Facilitators and outcomes of biological invasions by aquatic macrophytes

入侵物种是外来物种，它们被引入到一个新的地理区域，并在占领新的栖息地的同时扩大了它们的活动范围。在这一过程中，入侵物种可以取代本地物种，将病原体引入经济上重要的物种，改变生态系统过程，破坏人类娱乐场所。在过去的几十年里，入侵物种的数量一直在稳步增长，现在它们已经成为全球生态系统和生物多样性的最大威胁之一。此外，入侵物种会造成巨大的经济成本，因为它们会大量灭绝具有重要商业价值的物种，并且需要广泛而昂贵的管理和预防计划。

Invasive species are non-native species that were introduced into a new geographical region and subsequently expanded their range while dominating new habitat. During this process, invasive species can displace native species, introduce pathogens to economically important species, alter ecosystem processes, and disrupt sites of human recreation. The numbers of invasive species have been steadily growing over the last few decades, and now they now comprise one of the biggest threats to ecosystems and biodiversity around the world. Furthermore, invasive species incur tremendous economic cost because they can decimate commercially important species, and collectively require extensive and costly management and prevention programs.