Invasive species continue to drive major losses in biodiversity and ecosystem function across the globe. Dealing with the effects of invasion is particularly problematic in marine and freshwater habitats, because the pace at which invaders establish often greatly outstrips the resources available for their eradication. While most managers in North America now focus on ongoing containment and suppression interventions, they often lack quantitative guidance from which to set targets and evaluate success. We propose practical guidelines for identifying management targets for invasions for which eradication is unfeasible, based on achieving “functional” eradication – defined as suppressing invader populations below levels that cause unacceptable ecological effects – within high‐priority locations. We summarize key ecological information needed to inform this strategy, including density–impact functions and recolonization rates. We illustrate the framework's application for setting local suppression targets using three globally invasive species as examples: red lionfish (Pterois spp), European green crab (Carcinus maenas), and rusty crayfish (Faxonius rusticus). Identifying targets for suppression allows managers to estimate the degree of removal required to mitigate ecological impacts and the management resources needed to achieve sufficient control of an invader.

中文翻译：

---

功能根除作为入侵物种控制的框架

入侵物种继续在全球范围内造成生物多样性和生态系统功能的重大损失。在海洋和淡水生境中，应对入侵的影响尤其成问题，因为入侵者建立的步伐常常大大超过其根除的可用资源。尽管北美地区的大多数管理人员现在都专注于持续的遏制和压制干预措施，但他们通常缺乏定量指导来设定目标和评估成功。我们在高优先级区域内，在实现“功能性”根除的基础上，提出了切实可行的指南，以明确根除的管理目标，即“将功能性根除”抑制在造成不可接受的生态影响的水平以下。我们总结了为该策略提供信息所需的关键生态信息，包括密度影响函数和重新定殖率。我们以三种全球入侵物种为例，说明了该框架在设定局部抑制目标上的应用：红狮子鱼（Pterois spp），欧洲绿蟹（Carcinus maenas）和生锈的小龙虾（Faxonius Rustus）。确定抑制目标可让管理人员估算减轻生态影响所需的清除程度，以及对入侵者进行充分控制所需的管理资源。