School of Life Sciences, Jinggangshan University, Ji'an, Jiangxi Province, 343009, People's Republic of China.
Key Laboratory for Biodiversity Science and Ecological Engineering, Ji'an, Jiangxi Province, 343009, People's Republic of China.
Sci Rep. 2018 Oct 30;8(1):16073. doi: 10.1038/s41598-018-34218-9.
Phenological and reproductive shifts of plants due to climate change may have important influences on population dynamics. Climate change may also affect invasive species by changing their phenology and reproduction, but few studies have explored this possibility. Here, we investigated the impact of climate change on the phenology, reproduction and invasion potential of two alien Solidago canadensis and Bidens frondosa and one native weed, Pterocypsela laciniata, all of which are in the Asteraceae family. The three species responded to simulated climate change by increasing reproductive investments and root/leaf ratio, prolonging flowering duration, and while the two alien species also displayed a mass-flowering pattern. Moreover, our experimental results indicated that the alien invasive species may have greater phenological plasticity in response to simulated warming than that of the native species (P. laciniata). As such, climate change may enhance the invasion and accelerate the invasive process of these alien plant species.
由于气候变化，植物的物候和繁殖期的转变可能对种群动态产生重要影响。气候变化也可能通过改变入侵物种的物候和繁殖来影响它们，但很少有研究探讨这种可能性。在这里，我们研究了气候变化对两种外来植物加拿大一枝黄花和鬼针草，以及一种本地杂草裂叶荆芥的物候、繁殖和入侵潜力的影响，它们都属于菊科。这三个物种通过增加繁殖投资和根/叶比、延长花期来应对模拟的气候变化，而两个外来物种也表现出了大量开花的模式。此外，我们的实验结果表明，与本地物种（裂叶荆芥）相比，外来入侵物种可能对模拟变暖具有更大的物候可塑性。因此，气候变化可能会增强这些外来植物物种的入侵性并加速其入侵过程。
