的风传播生物是否能够跟上它们适宜气候区域的预计变化。我们使用一种混合的统计力学方法,考虑了气候和风力条件的时空变化,模拟了 40 种苔藓植物物种在 2050 年前在整个欧洲的未来迁移情况。仅考虑气候适宜性变化时,物种和气候变化情景预测的范围损失与扩张之间的中位数比例在 1.6 到 3.3 之间,但当我们的模型加入物种扩散能力时,这个比例增加到 34.7-96.8。这凸显了在预测未来分布范围时考虑扩散限制的重要性,并表明即使是像苔藓植物这样高度扩散的生物,也无法在未来几十年内完全跟上正在发生的气候变化的速度。