Identifying high risk pathways and species to prevent biological invasions in South Africa

Data were extracted from alien species databases on alien species in South Africa, on their pathways and dates of introduction, their regions of origin, South African distribution and invasion status. These data were used to assess the information content of South African alien species databases and to assess the introduction pathways of alien species in South Africa. The stowaway pathway for alien species was then assessed in more detail, and the role that shipping plays in the introduction of stowaway organisms to South Africa was evaluated. Finally, a simple, rapid and inexpensive method for developing invasive species watch lists was created and was tested using South Africa as a case study.本研究数据提取自南非外来物种（alien species）数据库，涵盖外来物种的传入路径、引入时间、起源区域、在南非的分布状况以及入侵状态。上述数据被用于评估南非外来物种数据库的信息完备性，并解析南非外来物种的传入路径。随后，研究针对外来物种的随船传带路径展开了更深入的剖析，并量化评估了航运活动在将随船隐匿生物引入南非过程中所起到的作用。最后，本研究开发了一种简便、快速且低成本的入侵物种预警名录编制方法，并以南非为案例对该方法进行了验证。