Abstract Invasive plant species reduce biodiversity, alter ecosystem processes, and cause economic losses. Control of invasive plants is therefore highly desired by land managers and policy makers. However, invasive plant control strategies frequently fail, partly because management often concentrates only on the eradication of invasive plants and not on revegetation with native species that use the available resources and prevent reinvasion. In this study, we focused on the intracontinental invader Rumex alpinus L., which was introduced by humans from the Alps to the lower mountains of Central Europe, where it has spread to semi-natural meadows, suppresses local biodiversity, and reduces the quality of hay used as cattle fodder. The species can be effectively removed using herbicide, but this leaves behind a persistent seed bank. Without further treatment, the invader rapidly regenerates and reinvades the area. We supplemented the herbicide treatment by adding the seeds of native grasses. Addition of native-seed effectively suppressed the regeneration of the invader from the seed bank, reduced its biomass, and consequently, prevented massive reinvasion. While the invader removal was successful, the restored community remained species-poor because the dense sward of native grasses blocked the regeneration of native forbs from the seed bank. Nevertheless, the addition of native seed proved to be an effective tool in preventing reinvasion after the eradication of the invasive plant.

中文翻译：

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添加本地种子作为入侵后恢复的有效工具

摘要 入侵植物物种减少生物多样性，改变生态系统过程，并造成经济损失。因此，土地管理者和政策制定者非常希望控制入侵植物。然而，入侵植物控制策略经常失败，部分原因是管理通常只专注于根除入侵植物，而不是利用可用资源并防止再次入侵的本地物种重新植被。在这项研究中，我们重点研究了大陆入侵者 Rumex alpinus L.，它是人类从阿尔卑斯山引入中欧低山，在那里蔓延到半天然草地，抑制了当地的生物多样性，并降低了干草用作牛饲料。使用除草剂可以有效去除该物种，但这会留下持久的种子库。如果没有进一步治疗，入侵者会迅速再生并重新入侵该地区。我们通过添加原生草的种子来补充除草剂处理。添加天然种子有效地抑制了来自种子库的入侵者的再生，减少了其生物量，从而防止了大规模的再入侵。虽然入侵者清除成功，但恢复的群落仍然缺乏物种，因为茂密的原生草丛阻止了种子库中原生杂草的再生。尽管如此，在根除入侵植物后，添加本地种子被证明是防止再次入侵的有效工具。添加天然种子有效地抑制了来自种子库的入侵者的再生，减少了其生物量，从而防止了大规模的再入侵。虽然入侵者清除成功，但恢复的群落仍然缺乏物种，因为茂密的原生草丛阻止了种子库中原生杂草的再生。尽管如此，在根除入侵植物后，添加本地种子被证明是防止再次入侵的有效工具。添加天然种子有效地抑制了来自种子库的入侵者的再生，减少了其生物量，从而防止了大规模的再入侵。虽然入侵者清除成功，但恢复的群落仍然缺乏物种，因为茂密的原生草丛阻止了种子库中原生杂草的再生。尽管如此，在根除入侵植物后，添加本地种子被证明是防止再次入侵的有效工具。