Humans act as drivers for the introduction of non-native trees. Some non-native species may become invasive and cause undesirable impacts, thereby motivating targeted decision-making and management actions. Australian acacias (or wattles; genus Acacia subgenus Phyllodineae) have been introduced worldwide, offering both opportunities and risks for local communities. Understanding how stakeholders perceive invasive acacias is paramount to assist effective decision-making. We assessed stakeholders’ perceptions about these non-native acacias, their invasion process, social-ecological impacts and management. We conducted a questionnaire-based survey with experienced managers and decision-makers in Northern Portugal, where acacia invasions are widespread. We found that most stakeholders are not able to recognize non-native species, failing to identify the introduction period, drivers of dispersion and appropriate management methods of Australian acacias. We could also identify different stakeholder perceptions on the benefits and negative impacts provided by these species. We call for the implementation of technical training and information outreach strategies to address stakeholders’ lack of knowledge (and experience) on the recognition and identification of non-native trees, as well as on their introduction and invasion history, drivers of dispersion, costs and benefits, and effective management actions. Stakeholders’ engagement should be promoted in the design and implementation of biosecurity efforts to control (and/or adapt to) invasive acacias at relevant scales of invasion management.

中文翻译：

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利益相关者对非本地相思的看法及其对葡萄牙管理的影响

人类是引进非本地树木的驱动力。一些非本地物种可能会入侵并造成不良影响，从而激发有针对性的决策和管理行动。澳大利亚相思（或荆；相思属Phyllodineae））已在全球范围内引入，为当地社区带来了机遇和风险。了解利益相关者如何看待侵入性相思对于协助有效决策至关重要。我们评估了利益相关者对这些非本地相思的看法，入侵过程，社会生态影响和管理。我们与葡萄牙北部经验丰富的管理人员和决策者进行了基于问卷的调查，该地区的相思入侵非常普遍。我们发现，大多数利益相关者无法识别非本地物种，无法确定澳大利亚相思的引入期，扩散驱动因素和适当的管理方法。我们还可以确定利益相关者对这些物种带来的好处和负面影响的不同看法。我们呼吁实施技术培训和信息推广策略，以解决利益相关者在识别和识别非本地树及其引进和入侵历史，分散驱动因素，成本和成本方面缺乏知识（和经验）的问题。收益和有效的管理措施。在设计和实施生物安全措施以控制（和/或适应）相关入侵管理规模的入侵相思生物方面，应促进利益相关者的参与。