Mantoani Maurício Cruz, Osborne Bruce Arthur
UCD School of Biology and Environmental Science, and UCD Earth Institute, University College Dublin (UCD), Belfield, Dublin 4, D04 V1W8 Dublin, Ireland.
Institute of Astronomy, Geophysics and Atmospheric Science (IAG), University of São Paulo (USP), São Paulo 05508-090, Brazil.
Plants (Basel). 2022 Apr 30;11(9):1224. doi: 10.3390/plants11091224.
The interventions that are required for both the control and post-invasion restoration of native plant communities depends on several factors, including the efficacy of the measures that are used and how these interact with environmental factors. Here, we report on the results of an experiment on the effects of mechanical removal and herbicide application on the invasive plant and how an extreme weather event impacted on the invader and on the recovery of native coastal grassland communities. Both removal protocols were largely effective in eradicating mature plants, but the mechanical removal treatment resulted in a major increase in the number of seedlings, which was exacerbated by the extreme event. Nine months after removal, the number of native species had recovered to 80% of that in uninvaded grasslands. In contrast to seedlings, mature plants of showed a significant reduction in above-ground production after the extreme weather event, although these had largely recovered after six months. Overall, our results indicate that post-control restoration of the plant community may be possible without further significant management interventions. Nevertheless, since some invasive plants survived, further monitoring is required to ensure that recolonisation does not occur.
对本地植物群落进行控制以及入侵后恢复所需的干预措施取决于几个因素，包括所采用措施的效果以及这些措施与环境因素如何相互作用。在此，我们报告一项关于机械清除和施用除草剂对入侵植物的影响以及极端天气事件如何影响入侵者和本地沿海草原群落恢复的实验结果。两种清除方案在根除成熟植株方面大体有效，但机械清除处理导致幼苗数量大幅增加，极端事件使这种情况更加恶化。清除九个月后，本地物种数量已恢复到未受入侵草原的80%。与幼苗不同，极端天气事件后，入侵植物的成熟植株地上部分产量显著下降，不过六个月后这些产量已基本恢复。总体而言，我们的结果表明，在不进行进一步重大管理干预的情况下，植物群落控制后有可能实现恢复。然而，由于一些入侵植物存活下来，需要进一步监测以确保不会发生重新定殖。
