Across islands and continents, mammals are more successful invaders than birds
Across islands and continents, mammals are more successful invaders than birds
复制标题
在岛屿和大陆上，哺乳动物是比鸟类更成功的入侵者
DOI：
--
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
J. Jeschke
中科院分区：
文献类型：
--
作者：
J. Jeschke
许多入侵物种造成生态或经济破坏，而成为入侵物种的引入物种的比例是入侵者造成的总成本的重要决定因素。根据被广泛引用的十大规则，大约10%的引进物种建立了自己，大约10%的这些建立的物种成为入侵者。全球分类学上的差异，在部分物种成为入侵还没有被描述。在一个全球性的分析哺乳动物和鸟类的引进，我表明，哺乳动物和鸟类有一个更高的入侵成功率比预测的10规则，哺乳动物有一个显着更高的成功率比鸟类。在岛屿和大陆上，79%的哺乳动物和50%的鸟类已经建立了自己的栖息地，63%的哺乳动物和34%的鸟类已经成为入侵者。我的分析也不支持岛屿比大陆更容易受到入侵者影响的假设，因为我没有发现入侵成功与物种被引入的岛屿或大陆的大小之间存在显着关系。本研究中使用的数据集有许多局限性，例如，在全球范围内没有关于繁殖体压力的信息，因此必须推迟到未来的研究来了解所观察到的模式背后的机制。
Many invasive species cause ecological or economic damage, and the fraction of introduced species that become invasive is an important determinant of the overall costs caused by invaders. According to the widely quoted tens rule, about 10% of all introduced species establish themselves and about 10% of these established species become invasive. Global taxonomic differences in the fraction of species becoming invasive have not been described. In a global analysis of mammal and bird introductions, I show that both mammals and birds have a much higher invasion success than predicted by the tens rule, and that mammals have a significantly higher success than birds. Averaged across islands and continents, 79% of mammals and 50% of birds introduced have established themselves and 63% of mammals and 34% of birds established have become invasive. My analysis also does not support the hypothesis that islands are more susceptible to invaders than continents, as I did not find a significant relationship between invasion success and the size of the island or continent to which the species were introduced. The data set used in this study has a number of limitations, e.g. information on propagule pressure was not available at this global scale, so understanding the mechanisms behind the observed patterns has to be postponed to future studies.