PDF(Pubmed)
Abstract：
Invasive species may pose significant threats to biodiversity and ecosystem structure and functioning. The number of introduced species that have become invasive is substantial and is rapidly increasing. Identifying potentially invasive species and preventing their expansion are of critical importance in invasion ecology. Phylogenetic relatedness between invasive and native species has been used in predicting invasion success. Previous studies on the phylogenetic relatedness of plants at the transition from naturalization to invasion have shown mixed results, which may be because different methods were used in different studies. Here, I use the same method to analyze two comprehensive data sets from South Africa and China, using two phylogenetic metrics reflecting deep and shallow evolutionary histories, to address the question whether the probability of becoming invasive is higher for naturalized species distantly related to the native flora. My study suggests that the probability of becoming invasive is higher for naturalized species closely related to the native flora. The finding of my study is consistent with Darwin\'s preadaptation hypothesis.
摘要：
入侵物种可能对生物多样性以及生态系统的结构和功能构成重大威胁。已经入侵的引入物种的数量是大量的并且正在迅速增加。识别潜在的入侵物种并防止其扩展在入侵生态学中至关重要。入侵物种和本地物种之间的系统发育相关性已用于预测入侵成功。以前对植物从归化到入侵过渡过程中的系统发育相关性的研究显示出不同的结果，这可能是因为在不同的研究中使用了不同的方法。这里,我用同样的方法分析了南非和中国的两个综合数据集，使用反映深层和浅层进化史的两个系统发育指标，解决与本地植物区系较远相关的归化物种的入侵概率是否更高的问题。我的研究表明，对于与本地植物区系密切相关的归化物种，入侵的可能性更高。我的研究发现与达尔文的预适应假设是一致的。
