Conservation managers are required to make decisions in complex and uncertain contexts. To strengthen the robustness of conservation decisions, several approaches have been proposed to facilitate stakeholder engagement in the setting of conservation objectives and priority actions. While such processes have led to the formulation of several invasive alien plant management strategies to achieve specific objectives, the long-term consequences and trade-offs inherent in these strategies have not been tested. The performance of five of these strategies over 50 years was tested in the protected area context using empirical data from Table Mountain National Park, South Africa. A simulation model based on data for invasive Acacia species in a fire-driven ecosystem, focused on the interaction between strategy performance and clearing efficacy in achieving a management goal or reducing Acacia density to below 1 plant per hectare. At near perfect levels of clearing efficacy, all strategies converged towards reaching the management goal, while at lower efficacy levels the strategies diverged in their ability to achieve desired outcomes. Despite working across the largest area, strategies that focussed on clearing low density invasions, maintained the least area in a maintenance state over time. In contrast, strategies that focussed on a mix of post-fire, low density areas and high altitude areas cleared less area annually, but maintained a much larger area in a maintenance state. At higher levels of efficacy, strategies that return to previously worked areas were more successful than a post-fire strategy. Strategies that focused solely on securing water, performed poorly in maintaining low overall density of aliens. However, the influence of efficacy was significant and substantial and a much larger difference in area reaching the management goal was achieved by varying efficacy than varying strategy. As such, improving quality of work and implementation will have a far greater effect than which areas are prioritized or how this prioritization is done. While acacias are likely to persist in the long-term, improving work quality coupled with correct strategy selection will ensure continued gains in the area under maintenance and improved return on investment over time.

养护经理需要在复杂和不确定的情况下做出决定。为了增强保护决策的鲁棒性，已经提出了几种方法来促进利益相关者参与制定保护目标和优先行动。尽管这些过程导致制定了几种入侵性外来植物管理策略来实现特定目标，但这些策略固有的长期后果和权衡尚未得到检验。使用来自南非桌山国家公园的经验数据，在保护区范围内测试了这5种策略在50年内的效果。基于数据的入侵相思仿真模型火灾驱动的生态系统中的物种，着重于策略绩效与清除功效之间的相互作用，以实现管理目标或减少相思树密度低于每公顷1株植物。在达到接近理想的清除效果水平时，所有策略均趋于达成管理目标，而在较低的效果水平时，策略在实现所需结果方面的能力却有所不同。尽管跨最大的区域工作，但是专注于清除低密度入侵的策略随着时间的推移将最小区域保持在维护状态。相比之下，侧重于火后，低密度地区和高海拔地区的策略每年清除的区域较少，但在维护状态下则保持较大的区域。以更高的效率水平，返回到先前工作区域的策略比发射后策略更成功。仅仅着眼于确保水安全的策略在保持外星人总体密度较低方面表现不佳。然而，效力的影响是显着和实质性的，并且通过改变效力比改变策略来达到管理目标的面积差异更大。因此，提高工作质量和实施质量将比对哪些领域进行优先排序或如何进行优先排序产生更大的影响。尽管相思树很可能会长期存在，但改善工作质量以及正确选择策略将确保维修区的持续收益，并随着时间的推移提高投资回报率。改进工作质量和实施质量将比那些优先领域或如何完成优先领域产生更大的影响。尽管相思树很可能会长期存在，但改善工作质量以及正确选择策略将确保维修区的持续收益，并随着时间的推移提高投资回报率。改进工作质量和实施质量将比那些优先领域或如何完成优先领域产生更大的影响。尽管相思树很可能会长期存在，但改善工作质量以及正确选择策略将确保维修区的持续收益，并随着时间的推移提高投资回报率。